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Author Topic: Daytona gearing  (Read 577 times)

Jason248

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Daytona gearing
« on: December 20, 2017, 07:20:10 PM »
Trying to figure out what gearing to run at Daytona on a 07 gsxr 750 stock motor
 thanks Jason

ymracing

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Re: Daytona gearing
« Reply #1 on: December 21, 2017, 06:22:21 PM »
So hard to say. Your size, your fairing, your comfort level, what the bike will tolerate in the infield. Front sprocket easiest, but largest bump. Every time I raced there I thought I would have been happier with different gearing!
Garry W. Bird
YMRacing, Champaign, IL USA
AHRMA BOT F2, CCS  AM Lightweight F40; Lightweight Grand Prix #72
Lightweight....ya sure...

badmoon692008

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Re: Daytona gearing
« Reply #2 on: December 22, 2017, 10:26:17 AM »
Like YMracing said it depends on a lot of factors. I went there in October on my 09 750, I weigh 285 pounds and am on a bone stock bike (with a likely tired engine) I was told that the suggested gearing to run is 16/42 to start, if I was fast go to 16/41, and if I was stupid fast and light go 16/40. I didn't have any rear sprockets that small so I just took those ratios and played around with them. Ordered an 18 tooth front sprocket since they're cheaper than a rear and then I could just run the rears I already had, but an 18 tooth front sprocket won't fit, it hits one of the mounting points for the sprocket cover. Ended up finding a used 43 and 42 tooth rear sprocket, and ran 17/43 all weekend. That was likely overgeared for my pace, as I was only ever pulling the top of 5th, but being my first time there I still ran 2:03's by my first race, and finished 8th out of 16 in the heavyweight SS.

apriliaman

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Re: Daytona gearing
« Reply #3 on: January 14, 2018, 09:43:40 PM »
On my lightweight class bikes I use most of the time a 1 tooth bigger in the front then on normal tracks and the same rear.On a 750 is much faster,you got to have a gearing so if your drafting you can gain a few mph and not over rev the engine.If it's too short you'll be in the rev limiter.
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