Technical & Reference Section > Tech and Restoration

Cranks and Chainrings

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kenloen:
tell me, does any chainring fit any crank? I have a Profile Racing 3 piece crank but no chain ring. I like the Tuf neck chainrings but am unsure it they fit (the ones without the spider). Also, how many teeth is good - there are loads avaiable 42,43 44 teeth?? being fitted to a 86 PK Ripper..

cheers Jason.

MartyC:
Yep, any one piece chainring will fit any one piece or cor-moly 3 piece (Redline/Profile/Terrycable, etc) crank however you may need to get a Top-Hat washer to make them fit a 19mm axle, the size of the washer will depend on the chainring as they can vary a little.

http://www.alansbmx.com/product_info.php?cPath=32_34&products_id=2343&osCsid=c189a54cbf1b797680c45c1d7f663a14

Marty  :daumenhoch:

brettypeeps:
Chainrings come in various sizes and most people prefer 44t

Spiders and complete chainrings can come with a 19-23.8mm hole in the centre. Most but not all Redline 3 piece cranks are 19mm but some are 20mm and a standard 1piece crank is 23.8mm. There are adapters to convert a 23.8mm chainwheel to 20mm or 19mm and these are the top hat washer

As for fitting chainrings to spiders they either have a 110mm or 130mm offset so choose the chainwheel to match your spider
Or choose the same make to be sure.  :daumenhoch:

kenloen:
Ah, I know my crank axle is 19mm because I was advised on what BB to buy recently. So if I buy a 1 piece 4 bar chainring I will also need a 22-19mm tophat.. got it.. many thanks..

will hopefully have pics up soon..

john4130:
it wont be a 22-19 tophat  you'll need it'll most likely be a 15/16"-19mm. opc are 15/16" and most old chainrings came in this size to fit them. it wont be hard to find a tophat washer in this size tho.

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