Given this is like a new engine, it is incumbent upon the viewers to give it a rating with commentary. A few starters: The mechanism is easy to access and the electrical connections are easy to keep clean Bearings on the axles - now that’s quality It uses self tapping screws - that will wear out in time surely for the price he could have …. And there are no sprung buffers, but for the price that is fine, especially as they would have no use So the mechanism that is a four star, the self tapping screws mean it cannot be 5 star Performance There is some wobble on the top which might indicate something is not truly round. However it runs and does not derail which is the whole point so performance is 5 star for me. The decoration is very basic, just a yellow stripe and not very well applied Give 1 star for that That gives it an overall rating of A and into the book it goes in first place as there is nothing else like it. 😂😂😂😂
I'm playing devil's advocate here. Maybe you should create a geared mechanism that slowly tilts the wheel from side to side a few degrees. This will simulate side-loading, which might be experienced by the wagons on turns.
Great idea. I'm not sure 'devil's advocate' is the term you're looking for though. To quote wikipedia, "The phrase "playing devil's advocate" describes a situation where someone, given a certain point of view, takes a position they do not necessarily agree with."
@@vibhav_m Thanks. I didn't know the correct use of the term. But maybe it's more accurate than you realize. I really don't care if the material's durability is tested with a side load. The results will not influence my opinion of the product, and I doubt it will make much difference in the measurable wear.😃
@@SueBobChicVid Haha fair enough. I've just only ever seen the phrase used when someone wants to make a point in favour of the side of a debate they disagree with.
@SueBobChicVid Call me a wistful ol' curmudgeon, but not only do you admit that it's a phrase that isn't too common anymore, but you use a word that fewer and fewer people will have _ever_ heard of and potentially never will. The word is "debate" and seems to be anathema to present day commenters. Not allowed to disagree, not allowed to be heard, the hapless dissenter isn't even allowed to air their point playing Devil's Advocate! Not a healthy state to be in, I'd say.
In the manufacturing industry this is called either a highly accelerated life test (HALT) or, if you have or are able to derive a mathematical model fairly relating it to real life use, quantitative accelerated life testing (QALT). I never expected to see this particular crossover between my hobby and work, especially by someone else. But it's a great idea and implementation
Hi Sam! Pinpoint wheel bearings, £3.70 for 40 (Cambrian model rail was the first to show, im sure there are others). 37p per wagon for them to have metal bearings on the wheels sounds like a great price to me.
you could pretty easily add an Infrared LED & sensor (one of the pre-made modules), hook to an arduino, on an interrupt pin, measure the rising or falling edge and it will pulse once per rotation - will do accurate time measurement and you could get it to show you actual speed in m/s, or scale speed, or whatever other units
It is good to see that Sam'sTrains has an R&D&T department (Research & Development & Testing). Next you will need to put a small load in the car and test again and then increase it till the bearings fail or it become impractical. Just having a bit of fun, great project and video Jersey Bill.
Thanks Bill - that would be interesting wouldn't it? If it passes the test unloaded, I might try adding something silly like 50g load to it... hopefully the motor will still be able to move it haha! Thanks for watching, Sam :)
@@SamsTrains I have faith in the motor, but the coupler may need some heat shrink to help it stay together. So, make it happen at least that's what a true Myth Buster would do and then you blow it all up, LOLOLOL.
I think Sam’s Trains will one day become a manufacturer of high scale models. Anyone else? Also, I love that the 53 seconds it took for the loco to runaround the layout wasn’t cut out or sped up!
haha thank you! It is what I love to do.. but I'm not sure I could ever relinquish control to a factory... I love doing it all myself, which means small volumes. haha glad you liked that! Thanks for watching, Sam :)
Quite neat. That wobble even helps simulate bad track and curves by side-loading the bearings a little. Definitely good for accelerated testing to make sure that your wagons hold up - some other manufacturers should take note of this as well so that _their_ products aren't pure garbage right out of the package.
