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  1. flatplane8

    Alternator for JP2M

    Hi, I got a 95a marine alternator from ebay and drive it from the flywheel of our JP3. A normal 'v' belt runs fine on the flat flywheel surface with an ordinary 'v' pulley on the alternator. Have a look for previous threads about this, including the one I started last week about pulleys. Simon
  2. flatplane8

    JP/JK pulley

    Yes, we'll get a flange made up to use the three big studs. Just working out the best coupling to use between the engine and gearbox to try and fit it all into the engine room (length-wise).
  3. flatplane8

    JP/JK pulley

    Thanks, that's what I thought. Sounds like neat solution for the pulley on a JP2/3 though.
  4. flatplane8

    JP/JK pulley

    That sounds interesting. Would it be capable of taking drive to a gearbox? I need to make an adaptor for my JK and was going to use the three threaded studs that would have connected it to the generator, but something like that could be another option. My gut feeling is that its fine for pulley loads, but might not be great with a whole 62hp going through it.
  5. flatplane8

    JP/JK pulley

    Thanks, I'll check it out, it would be a solution if it worked ok driving an alternator.
  6. flatplane8

    JP/JK pulley

    Thanks, our current arrangement driven from the flywheel does this so we can go pretty large on any pulley. My question is more around adding 14-20kg of rotating mass on the crankshaft. But I guess that's tiny compared to a JP/JK flywheel. Thanks for the other suggestions, I'm not sure round belting would suit alternator drives but will check it out.
  7. flatplane8

    JP/JK pulley

    Thanks, I use nutlink belting elsewhere. It won't work when run directly onto a flywheel, as the metal pins skate across the surface under load (ask me how I know...… I currently run our alternator directly off the flywheel as you describe, but this won't be ideal with JK4.
  8. flatplane8

    JP/JK pulley

    Hi, What size pulleys have people successfully fitted to JP/JKs? I'm looking at larger sizes to drive an alternator and possibly a 240v generator. This would be crankshaft mounted via a taperlock. I currently run our alternator from the flywheel rim via a belt, but this won't be a great option with our JK4, as the flywheel will be close coupled to a gearbox. I realise I could still use this method, but it would be nice to avoid breaking the coupling to change belts. Large (400-630mm dia.) pulleys are readily available, but they are between 12-20kgs in weight and I my not sure if this would be an issue on the end of the crankshaft. I've seen alternators driven by little rubber wheels from the rim of the flywheel, does anyone have any experience with such a setup? Thanks, Simon
  9. flatplane8

    Ebay vintage engine sales

    Ruston....looks nice https://www.ebay.co.uk/itm/Ruston-Hornsby-Engine-Diesel/173627147015?_trkparms=aid%3D888007%26algo%3DDISC.MBE%26ao%3D1%26asc%3D20140328180637%26meid%3D3e492e15c9c448bab44e47d74e837ef0%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D332857205202%26itm%3D173627147015&_trksid=p2047675.c100009.m1982
  10. flatplane8

    Ebay vintage engine sales

    I think they used an add template for a Loncin engine. If you scroll past that you get to the description of the JP3M.
  11. flatplane8

    Ebay vintage engine sales

    Lister JP3M on ebay Seller also mentions a JP2m for sale. There is also a nice looking JP1 generating set just appeared on ebay too.
  12. flatplane8

    JP3 running speed

    Here is a little video taken last night of a Morse control being used on a Lister JK4.
  13. flatplane8

    JP3 running speed

    Ah, see what you mean now, thanks for clarifying. Our JP3 is now controlled via a cable mechanism and we use the stops built into that to achieve the same thing. Yes, too much tension on the speeder spring could cause undue load on the engine.
  14. flatplane8

    JP3 running speed

    I'm not sure I see the logic in this as the spring works in tension only (until coil bound then I guess you could push on it), but I'll be trying out this very thing (morse control onto the speeder spring) on the JK4 later today in the workshop so will report back.
  15. flatplane8

    Jabsco water pump

    I experimented with a Davies Craig electric pump and controller on my Lister JP3 a few years ago. The pump speed adapts based on the temperature sensed. It seemed to work fine, but I had other problems with the system that I'd cobbled together, so took it off. The electric pump was for the engine coolant with antifreeze, a normal pump did the river water through the heat exchanger.

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