sprocket

We also discussed the need to actively manage regen braking to avoid vehicle instability in slippery conditions.

Hi, Same problem with a 2012 140hp Supersport. I was advised by someone who'd built a Blackbird powered 7 which had a ridiculously light throttle spring to increase the spring tension. I added another coil spring to the top of the throttle pedal and bingo, it reduced the kangarooing quite a bit. It's still there which you have to manage but it's much improved.

I want to change from Tillets to leather seats in my S3. Anyone interested in a swap?

Thanks everyone for your interest. Mine is now sold.

Hi Orange, I'm not sure what constitutes old or new buckle but the one photographed is the one I have for sale. Cheers

Hi nickh7, Sorry for tardy response. Are you still interested? BTW, I haven't received an email so am not sure what's happened there. Thanks for your interest.

Luke Racing System. Left hand side, black belts, red buckle. Supplied by Caterham for 2012 S3 but unused and still boxed with all fixings and fitting instruction. £75 plus delivery cost.

Thanks all for your input. I now understand that this requires a full manual set up for the timing so will consider whether to do this myself during the winter or get someone else to do it. Cheers

Thanks for the recommendation for PP but I've changed a couple on regular tin tops and fancy the challenge of doing my own if I can.

Hi all, I'm about to change the cam belt on a 1.6L Sigma in a 140 Supersport and have heard that the standard Ford camshaft locking tools are not suitable due to different timing.Can anyone who's done this job offer any words of wisdom? Many thanks

Job done. Popping the seal out with the chisel end of a crowbar as suggested by Mike Cocker was a doddle. Tapping the new one in was straight forward and I used a large diameter drift so the the hammer was never close to the seal itself. The hard part was undoing the diff housing filler plug which Caterham had kindly tightened to about 6,000,000 Nm. Well, nearly that number. Went to the club monthly meeting last night and not a drop of oil on the garage floor today. Thanks for your advise.

Thanks for the advice team. I'll swallow a brave pill and give it a go tomorrow. Cheers.

Image of offending seal.

Hi, has anyone out there changed a driveshaft seal on a BMW LSD as fitted to a 2012 Supersport? When I searched on line the side seal housing appeared to be bolted on but my seal just seems to be pushed into the machined diff housing. I could do with anyone's prior knowledge before I attack mine. Thanks,

Hi Mucus72. Sorry to hear that you also suffer the dreaded CLUNK. There are many potential sources of backlash (free play) within any driveline but a Caterham with BMW LSD seems to have excessive backlash that results in an audible clunk either when you pull away or most noticeably during torque reversal (power on/off/on). There is potentially noise due to the limited slip mechanism but this shouldn’t be noticeable in low torque, straight line conditions. I believe that in my car the biggest culprit is the half shaft spline that plugs into the diff which has at least 60% more backlash than the BMW equivalent stub shaft. I therefore get a huge mechanical clunk as the free play is taken up during torque reversal. My guess is that your car has the same problem. The diff is very firmly mounted in a Seven so any noise is transmitted into the chassis and in the case of a Supersport with no carpets, straight into my ear. I’ve no idea what to do about this other than trying to change to BMW type Rzeppa half shaft joints so that I could use the BMW stub shafts but this would not be simple. Maybe the answer is to install very loud headphones connected to the exhaust and just enjoy the drive. :-) Hope this makes sense