Looks like an 1859 pattern Winstanley Cormthruster, used in the Faroe Islands in the manufacture of Crabbing Pins, for the burgeoning Puffin twatting industry (you can't shoot Puffins, but you may twat them with big sticks). The Crabbing Pins are used to secure the Puffin hunters to the cliffs for up to .4 of a Femtosecond. One of these machines was used in one of the more toilety parts of Manchester to knock the Mayor's hat off each Maundy Thursday. However, some cheeky little gets tried to remove it's hubcaps, which was near impossible, as it didn't have any. It rolled off, running at full pelt, and exploded with a noise, and smell like an exceptionally damp fart, somewhere near Burnage. The remains were carted off by Vagabonds, Ne'er do wells, Jossers, Beggars, Mendicants, Gobshites, Hobbledehoys, Guttersnipes, and other top gits. 🤔🤔🤔
I’ve come back to the hobby having left it when I was 17 and I am now 56. Just love this stuff. As a kid you love running everything at full speed and hoping for a derailment or as slow as it goes. I remember thinking that the scale speed I was running them at must have been like a Rocket (pun intended). I liked how far they slid when it reverse down hill… I think i may have grown up since… I hope.😊
Sam, correct me if I'm wrong, but by the wagon on top of the wheel thing spinning round, I'm guessing it's a rolling road to help keep the wheels of rolling stock clean. Is it a quicker means of cleaning rolling stock wheels so you can ditch the use of cotton buds to do so?
This is an excellent approach to determining any potential weakness in your design. As has already been mentioned the difficulty with Highly Accelerated Life Testing is relating the test environment to the real life environment of running the wagon on a layout. For example the axle boxes are likely to get hotter running at higher speeds which could make them wear much faster (or just possibly more slowly). The effect of side loads might also be significant - especially on a train set where most of the track is curved. Moving from side to side as suggested below - or just propping the rig so it runs at an angle on one side could potentially reproduce the effect of side load on that one side - which is all you need. We all look forward to the results of your test!
Sam, have you heard of tenicious resin? It's not cheap, but you can add it to standard resins (I use 10% usually). It makes the resin much more resilient to shattering/ wear and tear
Absolutely bloody genius, I wish the major company put this type of r&d in to their products. Please update us on the results of the bearings. Thanks Sam the man
I found this fascinating I love this kind of stuff, keep up the good work Sam. I am waiting for it to get a little cooler before I get back in my loft to restart work on my layout.
You briefly mentioned increased heat and I can see that this might increase the wear rate over every day normal use. Not sure how you could make an allowance for that, assuming it actually is a thing.
The only thing I can see it being is for checking wheels / axles are straight and fitted correctly correctly on models and your own 3d prints? I imagine itd be hard to get it perfect by eye, so this is a way of checking so something like this would help make it easier? Great video as always though sam :) either that or it measures how free rolling a wagon is? I think you've got me beat here sam
A clever piece of engineering, Sam, but I would have put the wagon upside down, underneath the spinning disk. That way you could increase the pressure on the wheels and bearings, increasing the friction/wear, to get results even quicker.
Brilliant device. Is the vibrations going to add extra wear in any meaningful way? I suppose if it does and the wear is minimal that's even better results than expected.
Interesting video here Sam, my only guess is that it’s a machine that can be used to make sure that the axles on the wheels are at exactly the same position, if the axles are not in the same position on the wheel then it would cause the wagon when fully assembled to rock up and down as it moves, is not round then this machine would pick it up as the wagon would move up and down
Impressive engineering! And great dedication to testing a technical solution before to release it to the market. However, have you thought about the possibity of not fitting the axle ends directly in the resin chassis, but inside small pieces of metal tubing that would protect the resin part from the rotating axles?
Couple thoughts… You could print a second wheel, and use gears to drive a level set of wheels similar to your rolling road, this may also give you even more speed so more distance covered in your time frame and in theory it should be more level and give you a more accurate wear pattern… On your result system… you probably need to find out how many hours it takes to get a ‘fail’ result of a standard plastic/no bearing wagon to have a target to judge against for your wagons If neither shows any sign of wear then it you’ll never know if it’s good or not? Maybe record how much distance is covered before a ‘standard’ wagon fails and use that as your target for success
Yes that's very true - but I want this device to be universal so it fits all kinds of different wheelbases - a second geared wheel would really complicate that. Yeah absolutely - I will be doing a full set of tests on the wagons... I suspect I may lose patience before I get failures, but if I can demonstrate a more than adequate lifespan, I'll be satisfied! Thanks for watching, Sam :)
That's a contraption. You could always go with a middle ground and press a harder "bearing" into the resin suspension and just toughen up that one area.
Awesome idea! Another point of attention might be that the wheels currently spin in only one direction. I wonder if that would also have impact on the wear. 🤔
Sam,if you have seen photos of the Rugby locomotive testing facility,they had electric motors,that could accelerate to any speed! You've got a single motor rather than multiples! Basically an abbreviated load testing apparatus! Brilliant!! Thank you 😇 😊!
You should be working in Hornby's R&D Department with this sort of ingenuity! And they should be paying you accordingly! Once again, I'm thinking " we need more people like this".
