Hey my ole friend I have run nitro in my Jr fuel dragster & in my racing karts. First let me ask you some questions. How what % of nitro are you trying to run? What oil are running? & what percent are you running. No one runs 100% nitro in a 2 stroke, so I hope you are not trying to do that. 25% is alot for a two stroke. Even in my dragster I kept it no more than 50% even though some guys ran more, they also blew up a lot of engines. Also you do not have to run over 20 to 1 oil mix. Remember your fuel to air mixture is under 7 to 1 with nitro & alky, so you are already getting plenty of oil at that mix. Just things to consider. Remember also mixing oil heavy fuel makes for heavy viscosity & screws up fuel flow & setting. Hope this helps.
Been following since first video almost, yea that made me super happy, can't believe he didn't change to a bigger carb (or fuel injection) long before. He clearly knew, even i could tell it was actually running out of fuel. When i heard it run under load now, that was so damn exciting! I don't fully understand the dyno. I guess it depend on the pivot and how much load that sensor see? Then i should be pretty accurate if his measurements where right. 15hp crank is already impressive! Can't wait until he adds boost and timing!
@@Xfacehack Yeah, i think hes close to the point that efi will probably give him the adjustability and tuneability especially thru the wild flow profiles this engine will have. Again, carbs do work, but i suspect this engine will have a extremely wild fuel flow profile which might be very difficult to achieve a nice idle mixture all the way to WOT at redline with these types of carbs.. At least with efi he could have a dynamic flow chart/profile which will allow him to keep fuel flow efficient.. And yes, typically the load is measured around the pivot point which is typically the crankshaft planar point. I dont quite know how he is compensating for the offset pivot (torque moment) in his torque values especially since the engine is basically trying to "claw itself up the drive chain" with a offset pivot, in simplistic terms. It is calculable, but definitely makes the math more difficult. Regardless, what he has achieved is fantastic!
Haha, 21:49 watching the fuel in the tank magically disappear.... That carb is a really cool design! The numbers looked really promising on that last run too. Keep it up man!
Hehhe yeah man. That thing sure is thirsty! I bet u that a good tune will help ALOT. It seems so be ultra mega duper rich now. Can a broadband lamba be used to measure the live lean/rich balance?
Thing I would add to the dyno if you want to keep using clutches: Tachos on both input and output pf the clutch to be able to determine slip ratio, good to know when and how much your clutch is slipping
@@2STROKESTUFFING hey hvis du vil have 99.95% nitromethane I 25l så sig til. Og 99.95 % methanol. Det er meget bedre end rc nitro fuel hvor der også er alt for meget oli i, ellers god dag
Awesome to see the progress mate! May I suggest using elastomeric bushings on each end of the load cell to damp out the high frequency vibrations that the load cell is seeing? That might give you more reliable torque measurements.
Definitely need to smooth vibration off the cell load, none digital electronics can read cell values correctly with that much vibration. It's nice to hear again pure sound off 10+K rpm. 👍
You dont want to dampen the information to the Yourdyno unit. The software has the ability to do that. When there is retardation happening and the engine is on throttle it wont be rough at all. Remember he is just using the dyno software all in fully manual simplified mode. This is not power runs yet.
Duude! That last pull looks really promising considering that you’re still in an early stage of this new 2 smoker concept. Keep it up! I feel like a kid on christmas eve everytime you upload a new video😅
Always glad to see you making progress. Thanks to the supporter who set the carb allowing for the progress. See you next time for more adjustments. Dazza from Australia
I love your channel! Amazing what a dedicated individual can do. Congrats on making it your full time job! I suggest a spring loaded chain tensioner. If you maximize the wrap around the small sprocket, you can transmit more torque. Also have a spring loaded tensioner would greatly reduce the swing in the long chain in between pushing/pulling phases. And please, put a guard between you and any moving part. If the chain snaps it could really cripple you!
Thank the lord 🙏🏻 I was so worried about this engine having catastrophic failure, now I’m very much thankful that you have got to the bottom of the bogging down. 👌🏻
You have made me want a 2 stroke bike for a while now, and over this winter I’ve been building one in my apartment. Thank you for all the info on how they work and the coolest engines on TH-cam! Keep on keeping on!
