Dale, great to spend time with you in the shop. I'm currently doing exactly the same thing with Bantam Cranks, as they never had a thrust washer from new and wear severely. I have been working on a fixture to do them in the lathe. I'll share by email. Koyo bearings are very good, I've used them extensively over the years. Best wishes, Dean.
What is it they say about great minds? LOL, I tried to do this in the lathe, if I got it offset enough, I had no room for the stub to go into the chuck throat. I will be interested to see what you come up with. Thanks, brother.
Hey Don, thanks, I am finding this project to be a lot of fun and a learning endeavor for me also since this is the first 80 I have been into this far.
Thanks Peter has been a learning experience for me, since this is the first GT80 I have opened up. I am finding the crank mods to be interesting and looks like they will be successful also. Looking forward to getting going on it next week.
Thanks Murray, that's great, hope you guys are getting all sorted out. Must be a lot of viewers in that storm area. My views have been way down. Glad to hear things are getting back to normal if that is even possible.
Yes Dale you will see me on the next video, I really enjoyed watching this and the way you explain everything. I'm so pleased for you that you manage to find another crankcase. you take great care on the work you do on these small bikes. and your customer will be over the moon with what you have done for him. not that I need to but I would be more than happy for you to work on any bike of mine. see you soon my old friend.
Thank you for the kind words, Brian, I have never messed with these 80's before, but they are really just small AT'1's. Most is very similar. Having fun sorting out the crank mods, hope to get on that first part of the week. Stay tuned my friend.
HI Dale, I also think that it is important to use silicone on the oil seals, it usually makes them easier to install and filles the poor surface finish. Rich
Hi Dale, I noticed there's additional webbing/strengthening around the chankshaft bearing area so that might be an extra thing to look for cracks ? Or it might be so there's less flex in that area to make the bearing last longer or even less flex in the crankshaft ? Regards, Ard
Hey Marcel, this certainly is not the way for the faint of heart. When experimenting and found the induction hardened hole on the Suzuki crank, I thought it was all over. But it looks like these are not hardened so I think it will be very easy to do and straight forward assembly also, hoping to jump on this project first part of the week.
Hey Bob, it was a 1st over and yes it on my bench as I am typing this. My camera is charging and as soon as I get all these comments and emails replied to, I will get out and finish up the HS1 engine. I hope to get it back in the frame also, but probably won't be till the following video where I will top off fluids, do adjustments and try a startup. But we are getting close. Lots of folks have been waiting to see Yamaha's smallest twin run again. Watch for the next video tonight or tomorrow. Thanks for hanging out in the shop with me.
Thank you, Tim, I am learning here too, this is the first 80 I have been into this far. I am finding it interesting and challenging at the same time. Thanks for hanging out with me in the shop.
I am confused as to why that mainshaft bearing had a shield and the o.e.m. replacement has a seal on it. It is exposed to gearbox oil on both sides. What is the purpose of the seal?
Yeah, me too, not sure what Yamaha is up to on this one. Like I said I normally get my bearings from a local bearing house, I just pick up a "Z" bearing, that is shielded on one side. That is what Yamaha used on the AT and CT series for ever. But these came from Yamaha, and this is how they came to me. I did notice that Garage to Trail RUclips channel had the same issue on his CT3 build last week. His came with a seal on both sides and he removed the one on the transmission side like he should. Now for what is the reason, your guess is a good as mine. I think it has something to do with the clutch spinning and possibly sucking too much oil over to the side case and running the transmission short of oil. Just a guess, would love to hear others' opinions also.
Dale, great to spend time with you in the shop. I'm currently doing exactly the same thing with Bantam Cranks, as they never had a thrust washer from new and wear severely. I have been working on a fixture to do them in the lathe. I'll share by email. Koyo bearings are very good, I've used them extensively over the years.
Best wishes, Dean.
What is it they say about great minds? LOL, I tried to do this in the lathe, if I got it offset enough, I had no room for the stub to go into the chuck throat. I will be interested to see what you come up with. Thanks, brother.
Lots of planning and forethought. I can appreciate the amount of care you put into your work.
Thanks Doug, these bikes are a source of real enjoyment whether riding or working on them.
Great work Dale, the gear shafts spin so nice now.
Can’t wait to see the finished product.
Hey Don, thanks, I am finding this project to be a lot of fun and a learning endeavor for me also since this is the first 80 I have been into this far.
