Motorcycle Racing Forum

Motorcycle Racing => Wrenching => Topic started by: buellracerx on April 02, 2012, 11:56:01 PM

Title: Road America gearing R6?
Post by: buellracerx on April 02, 2012, 11:56:01 PM
getting a bone stock R6 ready to run MWSS this year, trying to decide if a Vortex 520 conversion is worthwhile. Any suggestions on gearing for Road America? expecting to be mid-pack amateur
Title: Re: Road America gearing R6?
Post by: Woofentino Pugrossi on April 03, 2012, 03:14:44 AM
Maybe down 2-3 teeth in the rear. Just a guess. Thats what I did with my F2 there.
Title: Re: Road America gearing R6?
Post by: design-engine on April 03, 2012, 09:44:04 AM
On my Suzuki 600 Im going to try front 15 and a rear 43 or 44 to see where I shift into 6th on those 3 straits.  Ill get less drive out of the turns but maybe make up for it on the straits.
Title: Re: Road America gearing R6?
Post by: twilkinson3 on April 03, 2012, 12:22:02 PM
On the 03 CBR 600 I used to play with there I went down 1 in the rear and she would pull almost to the HP peak in 6th on the long straights and still get off the corner well everywhere else, not sure what you would need on a R6  per se but at least a relative comparison
Title: Re: Road America gearing R6?
Post by: RoyHefner on April 03, 2012, 02:55:42 PM
I have experimented with gearing on my Triumph Daytona 675 (Supersport) at Road A, and find that 16/45 usually works best for me (stock gearing is 16/47).  One thing to consider:  strong winds can have a fairly significant effect on top speed on the long straights at Road A, so if you're geared to top out very close to redline, a big wind change can put you into the limiter.
Title: Re: Road America gearing R6?
Post by: buellracerx on April 03, 2012, 11:45:29 PM
thanks for the input guys! I think I might have an idea of what direction to take now...see you there!
Title: Re: Road America gearing R6?
Post by: twilkinson3 on April 04, 2012, 10:31:20 AM
Roy Makes a good point, there is also the draft to consider, it's amazing how much faster a 3-4 bike freight train goes than a solo rider
Title: Re: Road America gearing R6?
Post by: sidepipe79 on April 05, 2012, 09:36:07 AM
Twilkinson, he has to get close to another bike before he worries about a draft.  :lmao:
Title: Re: Road America gearing R6?
Post by: buellracerx on April 07, 2012, 02:02:37 AM
True that sidepipe, I'll just pull away early :P
Title: Re: Road America gearing R6?
Post by: design-engine on June 20, 2012, 04:27:12 PM
I know Road America race is over but I thought about it a great deal.  On my GSXR600 I used 15x44 (same at Road Atlanta) and reached my 16000 rpms limit.  I considered a 43 rear sproket.  I should have at least tried it but didn't.  I didnt want to sacrafice drive out of the turns but almost all the passes on me was coming into T1-T5 Road America and their simular long strait at Road Atlanta T9.  just needed a little bit more engine...   An engine rebuild helped significantly at Road Atlanta later.
Title: Re: Road America gearing R6?
Post by: Tdub on October 12, 2012, 08:30:00 PM
R6 RA 15/41