A quick gearing question

[SledVentures]

Guys, hoping ya can help me out. Forgot almost entirely all my specs this summer. I have03 RX1 Er's.

Wha is the stock gearing?

I could use a little more on the top end so what do you recommend that will work with my reverse?

Thanks in advance.

Dean

 

[neonphil]

03 RX1 Er 24-38

 

[neonphil]

04 warrior 23-38

 

[SledVentures]

How can that be with reverse? Do you know what the regular RX 1 is then? Trying to determine the best ratio.

 

[RobX-1]

Per the owner's manual:
RX10/RX10S/RX10R/RX10RS = 38/24 (1.58)

However, I thought that the bottom geared changed when you had a reverse but it does not indicate that. Only the moutain RX-1 had a bottom 40 tooth gear. I put reverse on my and I was thinking the gear was larger than stock but I would have to double-check that to confirm. I'm not sure if Yamaha offers a 39 gear for the reverse models but I thought I saw on Pioneer's website that they did offer some different sizes for the reverese models. I, too, was thinking about re-gearing but wasn't sure which way to go.

 

[RobX-1]

that was suppose to be 1.58 ration but apparently the eight and close parenthesis is what is used for 8) .

 

[Buckeye]

Gearing

Yamaha offers a 38 or 39 tooth gear for reverse models. The 38 will probably give you your best top end for a stock sled. I did a lot of testing with gears on get my best top speed with the 38 tooth gear. You can improve your acceleration by gearing down though, without losing much top speed.

 

[vcrash]

Buckeye, Are my correct to assume then that you would use a 38 bottom gear with turbo while still keeping reverse and having the extra power to gain top end advantages?

 

[Buckeye]

38 Gear

Yes I intend to keep the 38 tooth gear and experiment with the top gears. I have a 25 tooth which I tried last year. I gained no top end with it but didn't lose much acceleration either. Now with the turbo I should have plenty of power to pull it on top and it should make for one hell of a midrange. I had a 183 hp Vmax-4 that loved the lower gear ratios.

 

[1xr]

Buck will the 25 gear fit with stock length chain?

 

[Buckeye]

25 tooth gear

It fits with a 70 link chain. I can't remember if that is stock. I think it is.