Cranks joined with chain or gears?

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Bogan
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Cranks joined with chain or gears?

Post by Bogan » Thu Sep 16, 2010 3:10 am

Dumb question, but I've checked the parts book and can't see it. Are the cranks joined with gears (counter rotating) or a chain (rotate the same way)?

What page of the parts book can I find it on?

Cheers,


Tony

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ScottaKR
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Post by ScottaKR » Thu Sep 16, 2010 7:29 am

Both your ideas are partially correct. They are joined using gears, but they use 2 smaller gears (one on each crank) which drive a much larger gear mounted between them. You need to get yourself a workshop manual, as the parts book explains almost nothing.
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the KR kid
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Post by the KR kid » Thu Sep 16, 2010 8:59 am

As Scott said, you really need a manual for this, but if you've only got the parts book, the cranks are on page 6.
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Post by TwoStroke Institute » Tue Sep 21, 2010 1:34 pm

So both cranks turn the same direction via an idler gear, hmmmm anyone ever ditched the idler gears and counter rotated the front cylinder?
Is the gearbox/clutch strong in these?
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ScottaKR
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Post by ScottaKR » Wed Sep 22, 2010 8:02 am

TwoStroke Institute wrote:So both cranks turn the same direction via an idler gear, hmmmm anyone ever ditched the idler gears and counter rotated the front cylinder?
Is the gearbox/clutch strong in these?
That'd take so much re-engineering it's not even funny. For a start, the idler gear (refered to in the manual as the Clutch Gear) not only links the two cranks together, but also joins them both to the clutch and kick starter. It's pretty integral to the design.
As for the gearbox, I'm not really sure how much abuse it would put up with, but the clutch is reasonably hardy.
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Post by TwoStroke Institute » Fri Sep 24, 2010 1:42 pm

I havent pulled one apart so I was just thinking, have you got a pic for me please?

:-k
So the clutch has to spin backwards for the countershaft to spin forwards, with an idler gear in between the clutch and the cranks, the cranks must spin backwards? Is that correct?
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Post by StrokerBoy » Tue Oct 05, 2010 10:49 am

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