Shun Alloy 104 BCD 4-Arm Freewheeling Cranks - 170 mm - Silver
£64.99
was
£64.99
was
Manufacturer :
SJS Cycles part number :
Manufacturer part number :
Details
We stock this for tandems (although there may well be other applications), this can only be used on tandems with hub gears and straight through drive, allows the rider (front or rear or both) to independently freewheel. Requires a very long bottom bracket, when fitted to a Thorn Raven Twin tandem (these use 73mm bottom bracket shells) the only bracket we've found to use is a cup and cone type. Bracket, item # 22175, cups item # 22176. Please note, this adaption is a great low cost improvised solution to allow people who may otherwise not still be able to cycle to get out on a bike.
- Freewheeling crank is on the RIGHT side - only suitable for 'Through-drive' (timing chain on right side of bike). Therefore best suited to tandems running hub gears.
- Fits JIS taper bottom brackets, it takes 9/16" pedals.
- Single or double chainring set up, not suitable for triple.
- Weight: 760g
- Freewheeling crank is on the RIGHT side - only suitable for 'Through-drive' (timing chain on right side of bike). Therefore best suited to tandems running hub gears.
- Fits JIS taper bottom brackets, it takes 9/16" pedals.
- Single or double chainring set up, not suitable for triple.
- Weight: 760g
Specification
Downloads
Download File
Questions & Answers (5)
Is the thread for the freewheel a standard 1.37" 24 TPI?
By Bob Bending
04 Mar 2023
SJS Customer Service:
Yes the chain set is a standard Freewheel thread, but uses it's own freewheel allowing attachment of the spider. SK 06/03/23
ss-7002-f4
By kris
01 Mar 2019
Hello
i'm interested in a double freewheel for tandem.
Do you have more than 2 of these in stock? Do you send products to belgium?
thanks
Kris
i'm interested in a double freewheel for tandem.
Do you have more than 2 of these in stock? Do you send products to belgium?
thanks
Kris
SJS Customer Service:
We currently have 2 in stock, with a large delivery due in April. Please contact our sales team directly if you wish to pre order some!
Thanks - 01/03/19
Thanks - 01/03/19
26T chainwheel to match?
By Mick
19 May 2018
Hi, I'm wanting to fit this to an early (steel framed) Hase Pino to replace the original stoker freewheel crank. Do you have a 26T chainring that would fit? Incidentally, is it always recommended that the pilot/stoker drive ratio be 1:1 or might using, say, a 28 and 26 in combination be ok? Cheers
SJS Customer Service:
Hi there,
The BCD is 104mm, the smallest chainring we do is 30t so you would need to source a 26t or change both to slightly larger sizes.
Thanks
The BCD is 104mm, the smallest chainring we do is 30t so you would need to source a 26t or change both to slightly larger sizes.
Thanks
Is this freewheel crankset compatible with this kiddy crank?
By Stan
22 Mar 2018
See https://www.sjscycles.co.uk/componentstandem-specific-parts/kiddy-crank-seat-tube-attachment-block-286mm-black/
The tandem in question will have a Rohloff fitted to it and is a full size adult-adult tandem.
The tandem in question will have a Rohloff fitted to it and is a full size adult-adult tandem.
SJS Customer Service:
Hi there,
Yes this will be suitable, if you change the BB on the Kiddy crank attachment.
Thanks
Yes this will be suitable, if you change the BB on the Kiddy crank attachment.
Thanks
Crank shortening
By David Schofield
06 Mar 2018
Hi
I want to get these shortened to 120 or 125mm
Please can you tell me the crank thickness at say 125mm.
Many thanks
I want to get these shortened to 120 or 125mm
Please can you tell me the crank thickness at say 125mm.
Many thanks
SJS Customer Service:
Hi
Thank you for your enquiry, at the 125mm point the crank thickness is approximately 13.5mm.
Kind Regards
Thank you for your enquiry, at the 125mm point the crank thickness is approximately 13.5mm.
Kind Regards