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Author Topic: Huge pulleys  (Read 1091 times)
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« on: February 27, 2018, 07:33:05 AM »

Spa 800 X 6
Spa 250 X 6

Well over 300 quids worth. Hardly used. Collect or pallet from TA24 8HJ

Sensible offer accepted.

Pic of wheel on day 1
7.2kW Waterwheel and 9.8kW PV
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An unpaid Navitron volunteer who lives off-grid.

« Reply #1 on: February 27, 2018, 10:26:31 AM »

I would like to thank you again, for the pulley that you sent me Guy,
                                    I got a good result with it and could not have got a better one for the job.
 I also got to learn about taperlocks and pillowblocks. I learned how to work out the ratio of the engine pully and have the PMG cruising at 375rpm with the engine running @1500rpm.
  So if any member is reading this and has an interest in building a high voltage DC charger, Guy,s pulleys would be a fantastic start.
 My Pulley was 500mm x 2 and i used the second V to drive an alternator which charged @ 12v for the starter battery but better still was also a equalising force or opposing force on the big PMC bearing because the alternator was located on the opposite side of the PMG to the engine.
  So have a think members,,especially if you are off-grid. Guy,s pulleys would be ideal for a 3 to 5 kw PMG. You could not go wrong . Mine cruises initially @ 140-4 x 12amp and then 150v x 9amp after 100minutes. It also runs the house during that time. The battery is old and tired but still gives a further 4 hours service before falling down to 124vdc. The bottom line is....It is an absolute miser on diesel.
  So Paul,,If you have a big spare Proven lump,,  Or anyone with a big Y/S 3kw or 5kw              .........  You are talking massive saving on diesel and permanently connected ,,with no need for silly transfer switches ect... Brilliant.
« Last Edit: February 27, 2018, 10:32:43 AM by biff » Logged

An unpaid Navitron volunteer,who has been living off-grid,powered by wind and solar,each year better than the last one.
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