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Singlespeed chainri...
 

[Closed] Singlespeed chainrings

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[#3758689]

The drivechain on my Vitus Vee-1 is getting quite tired, just wondering what combination of BB/Crank Arms/Chainring I can go for.

What's the difference between singlespeed and geared chainrings? Will I be ok with a 9sp compatible chainring on a singlespeed?

EDIT: 42t rings, so slightly different from the usual MTB sizes.


 
Posted : 09/03/2012 7:32 pm
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singlespeed chainrings often have longer teeth and not ramps or pins that are normally there to aid shifting.

Common option is to get a cheap set of cranks and replace the rings. But dedicated ones are available.

IF you want somewhere to start looking then try on-one, velo solo or charlie the bikemonger.

FWIW on my two singlespeed bikes both run a standard 104 bcd shimano crank. One has a standard 32t front ring (on-one) and the other a more manly 48t ring* (TA from sjs cycles).

16 at the back, used on the road for commuting.


 
Posted : 09/03/2012 9:00 pm
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I use a 9 speed TA ring on my saint cranks in the middle position with 1/8" chain on one of my SS and I have no issues. No guides or tensioners either and yes it has vertical dropouts. 34:16T on 26x2.3" tyres.

The other single speed uses an 8 speed middleburn chain ring with a 3/32" chain again no guide/tensioner nonsence, vertical dropouts and flawless perforance. Even older Shimano triple cranks on this one. 36:18T on 26x1.7" tyres this bike is meant for mudplugging.


 
Posted : 09/03/2012 9:09 pm
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If you are buying new rings you might as well buy SS rings though but if you are buying a second set of cranks that come with decent rings then use those if that works.


 
Posted : 09/03/2012 9:11 pm
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If you want the SS exclusive look then Middleburn gets my vote. I use RS7 cranks fitted with an uno 36T 3/32 chainring. The frame has vertical drop outs and an EBB so no need for a chain tensioner. The BB is iso and I did have a problem with wearing out standard bb bearings within a few months. Now use a SKF iso bb, which has been fitted for 2 years! This setup looks the dogs as the frame has no mech hanger or gear cable guides either. Rigid fork as well, obviously. I run a 18T cog for xc (2:1 ratio) and a 12T for commuting (3:1 ratio).

One is all you need!


 
Posted : 09/03/2012 9:33 pm