Author Topic: Crank Boss  (Read 2326 times)

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Offline Rossvickicampbell

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Crank Boss
« on: October 17, 2013, 09:36:03 pm »
Mr Geoff (GMC) - has helped me out with some alternatives but can anyone tell me if an SC500 crank boss fits a YZ360 - it also fits the Dt250/360 by the way so hoping I can.

cheers and ta
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica

Offline GMC

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Re: Crank Boss
« Reply #1 on: October 17, 2013, 10:47:44 pm »
Glad your still with us you old fart, I was stupidly thinking of you re; the plane crash.
Now that I know your okay I can say that helping you must have been a momentary lapse of reason ;D

PS Is the 500 the same stroke as the 360?
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Offline Iain Cameron

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Re: Crank Boss
« Reply #2 on: October 17, 2013, 11:08:39 pm »
stroke is the same as mx 360 ,70mm Iain
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline Rossvickicampbell

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Re: Crank Boss
« Reply #3 on: October 18, 2013, 03:43:03 pm »
sorry guys - my bad - kick starter crank boss  :P
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica

Offline Iain Cameron

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Re: Crank Boss
« Reply #4 on: October 18, 2013, 07:20:14 pm »
apart from the first 3 numbers they are the same 360 = 431-15621-00 mx 250\360, 363-15621-00 sc500 same as 250 and 360 mx so at a guesstimate I would say same part . Iain 
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline Rossvickicampbell

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Re: Crank Boss
« Reply #5 on: October 19, 2013, 12:11:06 am »
that's what I was hoping - only model number varied.

Ta Iain.

cheers
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica

Offline Rossvickicampbell

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Re: Crank Boss
« Reply #6 on: November 28, 2013, 09:32:11 am »
well unfortunately there are some differences - probably not surprising actually.  It appears the shaft from the kick boss that the kick crank goes onto on the YZB model is a lot narrower.  Splines and everything match so not too much of a drama I will just try and machine down the ones I have to match the YZB kickstarter and I should be away.  Everything else I needed - springs, circlips, washers and balls all readily available so should be like new when finished  ;D

thanks
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica

Offline Freakshow

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Re: Crank Boss
« Reply #7 on: December 02, 2013, 01:35:47 pm »
RD250/350 just use the whole kick stater
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