Great video. I like how you are growing into your videography, constantly tweaking this and that, same as your engines. Dont get discouraged, keep up the great content. Cant wait to see the dyno graphs of the 2 engines to compare the different power curves from the radically different engine designs.
I think you should switch to fuel injection ultimately. This way you'll have better control, and the fuel can be added downstream of the blow off valve so it only dumps air when the boost goes too high.
Where I used to work we had a throttle lever with a twin cable system to pull and push the throttle, like an aircraft, very useful for fine throttle adjustable
Never been so early on a video i dont know what to say even if he will see it. I really like these videos educational and funny think most school teachers need tips from this fella
@@ianbuilds7712 True, but without algebra, geometry, and calculus, he would not have been able to simulate the system when he designed it. As an engineer, I had to learn a lot of really boring shit that was later very useful to design really cool shit.
My guess, and that all it is, would be timing will make a huge difference. If you’re only at 15 degrees I’d say it’ll take double or triple that. I know nitro 4 stroke hemi engines back in the early days loved as much as 60. In fact that’s how Don Garlits started setting world records with the 426, by adding timing to try and blow the engine up, because he didn’t like them as much as the 392.
excellent idea with the speedway carb, massive speedway fan myself, flat slide carbs work loads better than older style butterfly carbs for speedway, loving the progress keep it up!
I missed the ending of the video. Just rewatched it again. Great wrk. That’s a cool carburetor. I’ve nvr seen them before like that. Think your onto something good now. Excited
I saw a device on another channel that was new to me and you've probably heard of but may be helpful at this point. It was a scope that goes in the spark plug hole and allows you to actually run the motor and see the kernel and color of combustion. This seemed so much better than reading plugs and the variables that skew that info
@@malcrandall1309 thanks. I know or care very little about scooters but I'm a two stroke but and mainly old Merc outboards. Lately been watching the Russian scooter guy Samode or something like that. I can't believe I never even heard of such a device. I would think getting squish and port angles perfect would really show in one of the scopes. Most of the motors I modify are 50s era cross flows so looper ports weren't even considered then. A view into them would help alot. I'm fired up on finding one now. Thanks for info.
@@miketee2444 Hello Mike, thanks for your nice reply. I must admit to being a two stroke man as I started road racing at 18 making our own bikes and tuning engines mainly 250 singles, making our own expansion chambers from cut up 45 gallon drums then gas welded. Of course there was no internet then so 99% was guess work, more enthusiasm than money! I have being following Alex for 4 years now since the SPX era which was more home tuning than the highly technical stuff they do now. I admit I prefer normally aspirated and running pump fuel. Regards Malc.
best video in a long time. all of them are good. been a fan for a long time. you are becoming a very good "director". i am very excited to see the finished results of both engines. and another run at the salt flats.
I'm hoping Alex will be doing some crank balancing videos as soon as we get back to the PiP project. The vibration was so bad on the SPX variant that the needle wouldn't seat right causing fuel fountains from the carb. I feel better crank balance will lead to better performance.
@@Tootall206 Hello, Just out of boredom I re watched the video again and watched closely around the 9 minute mark for the carb vibrating but I couldn't see it! What I did see was the dump valve shaking at the front of the engine, this has being commented on previously that it needs a bracket. Is this is this the item your referring to.
I love watching these develop. Could you remind us what PiP stands for once in a while? I forget and trying to find the one video where you mention it takes forever!
Just found the answer from a previous video made by Alex on the 30th September 2020. PiP stands for Primus inter Pares which translates to " A first among equals " Nice one Alex. PiP also stands for " Pride in Performance "
I can't remember exactly when I started following..seeing you so happy .full time living the dream..the last 5min of video are soo exciting for all that know.. Mad genius my brother..big love
Hey, I like your intros. Don’t stop doing them! I’m here for the content, but the way you film and edit your videos really sets you apart from your TH-cam peers.
hello from bigfoot territory. your ability to stay calm and focused is impressive .and a great inspiration .also a good role model for everyone ,especially young people .thanx keep up the good work
Love your series here but I get squeamish looking at that open chain running the the background. Any thoughts on a guard of some sort as any mishap would be a terrible injury.
i am waiting for the moment when the ignition diagram is adjusted to the final position and the revolution limiter is released. the increase in power is really great at that point.
