Great diagnostics and solutions to the issues at hand. Regarding the tongue depressors, whatever works for you seems to be the right way to resolve the issue at hand. Don't pay any attention to the naysayers as there are many ways to to resolve the same problem. Please keep these videos coming as I learn something from each and every one of them!
Another great tutorial in diagnostic methodology and practice. Clever ways on adjusting the timing. Don't get to see.a timing light in use very often. Or tongue depressors used in such a creative way. Well done.
Do it your way like I do,at 16/17yrs old my Bus from work as apprentice Commercial Deisel Fitter dropped me at Andrews Motorcycles in Belfast I used to drool over the Bikes in showroom .Later somehow I acquired a street race version As1, road it legally .Had it scrutineered for 1st race meet.During the race gearbox selection tumbler suited its self changing up &down.Finishing Last and too costly to continue pursuit of Racing.Love your approach to diagnostics👍
Turns out close enough is only good for horseshoes... It took making sure all the parameters were adjusted spot on to make this twin run correctly. Well done, Dale.
You can't beat an angry two stroke twin Dale. You've made a real difference to this one. I agree that slightly sharper timing might help. Don't listen to the naysayers Dale, your methods are sound and your results speak for themselves. Best wishes, Dean.
Thanks Dean, yes, these Yamaha twins are the coolest, nothing sounds like them. Yeah, think I will see how a little more timing works. Thanks, buddy, for the shout out on your channel, I don't think about that like I should, I will try to remember to do the same.
I hear you Frank, I don't know how you do it. You can always put more clothes on, but there is a limit to how much you can take off and stay out of jail. There is a house for sale just down the street, where I turn around. LOL
@@montana2strokeracer we hide out in the house only go out early or late if we have to. we have about 8 months with nice weather, but i think i like the freezing 40s and 60`s here better.
Had one just like yours back in the day. They run exceptionally well and are very impressive for a 125cc, but when the needles are opened past 3/4 throttle, it's like a rocket!
Hey Bart, I remember these from my youth also. When I found this one 10+ years ago, I though finally I found one. But life got in the way and just didn't have time to mess with it till now. I think one of the best investments has been the motorcycle lift, it is so easy to work on these now, I remember working on them on the floor with my head bent down. That is probably why I didn't get it figured out back then. I am looking forward to the first real ride, I felt it ran very good, but I have not got close to full throttle yet. Wow............I'm looking forward to the rocket effect. Thanks Bart.
Great job Dale, another sound bite from the 60's for us old guys. Those little Yamaha twins have an amazingly throaty growl to them, sounding even better to me back then than my R5 350. Maybe it was due to reduced mechanical noise due to the smaller size. And those chrome air cleaner silos are wicked!
Right on Wayne, nothing like the sound of the Yamaha twins, only thing that makes it better is some bean oil in the tank. I really like the air cleaners also, the HS1 90 twin has them too. Be getting back to that one soon.
Excellent video and excellent work my dear friend and brother does. With all due respect if I may suggest to add about 3 to 4 ounces of Chevron Techron fuel cleaner to a full tank of gas may help. For bless you daily.
Thanks Dale , she sounds pretty good now but boy is she noisy , cant tell if thats piston slap or what . I think the tongue depressors are Genius ! And this way if anyone gets a sore throat you can check for irritation on the old Tonsils . Thanks Dale , You know I saw that 380 on the shelf .
Thank Murray, I really think she is pretty tight, there is a lot of things rattling on this bike, the non-spring-loaded foot pegs front and rear, and the seat front bracket, think I showed that seat bracket in the video. Lot of noise makers. I'm going to try to tighten it all up, I get tired of hearing stuff like that. Ha, ha, ha, tongue depressors/sore throat. Yeah that 380 is still here.
Thanks James, I have done a lot of trial and error also, it doesn't matter your process, it's the outcome. You are right my friend.......nothing sounds like a Yamaha twin.
getting ready to time the rd350 I am rebuilding (and wiring on the bike) Nice refresh for me been 30 years since I did one LOL. On the carb sync I always used my fingers lol. One jammed in each carb. get it close then use a flow gauge.
