I would like to have a Yamaha twin lying around just to start up and listen to those sweet sounds. Always loved them. I built several 50cc twins out of two 25cc weedwhacker motors. Fitted them with my custom CDI ignitions and put them on model airplanes. Outstanding performance. Super smooth, powerful, and great sound. I ported the cylinders. They run close to 10,000 rpms. Can't wait to see this project continue, and of course, the custom AT1-MX
Fun video!! Making the engine jig was a lesson unto itself. Really looking forward to seeing this mounted and racing! What an amazing sound to the motor. Great lessons on electrical. Thanks.
Thank you very much. I have always steered clear of those type tours; it seems like a bragging thing to me. I don't want to come across like that. But will keep it in mind. I am not familiar with the mule workshop, what is his channel called. Thanks again.
@@montana2strokeracer I own an RZ350 and a RD350. Restored and maintain both along with other bikes that come and go. I am always trying to learn more, and looking for new ways to do things. Your channel has a lot to offer. I am always happy to know there are other folks out there who are doing their best to keep two strokes alive. Keep up the good work and good sharing.
Thank you, I am too, just got to button up some of the other projects. Never built a frame before, so this is learning for me. So, on the ride we will go.
Early 70's RD 200 in metallic purple and white is probably the prettiest bike ever made! That style of engine cover, black with the two polished stripes is classic. If those carbs are new from SUDCO they probably have primary choke needle jets instead of proper emulsion tubes. Yamaha swapped to 'four stroke' type carb internalswhen they went to reed valve motors instead of piston port. The brass shroud sticks up about 8mm (5/16") into carb bore on primary choke
Not sure on the carbs, haven't had a lot of time to look at them, yes, they are new. This engine didn't have any when I got it. This carb was listed as a 2-stroke carb, I remember that from when I ordered them.
@@montana2strokeracer It will run a lot better if you set them up to factory spec for the 75/76 model. It's a PITA spending bunch of cash on new emulsion tubes and needles on brand new carbs. You may need slides as well, I don't remember what I fitted but I know I had to change them and have a pair of 2.5 'staring' at me on shelf in front of laptop
Ive got a bunch of engines I need to bench test. Trying to figure out how to wrench on these bikes in the best way. Thanks for sharing your process. I like how you jump around with the projects and don’t get too focused or stuck on anything. Gonna start posting more so I can get some feedback to help me with the projects that have hiccups. This is smart.
Hi, thank you for the kind words, I try to move around, hoping to attract a more diverse crowd. I know that not everyone is working on a Yamaha, but those are what I find the most of here. I seem to have more followers that are working on Suzuki's. I like to throw some motorcycle machining and fabrication in to get some machine shop folks too. I really love the machine shop side of motorcycle repair and modification. Lots of helpful folks out there that I talk with every day. (Usually by comment or email) I went over and looked at your channel and subscribed. You have a lot going on and I'm just sure you can really get going if you continue to put the content out. I have found by asking for help, you will get it. Most guys don't really care what you're working on, just that you're doing something interesting and somewhere down their alley. Keep up the good work
@@montana2strokeracer I’m working producing content for my winter projects: Suzuki tc/ts90. 3 different versions of Honda mini trails, a Chrysler sno runner and some other Frankenstein creations . There’s lots of gear wrenching channels on TH-cam that have some helpful diagnostic content, most of it is the same problems: but the machine shop /Resto work is really special . Some of the rare /older bikes/vehicles you can’t just throw money or parts at. It takes skill, patience and determination to finish them off. I’m here to learn and pick up skills. Figure out a niche I can afford to fit in with the tools and space I have .
You really helped me out with this video because im making a wiring harness for one i just picked up im putting it in my full suspension honda atc185 I'm building can't wait to watch the rest of your build
Hey thanks Steve, wow sounds like you have a super project, that engine in the atv will really rip. Glad to hear the video help you out. Thats my hope that folks can get at least some good from them. Thanks for hanging out in the shop with me.
The RD was running sweetly Dale, you could put that in a bike and run it. Great throttle response. Looking forward to the future project. Best wishes, Dean.
Nice video Dale! The Yamaha twin cylinder 2 cycles are awesome... very unique sound that's amazing. I believe the Yamaha Banshee twin 350 (sport quad) from 1987-2006 is built off of a very similar design as the RD engine models and have a cult like following. There is tons of aftermarket parts for the Banshee engines and it is not uncommon for them to have 50-100hp depending on how they were built. 👍
Thanks Taylor, Yes am familiar with the banshee, it is pretty much the rd350, I almost had a RD350 couple weeks ago but got beat to the punch. Bummer! Still looking.