Haha I fell asleep infront of the TV and woke up when the throttle got stuck, engine screaming at 11000rpm! 😄 soo much better sound with the new carb! Angry! Thank you for showing really interesting stuff on YT /Engine nerd from Sweden.
Looks like the dyno is much happier now! Even just watching the numbers on the video, they look much cleaner. I think your load cell calibration is definitely good enough for now too - you’re probably within the accuracy range of the torque wrench at this point. Thanks for the shoutout (and you said my name perfectly, don’t worry!).
When you mentioned the gasket leaking I wanted to say that a great product to have in the shop is silver RTV silicone gasket maker. The silver is high temp rated and you can seal almost anything temporarily and the correct stuff permanently. Obviously 3m, permatex and other companies offer it but the best brands available are the OEM stuff the Japanese car makers use when building cars. They can be expensive but "Hondabond" is not too bad and it's arguably one of the best available. The dealership parts department always has it in stock and you can make gaskets, seal leaks, glue things together and much more. Just my two cents.
I would put a capacitor on the output of the load cell to smooth the voltages coming out of it, wouldn't know what value but start low and increase to get smoother readings. Sort of like old fuel gauge when the capacitor went bad they would swing wildly as the fuel sloshed around
Also consider that short straight exhaust stub will resonate and return a positive wave returning to the exhaust port which can interfere with exhaust flow, hence a tapered lead and a diffuser of about 9 degrees.😉
This is just a thought; I think your waste-gate that your using for boost control is contributing to the massive amount of fuel consumption and making the carburetor seem smaller than it actual is, given the power made....I would think as long as you keep the pulley size that you have now, that it could be eliminated from the circuit.....I think another issue that the waste-gate may cause, is being that it’s a pressure differential device (not load sensitive) it opens in both relation to throttle input and rpm....which could be leaning out certain speed / load operating regime’s but operate totally different in others....making the carb “numb” to adjustment.
I would suggest dropping the D in your PID to zero. Get your P and I working smoothly first. Often times you don't need the D and it can introduce a ton of oscillation in your loop. I usually start with only P, bringing it up until I see significant oscillation, then back it down and begin adding in the Integrator. That should help get your load control smoothed out, then you can tune your engine with a stable load
I don’t have any technical advice to offer because my interests are so far removed from your own, however I will say that I enjoy watching your logical problem solving process.
maybe before leaning out, for your safety make a longer throttle cable so you can stand on a safe spot or behind something. with some clamping the wire at some spots is should work fine, just like the old engine dynos. Or let it be controlled by a servo motor or something. That engine is getting brutal man keep it going.
The slide needs sorting along with a decent return spring. I would like to see the carb operated by a twist grip and brake lever operating the retarder manually. More pull on the lever more current to the retarder coils. The lever could be used as a emergency stop by pulling hard stalling the retarder and engine. This would allow one hand operation.
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Man I have to admit that chain made me nervous when you suddenly started reaching at that new carb
Hey my ole friend I have run nitro in my Jr fuel dragster & in my racing karts. First let me ask you some questions. How what % of nitro are you trying
to run? What oil are running? & what percent are you running. No one runs 100% nitro in a 2 stroke, so I hope you are not trying to do that. 25% is alot
for a two stroke. Even in my dragster I kept it no more than 50% even though some guys ran more, they also blew up a lot of engines. Also you do not
have to run over 20 to 1 oil mix. Remember your fuel to air mixture is under 7 to 1 with nitro & alky, so you are already getting plenty of oil at that mix.
Just things to consider. Remember also mixing oil heavy fuel makes for heavy viscosity & screws up fuel flow & setting. Hope this helps.
7:21 A shoe on a tripod?!? WTF???
@2STROKE STUFFING use manual mode on the dyno instead of zero ramp rate in power sweep mode
I would introduce myself to Aalt Toersen. 😉
th-cam.com/video/srb0U0gx01I/w-d-xo.html
The values on that last pull are super promising. Cant wait to see how this progresses!
Been following since first video almost, yea that made me super happy, can't believe he didn't change to a bigger carb (or fuel injection) long before. He clearly knew, even i could tell it was actually running out of fuel. When i heard it run under load now, that was so damn exciting!
