Well there's your problem and you already know it.
What exactly are we supposed to do about poor design on your part?
Yeah I know I know......... I had hoped for some way around it, the engine didnt have a governor on it so I had to bodge it. Maybe I can use a stepper in 1/2 step mode and put a micro on to count the revs, I was also told that tying it to the mains would force it into sync. The problem I have with that is if the power fails and they try and work on the lines!!
I might take the turbo off altogether and that will get rid of one problem. I was first told £200 max for parts but slowly thats creeping up, I would give u but then I dont get paid!! On the other hand its getting to the point its not worth the trouble, I think originally they assumed because they have access to waste veg oil that the electric would be free.
I was told the plan was too use the oil just filtered, this didnt work well at all so now its turned into 'real' bio diesel with methanol etc. They have 3 takeaway shops and a small farm, but really tight with money. They think you can make the fuel bi monthly and be done with it, I tried to explain how hygroscopic it is and how they are better making what they need every couple of weeks. Might as well talk to the engine!
It would be a nice generator if it had some money spent on it! I also sugestead they put a heat exchange on the exhaust system and water cooling, but they thought £100 was too much for the bits! When I get my generator I think I will go that route.
I love the Lister engine though, it was nice to work on except the old imperial sizes for spanners lol. Also finding a couple of taps for stripped threads was a PITA, I love the thump thump noise it makes