I would like to find a RD250 or 350, nice bikes and quick. They also have that unique Yamaha twin sound, just like this one, but a bit throatier. The space behind the carbs is so limited here, you just can see in there. You can certainly feel if both slides are starting up, but a nice visual is helpful. Let me know how your project goes. Always interested in other folk's projects.
@@montana2strokeracer the stick thing is a neat Idea, I can see the usefulness of it. my project is a parts bin build, started with a titled frame and I have been finding parts lots to build it. I am replicating an R5B I had 35 years ago. your twin crank rebuild was handy to watch before I did mine, (I had commented on that vid) knocked it out in a morning with great results. working on throttle cable and electrical now, then test run and then pull it apart for paint. I need to video some of it and put it on my channel. Love your work the guys I used to ride with are gone or busy with life, (I am retired now) Nice to see how someone else approaches rebuilds.
As versatile as you are and as a complete mechanic and machinist as you are , I'd say it's irrelevant what some armchair wanna be mechanics think. It's very obvious what you do works for you. Thoroughly enjoy what you do
Hey RC, thank you for the kind words, I guess it just comes with the territory, we are all different. I won't argue with anyone, and I don't profess to be right all the time. I just enjoy what I do and have found there are others out there that enjoy the same stuff. The haters are few and far between, everyone else is just fantastic, and offer a lot to the channel. I appreciate each and everyone. Thank you for supporting the channel, I sure appreciate it.
hate 2 tell this but i told ya so, one side was perfect in time and the other was fireing a little 2 late, you got er dude, she's buzzing like a saw, there ain't nothing dale sweger cain't fix, don't you just love it when a plan comes together, another one 4 the record books, glad i went along 4 the ride on both these vid's, catch u on the next one...
Thanks Kyle, I do for the most part, I read all the comments, there is value in them all. Sometimes they are just more confrontational than they need to be. Thanks buddy.
My 73 GT250 did the same thing low exhaust pressure on the right side and no power. I cleaned the carburetor and points and set the timing. Everything at once and fixed it. So I don’t know what was the main problem but it runs good now.
BWAhahaha! Some folks whining at YOU, for YOUR excellent diagnostic techniques ?? I'd tell them they could just ask for their money back! Awesome video Dale, and lovely little bike. I'd ride that!
Well, there is always that! Think this one deserves to stay put where it was meant to be. I do have an RD125 engine that needs a home, it has been my dream to build a land speed bike to put it in. Bonneville is a dream of mine.
It was the points or the condenser you replaced ,the points were off from side to side,not set right from cylinder to cylinder,,it sounds good,,I thought you done all that already !!
Hey Mike, it is one of my go to places for parts. They have a lot of stuff no one else has, it helps that my wife is from St Louis, she always brings me back cool swag, her family lives pretty close to Donelson Cycles. Walking in that place is a step back in time for sure. Love his old machines and museum.
@@montana2strokeracer Ha that's totally awesome Dale. When I saw you wearing it I was like did Donelson open a shop in Montana lol. Stay cool brother. Still 97 here today.
"... working from easy to harder ...", well, I don't know if you thought about cutting off about 1cm on the plug side of the ignition cable, they often corrode at the end, cutting it off guarantees perfect contact again ...
"... installed new 7mm steel braded cable ...", well, @@montana2strokeracer,you're probably right, it's one of my habits to keep using the old stuff until nothing works anymore... My suggestion was actually just intended to quickly and easily rule out a possible source of error when trying things out...
Not that I am aware of, I will be going through that in the next video. But the pump output is only adjusted at the cable pulley no matter if it's a single or a twin engine. As far as I know, not an engineer or professional by any means.
When looking at another video of a popular you tuber your work is on a different planet, perhaps if you were to use a claw hammer on everything and leave you work filthy dirty you might get more followers. I have worked in race paddocks hear in the UK and across europe and would work alongside you with no problem, trolls have nothing better to do than try and get a response just ignore them, at least they are watching. One little suggestion, when checking the plug for a spark, use a jump lead, fasten one end to a good ground and the other end to the ground on the plug this way you will always get a good contact.