I don't fully understand the dyno. I guess it depend on the pivot and how much load that sensor see? Then i should be pretty accurate if his measurements where right. 15hp crank is already impressive! Can't wait until he adds boost and timing!
@@Xfacehack Yeah, i think hes close to the point that efi will probably give him the adjustability and tuneability especially thru the wild flow profiles this engine will have. Again, carbs do work, but i suspect this engine will have a extremely wild fuel flow profile which might be very difficult to achieve a nice idle mixture all the way to WOT at redline with these types of carbs.. At least with efi he could have a dynamic flow chart/profile which will allow him to keep fuel flow efficient..
And yes, typically the load is measured around the pivot point which is typically the crankshaft planar point. I dont quite know how he is compensating for the offset pivot (torque moment) in his torque values especially since the engine is basically trying to "claw itself up the drive chain" with a offset pivot, in simplistic terms. It is calculable, but definitely makes the math more difficult.
Regardless, what he has achieved is fantastic!
@@TheMoistpotato I couldn't agree more.. so awesome so far
Haha, 21:49 watching the fuel in the tank magically disappear.... That carb is a really cool design! The numbers looked really promising on that last run too. Keep it up man!
Was gonna comment the same! A vortex there
Upvote when you did not notice that the first time. But dang, thats some top fuel dragster level of IPG (inches per gallon) over there...
Hehhe yeah man. That thing sure is thirsty! I bet u that a good tune will help ALOT. It seems so be ultra mega duper rich now.
Can a broadband lamba be used to measure the live lean/rich balance?
If you are still seeing noise on signal lines try using sheilded cable for signal lines. Thanks for your time.
I would highly remicommend that!
Thing I would add to the dyno if you want to keep using clutches: Tachos on both input and output pf the clutch to be able to determine slip ratio, good to know when and how much your clutch is slipping
or just dont use a clutch
this is great, i love how much your audience can be right there alongside you as these things get done. Truly one of the best channels on youtube.
I can't wait to see the boost tuning. Love the videos! The increase in production quality since you went full time is clear.
Finally I feel the same flow like 2-3 years before when I become addicted to your videos. Thank you!
😁 awesome!
@@2STROKESTUFFING hey hvis du vil have 99.95% nitromethane I 25l så sig til. Og 99.95 % methanol. Det er meget bedre end rc nitro fuel hvor der også er alt for meget oli i, ellers god dag
PUT A GUARD ON THAT CHAIN!!!
Good progress on this engine.
At least some sort of bumper Alex. The amount of kinetic energy in the retarder is scary..
I first thought what would happen when the chain snaps. Not to mention this fixed gear setup is likely to eat fingers :p
Stop being soft. Motorbikes making 100+hp dont throw those exact chains unless they are super un maintained.
@@aptget1974 Anxiety is so disabling.
@@MrJermbob
I was much more concerned about him getting his fingers caught in the chain and sprockets.
Awesome to see the progress mate! May I suggest using elastomeric bushings on each end of the load cell to damp out the high frequency vibrations that the load cell is seeing? That might give you more reliable torque measurements.
I also suggested that in a comment on his last video...
@@Henning_S. it was easier been noticed when he had fewer subs haha commenting to help the comment
Definitely need to smooth vibration off the cell load, none digital electronics can read cell values correctly with that much vibration.
It's nice to hear again pure sound off 10+K rpm. 👍
@@milankostic3717 Yourdyno software has a nice smoothing in the software for this type of action. Dont stress guys.
You dont want to dampen the information to the Yourdyno unit. The software has the ability to do that. When there is retardation happening and the engine is on throttle it wont be rough at all. Remember he is just using the dyno software all in fully manual simplified mode. This is not power runs yet.
Duude!
That last pull looks really promising considering that you’re still in an early stage of this new 2 smoker concept. Keep it up! I feel like a kid on christmas eve everytime you upload a new video😅
Always glad to see you making progress. Thanks to the supporter who set the carb allowing for the progress. See you next time for more adjustments. Dazza from Australia
I love your channel! Amazing what a dedicated individual can do. Congrats on making it your full time job!
I suggest a spring loaded chain tensioner. If you maximize the wrap around the small sprocket, you can transmit more torque. Also have a spring loaded tensioner would greatly reduce the swing in the long chain in between pushing/pulling phases. And please, put a guard between you and any moving part. If the chain snaps it could really cripple you!
