This engine would be fun to try out

[tats4life]

that motor would be fun in a drag chassis like nyuk's looks like lots of fun but damn expensive if anything brakes.

[Stuff]

Still not as big as the Raptor's 660!   

is this guy serious?

ummm, no, I ain't serious

[hamuel]

to bad it's not a new louie motor... His new 10mills are pushing the same power.

[SICK BOY]

Thanks for the info cotton.

[banshee04le]

I was looking at his other items,whats a 1-4 overdrive tranny?

I hope I do this right:

 

The gears 1 through 4 have been back cut so you don't have to use the clutch to shift, along with the shift drums.

Basically what happens is you are in 1st gear, and when you normally shift, you pull in the clutch, you move the shift lever causing the rotation of a drum which in turn slides a fork that engages the drive dogs of the next gear.

 

With an overdrive (sometimes called an override) the drive dogs on the gears have been back cut with ramps that allow them to engage flawlessly, but the shift drums have been relieved as well. When you select the next gear the counter shaft spins faster than it was with the previous gear, and the gear going slower is forced away from the driving gear due to those ramps, and the fork is allowed to slide over and out of the way so it doesn't get bent.

 

This is why you have to pull in the clutch when you lift off the gas with an override. If you haven't selected another gear, there is no clearance on the shift drum for the fork to slide, and the ramped drive dogs will allow (force) the gear to disengage, but there is no where for the fork to slide, so it will get bent.

Good for drag racing imho. Not for the everyday rider.

 

When they mention straight cut gears, they are talking about the primary set. From the factory they are \\\ because they are quieter mostly. But this can cause side pressure on your crank and cases under extreme hp. Straight cut gears are stronger, and won't cause a side loading situation when you have 149 hp.

All new knowledge to me. Thanks Stan. I almost feel like I could go out to the garage right now with my dremel and backcut my dogs. I'm not sure about relieving my shift drum, so maybe I better leave it to the pros .