Good job Dale. Thanks for sharing. See you on the next one. Nice shirt at the beginning.
Thanks Cain, love this shirt
Great video, Dale. Meticulous work as usual. Looking forward to seeing progress.
Cheers, Peter.
Thanks Peter has been a learning experience for me, since this is the first GT80 I have opened up. I am finding the crank mods to be interesting and looks like they will be successful also. Looking forward to getting going on it next week.
Such a pleasure to watch your meticulous work. Double and treble checking. Would that dealers took such measures. Thanks for uploading
Thank you brother
Dale, you are Amazing! Excellent research on that case! Always look forward to your videos! Thank you for your time!
Thanks EJ, it looks to be a straightforward build after I get the crank assembled. Stay tuned.
Great video Dale , just got internet today . Thanks Dale .
Thanks Murray, that's great, hope you guys are getting all sorted out. Must be a lot of viewers in that storm area. My views have been way down. Glad to hear things are getting back to normal if that is even possible.
great work as always dale new case is beefed up nicely keep up the great work next video please
I think it will correct the problem, looks good for sure, thanks Mark.
Yes Dale you will see me on the next video, I really enjoyed watching this and the way you explain everything. I'm so pleased for you that you manage to find another crankcase. you take great care on the work you do on these small bikes. and your customer will be over the moon with what you have done for him. not that I need to but I would be more than happy for you to work on any bike of mine. see you soon my old friend.
Thank you for the kind words, Brian, I have never messed with these 80's before, but they are really just small AT'1's. Most is very similar. Having fun sorting out the crank mods, hope to get on that first part of the week. Stay tuned my friend.
HI Dale, I also think that it is important to use silicone on the oil seals, it usually makes them easier to install and filles the poor surface finish.
Rich
Thank you brother
Always learn from you!
Thanks man, and I learn something new every day from all the good folks out there.
Here!
Hi Dale, I noticed there's additional webbing/strengthening around the chankshaft bearing area so that might be an extra thing to look for cracks ?
Or it might be so there's less flex in that area to make the bearing last longer or even less flex in the crankshaft ?
Regards, Ard
Yes, I looked, didn't see any other problems. Think they must have gotten it fixed.
Im on pins and needles to see how this crankshaft comes out.I think this is the way I should go with my gt.
Hey Marcel, this certainly is not the way for the faint of heart. When experimenting and found the induction hardened hole on the Suzuki crank, I thought it was all over. But it looks like these are not hardened so I think it will be very easy to do and straight forward assembly also, hoping to jump on this project first part of the week.
Hello Dale: We were just wondering if you have gotten another 3rd over piston for the HS1??????? Best, BP********
Hey Bob, it was a 1st over and yes it on my bench as I am typing this. My camera is charging and as soon as I get all these comments and emails replied to, I will get out and finish up the HS1 engine. I hope to get it back in the frame also, but probably won't be till the following video where I will top off fluids, do adjustments and try a startup. But we are getting close. Lots of folks have been waiting to see Yamaha's smallest twin run again. Watch for the next video tonight or tomorrow. Thanks for hanging out in the shop with me.
What did you put on the seals when you installed them?
It's the Permatex super black rtv.
you are a wealth of information, I am attempting to rebuild my 1975 YZ 80 B are you available for advice.
Thank you, Tim, I am learning here too, this is the first 80 I have been into this far. I am finding it interesting and challenging at the same time. Thanks for hanging out with me in the shop.
@@montana2strokeracer What is the black stuff you are putting on the seals? I am at that stage now.
Permatex super black rtv
Here
hi, Dale
I am confused as to why that mainshaft bearing had a shield and the o.e.m. replacement has a seal on it. It is exposed to gearbox oil on both sides. What is the purpose of the seal?
Yeah, me too, not sure what Yamaha is up to on this one. Like I said I normally get my bearings from a local bearing house, I just pick up a "Z" bearing, that is shielded on one side. That is what Yamaha used on the AT and CT series for ever. But these came from Yamaha, and this is how they came to me. I did notice that Garage to Trail RUclips channel had the same issue on his CT3 build last week. His came with a seal on both sides and he removed the one on the transmission side like he should. Now for what is the reason, your guess is a good as mine. I think it has something to do with the clutch spinning and possibly sucking too much oil over to the side case and running the transmission short of oil. Just a guess, would love to hear others' opinions also.