Using a cheap optical tachometer to measure RPM would have save you a lot of trouble having to film the wheel at high speed. Once you had an RPM reading, all you would have needed to do was multiply it by the circumference of the wheel to get the metres/minute reading. Awesome piece of test equipment though.
which brand of wagon did you have on your device for the video? and did it have metal/brass bearings? and lastly how did it last, one last point at these exhilarated speed you are putting much higher frication loads, than would ever be the case by simply running the model on a layout. Its possible the resin will out perform the FDM version given these higher friction temperatures and the melt temp of FDM cheers Phil
I love the effort and thought that went into this, but I must ask, why dont you use commercially available, cheap brass pinpoint bearings, or better yet, ball bearings (pivot ball bearings would be especially nice), which I'm sure all of us viewers of your channel would appreciate very much? As for your testing, why not just find the scale miles per hour of the wagon tester, and use the amount of rotations of a wheel on a locomotive, your Hornby TTS A4, for example would be excellent, you just record video of it going around the layout at 6 volts, count the chuffs, and divide by 6 for the revolutions, then use the size of the wheel for calculations!
I am going to guess two minutes into this video and suggest that it is either an improvement for the turntable, or it is a functioning water mill for the layout. Edit: Now I see. Very fascinating way to solve the issue.
Having recently seen a video by someone w/ a switching, sorry, shunting layout who made a contraption to break his engines in as he had no loop to run them on, I had a suspicion what this might be for, but couldn't quite figure how it worked.
Hello Sam @14:28 - if you use a different Loco you will get different results b/c of the Motor being faster or slower, also if you used you inner loop - as that will be slighter smaller - you will also get a different results!!! B. t. w. - at 1st I thought it was something to do with holding plastic String for your 3D Printer!!! 🤔😉🚂🚂🚂
The wear issue could potentially be solved with a small piece of metal inlaid into a slot in the chassis, if the resin really does wear more than the 3D printed plastic. I hope we get to see the results of the testing!
Hey sam, i have an idea. If you made a smaller version of the wheel and frame, then put a conveyer belt of strait track. Then you have a machine that you can use to run your locos in
From the preview , for me looks like a wire drum or whatever is called. In reality it would be used to roll the wire on to the catenary. Edit: after watching the clip , this a very interesting device. It's pretty much a rolling road , but if for locos the wheels spins the the wheels of the road , in this case the wheelbof the "rolling road" is spinning the wheels of the waggon.
Not read all the comments but having the wheels at an angle would increase the force acting on on the bearings due to 'triangle of forces' Good test method though.
I have a question Sam, any news on the Dapol 2800, or the Accurascale 57xx? It's been a very long time since we've heard any updates. Cheers Jasper & Willow
You could maybe use resin chassis if you use metal bearings- Peter’s spares do a pack of 40 for a couple of quid, so for an extra 20 or so pence per wagon you could have better running that lasts for ages combined with the cheaper and finer resin chassis
Yes those are an option too - but it wouldn't be 20p per wagon by the time I've factored in profit margins and assembly time - it's a very delicate balance to produce such complex wagons for less than let's say Rapido... so every pence matters! If they last without the separate bearings, that'd be most ideal! Thanks for watching, Sam :)
@sam maybe you could have a go at making some kind of conveyor belt type rolling road….i think it’s possible but getting the joins to run smooth and you would probably need to find a way to synch the speed of the rolling road to the the engine
I know I'm probably going to be completely wrong but I assume it has to do with testing the maximum / where induced by running carriages / trains for extended distances without needing an extremely long track
Neat. Watching the thing shake on the mechanism near the end while it was pinned in place reminded me of a squirming little sub strapped to some sort of a pleasure chair. Yes, i am aware my mind is very weird
I thought it was going to be some kind of spool all the way to the end. Not sure this would work on anything with trucks so my mind didn't even guess this was a freight car roller.
Reminds me of holding a dremel with a rubber Lego tyre fitted to a wagon wheel at 20,000 rpm. That melted the bearing right out. The wagon wheels were doing an 85 real mph and made a very high pitched screaming sound. You can make your resin frames work with brass top hat bearings, these add maybe 50p max to the material cost per wagon but improve the running and longevity a great deal. With properly sized holes in the axle boxes they are a straight push fit and take a few seconds to put in.
Hi! good work Sam! Being from technical background I really enjoyed the marriage of model railway with NDT! I have created a shelf layout of my own with all your reviewed products in my shed:) I could not find anything in your etsy page?
