Jonathan Kay

All used to work and then failed together? Any recent work? Is the tachometer working? Check fuse. (And does the heater fan work?)Check instrument earth.Have you got a wiring diagram and fuse layout (probably as below)? Jonathan 1998 Fusebox layout_0.pdf

Polybushes would be better but the Powerflex options appear to be for Dedion rather that Ital LA. I'm not sure if they are the s s me bush but the Powerflex web site makes no mention of LA suitability Previous discussions. Jonathan

Does it have a part number stamped on one of the mounting feet? How Facet part numbers work. (But this is a website with which I'm not familiar... ) Jonathan

:-) Jonathan

I do wonder though to what extent inflating a tyre rapidly on an airline leaves the within the tyre at a temperature different to ambient and therefore whether the pressure may then "settle" afterwards as the temperature comes to equilibrium. What sort of pressure gauge could you connect to your oscilloscope? Jonathan

SNAP! The model in #9 makes assumptions about how near the behaviour is to that of an ideal gas and about the compliance of the containing vessel. The former probably isn't too far off but I have no idea about the latter in practice. Anyone fancy doing the experiment? The adiabatic heating might be a bit difficult, but otherwise it would only take a decent pressure gauge and some convenient mass to measure the effect. Three sentient life forms should do. Jonathan PS: I think that there's a previous discussion somewhere...

However, the general consensus seems to be that you ARE expected to pump the tyres up when loading the car heavily. Yes. That's the recommendation for ordinary vehicles. Jonathan

... hours spent driving vs hours spent working on the car. vs hours spent writing it up for us? :-) Jonathan

Thanks. No rush. Jonathan

Yes, please. Jonathan

And 2004 was: Jonathan

Yes, by 2012 that's: Jonathan

Please send me a Private Message with details of the Seven (model, engine, dash) and your email address. Jonathan

On my 1998 K de Dion it's: Would you like an Assembly Guide? Jonathan PS: List of bolt sizes with torque settings for various Caterham chassis.

There are several suggestions that they do, and it seems plausible. But I don't think that I've seen any convincing data. Jonathan

James WhitingSevens and ClassicsPartridge Green MotorsportJonathan

Sevens and ClassicsMillwood... Where are you? ... Possible part number: 1, 2. Jonathan

The WD40 displaces the water absorbed into the composite (around 1% over prolonged exposure, according to this research: https://pdfs.semanticscholar.org/aae5/cc999bf7184d7bba7cc7d6f44979c4c9afa9.pdf ) Waxes do little to seal the surface effectively and from my experimentation with a number of synthetic wax/sealer treatments, do not correct the water mark already created (also, lots of complex chemicals in these, too, so not necessarily any more environmentally friendly than WD40). Thanks. I can understand how WD-40 displaces water in the material, and it is very good at that. Does the milkiness disappear as soon as it's applied or is there a noticeable delay? But once that has been achieved I don't understand why it would be better than a hydrophobic wax. They should have the same effect on subsequent water penetration but I'd expect the wax to hang around longer. Have they ever been compared after the initial application of WD-40? Jonathan

"It is fairly straightforward depending on what you are wrapping, however the internal curves around the inside edge of the nosecone were tricky. It is quite forgiving so take your time and it should be ok" Jonathan

Please don't put off changing or discarding the foam. Jonathan

Have you considered vinyl wrapping? Jonathan

:-) You can tie the spare cables to a chassis member eg under the bonnet. And fit the jack in front of the heater. And (eventually) add a couple of tool tubes... Jonathan

A new sender from Chris at Redline solves the issue immediately. I think that's what I'd probably do. Jonathan

Depending how much I go out in the rain, I usually go between a month and 3 months between applying WD40 on the carbon fibre. What do you think makes it work well? WD-40 is a mix of liquid hydrocarbons in a convenient package. How about a comparative trial against a hydrocarbon wax, a silicone wax and carnauba wax or similar, which is probably the least polluting? Jonathan

It does work, but you don't have to leave the site if you don't want to. That first link in post #20 was to a thread about the new built-in Google search. Jonathan