Thanks, Rob, good tip on the jumper lead. I have done that before but should get in the habit. You are right about the trolls for sure, most of them never do any of this stuff, but they know it all. How can that be? Everyone has their own way of doing things and even their own clutter, I get pretty cluttered from time to time, it just takes a while before I realize I don't like it. Then clean it up. Thanks for spending time in the shop with me, I appreciate it.
Spark, Fuei, Air.... in that order. Before I watch this Video, I'm guessing bad spark on the bad side. When in first Video, I thought I saw not very good consistency of spark on bad side. 😃
Hey Mike, yeah that works, when I reviewed the video, I thought I saw the spark getting weaker or sporadic on the LH side or the good running side. Consistent on the bad side. But there again it may have been not making good contact on the head. Whatever the case it is running mighty strong now. On to the oil pump.
If the timing is 'fixed' i.e there is no retard mechanism built into the system then you you could adjust the timing point more to suit how you intend the ride the bike. 2 strokes are a little 'odd' with regards to their timing requirements, the timing at low RPM needs to be way more advanced than it does at high RPM, it mainly to do with the volumetric efficiency of the engine. So if the timing is fixed then it must be set to suit high RPM running which means it is really too retarded for low RPM running. If you intend to just cruise around at low RPM the you can advance the timing to gain a little more 'grunt' at low RPM BUT you can not then go thrashing the engine to the red line if you have set the timing up this way, if you do you will pay the price!
You are absolutely right my friend, yes, the timing is fixed at full advance on these bikes. You just have to be careful and do your plug readings when you advance, but in my experience, up to about 2.0mm is pretty doable on most of these bikes.
You know brother you will have hater’s no matter what you do. You do an awesome job. I have learned so much from you. Keep going.
Your right my friend, haters are everywhere......can't get to heaven by being one. Turn the other cheek works for me.
... old school downshifting with double-declutching on a two-stroke engine, ... a pleasure to listening !
Well done Sir !
👍👍
Watching & learning from Dale never gets old!!
Thank you!
Great diagnostics and solutions to the issues at hand. Regarding the tongue depressors, whatever works for you seems to be the right way to resolve the issue at hand. Don't pay any attention to the naysayers as there are many ways to to resolve the same problem. Please keep these videos coming as I learn something from each and every one of them!
Thanks Pete, I sure appreciate you taking the time to watch.
Another great tutorial in diagnostic methodology and practice. Clever ways on adjusting the timing. Don't get to see.a timing light in use very often. Or tongue depressors used in such a creative way. Well done.
Thanks Jim, many ways to skin the cat. Some folks just get stuck doing it the same way.
I just bought a dial indicator on Ebay to set the timing on my Yammie. Thanks for all the lessons you give Dale !
Cheers, Ard
Thank you, glad to able to help.
Do it your way like I do,at 16/17yrs old my Bus from work as apprentice Commercial Deisel Fitter dropped me at Andrews Motorcycles in Belfast I used to drool over the Bikes in showroom .Later somehow I acquired a street race version As1, road it legally .Had it scrutineered for 1st race meet.During the race gearbox selection tumbler suited its self changing up &down.Finishing Last and too costly to continue pursuit of Racing.Love your approach to diagnostics👍
Awesome Dave, great story. Thanks.
Turns out close enough is only good for horseshoes... It took making sure all the parameters were adjusted spot on to make this twin run correctly. Well done, Dale.
Thanks Doug yes there were more than one problem here. Don't think any one solution would have fixed it.
You can't beat an angry two stroke twin Dale. You've made a real difference to this one. I agree that slightly sharper timing might help.
Don't listen to the naysayers Dale, your methods are sound and your results speak for themselves.
Best wishes, Dean.
Thanks Dean, yes, these Yamaha twins are the coolest, nothing sounds like them. Yeah, think I will see how a little more timing works. Thanks, buddy, for the shout out on your channel, I don't think about that like I should, I will try to remember to do the same.
hot, here ,but cool watching Dales show!