Thank you so much glad you liked it! Yeah unfortunately everything sold out almost immediately last week - I'm working on the next models now though! Thanks for watching, Sam :)
Fascinating video. It would be interesting to know the comparative scale speeds. If you ran your engine around your layout at approximately 40mpg, then your device would run your wagon at 400mph? Is that right? 😮
I have online lectures to go through, can't watch this now sorry! 😔 Looks like another one of your smart inventions, can't say I knew what it is for before peeking. 🤣
The Institute of Rail Research at the University of Huddersfield has a static rig capable of running real wagons and/or bogies at alarming speeds to study wheel-rail interactions. Not 3D printed though 😂
See, if they just taught maths with railway-based example problems instead of shopping for fruit, we'd all* do better. * All is assumed to mean people who like trains.
Given this is like a new engine, it is incumbent upon the viewers to give it a rating with commentary.
A few starters:
The mechanism is easy to access and the electrical connections are easy to keep clean
Bearings on the axles - now that’s quality
It uses self tapping screws - that will wear out in time surely for the price he could have ….
And there are no sprung buffers, but for the price that is fine, especially as they would have no use
So the mechanism that is a four star, the self tapping screws mean it cannot be 5 star
Performance
There is some wobble on the top which might indicate something is not truly round. However it runs and does not derail which is the whole point so performance is 5 star for me.
The decoration is very basic, just a yellow stripe and not very well applied
Give 1 star for that
That gives it an overall rating of A and into the book it goes in first place as there is nothing else like it.
😂😂😂😂
I'm playing devil's advocate here. Maybe you should create a geared mechanism that slowly tilts the wheel from side to side a few degrees. This will simulate side-loading, which might be experienced by the wagons on turns.
That's a good idea thanks for sharing!
Thanks for watching, Sam :)
Great idea. I'm not sure 'devil's advocate' is the term you're looking for though. To quote wikipedia, "The phrase "playing devil's advocate" describes a situation where someone, given a certain point of view, takes a position they do not necessarily agree with."
@@vibhav_m Thanks. I didn't know the correct use of the term. But maybe it's more accurate than you realize. I really don't care if the material's durability is tested with a side load. The results will not influence my opinion of the product, and I doubt it will make much difference in the measurable wear.😃
@@SueBobChicVid Haha fair enough. I've just only ever seen the phrase used when someone wants to make a point in favour of the side of a debate they disagree with.
@SueBobChicVid Call me a wistful ol' curmudgeon, but not only do you admit that it's a phrase that isn't too common anymore, but you use a word that fewer and fewer people will have _ever_ heard of and potentially never will.
The word is "debate" and seems to be anathema to present day commenters. Not allowed to disagree, not allowed to be heard, the hapless dissenter isn't even allowed to air their point playing Devil's Advocate!
Not a healthy state to be in, I'd say.
In the manufacturing industry this is called either a highly accelerated life test (HALT) or, if you have or are able to derive a mathematical model fairly relating it to real life use, quantitative accelerated life testing (QALT). I never expected to see this particular crossover between my hobby and work, especially by someone else. But it's a great idea and implementation
Ahh fascinating - never knew the technical term for it, thanks for that haha! Glad you liked it anyway :D
Thanks for watching, Sam :)
So this makes 2 of us who have been involved in HALT and similar processes - though I am now retired. I wonder how many more?
Its the new HORNBY spaghetti stretcher - yours for just £300 - be quick price increase due soon....
hahahaha!!!
Cheaper at the retailers, though.
Hi Sam!
Pinpoint wheel bearings, £3.70 for 40 (Cambrian model rail was the first to show, im sure there are others). 37p per wagon for them to have metal bearings on the wheels sounds like a great price to me.
I'm fairly sure that Wrenn used to use metal bearings and pinpoint axles on their late 1970s wagons?
you could pretty easily add an Infrared LED & sensor (one of the pre-made modules), hook to an arduino, on an interrupt pin, measure the rising or falling edge and it will pulse once per rotation - will do accurate time measurement and you could get it to show you actual speed in m/s, or scale speed, or whatever other units
It is good to see that Sam'sTrains has an R&D&T department (Research & Development & Testing). Next you will need to put a small load in the car and test again and then increase it till the bearings fail or it become impractical. Just having a bit of fun, great project and video Jersey Bill.
Thanks Bill - that would be interesting wouldn't it? If it passes the test unloaded, I might try adding something silly like 50g load to it... hopefully the motor will still be able to move it haha!
Thanks for watching, Sam :)
@@SamsTrains I have faith in the motor, but the coupler may need some heat shrink to help it stay together. So, make it happen at least that's what a true Myth Buster would do and then you blow it all up, LOLOLOL.
I think Sam’s Trains will one day become a manufacturer of high scale models. Anyone else?
Also, I love that the 53 seconds it took for the loco to runaround the layout wasn’t cut out or sped up!
