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PostPosted: October 19, 2008, 12:32 pm 
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Joined: January 23, 2008, 4:01 am
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Location: Greece
This is my Sierra propshaft. I just removed the "doughnut" and i came with this triangle flange. Could someone suggest how i am going to connect this 3-bolt flange with the 4-bolt sprocket adaptor fitted to the motorcycle engine?


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PostPosted: October 21, 2008, 4:09 pm 
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Joined: September 13, 2005, 9:04 am
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Option 1 - cut off the drive shaft end and use a more universal end that'll mate with the adapter.

Option 2 - fab a 3 to 4 bolt adapter out of ~30mm thick steel

Option 3 - ditch the adapter. Fab yourself one from the output sprocket that'll mate with the driveshaft end.

My vote would go with #1 ;) . Especially if the driveshaft isn't the perfect length already...


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PostPosted: October 21, 2008, 8:41 pm 
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Joined: May 25, 2007, 11:13 am
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Location: Canada
2 piece drive shaft is needed for bec


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PostPosted: October 21, 2008, 9:27 pm 
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Joined: August 19, 2006, 5:48 pm
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Location: S. Florida
Echidna wrote:
This is my Sierra propshaft. I just removed the "doughnut" and i came with this triangle flange. Could someone suggest how i am going to connect this 3-bolt flange with the 4-bolt sprocket adaptor fitted to the motorcycle engine?
If the doughnut is a Guibo you might want to look at this topic.

http://www.locostusa.com/forums/viewtop ... ight=guibo

If you can mount the Guibo between the engine and the center drive shaft bearing, at the bearing end of a two drive shaft setup at an angle of less than 2° you're all set.

This would take the place of the rubber shock absorber that is usually used at the rear sprocket of a motorcycle (a form of a a Guibo).

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PostPosted: October 26, 2008, 4:24 am 
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Joined: January 23, 2008, 4:01 am
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Location: Greece
4G63-7 wrote:
Option 1 - cut off the drive shaft end and use a more universal end that'll mate with the adapter.

Option 2 - fab a 3 to 4 bolt adapter out of ~30mm thick steel

Option 3 - ditch the adapter. Fab yourself one from the output sprocket that'll mate with the driveshaft end.

My vote would go with #1 ;) . Especially if the driveshaft isn't the perfect length already...


I would also really consider option #3 because you will fabricate an adaptor to make for the distance required and no need to cut and wed the propshaft, so no safety issues.


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