Recent content by Charles Lamont

A scruffy ST compressor just sold on Ebay for over £300. https://www.ebay.co.uk/itm/stuart-turner-compressor-turns-over-fine-but-will-need-checking-over-and-paint/254838077928?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

Thanks for the massive help. I don't think I need to go any further in terms of the ignition at the moment. Getting back to the electronics will have to wait until I have a coolant pump, and possibly the starter motor. See my post at Westbury 'Seagull'

Folks, it is running (after a while). The video can go full screen I think. http://www.charleslamont.me.uk/Seagull/testing.html

Earthed, grounded = battery negative - my sloppy language. I will try to be more precise in future! I think it was probably the TIM-6 that blew the two hall sensors. The sensor always has been well insulated at the engine, and the engine connected to battery negative (the latter less important...

Soo. Listening to the advice above, I have isolated everything from the lathe, and that seems to have eliminated that noise problem for now. I also took away the buck regulator power supply for the ignition and wired it directly to the 4.8V battery pack. I fitted a big aluminium bar to ground...

I think neoprene will need an adhesive. Hot welding is for polyurethane belting, so surely a red herring?

I forget, does the Trimble method include a final turning stage, after heat-treatment?

Arrand kit was superbly made. I too have one of their boring heads, and a milling arbor.

The label on the box tells us they were sold by Stuart, during their Guernsey ownership. I think they are likely to be carbon steel, not HSS. I don't think they have anything to do with the Tap and Die Co (which I have always found overpriced whenever I have looked).

Guys, thanks very much for all the suggestions. I have a lot to think about, and quite a bit of work to do. I will be back when there is something to report.

Ray - Just to clarify, the coil is a Minimag Novus 2 coil designed specifically for 2-cylinder model engine applications using a wasted spark. The HT leads are connected one to each plug. The HT is not connected to the LT. I can isolate the circuitry from the lathe. Nylon bolts (on order), and...

Thanks, Tim. I will think about the best way to implement your recommendations on grounding. Awkward little buggers, these electron thingys. I have plenty of ally sheet I could cover the board with, so that may well be part of the solution, or perhaps a chunk of brass to provide a star...

Jens, using scrap sources may be fine for making models, but the OP wants to build an engine that he would be trusting with his life.

Yes.

It is a lovely piece of kit but it isn't a Westbury design.