Cool her today, Frank, 70 for the high, rain tonight. Thank God!
@@montana2strokeracer if i was younger i would move next door to you, these 118 degree days in Vegas aren't as easy to tolerate as they were.
I hear you Frank, I don't know how you do it. You can always put more clothes on, but there is a limit to how much you can take off and stay out of jail. There is a house for sale just down the street, where I turn around. LOL
@@montana2strokeracer we hide out in the house only go out early or late if we have to. we have about 8 months with nice weather, but i think i like the freezing 40s and 60`s here better.
Had one just like yours back in the day. They run exceptionally well and are very impressive for a 125cc, but when the needles are opened past 3/4 throttle, it's like a rocket!
Hey Bart, I remember these from my youth also. When I found this one 10+ years ago, I though finally I found one. But life got in the way and just didn't have time to mess with it till now. I think one of the best investments has been the motorcycle lift, it is so easy to work on these now, I remember working on them on the floor with my head bent down. That is probably why I didn't get it figured out back then. I am looking forward to the first real ride, I felt it ran very good, but I have not got close to full throttle yet. Wow............I'm looking forward to the rocket effect. Thanks Bart.
Thanks for the video! It's my favorite bike of all time! It was the first true 5 port motor!
Your welcome William, it is an amazing machine from the day.
That little bugger sounds amazing !
You will not get an argument from me.
Nice little Yama hopper !
Great job Dale, another sound bite from the 60's for us old guys. Those little Yamaha twins have an amazingly throaty growl to them, sounding even better to me back then than my R5 350. Maybe it was due to reduced mechanical noise due to the smaller size.
And those chrome air cleaner silos are wicked!
Right on Wayne, nothing like the sound of the Yamaha twins, only thing that makes it better is some bean oil in the tank. I really like the air cleaners also, the HS1 90 twin has them too. Be getting back to that one soon.
Another great video Dale. Many thanks to you for sharing your knowledge!
Thanks, Rob, sure appreciate you taking the time to stop by.
Nice bit of troubleshooting there Dale! Sounds great!
Thanks David, we are on the right track.
Late to the party today.
Nicely sorted Dale. Excellent video. Crazy weather you're having! Be glad when it warms up here🤣
Cheers, Peter.
Never late Peter, this is not school, just glad to have you stop by.
Excellent video and excellent work my dear friend and brother does.
With all due respect if I may suggest to add about 3 to 4 ounces of Chevron Techron fuel cleaner to a full tank of gas may help. For bless you daily.
Thank you, sir, and thanks for the suggestion.
Thanks Dale , she sounds pretty good now but boy is she noisy , cant tell if thats piston slap or what . I think the tongue depressors are Genius ! And this way if anyone gets a sore throat you can check for irritation on the old Tonsils . Thanks Dale , You know I saw that 380 on the shelf .
Thank Murray, I really think she is pretty tight, there is a lot of things rattling on this bike, the non-spring-loaded foot pegs front and rear, and the seat front bracket, think I showed that seat bracket in the video. Lot of noise makers. I'm going to try to tighten it all up, I get tired of hearing stuff like that. Ha, ha, ha, tongue depressors/sore throat. Yeah that 380 is still here.
You do good my friend.i myself have 45 plus years and trial and error has always worked for me.that ols twin sure sounds sweet😊
Thanks James, I have done a lot of trial and error also, it doesn't matter your process, it's the outcome. You are right my friend.......nothing sounds like a Yamaha twin.
getting ready to time the rd350 I am rebuilding (and wiring on the bike) Nice refresh for me been 30 years since I did one LOL. On the carb sync I always used my fingers lol. One jammed in each carb. get it close then use a flow gauge.
I would like to find a RD250 or 350, nice bikes and quick. They also have that unique Yamaha twin sound, just like this one, but a bit throatier. The space behind the carbs is so limited here, you just can see in there. You can certainly feel if both slides are starting up, but a nice visual is helpful. Let me know how your project goes. Always interested in other folk's projects.
