Gearing ‘17
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It's possible. Larger gear changes will require a re-flash of the ECU however.
I have a yellowbox to fit it, I guess that I should have asked if anyone had suggestions on what tooth sprockets I could run. Looking at a set, but I don't want it to be too low. had a good gear selection on my old RC51...
Factory on the SC77 is 16 front 43 rear. I went with a 15 tooth front and 45 tooth rear, so down 1 in the front and up 2 teeth in the rear. 15 in the front is about as small as you want to go without having chain wrap issues. You can go pretty big in the rear if you want, at the expense of top speed of course. What you choose depends on your riding. I wanted to have more aggressive gearing, but the local track here has a 190 mph main straight so I didn't want to sacrifice too much top speed.
Plug in your bike here and it will let you play with sprockets and show you your speed in each gear/RPM and any differences in chain size with new gearing:
www.gearingcommander.com
Plug in your bike here and it will let you play with sprockets and show you your speed in each gear/RPM and any differences in chain size with new gearing:
Gearing Commander - Motorcycle Speed and Drive Train Calculator v7
Motorcycle speed and sprocket calculator with bike database for gearing, sprockets, tires and chains of over 1750 bikes. Request yours to be added as well.
www.gearingcommander.com
THANK YOU!!Factory on the SC77 is 16 front 43 rear. I went with a 15 tooth front and 45 tooth rear, so down 1 in the front and up 2 teeth in the rear. 15 in the front is about as small as you want to go without having chain wrap issues. You can go pretty big in the rear if you want, at the expense of top speed of course. What you choose depends on your riding. I wanted to have more aggressive gearing, but the local track here has a 190 mph main straight so I didn't want to sacrifice too much top speed.
Plug in your bike here and it will let you play with sprockets and show you your speed in each gear/RPM and any differences in chain size with new gearing:
Gearing Commander - Motorcycle Speed and Drive Train Calculator v7
Motorcycle speed and sprocket calculator with bike database for gearing, sprockets, tires and chains of over 1750 bikes. Request yours to be added as well.
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227 Posts
I run 16/44 with a 200/60 rear with no TC issues.
It didn't change your TC behavior at all? I'm running 15/45 with a 200/55 rear... though mine's flashed for the gearing and tire, I should have tried it with a stock ECU.
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227 Posts
Not to my knowledge, Have done 2 or 3 track days with that same setup in mode settings 1,1,1. I am woolich flashed with racetools however i havent touched any gearing parameters at all.
That’s interesting. It sounds like the lower settings aren’t effected at all, nice. My tuner mentioned setting TC and WC to max to see the difference so maybe only the more aggressive intervention settings are noticeably sensitive to gearing and tire circumference changes.
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227 Posts
I tried TC on 5 yesterday as it was damp out in patches. No intervention at all either.
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