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PostPosted: Tue Jan 27, 2009 10:43 pm 
Devout Dirtbag

Joined: Mon Jan 22, 2007 3:44 pm
Posts: 138
Location: Kent
Hi,

I would like to fit a single chain ring to my newly shortened cranks for my lad's bike. How do you guys go about fitting just one ring, the bolts I have are too long being designed to go through 2 rings.

Also what size ring on the front to go with an 11-32 rear cassette for a nine year old whippet !

Cheers as ever

Barry


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PostPosted: Tue Jan 27, 2009 10:52 pm 
Lincs, East and South Yorks Deputy AEC
Lincs, East and South Yorks Deputy AEC
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Joined: Fri Feb 29, 2008 11:55 pm
Posts: 5360
Location: GUNNESS NTH LINCS
you can buy shorter nuts n bolts for a single ring,i used a grinder on mine n saved a fiver lol :roll:

regarding chainring size,it depends on type of riding,a bigger ring will be good for gentle rides but if you intent lots of tricky offroad and hills maybe a smaller ring.see what gear hes comfy riding in most the time and work from there

hope this helps


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PostPosted: Tue Jan 27, 2009 10:54 pm 
Retro Guru
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Joined: Sat Jan 19, 2008 11:16 pm
Posts: 3711
Location: #2058
I used spacers for my single ring. Didn't fancy cutting my fingers off with a grinder :twisted:


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PostPosted: Tue Jan 27, 2009 11:22 pm 
Retro Guru
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Joined: Tue Aug 05, 2008 1:10 pm
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Location: Peoples Republic of Scunny
The shorter bolts are for track bikes,they work on any cranks,mentioning the track thing makes them easier to find.


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PostPosted: Tue Jan 27, 2009 11:52 pm 
Retro Guru
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Joined: Tue Aug 07, 2007 12:22 pm
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Location: Platsa, Messinias, Greece
I reckon a 32 tooth chainring would be your best bet, it'll give a low enough gear for some climbing and still be well usable on flatter sections of trail and on the road.


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PostPosted: Wed Jan 28, 2009 12:12 am 
Retro Guru
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Joined: Mon Dec 01, 2008 11:35 pm
Posts: 266
Location: hampshire
these work for me

http://www.sjscycles.co.uk/product-Unbranded-Single-Chainset-Chainring-Bolts--Pack-Of-5-266.htm


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PostPosted: Wed Jan 28, 2009 9:19 am 
MacRetro rider
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Joined: Sat Jan 05, 2008 11:58 pm
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Location: Third stone from the sun.
Andy R wrote:
I reckon a 32 tooth chainring would be your best bet, it'll give a low enough gear for some climbing and still be well usable on flatter sections of trail and on the road.


I'd agree, 32 is what i was using 1x8 on my LTS, had a 12-32 cassette though, 11-32 will give a better turn of speed on the flat bits.

May be a bit of a modern aproach but what about fitting a bash ring or plate in place of the outer ring ?, CRC do some nice ones.


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PostPosted: Wed Jan 28, 2009 10:05 am 
Devout Dirtbag

Joined: Mon Jan 22, 2007 3:44 pm
Posts: 138
Location: Kent
Thanks Guys,

I had thought about turning the bolts down in my mates lathe but it seemed like a bit of a faff if there was something easier.

I'll have a look at a bashplate maybe.

I'm glad that 32 tooth seems to be about right because I happen to have one :)

Promised him we could take the bike out on Saturday afternoon and then remembered all the bits I'd robbed off mine :shock: Got a bike to finish and one to build by Saturday then :?

Thanks one and all

Barry


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