I was just thinking that while watching this haha! Maybe we're all watching the earnest beginnings of the next Hornby, who knows.
haha thank you! It is what I love to do.. but I'm not sure I could ever relinquish control to a factory... I love doing it all myself, which means small volumes.
haha glad you liked that!
Thanks for watching, Sam :)
Will they be heavy enough?
You could build a track recording coach to measure the length of your layout accurately using a click machine or similar...
Ahh that would be great fun - fab idea!
Thanks for watching, Sam :)
Quite neat. That wobble even helps simulate bad track and curves by side-loading the bearings a little.
Definitely good for accelerated testing to make sure that your wagons hold up - some other manufacturers should take note of this as well so that _their_ products aren't pure garbage right out of the package.
Looks like an 1859 pattern Winstanley Cormthruster, used in the Faroe Islands in the manufacture of Crabbing Pins, for the burgeoning Puffin twatting industry (you can't shoot Puffins, but you may twat them with big sticks). The Crabbing Pins are used to secure the Puffin hunters to the cliffs for up to .4 of a Femtosecond.
One of these machines was used in one of the more toilety parts of Manchester to knock the Mayor's hat off each Maundy Thursday. However, some cheeky little gets tried to remove it's hubcaps, which was near impossible, as it didn't have any. It rolled off, running at full pelt, and exploded with a noise, and smell like an exceptionally damp fart, somewhere near Burnage. The remains were carted off by Vagabonds, Ne'er do wells, Jossers, Beggars, Mendicants, Gobshites, Hobbledehoys, Guttersnipes, and other top gits. 🤔🤔🤔
haha excellent - unfortunately that isn't what I've built, haha!
Thanks for watching, Sam :)
Average British sentence
Are you sure it was Manchester? It sounds more like Liverpool.
@@gordanmilne7034 Definitely MCR. It would have had to roll a loooong way to explode in Burnage. 😆😆😆
If you calculate the speed for the scale (1/76,2 value), you are running a wagon at 850 km/h with it, the speed of a commercial plane in flight !
Blimey... that's quite scary isn't it!!
Thanks for watching, Sam :)
I’ve come back to the hobby having left it when I was 17 and I am now 56. Just love this stuff. As a kid you love running everything at full speed and hoping for a derailment or as slow as it goes. I remember thinking that the scale speed I was running them at must have been like a Rocket (pun intended). I liked how far they slid when it reverse down hill… I think i may have grown up since… I hope.😊
It's a loom for making little quilts for the passengers in the open carriages being towed by Stephenson's Rocket.
Wow well done... I didn't think anyone would figure it out so easily :O
Thanks for watching, Sam :)
Sam, correct me if I'm wrong, but by the wagon on top of the wheel thing spinning round, I'm guessing it's a rolling road to help keep the wheels of rolling stock clean. Is it a quicker means of cleaning rolling stock wheels so you can ditch the use of cotton buds to do so?
That’s a very smart and reasonable guess… but wrong!
This is an excellent approach to determining any potential weakness in your design. As has already been mentioned the difficulty with Highly Accelerated Life Testing is relating the test environment to the real life environment of running the wagon on a layout. For example the axle boxes are likely to get hotter running at higher speeds which could make them wear much faster (or just possibly more slowly). The effect of side loads might also be significant - especially on a train set where most of the track is curved. Moving from side to side as suggested below - or just propping the rig so it runs at an angle on one side could potentially reproduce the effect of side load on that one side - which is all you need. We all look forward to the results of your test!
Sam, have you heard of tenicious resin? It's not cheap, but you can add it to standard resins (I use 10% usually). It makes the resin much more resilient to shattering/ wear and tear
Absolutely bloody genius, I wish the major company put this type of r&d in to their products.
Please update us on the results of the bearings. Thanks Sam the man
When I first saw the finished product, I thought it was for a reel of plastic for your 3d printing XD
I found this fascinating I love this kind of stuff, keep up the good work Sam. I am waiting for it to get a little cooler before I get back in my loft to restart work on my layout.
You briefly mentioned increased heat and I can see that this might increase the wear rate over every day normal use. Not sure how you could make an allowance for that, assuming it actually is a thing.
Clever Sam, very clever 👏
You had me guessing right to the end. I couldn't work it out.
haha awesome!! I thought it made a good conundrum!
Thanks for watching, Sam :)
Nope
Would never have guessed that from the Thumbnail….
Sam’s Trains now doing fatigue testing on his model railway products.
NASA would be proud 😂
haha thanks Adam - I'm sure they would haha!
