Crankset for Singlespeed Build

Discuss light weight issues concerning mountain bikes & parts.

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Lawfarm
Posts: 30
Joined: Tue Feb 21, 2012 5:16 pm

by Lawfarm

I've been reading and reading, trying to become accustomed to the world of singlespeed MTBs after my recent venture into the arena.

I am confused beyond belief at the crankset options. Spiderless or not, what size BCD, convert a double or triple, etc. I have a bike with a regular english threaded BB. Looking for a 32T chainring. Would like to find a light, inexpensive crankset option...preferably that will work with the 32t chainring and bashguard I have.

Thoughts? Reading materials?

by Weenie


crohnsy
Posts: 439
Joined: Mon Aug 16, 2010 6:43 pm
Location: Canada

by crohnsy

You are over-thinking it... This is not a difficult problem. I think you read too much. What's the BCD of your current chainring? Get a crankset to match.. Decent choices would be Shimano XT, or SRAM X.0 or X.9.

HillRPete
Posts: 2292
Joined: Tue Apr 12, 2011 8:08 am
Location: Pedal Square

by HillRPete

Unless you'll be getting serious airtime on the bike, I think something like the Truvativ Stylo is not too heavy at a fair price.

TheRookie
Posts: 910
Joined: Wed Jan 18, 2012 4:23 pm
Location: Midlands, United Kingdom

by TheRookie

Practically every triple will do the job, just remove the rings and fit your new single specific ring in the middle, bash in the outer and sell your unused rings!

Shimano HT2, Deore through SLX through XT depending on budget, buy used to save even more money.

Unless you KNOW the BB shell has been faced, get it done!
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956

Lawfarm
Posts: 30
Joined: Tue Feb 21, 2012 5:16 pm

by Lawfarm

Thanks, gents.

It's 104BCD, so that means we're probably limited to a triple.

HillRPete
Posts: 2292
Joined: Tue Apr 12, 2011 8:08 am
Location: Pedal Square

by HillRPete

Truvativ Stylo 1.1 has a 104 BCD, as have many other single speed chainsets.

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Juanmoretime
Administrator
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Joined: Sat Jun 19, 2004 11:08 am
Location: Urbana, Illinois

by Juanmoretime

I just use a XT with mine. I picked up a deal on Ebay with bottom bracket and no rings new. Not the lightest but it was cheap and very functional.
RESIDENT GRUMPY OLD MAN.

bm0p700f
in the industry
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Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
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by bm0p700f

I use a old shimano Exage triple with a square taper. That really cheap and surprisingly not that heavy. also the square taper BB last forever.

Bradley
Posts: 53
Joined: Sun Aug 29, 2010 3:10 pm
Location: Southeast England

by Bradley

I'm using a Middleburn RS7 Uno setup with a Raceface Titanium Taperlock Bottom bracket.

Have found Middleburns to be faultless throughout a decade of riding.The Uno setup is really nice too as you can simplify the look of a crankset but losing the spider for a spider mount chainring.

Like this...

http://static.lfgss.com/attachments/579 ... eburn2.jpg" onclick="window.open(this.href);return false;

digit3
Posts: 199
Joined: Mon Nov 17, 2008 10:20 pm
Location: Up North
Contact:

by digit3

Pick up some XT or XTR cranks used via fleaBay, MTBR classifieds, etc. and stick a 104 bcd ring on there (non-ramped) with the correct bolts and you are styling. Be sure to lube those bolts too!

grover
Posts: 1108
Joined: Mon Jul 26, 2004 1:06 pm

by grover

If I were building a single speed now I see only one crankset choice. SRAM XX1. It won't use your 104bcd chainring or bashguard but it will provide the best chain retention possible with the proprietry ring design.

bm0p700f
in the industry
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Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
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by bm0p700f

I even use a standard chainrings on mine and I have never had a chain drop off. Un ramped chainrings make sense if you have to buy new rings but if you have rings and teeth are not super short then use use them.

1spd
Posts: 175
Joined: Fri Jun 15, 2012 2:27 pm
Location: Gaithersburg, Maryland

by 1spd

Picked up a used XTR M960 a couple of years ago. Cut the mounting arms down, removed both large and small rings. Then sent to Shawneebikes and had him work his magic.

!BtYYB3!BGk~$(KGrHqMOKj0Evn9,iu19BL7vp)fNHQ~~_12.jpg


Mounted a custom 32t ring from Homebrewedcompontents (you take your chances if you order anything form the guy now days)
rsz_drivepct20train (2).jpg


Sent it out to have it smoothed out and ceramic coated!

rsz_009_3 (2).jpg


Installed on my current ride: Vassago Jabberwocky

rsz_m960 (2).jpg


Couldn't be happier...well actually, I wish the BCD was a more standard size, 104 vs the 102 as finding rings is somewhat difficult since HBC has become unreliable at best IMO.

Don't over think it! You can covert darn near any crank into SS. If money is an issue then running a Truvativ is fine. Personally, I wouldn't mind trying the new Sram X1 crank (supposed to be for 1x10 set up or something like that) I am thinking it will have some wacked out BCD as well (could be wrong...haven't done any research, just saw a single picture of it once).
Cannondale Synapse (alu)...it works

TheRookie
Posts: 910
Joined: Wed Jan 18, 2012 4:23 pm
Location: Midlands, United Kingdom

by TheRookie

grover wrote:If I were building a single speed now I see only one crankset choice. SRAM XX1. It won't use your 104bcd chainring or bashguard but it will provide the best chain retention possible with the proprietry ring design.

Pointless as chain retention on an SS is just about matching the chain length to distance between centres!

Budget option would be a square taper BB and something like a Stronglight track chainset (which is what I use on my 1x9 commuter) cheap and light.

Otherwise just get any decent chainset and run a single specific ring in the middle or outer (depending on how and where the ring is at the back), my 1x9 MTB is using an XT HT2 with an E13 ring in the middle location.
Image
In my case as it's 1x9 I'm using a bash and guide ring (home made) as chain retention.
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956

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2002maniac
Posts: 205
Joined: Wed Mar 28, 2012 3:16 pm
Location: Utah, USA
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by 2002maniac

crohnsy wrote:You are over-thinking it...


Ditto this. You don't even NEED a SS specific ring.

by Weenie


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