Bloody awesome the support you get and try new components quickly. Leading edge development
Thank the lord 🙏🏻
I was so worried about this engine having catastrophic failure, now I’m very much thankful that you have got to the bottom of the bogging down. 👌🏻
The engine sounds much healthier with new carb .getting so close! Great job so far when I see 2Stroke stuffing I really can’t click fast enough.
1:22 Patreon advertisement was perfect! :D
You have made me want a 2 stroke bike for a while now, and over this winter I’ve been building one in my apartment. Thank you for all the info on how they work and the coolest engines on TH-cam! Keep on keeping on!
Great video. I like how you are growing into your videography, constantly tweaking this and that, same as your engines. Dont get discouraged, keep up the great content. Cant wait to see the dyno graphs of the 2 engines to compare the different power curves from the radically different engine designs.
I think you should switch to fuel injection ultimately. This way you'll have better control, and the fuel can be added downstream of the blow off valve so it only dumps air when the boost goes too high.
Where I used to work we had a throttle lever with a twin cable system to pull and push the throttle, like an aircraft, very useful for fine throttle adjustable
Yes, street bikes use the push/pull in USA.
Is that on two stroke bikes as well?
7:20 wait, wait, wait....wait a second. You just can't show a shoe on a stand and not explain. 🤣
😁 used to set focus
Well, I just can't say enough how much I love these videos. Crazy 2T stuff, crazy camera shots, crazy Alex. F-ing brillient.
I get goosebumps every time I see a new vid now ;)))) love you man…!
3:04 That music is so soothing 😌 LOVE THE CONTENT!! Your uploads are always a highlight to my week 💪
Your musical choices are excellent!
6:24am PST and this is what i see, no better time for a little 2 stroke stuff
Never been so early on a video i dont know what to say even if he will see it. I really like these videos educational and funny think most school teachers need tips from this fella
It really helps when the teacher is talking about cool shit... If this guy was talking about algebra it would be terrible.
@@ianbuilds7712 True, but without algebra, geometry, and calculus, he would not have been able to simulate the system when he designed it. As an engineer, I had to learn a lot of really boring shit that was later very useful to design really cool shit.
My guess, and that all it is, would be timing will make a huge difference. If you’re only at 15 degrees I’d say it’ll take double or triple that. I know nitro 4 stroke hemi engines back in the early days loved as much as 60. In fact that’s how Don Garlits started setting world records with the 426, by adding timing to try and blow the engine up, because he didn’t like them as much as the 392.
I'm really liking the green accents in the shots! Looks great!
Maybe a chain cover would be a good Safety option 😊
yep - I had the same worry several times since work on the dyno started.
Seems like it sounds better with the added timing that carburetor is really cool.Please keep sharing this with us!
You got so much lined out, great job. I'm very happy you quit your 9-5 and went full time with your passion. It shows in your videos
Slow and steady progress, I love videos like this. Big thanks 2SS!!
Damn. I’ve been watching this channel for years- the progress I’ve witnessed is Leaps and Bounds from the time I began watching
excellent idea with the speedway carb, massive speedway fan myself, flat slide carbs work loads better than older style butterfly carbs for speedway, loving the progress keep it up!
The whole thing is very interesting and the music is marvellous !! Thank you.
Really impressed with everything coming out of this channel. Great work!
So much progress has been made throughout this journey!!!! This is awesome!!!
I missed the ending of the video. Just rewatched it again. Great wrk. That’s a cool carburetor. I’ve nvr seen them before like that. Think your onto something good now. Excited
I saw a device on another channel that was new to me and you've probably heard of but may be helpful at this point. It was a scope that goes in the spark plug hole and allows you to actually run the motor and see the kernel and color of combustion. This seemed so much better than reading plugs and the variables that skew that info
In the UK 40 years ago they were known as " Colour Tune "
@@malcrandall1309 thanks. I know or care very little about scooters but I'm a two stroke but and mainly old Merc outboards. Lately been watching the Russian scooter guy Samode or something like that. I can't believe I never even heard of such a device. I would think getting squish and port angles perfect would really show in one of the scopes. Most of the motors I modify are 50s era cross flows so looper ports weren't even considered then. A view into them would help alot. I'm fired up on finding one now. Thanks for info.