Thanks for watching, Sam :)
The only thing I can see it being is for checking wheels / axles are straight and fitted correctly correctly on models and your own 3d prints? I imagine itd be hard to get it perfect by eye, so this is a way of checking so something like this would help make it easier? Great video as always though sam :) either that or it measures how free rolling a wagon is? I think you've got me beat here sam
Ahh very interesting guess... I do need a machine like that haha!
Thanks for watching, Sam :)
The thumbnail had me thinking it was a pulley to work like a mine incline. I was sure I had it right right up to the big reveal
haha yeah it does look a lot like a pulley!
Thanks for watching, Sam :)
A clever piece of engineering, Sam, but I would have put the wagon upside down, underneath the spinning disk. That way you could increase the pressure on the wheels and bearings, increasing the friction/wear, to get results even quicker.
This is great Sam, I love the inventions that you come up with.
Thank you so much! :D
Brilliant device. Is the vibrations going to add extra wear in any meaningful way? I suppose if it does and the wear is minimal that's even better results than expected.
Yeah the vibrating should accelerate the wear - but I don't mind this being a worst-case scenario!
Thanks for watching, Sam :)
Interesting video here Sam, my only guess is that it’s a machine that can be used to make sure that the axles on the wheels are at exactly the same position, if the axles are not in the same position on the wheel then it would cause the wagon when fully assembled to rock up and down as it moves, is not round then this machine would pick it up as the wagon would move up and down
Ahh very interesting idea - that could be a useful tool actually too!
Thanks for watching, Sam :)
Impressive engineering! And great dedication to testing a technical solution before to release it to the market.
However, have you thought about the possibity of not fitting the axle ends directly in the resin chassis, but inside small pieces of metal tubing that would protect the resin part from the rotating axles?
Couple thoughts…
You could print a second wheel, and use gears to drive a level set of wheels similar to your rolling road, this may also give you even more speed so more distance covered in your time frame and in theory it should be more level and give you a more accurate wear pattern…
On your result system… you probably need to find out how many hours it takes to get a ‘fail’ result of a standard plastic/no bearing wagon to have a target to judge against for your wagons
If neither shows any sign of wear then it you’ll never know if it’s good or not? Maybe record how much distance is covered before a ‘standard’ wagon fails and use that as your target for success
Yes that's very true - but I want this device to be universal so it fits all kinds of different wheelbases - a second geared wheel would really complicate that. Yeah absolutely - I will be doing a full set of tests on the wagons... I suspect I may lose patience before I get failures, but if I can demonstrate a more than adequate lifespan, I'll be satisfied!
Thanks for watching, Sam :)
@@SamsTrains maybe ask your members/viewers to send photos of the bearings of thier oldest models and any info they have on life span/age etc.
That's a contraption. You could always go with a middle ground and press a harder "bearing" into the resin suspension and just toughen up that one area.
Awesome idea!
Another point of attention might be that the wheels currently spin in only one direction. I wonder if that would also have impact on the wear. 🤔
Highly ingenious, Sam. And very brave doing all that maths on camera!
Hopefully this a dynometer for locomotive testing! Definitely for loading testing! Anyway,a hazardous guess! Thanks!
Interesting guess!! Dynomometering was involved I suppose!
Thanks for watching, Sam :)
Sam,if you have seen photos of the Rugby locomotive testing facility,they had electric motors,that could accelerate to any speed! You've got a single motor rather than multiples! Basically an abbreviated load testing apparatus! Brilliant!! Thank you 😇 😊!
You should be working in Hornby's R&D Department with this sort of ingenuity! And they should be paying you accordingly!
Once again, I'm thinking " we need more people like this".
Wow this is fascinating! I too love all the engineering and stuff that goes into stuff like that! Greay vid sam 👍
Thank you so much! It’s become my favourite part of the hobby!!
I wanted to hear more about you and Chloe’s pizza!
Using a cheap optical tachometer to measure RPM would have save you a lot of trouble having to film the wheel at high speed. Once you had an RPM reading, all you would have needed to do was multiply it by the circumference of the wheel to get the metres/minute reading. Awesome piece of test equipment though.
which brand of wagon did you have on your device for the video? and did it have metal/brass bearings? and lastly how did it last, one last point at these exhilarated speed you are putting much higher frication loads, than would ever be the case by simply running the model on a layout. Its possible the resin will out perform the FDM version given these higher friction temperatures and the melt temp of FDM
cheers
Phil
Hi. Have you or will do a video on track cleaning. Either cleaning cars or hand cleaning and how do you keep your track clean. Thanks.
