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Variator fit
by: 926am - Apr 11, 2018 20:18:06 GMT -5
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Post by 926am on Apr 11, 2018 20:18:06 GMT -5
I recently installed a dr pulley variator and am wondering the minimum amount of shaft gear the outer plate needs to grip. Adding shims creates a lower gear, but I want to ensure that there’s enough of the shaft gear available for the variator to perform correctly. Right now it’s about 1/8-1/4”.
Thx.
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Post by cyborg55 on Apr 12, 2018 8:59:50 GMT -5
Post some pics please
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Post by 926am on Apr 12, 2018 17:38:38 GMT -5
(Not sure if pic was uploaded)
Without any shims, exposed gear part of shaft is just less than 1/4”. I suppose I could always grind down the spacer, but I’m not sure that would solve my problem.
The reason why I am interested in adding shims is that this is a new variator, and I’ve noticed belt wear as well as slower accelleration.
The original variator came loose while on the road and pieces were lost, so I have no comparision w/the new parts.
(bike is a 2004 cf moto v3)
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Post by chewbaca on Apr 13, 2018 11:27:53 GMT -5
your nomenclature is not clear
so restate what you mean or give pictures please
the drive shaft has a splined section just before the threads
IF that is what you are talking about then you need to correct for the misalignment you are introducing between pulleys
or suffer a loss of belt life and power delivery
the fixed pulley side on the front must be aligned with the fixed pulley side in the back
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Variator fit
by: 926am - Apr 15, 2018 13:46:15 GMT -5
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Post by 926am on Apr 15, 2018 13:46:15 GMT -5
Interesting. I hadn’t thought of that.
How do I test for mis-alignment?
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Post by chewbaca on Apr 15, 2018 22:31:24 GMT -5
the belt should be parallel with both pulley faces
if you hold a good straight board against the veriator fan you can measure the distance from the belt at the front and then at the rear
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Variator fit
by: 926am - Apr 23, 2018 20:01:15 GMT -5
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Post by 926am on Apr 23, 2018 20:01:15 GMT -5
Yes, it seems the outer pulley was not straight. I re-installed and belt wear seems to have been halted. Thx.
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