@@miketee2444 Hello Mike, thanks for your nice reply. I must admit to being a two stroke man as I started road racing at 18 making our own bikes and tuning engines mainly 250 singles, making our own expansion chambers from cut up 45 gallon drums then gas welded. Of course there was no internet then so 99% was guess work, more enthusiasm than money! I have being following Alex for 4 years now since the SPX era which was more home tuning than the highly technical stuff they do now. I admit I prefer normally aspirated and running pump fuel.
Regards Malc.
So stoked you are heading forward!
best video in a long time. all of them are good. been a fan for a long time. you are becoming a very good "director". i am very excited to see the finished results of both engines. and another run at the salt flats.
Really great progress. I'm so pleased you are able to do this full time. Thank you.
That carb is Awesome looking! You are my favorite TH-camr at the moment! 😎
Thanks man!
awesome!!! 15hp is a crazy baseline for 50cc, now to carefully turn it up
@9:00 Your carb is vibrating. Thats why it starts leaking. It can interfere with the flow through the jets too...
I'm hoping Alex will be doing some crank balancing videos as soon as we get back to the PiP project. The vibration was so bad on the SPX variant that the needle wouldn't seat right causing fuel fountains from the carb.
I feel better crank balance will lead to better performance.
@@malcrandall1309 I doubt that balancing will be enough. Make a bracket to support the other side or the carb.
@@Tootall206 Hello, Just out of boredom I re watched the video again and watched closely around the 9 minute mark for the carb vibrating but I couldn't see it!
What I did see was the dump valve shaking at the front of the engine, this has being commented on previously that it needs a bracket. Is this is this the item your referring to.
@@malcrandall1309 I've checked it again. You're right. It's the dump valve.
PLEASE make longer vidjas! LOVE the content and can't wait until Bonneville this year!
Happy to be here for another two-stroke journey
Time to find the melting point of piston crown, and then fatten it up a little!
Yep.
The numbers on that last pull look amazing, look at the torque 😩
Was watching the fuel going down with your last setting. That thing drinks!
Just imagine what it will drink at 20,000rpm with wide open throttle.
I love watching these develop. Could you remind us what PiP stands for once in a while? I forget and trying to find the one video where you mention it takes forever!
Just found the answer from a previous video made by Alex on the 30th September 2020. PiP stands for Primus inter Pares which translates to " A first among equals " Nice one Alex.
PiP also stands for " Pride in Performance "
Screened cables and ferrite rings On the cable might help.
I can't remember exactly when I started following..seeing you so happy .full time living the dream..the last 5min of video are soo exciting for all that know..
Mad genius my brother..big love
Never seen that kind of carb before. What an improvement. Therefore EFI with full control will be a game changer.
Hey, I like your intros. Don’t stop doing them! I’m here for the content, but the way you film and edit your videos really sets you apart from your TH-cam peers.
Made my day to see some really good success. It's been frustrating, and I'm just sitting behind a screen! Awesome work! Thanks for sharing!
hello from bigfoot territory. your ability to stay calm and focused is impressive .and a great inspiration .also a good role model for everyone ,especially young people .thanx keep up the good work
Ohh yeah, this is getting real interesting now, so glad you persevered through. The rewards will start coming now.
Cheers from Australia
That new carburator design is brilliant.
Sounds a stack better from bottom to top using the speedway carb top job
Sir, you are a scholar and a gentleman, real role model material.
So happy to see your channel doing well you deserve it!
You made my day, watching the video right now!!
Love your series here but I get squeamish looking at that open chain running the the background. Any thoughts on a guard of some sort as any mishap would be a terrible injury.
i also thought so,dont want another Van Gogh
Great vid today man! Love the extra detail/length!
chain tensioner would help to
i am waiting for the moment when the ignition diagram is adjusted to the final position and the revolution limiter is released. the increase in power is really great at that point.
One gremlin down, the rest to go! Thank you as always!
-CY Castor
Haha I fell asleep infront of the TV and woke up when the throttle got stuck, engine screaming at 11000rpm! 😄 soo much better sound with the new carb! Angry! Thank you for showing really interesting stuff on YT /Engine nerd from Sweden.
