scooter Posted July 13, 2007 Share Posted July 13, 2007 Can the standard rack be adapted to 'quick' rack status and if so, who can do the job? Link to comment Share on other sites More sharing options...
scooter Posted July 16, 2007 Author Share Posted July 16, 2007 If anyone's interested it's Titan, and no - they can't fiddle about with our racks as (like everything else Caterham) you've got to deal with the factory! And... Caterham only supply complete racks! Fair enough - they own the drawings, etc., but please at least have the foresight to ensure that component parts can be supplied so there's no wastage! Link to comment Share on other sites More sharing options...
scooter Posted July 16, 2007 Author Share Posted July 16, 2007 Also, is there any way you can tell 'what' rack you have just be looking at it (mine's out of the car, so turning the wheel is no use!). Mine was from a 2001 Narrow De-Dion and has CATERHAM in raised lettering on the top. Link to comment Share on other sites More sharing options...
Irrelevant Posted July 16, 2007 Share Posted July 16, 2007 You can tell the ratio . . . just turn the input shaft...For a 'Caterham' rack, if you get less than 2 rotations it's a quick rack (c.1.7 rotations IIRC) if you get more than 2 it's a standard rack (c.2.2. turns IIRC). The old mini rack is obviously not the Caterham/Titan rack and will give even more turns - something stupid like 2.6 or more IIRC. Link to comment Share on other sites More sharing options...
Peter Carmichael Posted July 16, 2007 Share Posted July 16, 2007 You can count the number of turns of the input shaft to achieve lock to lock movement. The 8% (standard for a good many years now) is 2.25 turns lock to lock. The 22% quick rack is 1.75 turns lock to lock. The casing colour also denotes ratio and track. i.e. ( I may have these wrong) Green - widetrack 8% Black - 8% Silver - 22% FWIW, I run a green rack with a 22% pinion pilfered from a silver rack, so thanks to people like me the colours thing is no longer 100% accurate. Link to comment Share on other sites More sharing options...
Irrelevant Posted July 16, 2007 Share Posted July 16, 2007 I wouldn't trust the case colour . . . I have a black 22% narrow rack now. Previously I had a silver 22% narrow rack. My chum has a black 22% narrow rack. I've also seen green SV and standard racks - colour seems a total lottery TBH. Link to comment Share on other sites More sharing options...
Nick Green Posted July 16, 2007 Share Posted July 16, 2007 I've got a green-cased rack on a widetrack, new in 1999. It is less than two turns lock to lock. ISTR the 8% being 1.9 turns and the 22% being 1.7 turns ? Or did I just get lucky with a 22% rack ? Link to comment Share on other sites More sharing options...
Peter Carmichael Posted July 16, 2007 Share Posted July 16, 2007 8% in my experience is definitely more than two turns lock to lock. 22% is definitely 1.75. Link to comment Share on other sites More sharing options...
mav Posted July 16, 2007 Share Posted July 16, 2007 Std SV rack (8% or there abouts) silver casing. 1.9 turns lock to lock. Link to comment Share on other sites More sharing options...
Irrelevant Posted July 16, 2007 Share Posted July 16, 2007 I was talking about narrow racks for cycle winged cars. I assumed widetrack S3 racks would be the same. SV, CSR, & flared racks are quite possibly different but as I'd never consider any of these, info on their steering will have gone in one ear and out the other . Link to comment Share on other sites More sharing options...
scooter Posted July 16, 2007 Author Share Posted July 16, 2007 Right... so mine is a Black Rack and it is 1.85(ish) lock to lock! What's the final verdict - is this an 8% or a 22%? If it's an 8%, is the 22% all that much quicker? Link to comment Share on other sites More sharing options...
Peter Carmichael Posted July 16, 2007 Share Posted July 16, 2007 Take the pinion out and count the teeth. Link to comment Share on other sites More sharing options...
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