Jason Fletcher
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| posted on 5/3/09 at 10:11 PM |
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offset engine& prop assembly pics anyone?
I'm looking whats the best way mount the propshaft to the engine.
Whats method have you used for the short prop to the centre bearing or reverse box?
Currently I have a rubber cush drive which is rigidly fixed to engine end of the prop and a U'J on the reverse box end. I'm not over the
moon with this setup because there's always side load on the reverse box and output shaft bearing.
Any pics in anyones archives?
Thanks
Jason
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ReMan
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| posted on 6/3/09 at 08:12 AM |
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Most just use the readily available 'prop adapter flanges' with a custom made prop. and possibly a rubber TRT (shock absorber)built in.
Same for the reverse box to the diff
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motorcycle_mayhem
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| posted on 6/3/09 at 08:20 AM |
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Those rubber couplings (Nova, etc.) are actually rather good, but they don't like to be out of line at all. 1 degree and they'll start to
complain. If you can straighten things up, use it.
Otherwise, you'll need the usual UJ's and splines on the front section, reverse gearbox, and then UJ's and splines on the rear with
a TRT. Then you can run whatever angles take your fancy (within reason).
Your bike engine won't mind a side load on the radial output bearing, it's what it's designed for. My experience of reverse
gearboxes is that you need to be very careful about bearing loads...
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Jason Fletcher
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| posted on 6/3/09 at 11:30 AM |
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quote:
Originally posted by motorcycle_mayhem
Those rubber couplings (Nova, etc.) are actually rather good, but they don't like to be out of line at all. 1 degree and they'll start to
complain. If you can straighten things up, use it.
Otherwise, you'll need the usual UJ's and splines on the front section, reverse gearbox, and then UJ's and splines on the rear with
a TRT. Then you can run whatever angles take your fancy (within reason).
Your bike engine won't mind a side load on the radial output bearing, it's what it's designed for. My experience of reverse
gearboxes is that you need to be very careful about bearing loads...
I quite like the Nova cush drive but don't like the fact that its used to sort the 3 deg angle out in place of a U.J. I wonder if I could fit
the Cush drive between the engine adaptor and a U.J on the prop? that way I get the "cushed" drive and no side load.
Waht do you guys think?
jason
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ReMan
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| posted on 6/3/09 at 01:16 PM |
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Think you're adding weight and breaking points
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Jason Fletcher
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| posted on 6/3/09 at 01:56 PM |
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Unfortunatly I have already got a "breaking point" hence my questions
Jason
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