Shortshift

No, unfortunately the CSR offset is unique so these won't fit any other Caterham. James

Looks like something of a bargain to me! CSR front rims are virtually impossible to find... Good luck with the sale, Neil. James

Replying to #1 "What is 'positive' clearance?" Anything greater than 0mm clearance between the top of the helmet and the defined plane. James

Coming to the end of a mapping/rolling road session yesterday (Steve Greenald working his usual magic) and time for some power runs. Up she goes, max rpm, onto the run-down phase and then - a whiff of clutch and looks of consternation. With a sequential, you can't just knock it into neutral for the coast-down section so the trick is to keep the clutch fully depressed till the run-down is completed. But with clutch pedal fully depressed it seemed as though the clutch was gradually re-engaging, not holding in the fully depressed position so beginning to drag slightly, which is not a nice situation when you think about what's going on with the rollers. Anyway, brought to a halt without any ill effects but we couldn't risk doing any more power runs till the problem is fixed. Ideas? I'm not aware of master cylinder or, fingers crossed, slave cylinder issues (it's a concentric jobbie in the Duratec, so an engine out job to replace) and the only change I've made recently is to replace the DOT4 fluid with DOT5.1. Temps were quite high, of course, with a lot of heat soak into the block, bell housing and transmission casing from several hours of roller running, but I can't see that being a significant factor. Only 7,000 miles, never raced or rallied - you get the story. Anyone had a similar experience, or got any ideas? James

Hi Neil Sorry to hear all of that. I've sent you a mail - not about the car but about some DVLA documentation you may find interesting if you are not already familiar with it. Good luck with your health and, of course, with selling the car. It looks and sounds to be a good'un. James

Looks lovely, Neil. Sorry to hear about your circumstances, though; best wishes that this is a temporary state of affairs. Might be worthwhile advising what the interior spec is - is it integrated/swoopy dash, or carbon, etc, and maybe what type of seats and belts/harnesses are fitted (I suppose a couple of interior shots would cover it!)? James

Replying to #422 "This really was not a dig at Chris having re-read the thread." I never thought your comment was a dig at anyone - and I'd be surprised if anyone else did! For what it's worth, I have just gone down the route described above by 7wotw; not cheap but I'm confident that I won't have any more issues and Steve at SPC is great to deal with. James

Hi Chris - welcome to an increasingly non-exclusive club! James

More useful info, Andrew - thanks (I'm still strangely interested in this, despite having sold my CSR at the end of last year. Maybe its because I'm harbouring some guilty secret thoughts about having another one some day - or maybe even twisting Caterham's arm to supply me a CSR 'glider' for me to build up...). Anyway, seeing that you are effectively running a full race geo on the road, what's it like given the appalling conditions of many of this country's roads? Is it darty, does it tend to tramline, does it jink and pull-around (bump steer) over bumps and surface imperfections? And the obvious question - given the set up, will you try it on a trackday at some point? Should be super-fun! James

"I just came across Trackday Insurance (third party cover) Benefit we have as members. I didn't know that. A nice benefit. " It is, indeed. Possibly unique, we believe. A valuable further benefit of participation in Club trackdays. James (Helper on Club trackdays to Commander in Chief Maitland)

"Any thoughts?" Yes - just ask nicely! James

It is a pain, though... (Not to remove them; the fact that it happens so often). James

James

That's really useful information - thanks for sharing, too. Interesting to see that the CSR in race spec takes less rake (0-5mm) than the road-spec CSR (around 18mm if I recall correctly) and a S3 car (where I think 15mm is the figure usually recommended). James

I think all the info you need is in this thread HERE. James

No - I turned around and went home with my tail between my legs (and Simon Houghton's brilliant BMW diff jig in my hands). Mind you, I didn't try very hard to weedle my way in.... James

It looked like a fun event from my position peering through the railings on the main gate. Apparently there's a global pandemic going on that restricts admittance and viewing at outdoor events - who knew? James

Replying to #16 Err yes, as my reply at #2 was saying! James

Standard ebay - just click on the link to the 'original listing'. James

Here you go: ebay Titan lsd unit (sold) James

An identical sounding unit just sold three weeks' ago on ebay for £299, so I guess that is the market value. James

There you go: explained perfectly in one short sentence - 'the flanges of the prop should, ideally, be parallel, though offset'. Well out, that man. James

"...prop shafts should be run out of line to avoid this..." Indeed, but the second important point is that the end faces should have a common alignment (orthogonally aligned??), even though the shaft itself runs at an angle between the end joints. Hence the need to get the engine and diff (in this example) mounted as closely as possible to the same x / y / z inclinations, and the joint mounting faces parallel to each other in three planes, even if there is a physical offset between them. Hard to describe in words, though I know what I mean! James

"@Toughie / James - re. the settings info, what stood out for me is how little negative camber seems to be recommended for CSRs. I'm running around -1.5 at the moment, which I think is not unusual for s3/sv cars. I might try winding camber back a bit. Of course a lot depends on how the car is being used for, balance for track / road use, etc" Yes, the CSR is a different animal to the S3 or SV. If you haven't previously seen it, the SV-R development paper by Multimatic provides some interesting insight. There's a link to a version of it here (there are probably better links to be found, but this one seems to work): http://fdocuments.in/document/caterham-new-susp.html James

"I also had toe out at the rear, and it's more stable now that's gone..." Blimey, I bet it is! Glad I haven't been your passenger yet! James