CB

the dimensions I had at the time were 43 teeth internal dia. 73mm outer dia. 93mm But those come with absolutely no warranty at all - so use at your own risk...

I ended up getting one second hand. Whilst I was looking though, these guys https://exmol.com/ said they would be able to make one up. At the time the cost would have been £120 ex vat for 1, £75 each for 2, dropping via several steps to to £40 each for more than 10.

I've raced like that and it's been fine. It will depend on how soft the suspension is though (i.e. how much roll you get)

as per the subject. The car is 2012 vintage.

The CANbus was definitely silent when it was watched passively (it caused much headscratching). When we got the CANalyzser to make some noise on the bus, then we got RPM back, but only RPM - the conclusion seemed to be that the ECU seemed be working on a "if there is no one else on the bus to receive it, why would I send data" basis. If you get any more than that, I would be very interested in how...

A while back one of the data logging hardware manufacturers attached a CANalyzer to my car (2012 Sigma) in order to work out what info was being published to the bus. The answer was nothing, unless another live device was on the bus too (we turned acknowledgement on to see that), in which case the answer was RPM only. If, however, you used the MBE cable to the OBDC socket and the MBE software, then there was rather a lot of data covering all sorts of useful stuff. It may be that the MBE isn't using CAN for that? Or requires it to be explicitly queried?

From my experience it isn't about the quality of the surface on track vs road, it is more that race cars have their pads changed far more often than road cars and so the solid pipe ends up getting a lot more abuse just from that. Not so many years ago (I don't know what happens now) Academy car kits came with solid rear pipes and that was what you raced with but at least one other series made the use of flexi pipes mandatory so if you changed series an upgrade was required.

I've probably got an original SBFS one somewhere if you are interested? I'd have to work out where I've put it though...

I need a new reluctor ring (the toothed wheel on the RHS drive shaft that the speedo sensor reads from). Anyone : 1) got one spare 2) got a drive shaft with one on I can have 3) know where I can get one Chris

I am looking for a good condition tunnel top to fit a metric S3 car

out of interest, which are the "standard" ones you actually have to race with?

loads of us race on standard brakes and fade isn't a problem I've heard complained about much at all. I would definitely look at your pad selection before spending money on a new brake system

AO48 - to me seemed far grippier in the dry (but still progressive), and a real handful in the wet (compared to CR500)

Charles - a couple of us in Grads Sigmas have the W1i so you are welcome to take a look. Great seat...

According to Caterham the high effort pedal was designed for the old chassis but fits with some "fettling" (I got one of the teams to do mine). Why they can't update it to directly fit the chassis they have been selling for years is somewhat beyond me.... Edited by - CB on 5 Jul 2014 11:14:31