Gearing Up (or down) 401

Yes, the inner holes are all offset with the center of the countersink for the nuts by exactly 1.225 on the rotational axis.

If i were to comment, I would say this increases the longevity of the sprocket should the incorrect torque be applied to the nuts resulting in elongation of the bolt holes under high wheel torque situations.
So technically, the manufacturing the tolerance might be a +/- 1mm and specifeid to +2mm/-0mm from countersink center resulting always in a positive offset.

Speculation aside, I would note that the manufacturing quality of the KTM sprocket (or whomever makes it for KTM) is better than most.
 

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From what Ive gathered the RFA ones are disigned to work with the aluminum disc in order to make it look like a stealth, and the RFE are not.

The surface looks completely different in your pic than the one I have here:

20210316_195006.jpg20210316_194504.jpg
 
Yeah, that is definitely a different surface finish than this one.
PXL_20210316_185616786.jpg

I don't like the shape of it... I think I will return it and get something else.
 
Yeah, the rear from driven is for sure nice.
Without having fully tested it, the driven front definately makes a good first impression.

Here is a few fronts next to each other:

20210316_203828.jpg
 
BISavage said:
Superlite is made by Afam.
Very light, but still 10% heavier than the Diamond cut Esjot.
Click to expand...
Is the USA Drive Systems Superlite the same as the EU AFAM product? I couldn't find photographs of the EU AFAM product that looked like the USA Dive Systems Superlite one. And AFAM seems to have broken off with the USA distributor a couple years ago.
 
Vintage Veloce said:
Is the USA Drive Systems Superlite the same as the EU AFAM product? I couldn't find photographs of the EU AFAM product that looked like the USA Dive Systems Superlite one. And AFAM seems to have broken off with the USA distributor a couple years ago.
Click to expand...

Could be.
My statement could also have been more correct like this: Superlite and Afam are part of the same company.


20210317_071024.jpg
 
One topic in this Gearing thread that hasn't really been touched is the effects to the bikes handling due to a gearing change.
1. Different rotational mass makes more or less centrifugal force which will impact the bikes willingness to lean and the rate of rear wheel acceleration / deceleration.
2. Different wheelbase due to different sprocket size and/or chain length will change the length of the swingarm - the lever applied to the rear shock, the turning radius, and the willingness to turn.
3. Different weight of chain and/or sprockets will change the grip on the road and power / braking efficiency.

These effects may be marginal in the real world, but no less trivial than proper suspension setings or tire pressures.

When comparing 2 setups with the same ratio, a 14/42 with motorcrocs chain and lightweight sprockets, vs. a 15/45 with regular chain and silent sprockets, the gear ratio about the same.
You end up with difference of 3/4" wheel base and 3 lbs.; 1.4% and 0.9%, respectively, of the whole bike.
 
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