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so could you elaborate on how to do this please?Personally I'd use a 100A device (with suitable thermal/overcurrent trip, resettable) and be careful how I used it. I'd also use a bypass switch to run it at full current when that was necessary - probably not very often.
Even a low current controller can be modified to work at MUCH higher currents by changing the switching device (probably a MOSFET) for one - probably a few wired in parallel - device rated for much higher current.
You can get N-channel MOSFETs rated at 30V and 500A (IRDS(on) value of 0.0007ohms!) for £1.20 at Farnell.
Use any good component supplier and their parametric search engines.
Not yet, working on it. If I were to pay for someone's services I would pay for another winch and let whoever wants to take the job determine the motor type and figure out how to control it's speed and make a nice little control box and send me the winch with the modification of the added control box / panel. Easy money for those that know how! I have to mention, this speed controlled winch is a neccessity for me!You don't have the motor technology yet. do you?
Couldn't you simply pull the load via a strong coil spring to avoid the initial jerk?I want to gradually increase the speed of the winch, not just on or off, to take out the jerk,
More likely the winch motor would stall or cut out, if the chain has been properly specified. With half a ton of flywheel attached the inertial load could keep the motor nearly stalled for quite a while.I fear that the winch would snap the chain
Per the posted spec, the winch already has a manual clutch.I might just use a centrifugal clutch in fact
Yes, but the centrifugal clutch wont stop the motor from turning and will give the flywheel chance to catch up to speed so that it runs in unison with the winch burning clutch is better than burning winch!!!More likely the winch motor would stall or cut out, if the chain has been properly specified. With half a ton of flywheel attached the inertial load could keep the motor nearly stalled for quite a while.
Per the posted spec, the winch already has a manual clutch.
that clutch is either engaged or not, there's no slipPer the posted spec, the winch already has a manual clutch.
Why not simply use a geared AC motor with VFD control, rather than the winch?I want to put a sprocket on to the shaft and turn a half ton flywheel via chain!