Mini sprint gearing
 

I have an 04/06 r1 could someone give me an idea on gearing for Montpellier. i have a 14 front sprocket thank you in advance

Possible a range i want to hit putumville

Re: Mini sprint gearing
 

I run 13 x 51 in second gear at Montpelier, or 12.24 final. I also use 84" RR tires. If you run the 82" RR, you could get away with less gear.

Bill

Sweet thanks is there any way i could pull off a 14 front tooth if i matched the final gear ratio

Re: Mini sprint gearing
 

I think you'd need a 55 rear sprocket.

Bill

https://www.hyperracing.com/Assets/f...04-11%20R1.pdf

I looked last night and to match gwar ratio i would need a 55. So i take it that is the gear ratio to shoot for and i believe the 14 55 would be a taller gear than what you run would it hurt me

Re: Mini sprint gearing
 

51/13 is 3.923, 55/14 is 3.928, so numerically very close; the biggest difference is you would have to add 4 pins to your chain or suck the rear axle in to get the right chain tension. Also a tiny bit more rotating mass, not sure if it would be enough to affect acceleration, but it's there nevertheless. Depending on whether or not you already have a 51 or 55-tooth rear sprocket you may be better off to replace your front sprocket; sprockets are sort of "consumables" anyway, you should replace them periodically. Saves chains and grief in the long run...

Well i changed from the bailey gear hub to hyper i had a 52 rear sprocket but it wont fit on tbe hyper deal so i have to either buy a rear sprocket to go with my 14 front or buy a new front and rear so just trying to figure out my best option. My main track will be Montpellier but i might hit some mmsa stuff so trying to figure out how i can be close in gearing that it wont be a big change in gearing if i go hit like a 3/8 mile

Re: Mini sprint gearing
 

Go buy the 13 and a 51. You need to build up your gear selection anyways if you plan on traveling at all.

Thank you guys for helping

So do i get the 13 and than build my rear sprocets from that

Re: Mini sprint gearing
 

One thing you'll discover is that track measurements are not created equal; what I mean by that is, for example, Montpelier and Gas City are both advertised as 1/4 miles but you'll find MP is WAY longer around than GC. If you ever go to Route 44 (formerly Union County/Whitewater Valley), listed as 3/8, probably close to MP in length but more banking and more "paper-clippy", longer straights and tighter corners, so gearing isn't just a function of distance. Kokomo, to me, falls somewhere between GC and MP, and Putnamville fairly close to Kokomo. The list goes on...
That being said, if you're just getting started I'd try to find a "happy medium" gear; maybe something, if your "home track" is Montpelier, you can get around pretty well running a line you're comfortable with. Then, if you travel to other tracks, see if you can pick a line close to your happy place at home. Say you find the middle groove at MP suits you and your gearing; at GC that may mean you'll need to run closer to the top. If you venture to Daughtery you may want to drop down to the pole (keeping in mind that place is also almost square).
Point is, my advice is to learn how to drive the car first, then you can play around with gear after you learn what the car likes overall.
Mostly, have fun.

Well i have experence stared in a spribt car st putumville and ran st gc have been in a go kart and a micro now my mini sprint but gearing has always kicked my but reakon i am noy that smart lol i

Re: Mini sprint gearing
 

I have a shift light tach, and set the shift light 300 RPM below my rev limiter. If I don't see the light come on, I need more teeth on the rear sprocket. If I'm hitting the limiter, I need less. Rule of thumb is that one tooth on the rear changes your RPM by 300, one tooth on the front by 1,000.

Bill

Ok that makes sense so here is the question do i nedd a 13 and 14 front tooth with a range of of rear sprockets or will just a 13 work