98' Thundercat

Top speed for 23-40 @ 8600-8700 rpms
Top speed for 24-39 @ 8600-8700 rpms


RACER USA

I will try to attach a calculator.
Input your numbers and it will show you the POTENTIAL speed numbers.

I have Vista Premium...unable to open...search function is down also

You need microsoft excel or a free program which will simulate it

Any chance a fellow T-cat owner can help a brother out??

105 MPH
112 MPH

So if the belt is as high as it can go in the primary (without falling out) and as low it can go in the secondary (without hitting the center and spinning), what is that gear ratio (should be better than 1 to 1) ?

Thanks

As I recall it should be around .83.. in overdrive

How fast would my 99 zrt800 go? Stock pig rich jetting from the factory, and doesnt have the update, Im also alight weight

23/40 = 1.74 x .88 = 1.53
106 121 mph

24/39 = 1.63 x .88 = 1.43
114 130 mph


Auggie

Auggie figures are close. You could tweak them a bit up. My stock NSSR 98 zrt 800 ran 123.5mph in the 1/4 on asphalt with 23/40 gearing. It did have a bit more in it though. I did try some really weird clutching once, ran 20-39 gearing to 118 mph but you need a big over rev to get it there. The zrt motor just didnt have the grunt on the bottom end to pull this setup. But it worked well on other MFG brands with stout bottom end.

John

10% overdrive

23-40 @8700 119.4
24-39 @8700 127.8


15% overdrive....

23-40 @8700 126.4
24-39 @8700 135.3

Hey J

Hope all is good. Can you post the formulae for the gear / rpm again. Thanks

Call me when you can.

Mark

hmmm....I almost feel you are referring to something else!!!!!

I cheated.... Snowmobile World calculator.....


Merry Xmas Mark!

Jonathon