Brompton Super old SRAM 6 speed

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kabads

Regular
I've got a super old, but much loved Brommie - it has the 6 speed SRAM 13/15 sprockets. I've just changed my chain and want to change my sprocket set (for the first time). I'm looking for a brompton sachs/sram 6-speed sprocket set 13/15 but most places have sold out. Does anyone have any idea of where I could get hold of older parts for a geriatric Brommie?
 

Gunk

Guru
Location
Oxford
There’s a 13 tooth sprocket on eBay, no 15’s though

https://www.ebay.co.uk/itm/264728043025
 

bikegang

Mod before ride, my bike my style...
... I've got a super old, but much loved Brommie - it has the 6 speed SRAM 13/15 sprockets. ....

I think we have ... 13 /14 /15 /18T options for 3 spline hub ( http://bikegang.store/S76YB )
and 12 to 18T for 9 splne (BWR hub)
18T is not guaranteed compatible though.

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98362722_1203383990055457_7386965504235143168_n.jpg
 
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berlinonaut

Veteran
Location
Berlin Germany
There are various versions of 15t 3-spline sprockets available from Sturmey in 1/8" and 2/32": http://www.sturmey-archer.com/en/products/rear-hub-sprockets

SJS has three of them in stock:
https://www.sjscycles.co.uk/sprockets/sturmey-archer-15t-sprocket-332-flat-hsl945/
https://www.sjscycles.co.uk/sprockets/sturmey-archer-15t-sprocket-332-flat-9-spine-hsl913/
https://www.sjscycles.co.uk/sprockets/sturmey-archer-15t-sprocket-18-flat-cp-hsl850/

According to Brompton's tech spec for the SRAM 6-speed the 15t should be 2mm thick "with the arrow facing outwards". Between the 15t and the 13t there's a 2,2mm spacer and the 13t is 3,0mm thick. So in case you are not able to source an according 15t maybe it would be an option to slim down the spacer a tiny bit.
 

Bristolbrommie

New Member
I too have a much love 6-speed scram Brompton and an having trouble finding a 15-tooth socket, the Brompton one is flat the only ones I can find have a built-in spacer lip does any one know if there is anyone still supplying the 15-tooth sprockets as I really do not want to buy a new wheel etc
 
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