Dale when you get that RD made into a flat tracker i want to see you find a track and power slide a couple of hot laps! just like the old days you can do it!!!
Thanks Mark, yes it will need some tuning, I didn't set the points, I'm sure it needs condensers, and of course it will probably need seals. But it runs, I am happy about that. Thanks for hanging out with me in the shop.
Ooo nice! I didn't know you had a 250 cool! Im assuming you have the rest somewhere? I guess Ill find out soon enough, keep doing what you do Dale! Edit* your jumper wire and electrical work is clean very good and correct tools for best quality imo
Thank you for the kind words. I dont have the rest of the bike, only the engine. Thats why I will be building a flat track frame soon to use the engine. Should be a fun project. Thanks for hanging out in the shop.
Hi thank you for your interest and for following the channel, this frame build will be new to me, never done it so I will be learning as I go. I also have a flat tracker MX360, I can never remember who the frame builder is (too much water under the bridge so to speak) take a look at this video of mine, maybe you can tell me the maker. It is either Trackmaster or Champion I think. It has a number on the steering head, think it says 360-. Thanks again. th-cam.com/video/HP7jldDK7Zk/w-d-xo.html
Hi Dale. What if anything did you do to the 28mm Mikunis? Did you have to rejet them or did you use it just like they came? Great video. Love your page. You’ve got mad skillz🏁
Hi there, no I didn't do a darn thing to them. But that being said, I don't know how they would run down the road, I am just positive they would need some jetting and adjustments. Thanks for hanging out in the shop with me.
@@montana2strokeracer ok thanks, no problem, it’s fun to hang out in the shop lol, I’ll have to go through my stuff for looking for engine and frame serial numbers starting with 352 , I’d like to put together a 250 to go with my 350 and 400
Even though i though it was a rd 350 instead a 250.. I bet a bore job would take it to a 350,,looks to be the same bottom but perhaps the carbs are a bit smaller mm on the 250
I heard your response on those yellow lines. I believe I perhaps got took and ordered some on ebay that was counterfeited,,mind turn to junk in a year. Unbelievable
Yes, it is really easy to do using the reed switches, just making the new backing plate is the hard part, but it's fun to make, so what can be hard about that?
I am 52 years old and that is the first time I have ever seen a motorcycle engine running that is not in a motorcycle! Great film.
Well Carl, you saw it here first.
@@montana2strokeracer Indeed I did.
when you fired that winded yamaha 350 up it reminded me of a artic cat 400 free air kawasaki motor i table up to start. Great job dale
I would like to have a Yamaha twin lying around just to start up and listen to those sweet sounds. Always loved them.
I built several 50cc twins out of two 25cc weedwhacker motors. Fitted them with my custom CDI ignitions and put them on model airplanes. Outstanding performance. Super smooth, powerful, and great sound. I ported the cylinders. They run close to 10,000 rpms.
Can't wait to see this project continue, and of course, the custom AT1-MX
Yep, Yamaha twins always been a fav of mine. They sound great and the bean oil smells great too. Pressing forward on several projects.
Fun video!! Making the engine jig was a lesson unto itself. Really looking forward to seeing this mounted and racing! What an amazing sound to the motor. Great lessons on electrical. Thanks.
Thanks Jim, this will be a fun project, and some new skills to learn on the ride.
Luve to see a offical garage tour and a tool box tour. Your shop is very like the mule workshop. Great job.
Thank you very much. I have always steered clear of those type tours; it seems like a bragging thing to me. I don't want to come across like that. But will keep it in mind. I am not familiar with the mule workshop, what is his channel called. Thanks again.
Great job on the RD engine. Thanks for showing your "static test bench." Educational. 😊
Thank you, glad you enjoyed it.
@@montana2strokeracer I own an RZ350 and a RD350. Restored and maintain both along with other bikes that come and go. I am always trying to learn more, and looking for new ways to do things. Your channel has a lot to offer. I am always happy to know there are other folks out there who are doing their best to keep two strokes alive. Keep up the good work and good sharing.
I love this amazing 2 stroke sound of the RD ....
