Single speed conversion - London Fixed-gear and Single-speed

jcl · 10th October 2007

hi all
apologies as this has sort of been covered in another thread but wanted to make sure...
i am looking to convert my 1970s peugeot 12 speed to single speed. is it possible to use one of the sprockets in the existing cassette and use some old spacers or should i get one of these...

http://cgi.ebay.co.uk/SINGLE-SPEED-ACS-sprocket-freewheel-cog-hub-16T-BMX_W0QQitemZ290168075799QQihZ019QQcategoryZ42328Q QrdZ1QQssPageNameZWD1VQQcmdZViewItem

cheers

dogsballs · 11th October 2007

that won't fit ;) , just pull apart cassette and pick which one you wants and fill the rest of the space with spacers

provenrad · 11th October 2007

IT depends whether you have (a) a modern cassette hub (as you say you do), where the cogs all fit on a splined body and held with a lockring OR (b) a threaded freewheel, where the freewheel mechanism and cogs are one unit that screws onto the hub. (original 1970s parts means you are (b))
If (a) - use a cog and spacers, (b) - screw-on freewheel (ACS / Shimano) will solve your problems.
http://www.sheldonbrown.com/singlespeed.html#freewheelhub

TheBrick(Tommy) · 11th October 2007

At a guess it would be more likely to be a freewheel if it is a 70s bike unless the rear wheel has been replaced. If it is a freewheel you can just replace it with the bmx freewheel you posted but you will prob have to redish your wheel to get the chainline correct. Good luck.

jcl · 12th October 2007

thanks very much guys, much appreciated.

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10th October 2007	#1
jcl	hi all apologies as this has sort of been covered in another thread but wanted to make sure... i am looking to convert my 1970s peugeot 12 speed to single speed. is it possible to use one of the sprockets in the existing cassette and use some old spacers or should i get one of these... http://cgi.ebay.co.uk/SINGLE-SPEED-ACS-sprocket-freewheel-cog-hub-16T-BMX_W0QQitemZ290168075799QQihZ019QQcategoryZ42328Q QrdZ1QQssPageNameZWD1VQQcmdZViewItem cheers
	quote reply

11th October 2007	#2
dogsballs	that won't fit ;) , just pull apart cassette and pick which one you wants and fill the rest of the space with spacers
	quote reply

11th October 2007	#3
provenrad	IT depends whether you have (a) a modern cassette hub (as you say you do), where the cogs all fit on a splined body and held with a lockring OR (b) a threaded freewheel, where the freewheel mechanism and cogs are one unit that screws onto the hub. (original 1970s parts means you are (b)) If (a) - use a cog and spacers, (b) - screw-on freewheel (ACS / Shimano) will solve your problems. http://www.sheldonbrown.com/singlespeed.html#freewheelhub
	quote reply

11th October 2007	#4
TheBrick(Tommy)	At a guess it would be more likely to be a freewheel if it is a 70s bike unless the rear wheel has been replaced. If it is a freewheel you can just replace it with the bmx freewheel you posted but you will prob have to redish your wheel to get the chainline correct. Good luck.
	quote reply

12th October 2007	#5
jcl	thanks very much guys, much appreciated.
	quote reply

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