> Papa _ Wrote:
> -------------------------------------------------------
> Dunno specifically about your question. However, I killed some time
> today reading about crank balancing and found this cute yerterb videah.
>
> Simple little static balance setup. Probably not perfect, but better
> than nothing. Since you seem like you’re in the market for crank info,
> I’m going to dump it here.
>
>
This is NOT GOOD for a puch crank. you have to use a balance factor. In our case, horizontal cylinder it't about 30-40%. this means you have to weight the (half) conrod, pin, needle bearing and piston, take 40% of this, hang that in your crank, then it should not be moving in any position.
back on topic, i have used topracing cranks in my engines without problems, with high hp 70cc kits.