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Old 05-26-11, 10:15 AM   #1
hgo17
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too big effort to turn the wheel with a S2C STURMEY ARCHER

Hello,

(I'm french, and you will confirm that my english is so poor...)

I have bought a Sturmey Archer S2C 2-speed Coaster Brake Kick Shift from USA, the hub was integrated in a set of wheels.

Iíve received the set yesterday (9 days from US to France) and I met a serious technical problem :

After installation of sprocket (and the dust cup, the 2 spacers and the circlip), mounting on the bike and first trials : all is running concerning braking and kick shift (1 and 1,38 rates), but the power to turn the wheel is abnormal.

I need too much effort to turn the wheel with the pedals.

The freewheel system seems to be ok (click click click etc. with several tours before to stop alone) but the weight onto the pedal to launch the movement of the wheel is too high like if there is a brake in function inside the hub.
The effort is more or less the double as a standard hub with 1:1 ratio. Never seen that . Really not usable in such situation.

What do you know about this phenomenon? How can I cancel it ?
Somebody can help me ? for the technical issue of course. for my english level : it is too late, i'm so old, but very nervous on my bike too.

thanks in advance,
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Old 05-27-11, 05:47 PM   #2
Dan Burkhart 
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Well, your English is much better than my French, Is it both gears that you have this problem with?
You indicated that you understand about the overdrive gear, but maybe the bike is just geared too fast with a too large chain ring.
What size chainring and cog are you using? 138% is a pretty tall overdrive.
I have one of these hubs in a bike I recently built. No mechanical problems, but the coaster brake makes some pretty disturbing noises.
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Old 05-27-11, 06:42 PM   #3
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Field reports indicate some of these hubs are shipped with very tight cones. Adjusts from the left, takes a 23mm cone wrench.
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Old 05-28-11, 03:10 AM   #4
Dan Burkhart 
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Field reports indicate some of these hubs are shipped with very tight cones. Adjusts from the left, takes a 23mm cone wrench.
Yeah, I've read that too, but the OP says his wheel rotates freely, his words "The freewheel system seems to be ok (click click click etc. with several tours before to stop alone"
Mine did not feel too tight right out of the box either, so I did not have to mess with the adjustment.
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Old 05-31-11, 04:48 AM   #5
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Thanks to you both,

I'm not sure to understand which kind of cone you speak, I suppose it is the two cones locknut which are fixing the axle assembly...I do not see well which effect I can have, I will play with that and see.
I tell you soon.

I'm disapointed by the none answer strategy of Sturmey Archer, after my several emails to Netherlander offices.
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Old 05-31-11, 05:44 AM   #6
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Thanks to you both,

I'm not sure to understand which kind of cone you speak, I suppose it is the two cones locknut which are fixing the axle assembly...I do not see well which effect I can have, I will play with that and see.
I tell you soon.

I'm disapointed by the none answer strategy of Sturmey Archer, after my several emails to Netherlander offices.
Do you have a Facebook account? Sunrace Sturmey Archer is on Facebook, and there has been some discussion of this hub there. Dave from Sunrace pops in when He's not too busy to answer questions as well.
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Old 05-31-11, 06:56 AM   #7
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thanks Dan, I fly to Facebook...

Here is the design of the hub


URL :
http://www.hiboox.fr/go/images-100/i...327ff.jpg.html

Number 8 & number 9, number 1 & number 2 cones ?
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