@@montana2strokeracer the stick thing is a neat Idea, I can see the usefulness of it. my project is a parts bin build, started with a titled frame and I have been finding parts lots to build it. I am replicating an R5B I had 35 years ago. your twin crank rebuild was handy to watch before I did mine, (I had commented on that vid) knocked it out in a morning with great results. working on throttle cable and electrical now, then test run and then pull it apart for paint. I need to video some of it and put it on my channel. Love your work the guys I used to ride with are gone or busy with life, (I am retired now) Nice to see how someone else approaches rebuilds.
That is one beautiful machine Dale learned a lot in this one keep up the amazing videos
Thank you, David, I sure appreciate you hanging out in the shop with me.
As versatile as you are and as a complete mechanic and machinist as you are , I'd say it's irrelevant what some armchair wanna be mechanics think. It's very obvious what you do works for you. Thoroughly enjoy what you do
Hey RC, thank you for the kind words, I guess it just comes with the territory, we are all different. I won't argue with anyone, and I don't profess to be right all the time. I just enjoy what I do and have found there are others out there that enjoy the same stuff. The haters are few and far between, everyone else is just fantastic, and offer a lot to the channel. I appreciate each and everyone. Thank you for supporting the channel, I sure appreciate it.
Great video again Dale. Thanks for making these.
Thanks Dave, it really is a lot of fun, can't believe how many folks like these old bikes.
hate 2 tell this but i told ya so, one side was perfect in time and the other was fireing a little 2 late, you got er dude, she's buzzing like a saw, there ain't nothing dale sweger cain't fix, don't you just love it when a plan comes together, another one 4 the record books, glad i went along 4 the ride on both these vid's, catch u on the next one...
Right on brother, it's fun figuring out the solution.
great job dale sounds pretty sweet now hopefully uve sorted it out 4 get the haters u do a fantastic job next video please
Thanks, buddy, sure appreciate you hanging out in the shop with me.
You do excellent work, Dale! Ignore the armchair experts.
Thanks Kyle, I do for the most part, I read all the comments, there is value in them all. Sometimes they are just more confrontational than they need to be. Thanks buddy.
Nice work Dale!
Thanks again Darren
Got to finish this tomorrow.
Thanks buddy
The purple eye shadow really does something for me. Ha ha
My 73 GT250 did the same thing low exhaust pressure on the right side and no power. I cleaned the carburetor and points and set the timing. Everything at once and fixed it. So I don’t know what was the main problem but it runs good now.
Yeah, that's what happened here, I think it had a lot of small problems, it took fixing them all to get the bike to run correctly. Thank you!
BWAhahaha! Some folks whining at YOU, for YOUR excellent diagnostic techniques ?? I'd tell them they could just ask for their money back! Awesome video Dale, and lovely little bike. I'd ride that!
Right on brother, I just let it go in one ear and out the other. It's really not that bad, most folks are here just to have a good time.
Great job brother.
Thank you, buddy, waiting on a progress report on the Honda, any revelations?
Appreciate another great video
Thanks Wally!
Take the engine, do a bit of port work, a set of chambers and then shoehorn it into. YSR80 chassis.
It sounds great!!!
Well, there is always that! Think this one deserves to stay put where it was meant to be. I do have an RD125 engine that needs a home, it has been my dream to build a land speed bike to put it in. Bonneville is a dream of mine.
@@montana2strokeracer now that would be awesome.
It was the points or the condenser you replaced ,the points were off from side to side,not set right from cylinder to cylinder,,it sounds good,,I thought you done all that already !!
Here we were working on the 1953 ford custom line.
You guys are making some good progress on that old Ford. Painting yet, or just leaving it in the ruff?
@@montana2strokeracer in body work stage
Awesome that is the foundation of a great paint job.
Hey Dale, where the heck did you get that Donelson cycles t shirt? That's one of my go to places here in St. Louis, Mo.
