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Post by yknot057 on Jul 6, 2005 9:20:17 GMT -5
Guys,
I've just inherited a broken Cafe conversion (piston met the head trauma) which I am close to reassembling and I notice that the clutch boss (the six fingered back plate/hub that the clutch springs screw into) has one "finger" missing. I have not had this bike running but is it likely that it will still run with five clutch springs and effectively out of balance?? Has it likely been running like this?
I also got a heap of parts with this, and another bike so I thought I had a couple of spares, but they are both worse! One missing two fingers the other three..... is this a known prob?
Interested in your thoughts.
Regards, Steve C
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Post by G Man on Jul 6, 2005 10:28:51 GMT -5
My opinion is do not run this piece at all. Replace it with a known good one, be it new or used. No need to take the chance of either getting hurt or grenading the clutch. It's apart now, this is the time to do it right.
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Post by StewRoss on Jul 7, 2005 2:46:21 GMT -5
Hi,
Yes I agree. There are no big problems with the SR clutch basket as I recall, however, some people use levers in between the fingers to hold the basket when they 'try' to remove the centre nut.
This often has the results that you now see on yours.
If they've done this then there is a chance that they've also stressed others as well. Probably better to get rid of it I feel.
If you want to remove the basket, get hold of a proper Yamaha clutch holder. Cheap way to do things in the long run...not that I'd suggest you'd do the same of course.
You can get a couple of types, with the cheapest being a plate with a handle attached. The plate is like a thicker than normal steel clutch plate that holds the hub and the handle fits between the basket fingers. Never wear one of these things out...or damage another clutch basket...
SR
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Post by yknot057 on Jul 9, 2005 18:40:27 GMT -5
Gentlemen,
Both comments make good sense and it is interesting to find out why/how these things happen. It's also good good to know that there are slower learners in the world than yourself (hence inheriting three damaged boss's) ;D Exactly what the forum is all about.
Stew (?), you're in Aus ..... do these tools you describe come from Yamaha dealers or elsewhere?
Thanks.
Steve C
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Post by canucksr on Jul 9, 2005 19:53:49 GMT -5
Another way to remove the clutch basket nut is to jam a rag between the clutch gear and the primary drive gear. You can remove the drive gear nut this way too. If you have access to a half inch drive air-gun, that will remove them too. To make a clutch basket holder, weld two or three steel clutch plates together with a handle
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Post by yknot057 on Jul 9, 2005 21:07:34 GMT -5
Now we're cookin ...... rags I have plenty off, I could even use a clean one for the occasion! Thanks.
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Post by StewRoss on Jul 10, 2005 3:19:11 GMT -5
Yep, I've used rag occasionally, you can do that as well.
I am in Aus, Canberra.
I bought the clutch holding tool from a Yamaha dealer many years ago.
It was cheap as I recall; no other work needs to be done then. Hang it up on the tool board and it's there whenever you need it...you could also make one out of a couple of steel plates welded to a lever arm I guess.
Personally, I'm not keen on using impact guns anywhere on bikes...that's up to you.
I have, (as have others), done things in a hurry or using the wrong tool and broken things. Can be expensive. Main thing with undoing anything is to do it properly.
SR
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