summit 583 gearing

Hello, What track size to you have and what kind of riding are you gonna be doing?

Not exactly sure about the S chassis gearing in a 583 sled but I beleive my 97 670 summit w/ 136 track was factory geared at 20/45 when I got the sled it was spinning a 151x2x15 track , when I installed a 153x15x2.25 we dropped it to 19/45 and turned that track with easy, now clutch engagement was around 4000 and sled ran awesome.

If your not worried about high top end speed the lower gearing performs really well and still will haul at speed on the trail and have plenty of lowend snap on the bottom. we did all this on my sled and never changed the clutchin to what it was it wasn`t stock but did a bunch of track size changing and gearing changes and didn`t seem we needed to play much with the clutching, but any sled can usually be improved with better clutching that actually is the first and best mod you can do to any sled.

My 04 Rev Summit X 800ho when I got it was turning a 144x16x2 track and was set up really low geared at 19/47 and I have not changed that yet and have swapped to a 159x15x2 1/8 and turns with no real noticeable difference in power just awesome traction and floatation now. and I can still do some awesome speeds, I don`t have a speedo on this sled but I have went faster on this sled than Any other sled I have ever owned. faster than I really need to be goin..

Good Luck, Wildcard

Actually if you lower the gearing you will likely lose some RPM. Clutches are load sensing and lower gears allow them to upshift farther/faster.
How does it work with the 1.95 gearing?....as said, depending on your altitude, track, riding style etc...you may be just fine with the existing ratio.

Can you just go smaller on the top gear and keep the same chain?....19 or 20? I would ride it first for sure....then you know for sure what effect the change had. 1.95 is (IMO) low enough for the 136.

I had an F2000 580 that started life as a Grand Touring, but was a Summit by the time I was done with it. (should be exactly same gearcase as the S chassis) The Grand Touring had real tall gears, and I just dropped the upper gear to a 19, and kept the stock lower I think. I think I was down to about 2.44/1 ??? Possibly even 2.66 on the outside... It was a dozen+_ yrs ago...

It was quite a bit more than 2.25 tho - I know that for sure.

For the 136 at sea level it was pretty short gears, but the motor didn't hafta work anymore! If you would be running higher up - those gears might be even better. It went fast enough for me. If I was into speed I would have bought a Mach.