Triumphrat

DiabloFormula

I have a 2002 Triumph Daytona 955i CE and stock gearing on it is 18/42. I've discovered the past owner put a 43T rear sprocket in it, I'm thinking of putting a 19T front on to try to get some of that top end back again, the bike is torquey as hell the way it is now so I dont mind losing some of that for some good high RPM pulling on the highway. Any ideas/suggestions on this? Will the engine and the power be happy with this? The bike has a modified airbox with a K&N and TOR carbon can if that helps

sardinecan

If you would rather have the top end gearing and lower RPM's go for it. Not sure if you would need a longer chain though. You could always just go back to a 42T rear, but I'm sure it's more expensive to do so. I always save my gearing change decisions for when it's time for chain/sprocket replacement, but that's just me.

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Romans 10:9-10

DeanRider

I always check out the ratio changes, top speed etc on: http://www.gearingcommander.com/

For reference here are the final ratios: 18/42 = 2.33 // 18/43 = 2.39 // 19/43 = 2.26 // 17/43 = 2.53

2.26 >> More Top End Speed >>
2.53 << Faster Acceleration <<

DiabloFormula

Ya i did that and like what the numbers come out to be, just wasnt sure if anyone had real world experiance with that combo.

DeanRider

To my mind the ratio difference between stock [2.33] and what you have at present [2.39] would be fairly minimal.

bradtx

DF, More than likely your engine can't pull top to redline as it is. A 19T C/S sprocket will make it less likely. The most popular non OEM gearing caters to the strong mid range these engines have; SSSA combos include 18/45, 17/45, 17/43 and 17/42, DSSA combos include 19/46, 18/46 and 18/44.

Brad

02Daytona955i

Will the 18/46 fit with the stock chain?

Thanks

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Hard to know exactly what people mean by 'the real world'. Whatever it is, this is the primo sports bike for it. Plenty of everything and that triple howl! Sept 03 T.W.O.(Triumph Daytona955i)

bradtx

Nope. I think 112 links were ordered and then trimmed to fit.

Brad

Cos_07

If the stock gearing is 18/42 on the SSSA, i'm running 18/44 on mine, stock chain.

02Daytona955i

Ok, thanks Brad.


I've got a 18 front on right now, so I'll go ahead and bust open the 45 rear I ordered last week.

Ahhh, all the little 'problems' we're so lucky to have!

__________________
Hard to know exactly what people mean by 'the real world'. Whatever it is, this is the primo sports bike for it. Plenty of everything and that triple howl! Sept 03 T.W.O.(Triumph Daytona955i)