Nothing like the Yamaha two stroke twins, thanks for watching
Hey Dale, can't wait, I'm ready to go along for the ride.
Thank you, I am too, just got to button up some of the other projects. Never built a frame before, so this is learning for me. So, on the ride we will go.
Early 70's RD 200 in metallic purple and white is probably the prettiest bike ever made! That style of engine cover, black with the two polished stripes is classic.
If those carbs are new from SUDCO they probably have primary choke needle jets instead of proper emulsion tubes. Yamaha swapped to 'four stroke' type carb internalswhen they went to reed valve motors instead of piston port. The brass shroud sticks up about 8mm (5/16") into carb bore on primary choke
Not sure on the carbs, haven't had a lot of time to look at them, yes, they are new. This engine didn't have any when I got it. This carb was listed as a 2-stroke carb, I remember that from when I ordered them.
@@montana2strokeracer It will run a lot better if you set them up to factory spec for the 75/76 model. It's a PITA spending bunch of cash on new emulsion tubes and needles on brand new carbs. You may need slides as well, I don't remember what I fitted but I know I had to change them and have a pair of 2.5 'staring' at me on shelf in front of laptop
Ive got a bunch of engines I need to bench test. Trying to figure out how to wrench on these bikes in the best way. Thanks for sharing your process. I like how you jump around with the projects and don’t get too focused or stuck on anything. Gonna start posting more so I can get some feedback to help me with the projects that have hiccups. This is smart.
Hi, thank you for the kind words, I try to move around, hoping to attract a more diverse crowd. I know that not everyone is working on a Yamaha, but those are what I find the most of here. I seem to have more followers that are working on Suzuki's. I like to throw some motorcycle machining and fabrication in to get some machine shop folks too. I really love the machine shop side of motorcycle repair and modification. Lots of helpful folks out there that I talk with every day. (Usually by comment or email) I went over and looked at your channel and subscribed. You have a lot going on and I'm just sure you can really get going if you continue to put the content out. I have found by asking for help, you will get it. Most guys don't really care what you're working on, just that you're doing something interesting and somewhere down their alley. Keep up the good work
@@montana2strokeracer I’m working producing content for my winter projects: Suzuki tc/ts90. 3 different versions of Honda mini trails, a Chrysler sno runner and some other Frankenstein creations . There’s lots of gear wrenching channels on TH-cam that have some helpful diagnostic content, most of it is the same problems: but the machine shop /Resto work is really special . Some of the rare /older bikes/vehicles you can’t just throw money or parts at. It takes skill, patience and determination to finish them off. I’m here to learn and pick up skills. Figure out a niche I can afford to fit in with the tools and space I have .
You really helped me out with this video because im making a wiring harness for one i just picked up im putting it in my full suspension honda atc185 I'm building can't wait to watch the rest of your build
Hey thanks Steve, wow sounds like you have a super project, that engine in the atv will really rip. Glad to hear the video help you out. Thats my hope that folks can get at least some good from them. Thanks for hanging out in the shop with me.
Hi Dale, Really looking forward to your Flat Tracker Project, That's one ride you can count me on, Malc U.K.
Thanks, Malc, never done it before, but ready to learn some more skills, it will great having you along for the ride!
The RD was running sweetly Dale, you could put that in a bike and run it. Great throttle response.
Looking forward to the future project.
Best wishes, Dean.
I'm ready just have to button up some other projects. Ready to learn some frame building skills. Thanks Dean
Nice video Dale! The Yamaha twin cylinder 2 cycles are awesome... very unique sound that's amazing. I believe the Yamaha Banshee twin 350 (sport quad) from 1987-2006 is built off of a very similar design as the RD engine models and have a cult like following. There is tons of aftermarket parts for the Banshee engines and it is not uncommon for them to have 50-100hp depending on how they were built. 👍
If your unfamiliar with the Yamaha Banshee 350 (sport quad) give it a listen in this video! th-cam.com/video/uEyA2vKAT-I/w-d-xo.html
Thanks Taylor, Yes am familiar with the banshee, it is pretty much the rd350, I almost had a RD350 couple weeks ago but got beat to the punch. Bummer! Still looking.
@@montana2strokeracer Happy Thanksgiving!
She sounds awesome
Sweet sound for sure.
Dale when you get that RD made into a flat tracker i want to see you find a track and power slide a couple of hot laps! just like the old days you can do it!!!
