sprocket size...

[reddmax]

Any ideas on a sprocket size to use with a raptor motor? I'm inquiring for a friend. He has a prosand box frame and is useing a raptor 660 motor because it has reverse. He wants to get the most speed out of it while keeping it easy to take off and cruise around camp without slipping the clutch.Help please...Tire size has not been chosen yet so if you give an opinion please tell what tire size you would use as well.Thanks in advance.

[renegadespec1]

It would help a whole lot if you filled us in on how tall a tire and weight of the machine [smilie=icon_bolt.gif]

[Bugpac]

well stock raptor is about 40 i think, with 20" tires, 22's drag it down...I would say since your doubling the weight, and unless you run 20" tires, you will likely be looking at around a 70 tooth rear, I wouldnt expect to see the raptor push a buggy over about 55 mph....

[reddmax]

Thanks bugpac, So a 70 tooth sprocket with 20'' tires. That will help. If I went with 22's what size sprocket? Or do you not recoment useing 22's?

[plkracer]

My uncles raptor did 81 before it hit the rev limiter in last gear (this was with the wind at sand lake), so if you want it to hit 55, with the same 20 inch tires, I'd say a 65 tooth sprocket. A 60 would be reasonable too. You could always gear the front down. I think it uses a 15 tooth front, so if you went to 13, you could drop the rear to a 52-55. With 22's, I'd go a 13 front and 60 rear.

[Bugpac]

Originally Posted by plkracer\";p=\&quot

My uncles raptor did 81 before it hit the rev limiter in last gear (this was with the wind at sand lake), so if you want it to hit 55, with the same 20 inch tires, I'd say a 65 tooth sprocket. A 60 would be reasonable too. You could always gear the front down. I think it uses a 15 tooth front, so if you went to 13, you could drop the rear to a 52-55. With 22's, I'd go a 13 front and 60 rear.

Id like to see that timing light...

[plkracer]

What timing light? It was gps. It seems to be pretty accurate in a car.

[Bugpac]

Originally Posted by plkracer\";p=\&quot

What timing light? It was gps. It seems to be pretty accurate in a car.

If were talking a mod raptor maybe, but 81 on a stocker ... [smilie=banghead.gif]

[plkracer]

It's got a pipe and suspension upgrade. Like i said, this was with the wind at sand lake, (on the beach, sand was wet) and it was blowing pretty good that day. It'll hit maybe 70 on its own.