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 Post subject: WTD: Short cranks
PostPosted: Wed Aug 08, 2018 8:47 am 
Retro Guru
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Joined: Sun Feb 08, 2015 8:51 am
Posts: 2581
Location: Macclesfield, Cheshire
Hi all.
I'm after a double or triple crankset / chainset with shorter arms, 155, 160 or 165mm probably OK.
Ideally with rings but without OK.
Matching BB might be useful too if possible.

Used is fine but must be in good order

Cheers! :D


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Aug 10, 2018 9:07 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9424
Location: New Forest, UK
Have you tried Spa Cycles? Their XD cranks are excellent (have bought several 160s for the kids over the years) - and only £25.


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 Post subject: Re:
PostPosted: Fri Aug 10, 2018 9:13 am 
Old School Grand Master
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Joined: Sat Jul 13, 2013 8:01 pm
Posts: 5127
If you want early period correct, you can get a 175mm XT M730 converted into 155mm but its not cheap.


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Aug 10, 2018 9:59 am 
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Joined: Sun Feb 08, 2015 8:51 am
Posts: 2581
Location: Macclesfield, Cheshire
hamster wrote:
Have you tried Spa Cycles? Their XD cranks are excellent (have bought several 160s for the kids over the years) - and only £25.


That, my friend, looks like it might just be the ticket. Many thanks for the pointer :D


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Sep 28, 2018 11:40 am 
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Joined: Sun Feb 08, 2015 8:51 am
Posts: 2581
Location: Macclesfield, Cheshire
I suppose the question I should ask is - compared to a commonly available 170mm crank of which I have some, a 160mm could be expected to shorten the reach by a staggering 10mm.

Is that really going to make a difference? Fat pedals like tripletraps would make up most of the difference on that. and there is no way if a 170/175mm crank is OK for me that a 160mm is going to be right for someone barely a metre tall.

Not sure on the ergonomics of it all - I'm off to do some research - but I suspect I should be looking for something more like 150mm or even less than that perhaps for my youngun, which are not at all common. Well, not if you want something not made of pig iron off a hellfrauds megablast.

Anyone got any leads?


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Sep 28, 2018 12:07 pm 
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Joined: Sun Feb 08, 2015 8:51 am
Posts: 2581
Location: Macclesfield, Cheshire
Maybe there are options...

https://kidsracing.co.uk/products/sinz- ... 6049012799


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Jan 11, 2019 4:52 pm 
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Joined: Sun Feb 08, 2015 8:51 am
Posts: 2581
Location: Macclesfield, Cheshire
So I find a few options for shorter cranks with a square taper fitting, but not a lot with a thru BB for under a squillion pounds. These seem to offer a respectable weight saving, anyone know of a good supply?

And yes, I appreciate I'm asking a site dedicated to the older formats for advice on a more modern format :D


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Jan 11, 2019 7:04 pm 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3402
RickTheUncivil wrote:
Is that really going to make a difference?
Yes, significant. I'm a more normal 175cm with a 83cm inseam, going from 170 to 165 was far better.

RickTheUncivil wrote:
Fat pedals like tripletraps would make up most of the difference on that.
Nope, they'd make exactly no difference at all. The crank length fixes the circle size, pedals just give the whole thing an offset.


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Jan 11, 2019 7:09 pm 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3402
RickTheUncivil wrote:
So I find a few options for shorter cranks with a square taper fitting, but not a lot with a thru BB for under a squillion pounds. These seem to offer a respectable weight saving, anyone know of a good supply?

And yes, I appreciate I'm asking a site dedicated to the older formats for advice on a more modern format :D
*most* modern 2 piece cranks start at 165, i did spot a SRAM one that was available in ~155 a couple of weeks ago, i'll see if i can find it again.

And no, you aren't going to find anything 2 piece for much less than 100 quid, i've just bought an XT 165 1x crank, no rings for 100 quid........ cheapest i've found. Anything further down the range doesn't tend to come in anything other than 170 and 175.


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 Post subject: Re: WTD: Short cranks
PostPosted: Fri Jan 11, 2019 7:15 pm 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3402
SRAM NX 1x crank, comes in 155mm
https://www.sram.com/sram/mountain/prod ... c-crankset

You might have to order it, being an odd length, but they are around 90€ inc an X-Sync ring.

(do you really need a double/triple for a young lad? 1x and a wider range cassette would probably be more practical and less opportunity for "accidents"!)


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