Should i get a different sproket, i want higher revs at slower speeds. - 2018 KTM 790 Duke Forum
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post #1 of 4 (permalink) Old 03-01-2020, 05:45 PM Thread Starter
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Should i get a different sproket, i want higher revs at slower speeds.

So this bike (2018 790Duke) is 99% used for communting to work, in heavy traffic, with a part through a suburbon area with lots of roundabouts (Circles for our South Afrikan readers).

I'm finding it tricky to negotiate very tight turns (typically 90degree) whilst also cancelling the signal and resignalling whilst also feathering the clutch.

I can try not singalling (not good as oncoming traffic thinks i'm going straight)
I can try just going faster (i'm not super comfortable here, we're talking large potholes, school children, wet manhole covers)

what i've been doing is having the throttle all the way off and coasting round with the clutch out. This works most of the time but is difficult to do smoothly espeically when you are braking into the junction

I thought a rear sprocket with more teeth would be a good idea?
It will reduce my top speed (not really an issue as i'm 99% in the city) but i'm hoping it will raise the revs a bit so slow manuervers are easier.

Has anyone had the same issue?
has anyone installed a larger rear sprocket? what was the effect?
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post #2 of 4 (permalink) Old 03-01-2020, 06:46 PM

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I took the easier/cheaper route and swapped the front sprocket for a 1 tooth lower one - 16 down to 15 I believe. It's similar to roughly going up 2.5 teeth on the rear sprocket and I love the change - much better for what you describe as your challenge.
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post #3 of 4 (permalink) Old 03-01-2020, 10:03 PM Thread Starter
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thanks! I'll do it next service.
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post #4 of 4 (permalink) Old 03-02-2020, 12:47 AM
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I will be dropping to 15 from 16 sometime this month. If that proves to be insufficient then I'll also add one to the rear. But not spoken to anybody yet who's also needed the extra rear tooth.

41:16 = 2,5625
42:16 = 2,625

41:15 = 2,733333333
42:16 = 2.8

Small steps - Day by Day.

Last edited by barbagris; 03-02-2020 at 12:52 AM. Reason: Add numbers
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