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08-20-2013, 09:53 PM
Post: #1
Overdrive Pulley
Hi there,


I am new to this forum but have owned a 2010 yamaha v star 950 Tourer for two and a half years. I am interested in "re-gearing" my bike for better top end, i.e. overdrive fifth gear. I did some online research and found a popular modification on the Yamaha Raider for better bottom end is to swap the stock Raider rear pulley (66T) for a stock 950 rear pulley (70T). I concluded that the opposite exchange should work for better top end on the 950. Everything bolted up perfectly. However, there is not enough adjustment at the swingarm/rear axle to achieve proper belt tension. Obviously, my thinking was flawed. DOH! The mechanic suggested a shorter belt. The manufactures do not list belt dimensions, just part numbers. This is where I need assistance. Has any one done this modification? If so, what belt was used to achieve proper belt tension. Comments/questions?



Thanks,

Julie
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Matt
08-21-2013, 04:11 AM (This post was last modified: 08-22-2013 01:24 AM by Gibbo.)
Post: #2
RE: Overdrive Pulley
@japipkin welcome to the Crew and I am sure that some of our more knowledgeable 950 members will be able to help you on this.

I would look for a custom bike shop or someone who builds motors close to home, take my belt to them and measure it up against their stock, pretty much in the same way you would measure a fan belt for a car engine.

Good luck and be sure to let us know how you get on as it may help other members.

Gibbo
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08-21-2013, 11:13 AM
Post: #3
RE: Overdrive Pulley
Welcome,

Gibbo is a wise man. His advice holds true. I'd do that if I were in your shoes.

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08-21-2013, 11:40 AM
Post: #4
RE: Overdrive Pulley
uhoh, rhymin matt, or is it rappin matt?

2002 VStar 1100 Classic, cobra exhaust, memphis shades, modified air filter and housing, hwy/passing lights, hwy bars, mustang seats, oil filter relo, magnetized drain plug, tank bra with studs and pouch.
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08-21-2013, 12:41 PM
Post: #5
RE: Overdrive Pulley
(08-21-2013 04:11 AM)Gibbo Wrote:  welcome to the Crew and I am sure that some of our more knowledgeable 950 members will be able to help you on this.

I would look for a custom bike bike shop or someone who builds motors close to home, take my belt to them and measure it up against their stock, pretty much in the same way you would measure a fan belt for a car engine.

Good luck and be sure to let us know how you get on as it may help other members.

Gibbo

Thanks for the welcome Gibbo! That is good advice. I will do some research and see what I find for custom shops and if they would be willing to help. I will post with any updates if and when they happen.
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Gibbo
08-21-2013, 07:25 PM
Post: #6
RE: Overdrive Pulley
what ive done with my truck when i used smaller pulleys was take some string and wrap it the way its supposed to go and then measure it. having the belt length helped me alot. maybe you could try the same?

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Gibbo
08-22-2013, 12:52 AM
Post: #7
RE: Overdrive Pulley
(08-21-2013 07:25 PM)Mr RCOM Wrote:  what ive done with my truck when i used smaller pulleys was take some string and wrap it the way its supposed to go and then measure it. having the belt length helped me alot. maybe you could try the same?
I know a new belt for a 1300 is like $400.
I saw on one of those bike custom shows they used a belt tentioner BUT you better do it right!!!

My V-STAR 1300 is my 22 Motor Cycle
Been riding over 50 years
The motor on the 1300 is twice as big as any bike I've owned before.
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08-22-2013, 12:59 AM (This post was last modified: 08-22-2013 01:05 AM by Mr RCOM.)
Post: #8
RE: Overdrive Pulley
Holy crap! 400?!

Yeah wow... just googled it. In-freakin-sane

I saw that Gates makes motorcycle belts though. They wanted the width and tooth count.

And I did find the 1300's specs... just throwing it out there...
1.125" wide drive belt, 156 tooth, 14mm pitch

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08-22-2013, 01:31 AM
Post: #9
RE: Overdrive Pulley
@japipkin there is another way to get the adjustment you require, provided you have the room.

If you are running out of adjustment (length) on the adjuster bolts on either side of the swing arm, it may and I stress the word may here be able to find a slightly longer bolt of the same specs - thread/pitch/tensile etc. that you could simply swap over!

Gibbo
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