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cgman

Joined:

Feb 09

Posts: 119

cgman says:

chain and sprocket help...

hi all.

hope you are enjoying the nice weather (what we are getting of it).

i am thinking of getting some new sprockets and a chain for my cg, to try and make it quicker.

i have found a sprocket that has 2 more teeth to go on gearbox end and a sprocket with 2 less teeth rear wheel end, would this work? also, can anyone recommend a type of chain (i.e. o-ring, x-ring or standard)

any help would be appreciated.

keep biking!!!

cgman

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  • Posted 6 years ago (27 August 2009 04:51)

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kestrel69

Joined:

Nov 05

Posts: 431

kestrel69 says:

????

Would think you might gain about 4/5 MPH increase in top speed but you will lose a lot of your acceleration. The bike would be being asked to pull a much higher gear, bit like trying to pull away in 2nd :unsure:

 

You would also need to check that the front sprocket will not foul the casings etc in any way

 

Not something I'd bother with myself :smile

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v1nn1e

Joined:

Jan 09

Posts: 845

v1nn1e says:

Does it have a Tacho?

Its only worth doing if you can rev-out beyond the red line in top - otherwise you'll probably end up going slower...

If it doesn't rev that high, then you'll need more power first before changing the gearing.

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gsxr884

Joined:

Aug 09

Posts: 67

gsxr884 says:

im with V1nn1e

on this .

Thats a massive change in gearing and it probably will not pull it.

Which model and year is it.

Try getting a Phil Joy cam for it.

It will go a bit then

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m1ks

Joined:

Apr 09

Posts: 908

m1ks says:

.

Way too much, a single tooth extra on the front is equivalent to about three less on the rear, so to add two to the front then lose two from the rear will leave you with the most gutless CG around, the theoretical top end would be good but plain and simple, theres not enough power in the motor to get you there, you'd be lucky to pull 45 on an incline.
Try first increasing the front sprocket by one and then two teeth if it seems to want to give more.
You'll also need a longer chain, alternatively you can get a smaller rear, (more expensive) and lose a couple of links.
You can calculate your gear ratio selection and theoretical top speed using the calculations on this page.
Sprocket ratio

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