dirt bike hotsaw

[romeo]

I see.... thse things gotta be crasy.......

Actually if the operators crazy it seems to help.

 

[twoodward15]

I have worked on bikes for years as well and know withe the valve open you have no lowend... But I guess they are reving these up so fast anyway they are at top end in a second. I knew about the cooling issue... It is like sleds for grass drags..... they don't have a cooling system because they are only being run for a second...... running the chain off the water bump? do they regear the pump... seems direct drive off the crank would spin her faster......

There's no need for a low end. It's not like you have a 200 pound rider on a 250 pound bike here. Youve got a 2 foot bar that spins 3 pounds of chain. So we have about 400 pounds of crap less to move with the engine. Who needs low end when you aint moving any major weight!!! WOT and hold it there.