People who provided or shorten cranks in the UK?

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Trikeyohreilly
Posts: 407
Joined: 16 Dec 2010, 6:06pm

People who provided or shorten cranks in the UK?

Postby Trikeyohreilly » 16 Feb 2019, 11:44am

Hi.

I'm going to need a couple of pairs of short or shortened cranks. I have a good lead with a guy in the U. S. but the price is added to quite considerably with postage, Parcel Farce and no doubt import duties.

So before I go ahead and make more serious enquiries I was wondering if anyone had better ideas?

Should is help I'm looking for two tripples starting 22 (20 would be better but not really in our price range) 32 ish, 42-44.

In lengths;

160mm or lower by up to about 10%. Think SJSC can provide at around £120. Not bad I think.

Harder it seems 140mm or slightly lower as above. Initial costings seem to be more like £170 plus for a crankset I can buy at 175mm for £35-40.

We are new to short cranks so any thoughts appreciated.

Thanks

goatwarden
Posts: 694
Joined: 20 Nov 2009, 12:03pm
Location: Bristol

Re: People who provided or shorten cranks in the UK?

Postby goatwarden » 16 Feb 2019, 12:35pm


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interestedcp
Posts: 297
Joined: 5 Jan 2012, 3:34pm

Re: People who provided or shorten cranks in the UK?

Postby interestedcp » 16 Feb 2019, 1:04pm

Here is a 150mm triple for 13 Euro:
https://hollandbikeshop.com/de-de/fahrr ... rz-577345/

The chainrings are probably not very good quality.

The Stronglight Impact Kid Triple Chainset 26/36/46T (130mm-155mm) is probably a better option, but it seems to be out of production. Their double is widely available.

Just found this chainset too; SR-Suntour XCT JR T202 152mm 22-32-42
https://www.bikes24.co.uk/sr-suntour-xc ... black.html
There is also the Suntour RBR604. Haven't seen any under 150mm though.

Thorn seems to have 140mm triple cranks at £69.99 without chainrings:
https://www.sjscycles.co.uk/cranks/140- ... et-silver/
There is also a 125mm version, not sure if it is a triple or not:
https://www.sjscycles.co.uk/cranks/thor ... et-silver/

There is also Pedalkraft (German): http://www.pedalkraft.de/kurbeln.htm
--
Regards

rjb
Posts: 3400
Joined: 11 Jan 2007, 10:25am
Location: Somerset (originally 60/70's Plymouth)

Re: People who provided or shorten cranks in the UK?

Postby rjb » 16 Feb 2019, 1:08pm

Flebay is your friend. 150mm triple for about £20. https://rover.ebay.com/rover/0/0/0?mpre ... 3067942847
:wink:
At the last count:- Focus Variado, Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin, Raleigh 20, Falcon K2 MTB dropped bar tourer, Longstaff trike conversion on a Falcon corsa. :D

Brucey
Posts: 35563
Joined: 4 Jan 2012, 6:25pm

Re: People who provided or shorten cranks in the UK?

Postby Brucey » 16 Feb 2019, 2:37pm

Mike Burrows (Mike Burrows engineering) will shorten cranks. He is in Norwich.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

hercule
Posts: 965
Joined: 5 Feb 2011, 5:18pm

Re: People who provided or shorten cranks in the UK?

Postby hercule » 17 Feb 2019, 2:05pm

SJS’s own Thorn cranks are good, look well made... I have a pair in 145mm. Other options are Lasco brand cranks in 152mm as used on ICE recumbent trikes. They seem good to, but not as polished and well finished as the Thorns.

When I switched to short cranks I followed Sheldon’s advice on gain ratios and shrunk the chainrings by the same amount. I had some misgivings about an apparently lower top gear though I more than make up for it it faster cadence.

https://www.sheldonbrown.com/gain.html

fastpedaller
Posts: 2072
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: People who provided or shorten cranks in the UK?

Postby fastpedaller » 17 Feb 2019, 8:07pm

Spa Cycles Impact kids cranks down to 130mm £38 but 110bcd so may not be useful?

UpWrong
Posts: 803
Joined: 31 May 2009, 12:16pm
Location: Portsmouth, Hampshire

Re: People who provided or shorten cranks in the UK?

Postby UpWrong » 18 Feb 2019, 11:40pm

The Spa XD-2 goes down to 160mm. £25 without rings. £5 for bolts to match.

Bowedw
Posts: 268
Joined: 22 Feb 2011, 10:26pm

Re: People who provided or shorten cranks in the UK?

Postby Bowedw » 19 Feb 2019, 6:00am

Highpath Engineering will shorten a chainset but any frame builder worth his salt should be able to as well. Most small engineering companies should be capable as well. Not cheap though, I had some done a couple of years ago and cost £40 to shorten a Spa cycles chainset. This gave me the option to buy chainrings to my choice.

9494arnold
Posts: 842
Joined: 21 Jan 2007, 3:13pm

Re: People who provided or shorten cranks in the UK?

Postby 9494arnold » 19 Feb 2019, 9:22am

Have you seen the 'Kiddy Cranks" in the For Sale section? :)

pwa
Posts: 10240
Joined: 2 Oct 2011, 8:55pm

Re: People who provided or shorten cranks in the UK?

Postby pwa » 19 Feb 2019, 9:32am

UpWrong wrote:The Spa XD-2 goes down to 160mm. £25 without rings. £5 for bolts to match.

That would be my route. My wife (about 5'2") uses the 160mm and it seems the right size for her.

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squeaker
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Joined: 12 Jan 2007, 11:43pm
Location: Sussex

Re: People who provided or shorten cranks in the UK?

Postby squeaker » 19 Feb 2019, 9:59am

Brucey wrote:Mike Burrows (Mike Burrows engineering) will shorten cranks. He is in Norwich.

cheers
Cost me less than £30 IIRC for the last pair.
"42"

recumbentpanda
Posts: 217
Joined: 6 Apr 2009, 12:13pm

Re: People who provided or shorten cranks in the UK?

Postby recumbentpanda » 19 Feb 2019, 8:45pm

Sugino make nice old school triples in a range of crank lengths. Have to import from US suppliers via eBay. Shop around, not cheap but not out of the ordinary prices for good quality parts.

Trikeyohreilly
Posts: 407
Joined: 16 Dec 2010, 6:06pm

Re: People who provided or shorten cranks in the UK?

Postby Trikeyohreilly » 26 Feb 2019, 8:13pm

Thanks very much to all for the great information.

The larger size cranks are sorted for now but I'm not sure the inner ring will prove small enough in the long term.

Shortening seems to be the way to go for the smaller cranks. Highpath seem a little hard to work with only in as much as I need to buy/borrow a printer to complete an order and has too long a lead time. US seems to be better for that so far though not sure.

I didnt want to bother Mr Burrows but think I'll try as it seems crazy to order from abroad.

There were also some new posts I shall be investigating.

Thanks again to all.