I love the effort and thought that went into this, but I must ask, why dont you use commercially available, cheap brass pinpoint bearings, or better yet, ball bearings (pivot ball bearings would be especially nice), which I'm sure all of us viewers of your channel would appreciate very much? As for your testing, why not just find the scale miles per hour of the wagon tester, and use the amount of rotations of a wheel on a locomotive, your Hornby TTS A4, for example would be excellent, you just record video of it going around the layout at 6 volts, count the chuffs, and divide by 6 for the revolutions, then use the size of the wheel for calculations!
This seems like a good test! Are you planning on doing a part two where you test the resin bearings?
oh, further point, resin 3d print the chassis - with suitably cut outs for top hat brass bearings to press into, and add them before final curing
I am going to guess two minutes into this video and suggest that it is either an improvement for the turntable, or it is a functioning water mill for the layout.
Edit: Now I see. Very fascinating way to solve the issue.
Ahh excellent guesses - a water mill would be amazing to build!!
Thanks for watching, Sam :)
Having recently seen a video by someone w/ a switching, sorry, shunting layout who made a contraption to break his engines in as he had no loop to run them on, I had a suspicion what this might be for, but couldn't quite figure how it worked.
Nice work Sam, I was wondering if you could modify it a bit to use the machine to clean your wheels of your wagons.
Hello Sam @14:28 - if you use a different Loco you will get different results b/c of the Motor being faster or slower, also if you used you inner loop - as that will be slighter smaller - you will also get a different results!!! B. t. w. - at 1st I thought it was something to do with holding plastic String for your 3D Printer!!! 🤔😉🚂🚂🚂
The wear issue could potentially be solved with a small piece of metal inlaid into a slot in the chassis, if the resin really does wear more than the 3D printed plastic.
I hope we get to see the results of the testing!
Any thoughts for some custom wagons in 7mm O gauge ??
I thought it was a motor armature rewinding device.
How wrong i was.
Good luck getting boggies on that.
2:53 is it for checking track spacing?
Hey sam, i have an idea. If you made a smaller version of the wheel and frame, then put a conveyer belt of strait track. Then you have a machine that you can use to run your locos in
Yeah that'd be fantastic - it's just how to make the conveyor belt that I couldn't figure out!
Thanks for watching, Sam :)
From the preview , for me looks like a wire drum or whatever is called. In reality it would be used to roll the wire on to the catenary.
Edit: after watching the clip , this a very interesting device. It's pretty much a rolling road , but if for locos the wheels spins the the wheels of the road , in this case the wheelbof the "rolling road" is spinning the wheels of the waggon.
Either a winding for a pit model or rope wheel for a funicular tram railway.
Is it for making a better chassis for a piece of rolling stock that you create? I hope without resin.
Well done it is!
Sam's -Trains-
now
Sam's Mechanical Engineering, Testing, Prototyping and Model Railway Manufacturing.
hahaha I like the ring that has to it!!
Thanks for watching, Sam :)
@@SamsTrains ;)
Not read all the comments but having the wheels at an angle would increase the force acting on on the bearings due to 'triangle of forces' Good test method though.
I have a question Sam, any news on the Dapol 2800, or the Accurascale 57xx? It's been a very long time since we've heard any updates.
Cheers Jasper & Willow
I haven't seen any news on those recently - hopefully there will be some soon!
Thanks for watching, Sam :)
The Jiggle makes it even more realistic for side loading wear.
Reckon it’s a way to create ‘hot boxes’ and simulate axle box overheating in model form!
Check the axle Journal Boxes and Axle Ends as they would get hot I'm sure at that speed of rotation.
You could maybe use resin chassis if you use metal bearings- Peter’s spares do a pack of 40 for a couple of quid, so for an extra 20 or so pence per wagon you could have better running that lasts for ages combined with the cheaper and finer resin chassis
Yes those are an option too - but it wouldn't be 20p per wagon by the time I've factored in profit margins and assembly time - it's a very delicate balance to produce such complex wagons for less than let's say Rapido... so every pence matters! If they last without the separate bearings, that'd be most ideal!
Thanks for watching, Sam :)
@sam maybe you could have a go at making some kind of conveyor belt type rolling road….i think it’s possible but getting the joins to run smooth and you would probably need to find a way to synch the speed of the rolling road to the the engine
Yeah that's something I considered - I just couldn't think of how to make a reliable belt... so went with this idea!
Thanks for watching, Sam :)
Very interesting video today Sam was so interesting to see how much better it was with bearings
I know I'm probably going to be completely wrong but I assume it has to do with testing the maximum / where induced by running carriages / trains for extended distances without needing an extremely long track
It would be interesting to see if there’s any wear if a lubricant would have delayed the wear and if so what one was most effective
Is it a tester for rolling stock free-wheeling capabilities?
Very close!!
