CageyH Posted April 7, 2007 Share Posted April 7, 2007 This has probably been done before, but should I gpo for a Quaiffe, a ZF, A Kaaz, a Tran-X. Use will be mainly road, but the intention is to sprint in the near future, so kerb hopping may happen. Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
CageyH Posted April 7, 2007 Author Share Posted April 7, 2007 And what ramp angles are required, and what preload is recommended? Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted April 7, 2007 Area Representative Share Posted April 7, 2007 ZF diffs are set by R&R to have 30° ramps and 30-45ft/lbs preload. Link to comment Share on other sites More sharing options...
rj Posted April 7, 2007 Share Posted April 7, 2007 ZF works very well on mine Link to comment Share on other sites More sharing options...
paul jacobs Posted April 7, 2007 Share Posted April 7, 2007 I've got one of the CC lsd, which I'm sure comes from Road & Race. Frankly, it's so good that I wouldn't even know it was on the car, in normal road use. No trans. backlash or shunt, quiet and no push on understeer. It just works - great. Thoroughly recomended. Around £750 I think. Paul J. Loud pipes save lives, but quiet ones save your hearing. Link to comment Share on other sites More sharing options...
Peter Carmichael Posted April 7, 2007 Share Posted April 7, 2007 The CC supplied ones need to go to R&R to be altered to the spec mentioned above. Some people never get them to work properly in standard form. You can check the preload easily enough jacking up a rear wheel and using a torque wrench. Standard are usually 60lbft preload which is usually enough to make a Caterham push straight on. (Paul, If you've got one that works, I'm not suggesting you alter it.) Link to comment Share on other sites More sharing options...
paul jacobs Posted April 8, 2007 Share Posted April 8, 2007 I think that Phil Stewart has already worked his magic on it Peter, which is why it works so well Paul J. Loud pipes save lives, but quiet ones save your hearing. Link to comment Share on other sites More sharing options...
Lennie Posted April 8, 2007 Share Posted April 8, 2007 CageyH If you want any advice on the Quaife ATB ring and ask for me and I may also be able to get a discount. Link to comment Share on other sites More sharing options...
MikeE Posted April 8, 2007 Share Posted April 8, 2007 For a Numpty can someone go back to basics on this as I overheard a coversation at a trackday about the LSD possibly contributing to understeer while I was a Bedford autodrome last Friday - suffering from very frustrating amounts of understeer I have whatever diff was supplied with a 2004 R400 - it seems to suffer from high speed (80mph+) understeer even after trying various damper settings (Nitrons), front roll bar settings (Freestyle adjustable) and tyre pressure combinations - is it the lsd that maybe contributing to this under power and is so what do I need to do to dial it out? R400 Duratec Build and Modification Pictures here Link to comment Share on other sites More sharing options...
Myles Posted April 8, 2007 Share Posted April 8, 2007 Well yes, 'of course' it's contributing to understeer. The whole point of a 'free' diff is to allow the two driven-wheels to rotate at different speeds as you corner. Your LSD is resisting this - it wants to go in a straight-ish line - hence the understeer. Having had some recent (and virgin) autotest experience in an LSD 7, perhaps some investigation into weight-transfer and application of the right-foot might suffice... 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 Alcester Racing 7s Equipe™ 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 Alcester-Racing-Sevens.com Link to comment Share on other sites More sharing options...
7 wonders of the world Posted April 9, 2007 Share Posted April 9, 2007 Tran-X 25lb preload and 30 / 90 ramps *thumbup* speak to Dan he'll offer a discount too Too young to be old ! Link to comment Share on other sites More sharing options...
mav Posted April 9, 2007 Share Posted April 9, 2007 Cagey, speak to Phil at R&RT. He will talk you through the options, and gives advise quite happily. Link to comment Share on other sites More sharing options...
Iain A Posted April 9, 2007 Share Posted April 9, 2007 I put a Quaife ATB in my 220 bhp car and it is fantastic.. suggest you talk to Len if he can get you a discount.. make sure you get the 7 spec one.. though I know Len will keep you right. One of the Duratectives Link to comment Share on other sites More sharing options...
RiF Posted April 9, 2007 Share Posted April 9, 2007 From what I have heard the Quaife LSD is the way to now go!!!! RiF Flying even faster in my very bright yellow 226bhp Duratec 7, with internal kevlar/carbon panels and pushrod suspension 😬 😬 😬.for pictures of 7 and carbon Edited by - RiF on 10 Apr 2007 13:13:08 Edited by - RiF on 10 Apr 2007 13:26:15 Link to comment Share on other sites More sharing options...
CageyH Posted April 9, 2007 Author Share Posted April 9, 2007 I thought Quaiffe were a no no if you intended to use the car on track, due to kerb hopping etc. Has this changed? Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
GTD Posted April 10, 2007 Share Posted April 10, 2007 I thought Quaiffe were a no no if you intended to use the car on track, due to kerb hopping etc That's what Phil told me! But then ZF diffs seem to have become unavailable anyway! 😔 Edited to add that I've been on a R & R 'waiting list' for months now! I'll be interested in other opinions!! G for Geoff here Edited by - GTD on 10 Apr 2007 12:59:16 Link to comment Share on other sites More sharing options...
neil.cavanagh Posted April 10, 2007 Share Posted April 10, 2007 I've had a quaiffe in my SV for about a year now. It works good. No extra noise or driveline shunt and was both cheaper than a ZF, and available! I can't really comment on reliablility or ability to handle big power as I dont' curb hop much on track (explains my slow times in the sprint series maybe) and I've only had 140bhp up to now. But.. I belive an RST V8 is running a quiaffe with no problems... Link to comment Share on other sites More sharing options...
Hanns Per Posted April 11, 2007 Share Posted April 11, 2007 from what I know what was previously ZF now is: Drexler rgds Hanns Per more about my CSR on my homepage Caterham CSR Hanns Per KOBER blatting the alps in a CSR 200 Link to comment Share on other sites More sharing options...
Hanns Per Posted April 11, 2007 Share Posted April 11, 2007 to more correct Drexler LSD Hanns Per Hanns Per KOBER blatting the alps in a CSR 200 Link to comment Share on other sites More sharing options...
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