That's a great idea! Not too hard to implement either. I think I'd do it with electronics between the button and the main UP relay for the lift - with luck inside the main handset. That way it would be minimally intrusive and I think would cover more of the possibilities than a relay. So the circuit itself gets switched on by the button and kinda does a test first to decide whether it's going to allow the button to pass current to the normal main relay. I just have a feeling that would be better than introducing another relay (and deciding whether it's going to be normally closed or normally open) with their attendant reliability problems; though Jeff would at least have parts on hand if it's a socketed relay. You could even do it in two levels, a warning height and a damage height, and introduce a beeper for when it's in between, plus maybe an orange and a red relay on the handset for 'Warning' and 'Limit up' in case the garage is noisy. Electronics is more likely to last 30 years than a relay but the most important thing to do would be to list all the use permutations of where the car is and how things could go wrong - including failure of the laser beam (or bulb?) and any of the electronic components. You don't want the pass transistor to fail as a short, though that's less likely than a relay failing, I think. Actually, they at least tend to fail open. Hmmm. (And I've got some 40 year old relays in my car.) It needs proper thought but it's a superb idea nonetheless!

I’m not sure a pool noodle will do much against a lift that’s made to pick up a car.

It’s more a warning. They compress pretty well.

Lister bell? What engine have you gone for and how many hours would you estimate you've put into it? I'm on the list!

@@AlastairSmith Hi Alastair, good to hear from you. Yes an LB with a 3.0 24v Busso. I started in November 2019! It's my first kit car build so a very steep learning curve coupled with I'm a perfectionist and supply chain issues during and since COVID. On positives though, the engineering is sublime, the finish is first class and aesthetically it's mechanical porn!! Where are you based? Are you a paid member of the SEC?

I had the 911 one before and last week added the lower Alfa one ;)

Thanks mate. Seeing your Torana in the flesh was an eye opener as well. Hopefully we will do a trip and get some great shots of them together.

@@HomeBuiltByJeff I certainly hope that happens!!! 👌

Thanks mate :D

Thanks mate. It has been a long time coming :D