Maybe it's a Bambleweeny 57 Sub-Meson Brain which when finished just needs a Brownian motion like a cup of tea.😉
This would make a good math/science lesson for school students.
Excellent! Results update please, and standard mazak or modern equivalent against brass bushes would be worth knowing...!
Thanks Mikey - got to produce the wagon first haha... that's the tricky part!
Thanks for watching, Sam :)
Neat. Watching the thing shake on the mechanism near the end while it was pinned in place reminded me of a squirming little sub strapped to some sort of a pleasure chair. Yes, i am aware my mind is very weird
I thought it was going to be some kind of spool all the way to the end. Not sure this would work on anything with trucks so my mind didn't even guess this was a freight car roller.
At 3 mins 34 I believe that is something to do with cleaning the wheels of rolling stock. Dave
My first thoughts were it was either an automated toilet paper dispenser. Or a wheel cleaner.😁
Ok paused at 1:45 going to guess some form of camera mount that rolls to allow you to follow a loco along smoother when testing the crawl etc?
Reminds me of holding a dremel with a rubber Lego tyre fitted to a wagon wheel at 20,000 rpm. That melted the bearing right out.
The wagon wheels were doing an 85 real mph and made a very high pitched screaming sound.
You can make your resin frames work with brass top hat bearings, these add maybe 50p max to the material cost per wagon but improve the running and longevity a great deal.
With properly sized holes in the axle boxes they are a straight push fit and take a few seconds to put in.
Way to go Professor Sam!
I'm at 1:56 on the video and i'm guessing it is for testing the pulling power of a locomotive.
Flexi track straightener ?
Genuinely expected it to be a cable drum for a cable powered train/tramway D':
i hope we find out about the pizza some day :D But early on i thought it was some sort of winch system for an inclined slate mine or something
Hi! good work Sam! Being from technical background I really enjoyed the marriage of model railway with NDT!
I have created a shelf layout of my own with all your reviewed products in my shed:) I could not find anything in your etsy page?
Thank you so much glad you liked it! Yeah unfortunately everything sold out almost immediately last week - I'm working on the next models now though!
Thanks for watching, Sam :)
Hi Sam! I have preordered the accurascale J69. I see a lot of potential in the model. Can you do a review on the model
2:24 my guess is to curve flex track
Fascinating video. It would be interesting to know the comparative scale speeds. If you ran your engine around your layout at approximately 40mpg, then your device would run your wagon at 400mph? Is that right? 😮
haha it would be interesting - I'm not sure about that, I'd like to know the answer though!!
Thanks for watching, Sam :)
2:24 Fishing rod!
Edit: damn
I have online lectures to go through, can't watch this now sorry! 😔
Looks like another one of your smart inventions, can't say I knew what it is for before peeking. 🤣
Ahh well good luck with your lecture!
Thanks for watching, Sam :)
4:36 - looks like a winch of some kind to me. Can't really figure out what for, though.
haha yeah it does look like a winch!
Thanks for watching, Sam :)
Tooling jig for handspiking track.
The Institute of Rail Research at the University of Huddersfield has a static rig capable of running real wagons and/or bogies at alarming speeds to study wheel-rail interactions. Not 3D printed though 😂
haha fascinating - how I'd love to have a play with that!
Thanks for watching, Sam :)
My guess within 30 second of the video, a respooler. So your filament can be rerolled on the holder. Because of knuts in the filament is ANNOYING!
I was wrong 😂
Took me until you revealed the wagon lol, very smart!
haha it's an odd one isn't it? Glad you liked it!
Thanks for watching, Sam :)
See, if they just taught maths with railway-based example problems instead of shopping for fruit, we'd all* do better.
* All is assumed to mean people who like trains.
Multiply your numbers by 76.2 to give the scale speed.
Excellent project nicely engineered.
Thank you!!
Was the problem too many comments to reply to?
No, it's not that. Look again. I think the wagon on top of the wheel thingy is a clue.
Hahaha!! Not sure how to fix that 😂
Sam, you left us on a cliff hanger....
How was the pizza dinner with Chloe!?
Sam, You must add sound effects to your new test equipement ! Personally, I like the sound of a jet engine !!😊
haha that would be amazingly satisfying!
Thanks for watching, Sam :)
I was thinking it was a rolling road of some kind but was then thinking the radius was too steep for that to work
I think I can give you that then, well done!
Thanks for watching, Sam :)
Havent watched the video yet, but i can already tell its a machine that sends the souls of damned bad model trains to the underworld.😊
How long did it take you to design that machine and how long did it take to print the parts ?
Very interesting video.
It took about 2-3 hours to design, and probably a full day to print the bits!
Thanks for watching, Sam :)