Hey Mike, it is one of my go to places for parts. They have a lot of stuff no one else has, it helps that my wife is from St Louis, she always brings me back cool swag, her family lives pretty close to Donelson Cycles. Walking in that place is a step back in time for sure. Love his old machines and museum.
@@montana2strokeracer Ha that's totally awesome Dale. When I saw you wearing it I was like did Donelson open a shop in Montana lol. Stay cool brother. Still 97 here today.
"... working from easy to harder ...", well, I don't know if you thought about cutting off about 1cm on the plug side of the ignition cable, they often corrode at the end, cutting it off guarantees perfect contact again ...
I did one better, installed new 7mm steel braded cable and new non resistor plug caps. Running much better now, but did many adjustments.
"... installed new 7mm steel braded cable ...", well, @@montana2strokeracer,you're probably right, it's one of my habits to keep using the old stuff until nothing works anymore...
My suggestion was actually just intended to quickly and easily rule out a possible source of error when trying things out...
Infrared thermometers give inaccurate readings on shiny metal surfaces, Dale.
I would tend to agree, but I think it gives you a basic idea of what is going on. It certainly showed the cylinder was cold (not firing properly)
@@montana2strokeraceryeah, in this instance it was the temperature differential that was the clue to a problem, rather than an accurate measurement.
is there a way to adjust the oil injection for each cylinder separately?
Not that I am aware of, I will be going through that in the next video. But the pump output is only adjusted at the cable pulley no matter if it's a single or a twin engine. As far as I know, not an engineer or professional by any means.
When looking at another video of a popular you tuber your work is on a different planet, perhaps if you were to use a claw hammer on everything and leave you work filthy dirty you might get more followers. I have worked in race paddocks hear in the UK and across europe and would work alongside you with no problem, trolls have nothing better to do than try and get a response just ignore them, at least they are watching. One little suggestion, when checking the plug for a spark, use a jump lead, fasten one end to a good ground and the other end to the ground on the plug this way you will always get a good contact.
Thanks, Rob, good tip on the jumper lead. I have done that before but should get in the habit. You are right about the trolls for sure, most of them never do any of this stuff, but they know it all. How can that be? Everyone has their own way of doing things and even their own clutter, I get pretty cluttered from time to time, it just takes a while before I realize I don't like it. Then clean it up. Thanks for spending time in the shop with me, I appreciate it.
Here!
Your first Dean......simply amazing all this info can reach the UK so quickly. Thanks buddy
@@montana2strokeracer it's amazing. Montana in my front room in Oxfordshire. Time to sleep, I'll catch you in the morning my friend.
Think changing the older condenser was the culprit
It sure was part of the issue, along with timing, syncing the carbs.
is there a advance mark on the flywheel?
No flywheel on this one Frank, these bikes are at full advance all the time.
Spark, Fuei, Air.... in that order. Before I watch this Video, I'm guessing bad spark on the bad side. When in first Video, I thought I saw not very good consistency of spark on bad side. 😃
Hey Mike, yeah that works, when I reviewed the video, I thought I saw the spark getting weaker or sporadic on the LH side or the good running side. Consistent on the bad side. But there again it may have been not making good contact on the head. Whatever the case it is running mighty strong now. On to the oil pump.
@@montana2strokeracer running killer i say✌😎 Love the videos and your dang cool!! 👨🔧
If the timing is 'fixed' i.e there is no retard mechanism built into the system then you you could adjust the timing point more to suit how you intend the ride the bike. 2 strokes are a little 'odd' with regards to their timing requirements, the timing at low RPM needs to be way more advanced than it does at high RPM, it mainly to do with the volumetric efficiency of the engine. So if the timing is fixed then it must be set to suit high RPM running which means it is really too retarded for low RPM running. If you intend to just cruise around at low RPM the you can advance the timing to gain a little more 'grunt' at low RPM BUT you can not then go thrashing the engine to the red line if you have set the timing up this way, if you do you will pay the price!
You are absolutely right my friend, yes, the timing is fixed at full advance on these bikes. You just have to be careful and do your plug readings when you advance, but in my experience, up to about 2.0mm is pretty doable on most of these bikes.