Despite their reputation, the Lucas engineers were pretty darn good at what they did. This is from one of their documents detailing the operating principles behind generators. I probably could put a different pulley on, but it would be quite tricky to get one that is a little faster on it while not being too much. Probably have to get one custom machined. However after testing the box today on the car, it's pretty much bang on the money for cutin and out. Possibly needs tweaking a little downwards as cut-in happens about the 1.5k mark. But for now I'm content with that until I get a few miles onto it. Around here there are virtually no traffic lights, so for pottering around it's a bit of a muchness to begin with.DodgeRover wrote: ↑Sat Aug 08, 2020 9:16 pm I knew the charge rate was low, but can you not alter the pulley size to give the max charge rate at a lower rpm? I'm assuming you aren't planning on long motorway stints in it so over revving the dynamo probably wouldn't be an issue.
There is no ammeter or anything like that on the car and is something I'm quite keen to add in the near future. Likewise a rev counter would be a nice thing given these engines aren't the happiest revving units.
Probably get a three 52mm gauges (ammeter, rev and oil pressure) and fit it where the ashtray used to be. A bit giffer-trinket-tastic, but useful info to know if you want to keep the life of the engine at its longest.
I've contemplated it on the MGB. You can get Weber shaped injection units but they're not particularly cheap. Contain the bare basics like idle stepper, throttle position sensor, fuel regulator and intake temp sensor which is enough to make an open loop injection system. Not as efficient as a closed loop system but still much better than a carb, while staying simple. Remember most pre 2005 cars with a traditional Lambda will run open loop until that warms up.DodgeRover wrote: ↑Sat Aug 08, 2020 9:16 pm Now the perverse side of me would actually like to fit a home brew fuel injection set up with the caveat that I knew how it functioned and how to repair it to. A certain furry person from the beige mentioned on RR he was planning to fit fuel injection to one of those infidel cars using over the counter parts designed for converting motorcycles
However I would miss having the choke. Also I like the pure mechanical simplicity with the cleverness of design from an SU carb. It also reminds me what little you need to make an engine run and how badly it can be out for it still to run quite well!