Maintenance & Technical > KX500 Original
WTB: Flywheel Weight for '86 KX500
Platypus:
Just thought I'd throw this out there. It's something I read a few weeks ago and is from Yamaha's website.
*NOTE: Flywheels are measured by inertia weights because the affect of the weight differs depending on where it is in relation to the center of the crank. So a 4 oz. and 6 oz. weight might have the same affect depending on where they are positioned in relation to the center of the crank.
gil2264:
Gee... What timing for this post. I just got my 14 oz. weight...havn't had time to put it on yet.
KXcam22:
That yamaha blurb is a good description. The action of a flywheel weight is based on inertia and not just weight. Inertia is a function of weight and it's distance from the center of rotation. In the old days we used to make brass bands (not the kind you listen to) on a lathe and shrink them onto the outside of the stock flywheel. A friend put 3 lbs of brass on his KTM 420 flywheel (in stages). Was weird to ride but definitely tractible (until the end of the crank broke off from all the weight). To add weight with a steahly, it may be possible to machine a heavy disc and use the holder attachment bolts to bolt it on to the face of the flywheel. I was considering going the other way and machining a steahly down to give about 10 oz. Something I want to test this summer. Just some thoughts. Cam.
alan:
That is the way I want to go is less weight not more! I am still looking at the Stealthy to see how to remove weight. I don't like the heavy strip that holds it on either.
Alan :-)
OrangeDawg:
I put a 10oz on my '02 K5 and really liked it. Easier to start, easier to ride slow in rocks, still accelerated hard as ever. I could only feel it when I started the bike and when riding real slow in the rough.
:-P
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