Oh yeahhhhhhh
great video dale sounds sweet enuff bit off fine tuning be spot on get that atmx sorted u can fathom it out im sure
Thanks Mark, yes it will need some tuning, I didn't set the points, I'm sure it needs condensers, and of course it will probably need seals. But it runs, I am happy about that. Thanks for hanging out with me in the shop.
I'm here Frank, pass the popcorn.
early bird gets the popcorn!
with some tuned flat track expansion chambers the sound will be music.
yep will have to have open expansion chambers
Ooo nice! I didn't know you had a 250 cool! Im assuming you have the rest somewhere? I guess Ill find out soon enough, keep doing what you do Dale! Edit* your jumper wire and electrical work is clean very good and correct tools for best quality imo
Thank you for the kind words. I dont have the rest of the bike, only the engine. Thats why I will be building a flat track frame soon to use the engine. Should be a fun project. Thanks for hanging out in the shop.
I bet that was loud! I could smell the 2-stroke oil from LA. 😁
Man it was terrible loud, but the sound and the smell is sweet for sure.
Hey Dale, very interested in seeing build a frame, I’ve currently got an MX250 Champion!!
Hi thank you for your interest and for following the channel, this frame build will be new to me, never done it so I will be learning as I go. I also have a flat tracker MX360, I can never remember who the frame builder is (too much water under the bridge so to speak) take a look at this video of mine, maybe you can tell me the maker. It is either Trackmaster or Champion I think. It has a number on the steering head, think it says 360-. Thanks again.
th-cam.com/video/HP7jldDK7Zk/w-d-xo.html
Great motor. My personnel opinion they much better than the kawasaki 350 triple,the powerband was nice and hit hard
Hi Dale. What if anything did you do to the 28mm Mikunis? Did you have to rejet them or did you use it just like they came?
Great video. Love your page. You’ve got mad skillz🏁
Hi there, no I didn't do a darn thing to them. But that being said, I don't know how they would run down the road, I am just positive they would need some jetting and adjustments. Thanks for hanging out in the shop with me.
Motor sounded great, my rd350s start with 351 but what I could make out on this engine the numbers start 3?2 For the 250?
Hey Kevin, yes this 250 starts with 352-. Thanks for spending time with me in the shop!
@@montana2strokeracer ok thanks, no problem, it’s fun to hang out in the shop lol, I’ll have to go through my stuff for looking for engine and frame serial numbers starting with 352 , I’d like to put together a 250 to go with my 350 and 400
Awesome, more the merrier they say.
The arrow on the piston points forward or backwards?
Forward towards exhaust port.
Kopy
Yes that is a cool Yamaha RD 350 Peace out
You ever do any work on the side
Yes, but not in the summer
@@montana2strokeracer okay,thanks.got two of them I’m working on.your video was awesome.
Even though i though it was a rd 350 instead a 250.. I bet a bore job would take it to a 350,,looks to be the same bottom but perhaps the carbs are a bit smaller mm on the 250
I can't remember I think the stroke is different, and hence the crank is bigger in diameter. But a fun Idea anyway.
I heard your response on those yellow lines. I believe I perhaps got took and ordered some on ebay that was counterfeited,,mind turn to junk in a year. Unbelievable
Flat tracker would definitely be cool
I think so too, not sure when I will get started but soon I hope.
YDS7?
memoreees
Once you figure the points all out to pointles,Youll want to update them all
Yes, it is really easy to do using the reed switches, just making the new backing plate is the hard part, but it's fun to make, so what can be hard about that?
Sounds pretty wicked to me....
Me too, some open expansion chambers will really make it tuff.
Here I want some popcorn to LOL
sorry 40 minutes late we ate it all!
@@frankdillon6127 lOL thanks brother
Frank scoffed the lot, just left the crumbs.
didnt think anyone was showing up didnt want to waste expensive popcorn with real butter and Kosher salt.@@retromechanicalengineer
@@frankdillon6127 I understand Frank. I was unavoidably delayed. Next time I'll bring nachos.
empty seats everywhere!
Grab one Frank, sit down and enjoy......dont forget the popcorn.
@@montana2strokeracer hope that smoke is the good smelling type.
Keine Kühlung !!!!!!!!!!!
It is an air cooled engine. I didn't run it very long otherwise I would have put a fan in front of it. It was about 40 degrees F the day I ran this.
Were these not electric start too,, ffs,
Yes non electric start.