These two combinations are almost identical, but even with a combination that IS identical, could there be some differences at high speed?
For example, would the 14 front resuce revs at 100km/h or not.
Aain, this is for a combination that is identical say around 4:1
Jusy trying to work out what is better for the engine
The option is the same for performance - it depends entirely what your preference is.
In my opinion I would sooner give the chain and the gearbox sprocket an easier life, therefore I opted for the 14/52 set up. (Mine currently is 14/52 dontyouknow)
When I bought my TTR it was 13/48 and in just over 16 months the 13 tooth gearbox sprocket was hooking.
In another 14 months I will be in a position to report on the 14 tooth gearbox sprocket's condition. Bur I won't worry until then.
"Could there be a difference at high speed?" you ask - if I want high speed then I use my Bandit. (Not on the lanes though)
yeah i understand about the bandit, i have a ducati for high speed also. im wondering if something with the same ratio would have lower rpm with a bigger front sprocket. thats all.
so, same ratio, just different way of getting it. is there a difference in revs, or just in numbers.
I can't see how 13 48 would give a noticeably different performance to 14 52. I think they'd be the same and it will come down to personal preference. The counter argument to the front 14 tooth sprocket is that a 13 will grind both itself and the chain less against the crud trapped up near it, and the smaller rear 48 will give (admittedly very slightly) better clearance from rocks etc. Plus you don't have to alter the rear guard at all.
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Pete Brown
Keighley, West Yorkshire
'94 Yamaha TTR 250 Raid (with Open Enduro headlight, grrr...)
I ran a 13/48 for many years and through ignorance/neglect failed to notice that the chain slider had worn therefore damaging the s/arm seal and the s/arm itself.So it was s/arm off for repair and new bearings and seals and a new chain slider.I now run a 14/48 to give the slider a better chance,i manage quite well with this setup.
