Hi all,

i want to lighten the flywheel on my montesa 315 '02. Someone of you could tell about how to made this mod?

all you need is a friend with a lathe,or take it to your local engineering work shop.i did one recently,it only took 20 minutes. you must make sure it is perfectly true or you will end up with lots of vibration!!!

ok, but how much material i have to remove? how many millimeter? in the inside or outside of the flywheel?

hmmmm wont douing this make the engine spin faster? and also this cant make the bike that much lighter so whats the point?

Ned, it will make the engine respond quicker (more lively) not make it spin quicker, some people like the bikes to pick up quickly over slower responses to opening the throttle

guna have a go on my bike i thbink its a gasgas though, it shud still work though.shudnt it? o and how much material shall i remove?

Ned, the gasser may already have a weight you can take off first before removing any material, or you may be able to buy a lighter flywheel for your bike.

Edited August 28, 200619 yr by Betarev3

do you have a schema or photo of that?

thanks for your support FF.

You think it's worth the trouble?

ok, i would like to pull the flywhell off, but i think i need an extracting machine for flywheel. Right?

hi, this is my flywheel.

FF could you mark in the photos where i have to remove the material, and how many mm?

tnx...

Edited August 30, 200619 yr by bascello

Hi, i have to remove the red marked area?

Edited August 31, 200619 yr by bascello

Hi, i have to remove the red marked area?

I have done this mod and it is worth it. Just to give a little more info, each 1mm you take off is 60 grams and the 12mm would be 720 grams. I personally took off 10mm and it kept the bottom end grunt but excelled the reving speed and access to the power.