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TechTalk / Re: Rev limiter or TCI?
« Last post by SonnyT on Today at 09:44:40 PM »
Thanks for the response. It has done this only once. Rode it four times after and it ran fine. Removed yellow/black wire at TCI and it still runs fine (three rides). I do have a spare TCI so if it starts doing it again I'll replace it and see what happens.
Thanks
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General Board / Re: #7 joins the fleet
« Last post by fret not on Today at 05:11:38 PM »
WOW!  What a box of goodies!
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General Board / Re: #7 joins the fleet
« Last post by Prophet Of Doom on Today at 06:17:22 AM »
lololol Did they ship ALL THAT STUFF to you with the exhaust?
Sure did.  30kg.
Don't ask what the shipping cost from Europe.
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TechTalk / Re: Rear wheel collar
« Last post by Prophet Of Doom on Today at 06:14:07 AM »
The part Haynes is pointing at is a lot longer than the parts diagrams would have you believe.  Those diagrams are very confusing at times. 


Here it is:
Length: 70
ID: 17
OD: 24
mm of course.  Looks like it's made of unhardened mild steel. Seamless.
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TechTalk / Re: Rear wheel collar
« Last post by MikeScoot on Today at 01:23:03 AM »
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TechTalk / Re: Rear wheel collar
« Last post by fret not on September 27, 2020, 08:58:15 PM »
The part number you supplied shows up as "drive shaft" in the description on the fiche is used on many Yamaha models.  The Haines manual I have does not have part numbers listed, so  you must have gone to a website and looked up the part, and you would also have found it is available for about $10. us. 

A second check calls the part "collar".  At this point you might consider contacting a dealer for clarification as I find it a bit confusing.  Something to consider is that all these parts were designed and manufactured in Japan, and then translated into English. 
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General Board / Re: #7 joins the fleet
« Last post by MikeScoot on September 27, 2020, 04:12:03 AM »
lololol Did they ship ALL THAT STUFF to you with the exhaust?
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General Board / Re: #7 joins the fleet
« Last post by MikeScoot on September 27, 2020, 04:09:20 AM »
Yeah, they're mongrels! But that type of joint is supposed to be the ultimate for exhausts! Pretty sure it all depends on having asbestos-filled copper gaskets that will crush to smaller inner diameter and larger outer diameter as the clamp is tightened.
I've forgotten who it was (sorry) but one of our members suggested keeping upward pressure (via chocking or similar) on the "Y" piece as the mufflers are bolted on.
That worked well for me.

I think the whole idea is that th "Y" piece is considered part of the engine, and the engine and "Y" piece should be installed/removed together as a set. Attaching the Y is much easier with the mill out of the bike, but a LOT of caution must be used when installing to frame so the Y piece doesn't get knocked around. I knocked mine a bit but it still works well with no leaks. I used a high temp silicon around the gasket too.
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General Board / Re: #7 joins the fleet
« Last post by kevin g on September 26, 2020, 05:11:35 PM »
When I was getting my bike running I had a leak at the y-pipe from the copper rings not seating.  I gently tapped them down the y-pipe past the taper and they held from the interference fit.  I re-assembled the exhaust and have had not more leaks from them.
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General Board / Re: #7 joins the fleet
« Last post by Prophet Of Doom on September 26, 2020, 04:12:22 PM »
So it's goodbye to the old exhaust, and hello to a NOS Jama exhaust from Holland (Plus an additional 116 mostly NOS parts)

There must be a trick to getting the Y-Piece to stick in place, but damned if I know what it is.  Crazy system seems to defy all common sense.
What's the theory? That the not very soft copper o-rings flatten and squeeze on the y-piece so tightly it won't vibrate out?  Admittedly the Y-piece and rings are a bit lumpy from past corrosion  but that's bullshit.

Copper O-rings are annealed - everything is clean as I can get,  but I bolt it up tight as tight and they just pull out with a bit of encouragement. 

Last couple I've just welded the ring on the Y-piece and filled the joint with gasket goop.  This bike bike I was hoping to do 'properly'

Any hints and tips?
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