Thread: Gearing question for 1000RR

I understand they are 2 separate bikes buton the 954 the -1 did wonders on the track. On the 600 I currently run -1 +3. Just watch on the bigger bikes it will be more sensitive in the corners with the gearing change, but you are a very smooth rider so I would not worry about that too much. If you are doing several tracks I would suggest an assortnemt of different sizes for different tracks.

You could take the gearing spread sheet enter RR specs then play with various gears to get the desired top speed. I would start one down in the front though then go up on the back to increase the chance you will not have to alter the stock chain length.

Cal-Sportbike has a 520 Conversion Kit with -1/+2 gearing.... I guess I can't go wrong with that. That would put me at 15/43.....

Hmmmm was writing my post when you posted yours Phobe.... I might go with 15/42 then...

I did the 520 conversion on mine, and got the RK/Vortex kit. I'd have to look on the bike to verify, but I'm pretty sure it's -1 front and stock rear.

Originally Posted by evl_twn

I did the 520 conversion on mine, and got the RK/Vortex kit. I'd have to look on the bike to verify, but I'm pretty sure it's -1 front and stock rear.

You had it at Grattan last summer?

Yep

Whenever you get a chance let me know for sure what is your gearing. If I recall you where not close to hitting the rev limiter ?

15/41, just went out to the garage and verified. I don't remember what RPM I was at, but I might get a different rear sprocket before next season. My BC800 shows a max speed of 147 from that event though.

The gearing I'm most concerned with is the motard though. I was already at redline in top gear when I came out of the last corner before the straight, so the whole way down to T1 the bike was pinging the limiter. Maybe it's no wonder the thing blew up . I'll bring a few different sprocket sizes for both bikes next time.

I'll look at the DVD you just sent me and listen to your engine going down the straight It will help me decide.

Well, just keep in mind I had to keep backing off the throttle to avoid running into you.

Here is an RC sheet I modded. I assumed no change to the tire diameter as they both run 190/50 however you can insert your measured tire for best results.

I'll have to mess around with that a bit. I have a gearing calculator somewhere. I'm running a 180 rear on my CBR though.

Originally Posted by evl_twn

Well, just keep in mind I had to keep backing off the throttle to avoid running into you.

Originally Posted by evl_twn

I'll have to mess around with that a bit. I have a gearing calculator somewhere. I'm running a 180 rear on my CBR though.

Here is some 208GPa diameters. You can also click over to 209s (Sportmax GP) or Qualifiers

I'm not fully trusting diameter measurements anyway. Sure it might work for static purposes, but I remember Baketech's rear tire grew enough under high speed that it was rubbing his swingarm.

Originally Posted by evl_twn

I'm not fully trusting diameter measurements anyway. Sure it might work for static purposes, but I remember Baketech's rear tire grew enough under high speed that it was rubbing his swingarm.

True but you can use the spreadsheet to see shifts in speed at shift point. Best alternative I have

I am running +1 -1 you rode it... It'll run to 175 mph roughly.
I love it, SOOOO much better than stock.

and buy some rims too would ya... think of the shipping you'll save putting it all in the same box.(It was this kind of thinking that got me into modding trouble in the first place...)

Yeah.... I unfortunatly rode your bike

I WANT THOSE DAMN RIMS

Originally Posted by superhawk

Got a sale going on for the next two weeks
Afam 520 Race kit $212 shipped

I will definitely put an order before the 15

Originally Posted by NorthernRR

You can let me know what you think of the new rear Ohlins too (Sorry I had to...)

Only thing that was left to be done on you bike