silver-7 Posted January 16, 2005 Share Posted January 16, 2005 Alan at Scholar informs me that the Caterham AP race clutch from the R500 is only capable of around 145lb of torque. I had planned to fit this assemby, but now need to find a clutch & plate suitable for the extra power of the engine. I need an uprated clutch assembly capable of taking about 175Ib torque anyone recommend a suitable set up ??? car has R500 ultralight flywheel and caterhams 6 speed box. cheers ALEX Link to comment Share on other sites More sharing options...
Myles Posted January 16, 2005 Share Posted January 16, 2005 Oooh bunnies. Does Nige know/care about this? Project Scope-Creep is underway... Alcester Racing 7's Equipe - 🙆🏻™ Alcester-Racing-Sevens.com Link to comment Share on other sites More sharing options...
Rob Walker Posted January 16, 2005 Share Posted January 16, 2005 The AP R500 clutch is only rated at 127lb ft torque. However my 1.8K produces 162 lb ft torque and the clutch has lasted two seasons so far. Others with similar power outputs have found the clutch to be durable. Link to comment Share on other sites More sharing options...
Slipper man Posted January 16, 2005 Share Posted January 16, 2005 The latest 'R500' clutch is an evolution of the original R500 item, and is used on the R500 Evo engine. I can't remember the torque of that engine, but given that it is effectively your 1900 with a longer stroke, it has to have more torque, so if it is up to the demands of the Evo I am sure it will work with yours. It has the advantage of feeling like a conventional cutch too, unlike the horrible twin plate things I have tried. You can get it from Caterham (or AP I am sure) Link to comment Share on other sites More sharing options...
silver-7 Posted January 16, 2005 Author Share Posted January 16, 2005 Going to give Caterham a call monday, I brought this clutch direct from them, explained what i needed and was sent the "standard" R500 job just pleased that someone noticed before it was fitted Rob. Its a catch 22 at the moment as i have no real idea of the torque until its rolling roaded, so its a guestimate from Scholar ect would prefure to have one that is over speced as i would hate to have to take the engine out again this year ! Eck. As above i thought i was getting the EVO clutch from caterham, had a chat to AP at the autosport who have given me a contact in their tech dept, but according to there show info they DO NOT make a suitable "road" plate !! why should i avoid a twin plate clutch ? are they to harsh for the road ? I wonder if the R500 evo ran a non AP clutch ???? Am I right isnt Dave Jackson building a 1.9k with a 6 speed box ? cheers Alex Link to comment Share on other sites More sharing options...
tom7 Posted January 16, 2005 Share Posted January 16, 2005 As a Caterham is very light & will tend to spin its wheels without huge provocation, torque is being transmitted to the tyres and then wasted. - This does not put much stress on the clutch. If you are using sliks to do standing starts on a grippy surface, then you need to be aware of where any excess torque will be wasted to - potentially the clutch in this case. You also might want to consider that the gearbox *probably* has a max torque rating below many applications. 😳 Link to comment Share on other sites More sharing options...
Jason Plato Posted January 16, 2005 Share Posted January 16, 2005 Yes I am . I am using the R500 clutch . I reckon it will be fine so long as you pay it a little TLC C7 TOP Powered by Hellier Performance 😬 Now updated Link to comment Share on other sites More sharing options...
V7 SLR Posted January 16, 2005 Share Posted January 16, 2005 Alex, I believe Caterham only sells one AP clutch now. Given that mine has endured a 156lbft engine for 25K miles and is now in such fine fettle that I've given it to Myles to use in his 1.8K engine, I can't see there being any problem with it being mated to a possible 170lbft engine. These clutches are good. The numbers don't tell the whole story. Link to comment Share on other sites More sharing options...
silver-7 Posted January 16, 2005 Author Share Posted January 16, 2005 Ok.... Feed back seems to be that its going to be ok. but..... Ive made note of all of your names just in case !!!!!! cheers Alex Link to comment Share on other sites More sharing options...
Chris__ Posted February 27, 2005 Share Posted February 27, 2005 Hiya. I've dug this one out of the archives as I've got to replace my clutch. Alan at Scholar suggested my clutch might be a 7.5" type Is the clutch described as Competition ClutchCentre Plate(Ford/Rover)Lightweight competition clutch centre plate on the Caterham parts page going to be suitable? My clutch is marked up as AP approved. Here's a photo of it as it, might help as there's a part no? here T'other side: here Thanks. Chris. Link to comment Share on other sites More sharing options...
V7 SLR Posted February 27, 2005 Share Posted February 27, 2005 Chris. Yep. It's the only one Caterham sells now I believe. Link to comment Share on other sites More sharing options...
Chris__ Posted February 28, 2005 Share Posted February 28, 2005 Thanks Nige. Link to comment Share on other sites More sharing options...
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