Yamaha HS1, 90cc twin crankshaft disassembly.
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- เผยแพร่เมื่อ 6 มิ.ย. 2024
- In this video I disassemble the HS1 Yamaha crankshaft and remove the labyrinth seal. This is the same procedure for the YL1 Yamaha twin jet 100, and the YAS1 and YAS1C 125cc Yamaha. The rods, bearings, thrust washers, and labyrinth seal are the same.
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Thanks Dale , any information on where to find vintage parts is always Great.
Thanks, buddy, I get a lot of tips from my viewers too. Much appreciated.
Another Great Video Dale. Enjoy seeing you using your shop-made tools. Seeing these early twins shows how advanced engineering in Japan was at the time. Remember watching the duels between the 250 Bultaco singles and 250 Japanese twines at Ascot and the smell of bean oil heavy in the air.
Thanks John, it's fun making the tools, and when they work.....its gravy! Yes, I think they were advanced for their time, bet they sold a ton of those YL1's, just because they were a twin. Nothing like the smell of bean oil, I mix it in my Lawn boy fuel so I can have the memories while I mow the grass. LOL
What a fascinating little bike and great tutorial on cranks, bearings, pins, where to look for wear and more. Learned a lot!
It sure is Jim, very cool.
Late to the party. Still fairly early Saturday morning here. Another excellent video Dale. If that rod had let go now THERE would be some carnage.
Cheers, Peter.
No problem, Peter, yes there could have been some real problems for sure.
Love your stuff thank you from Fairbanks Alaska I have a new friend he's the chief mechanic of a fun center here in Fairbanks Alaska
Hey Richard, sure appreciate the kind words my friend. Sorry about the audio on this one. Not sure what happened.
Well it looks like you have some spare parts and some scrape metal , cool video Dale .
Yes it could be used but will require hours of machine work.
Awesome information about the connecting rods! As you know I need some, super good news. Keep up the good work!
Thanks Ron, I will let you know what I think of the Namura rods when I get it.
Still catching up. Thanks
Merci 👌👍👍👍👍👍👍👍
That tool you made works great on splitting them. Hope you can find the other piston.
Yeah I will find another someday.
Not too bad considering the water had been at it Dale. You will get another run out of it I'm sure.
I'm busy remaking my crankshaft splitting tool as the crusty B175 crank refused to move and destroyed the tool!
Best wishes, Dean.
Wow broke your tool on that B175! Want to see what you come up with. Sounds like yours was worse than mine.... how can that be, must be that British salt air.
@@montana2strokeracer it was sitting with a full crankcase of water since 1977, so perhaps it's forgiven! Milling the new tool is proving to be hard work.
Oh boy, how are the cases? That water sure pits the aluminum.
@@montana2strokeracer I can't save the cases unfortunately. They are terrible. We have located a good used set.
Yes that had rust on it Peace out
Enjoyed seeing how these assemblies come apart. So when Barry Sheen was racing, was this the bearing he complained about in practice? The same one the mechanics refused to replace? Ended up failing in the race. Kenny Roberts won again that day. I imagine the race bikes were a similar design.
Hey Chris, not sure about the story, it has been years since I read anything about either of them. I'm sure the race bikes were a derivative of the street model with a lot of black magic thrown in for good measure. Oh, those were the times.
Here
hi, Dale frank in blazing hot las vegas.
Hey Frank, waking up to 63 degrees here in the big sky, supposed to be 80 today. Good day for a ride......you want to come along?
@@montana2strokeracer OH! yeah crank them up, i would like to ride your Yamaha 360 flat tracker first, than a old favorite the Pursang.
Dale do get brake parts from?
You mean like brake shoes, normally from Ebay.
hi Dale, is the critical weight on a rod on the large end while the piston end is supported?
Rich
Hey Rich, not real sure what your question is here. Think you are wondering if the rod weight is critical. No not really, most of the replacement rods weigh less than the OEM ones. I have never noticed any vibration or noise associated with using them. Maybe if it was ultra hi rpm use but have never noticed anything with the old motocross or flat track machines that I have done.
@@montana2strokeracer Hi Dale, sorry for not being clear. I've watched engine balancing, and to match the rods they weighed the large end while the smaller end was supported. I wondered if one of the new rods (even though the entire rod weighed less) weighed the same on the crank end.
Hey Rich, Oh I see, I know that's how it's done, messing around with cars for all these years, but I don't get that involved with it. If it's a replacement part, then I use it. Like I said I have never run into a situation where it was too out of wack and caused vibration or other issues. That is just more than I want to mess with, above my pay grade as they say. Maybe the next time I do one I will experiment and see what come from it.
Take a close up with your phone, then bow it up, you won't believe what you can see.
Yes I forget about my phone camera at times, I have been using it more for stills to include lately.
Just late lol
No worries Dale, some refreshments still left.