Looks and sounds really like improvement!
Nice. Now it starts looking promising. Looking forward to the next video.
if you add a intake air filter box you should be able to leen it out and save fuel by sucking in the fuel mist.
I can tell you are excited!!!!!!!! Awesome progress we are excited too!!!
Looks like the dyno is much happier now! Even just watching the numbers on the video, they look much cleaner. I think your load cell calibration is definitely good enough for now too - you’re probably within the accuracy range of the torque wrench at this point.
Thanks for the shoutout (and you said my name perfectly, don’t worry!).
Bloody fantastic video. Really cool to see some successes.
Awesome 👌 Good luck, I can't wait for the next installment
Awesome mate, love the effort in camera quality, love the effort in music, love everything you do keep it up!!
When you mentioned the gasket leaking I wanted to say that a great product to have in the shop is silver RTV silicone gasket maker. The silver is high temp rated and you can seal almost anything temporarily and the correct stuff permanently. Obviously 3m, permatex and other companies offer it but the best brands available are the OEM stuff the Japanese car makers use when building cars. They can be expensive but "Hondabond" is not too bad and it's arguably one of the best available. The dealership parts department always has it in stock and you can make gaskets, seal leaks, glue things together and much more. Just my two cents.
Awesome result with the speedway carb
I saw 15 hp
Getting there booom
It's starting to look like some proper power coming down the line - nice.
I would put a capacitor on the output of the load cell to smooth the voltages coming out of it, wouldn't know what value but start low and increase to get smoother readings. Sort of like old fuel gauge when the capacitor went bad they would swing wildly as the fuel sloshed around
"iv'e got to go inside and unload" haha floored me there alex.brilliant work as ever though.
awsome video man im happy to see things really start to come together and start working how you imagined
So stoked for you now 😍 🙌
Keen to see how it reacts to a bit more boost 😀
With the new carb I hardly saw any negatives in HP and she made up to 15ho I say things are looking up for you! I am excited to see what’s next!!
This is really nice stuff man! Be careful not getting caught in the chain!! Keep up the good work
Thanks for sharing this. Great to watch a unique scratch build come to life.
Also consider that short straight exhaust stub will resonate and return a positive wave returning to the exhaust port which can interfere with exhaust flow, hence a tapered lead and a diffuser of about 9 degrees.😉
The shaking chain might be the source of noise on the load cell, if thats a problem.
We were talkn about a twin needle single flat slide version - probably twin supply lines too.
Love the new video style. Like me I think you are watching to many Wes Anderson movies. That pan 8:45 made me laugh.
This is just a thought; I think your waste-gate that your using for boost control is contributing to the massive amount of fuel consumption and making the carburetor seem smaller than it actual is, given the power made....I would think as long as you keep the pulley size that you have now, that it could be eliminated from the circuit.....I think another issue that the waste-gate may cause, is being that it’s a pressure differential device (not load sensitive) it opens in both relation to throttle input and rpm....which could be leaning out certain speed / load operating regime’s but operate totally different in others....making the carb “numb” to adjustment.
I would suggest dropping the D in your PID to zero. Get your P and I working smoothly first. Often times you don't need the D and it can introduce a ton of oscillation in your loop. I usually start with only P, bringing it up until I see significant oscillation, then back it down and begin adding in the Integrator. That should help get your load control smoothed out, then you can tune your engine with a stable load
Thanks for the advice!
fan va jag älskar din yt kanal :D mannen fortsätt vara KUNG!!!!
I don’t have any technical advice to offer because my interests are so far removed from your own, however I will say that I enjoy watching your logical problem solving process.
maybe before leaning out, for your safety make a longer throttle cable so you can stand on a safe spot or behind something.
with some clamping the wire at some spots is should work fine, just like the old engine dynos.
Or let it be controlled by a servo motor or something.
That engine is getting brutal man keep it going.
The slide needs sorting along with a decent return spring. I would like to see the carb operated by a twist grip and brake lever operating the retarder manually. More pull on the lever more current to the retarder coils. The lever could be used as a emergency stop by pulling hard stalling the retarder and engine. This would allow one hand operation.
Great videos love your passion and enthusiasm!
Very good video for a sunny sunday 👍🏻 Good work as always 😉