gritineye Posted July 10, 2009 Share Posted July 10, 2009 The link to this firm was in the Scammell register newsletter, apparently they can build an alternator inside your old dynamo casing, could be useful to keep that period look. http://remanufacturers.co.uk/ Tel. 01623 863 600 Quote Link to comment Share on other sites More sharing options...
LeeEnfield Posted July 10, 2009 Share Posted July 10, 2009 Could be interesting,..............mind you site seems to being re-done at the mo. Andy Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted July 10, 2009 Share Posted July 10, 2009 We are working on this at the moment because of the shortage of control boxes for all this old stuff.cw Quote Link to comment Share on other sites More sharing options...
fv1609 Posted July 10, 2009 Share Posted July 10, 2009 apparently they can build an alternator inside your old dynamo casing, Seems quite feasible when you consider that a dynamo is in effect an alternator but has a mechanical switching system performing the role of a rectifier to produce DC. Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted July 10, 2009 Share Posted July 10, 2009 The two difficulties I've encountered have been 1) Alternators are generally larger diameter for similar output (often fouling water pipes/coolers and other ancillaries) - this is more of a problem when replacing civilian type dynamos as military ones tend to be 'big' to say the least! 2) Alternators ideally should run a bit faster than dynamos, so they tend not to charge so well at very low speeds unless you alter pulleys. Quote Link to comment Share on other sites More sharing options...
Stormin Posted July 10, 2009 Share Posted July 10, 2009 What happens to the control box (voltage regulator?) when wiring up an alternator is it bypassed or kept in line? Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted July 10, 2009 Share Posted July 10, 2009 Disconnected! Simplest way for wiring is to use an alternator with built-in regulator. Quote Link to comment Share on other sites More sharing options...
goanna Posted July 11, 2009 Share Posted July 11, 2009 A business here was advertising these . They look somewhat like the ubiquitous LUCAS C39-40 series ..but are actually 80 amp rated alternators ...I spotted them in a local old car magazine here . Mike PS the mag is RESTORED CARS and the business was at Castlemaine in Victoria Quote Link to comment Share on other sites More sharing options...
Stormin Posted July 11, 2009 Share Posted July 11, 2009 Disconnected! Simplest way for wiring is to use an alternator with built-in regulator. But if the idea is to preserve the original look, then surely the charge wires should still run to the redundant control box (still in place) and bypass the internal workings. I would asume most people would require the ammeter where fitted to also work. Quote Link to comment Share on other sites More sharing options...
Grasshopper Posted July 11, 2009 Share Posted July 11, 2009 Given that most dynamos don't charge at idle, an alternator not charging at low rpm should not really be a problem. Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted July 11, 2009 Share Posted July 11, 2009 But if the idea is to preserve the original look, then surely the charge wires should still run to the redundant control box (still in place) and bypass the internal workings. I would asume most people would require the ammeter where fitted to also work. Absolutely! The case can also make a good extra fuseboard. I've stripped out a perfectly good control box from the Autocar (which had been bypassed long before I got it) - the internals I can sell on for someone to repair an original, and the case will soon house a wiring junction box and flasher unit Can anyone tell us more about these 80amp units mentioned by goanna? I can't seem to find them on Gritineye's link :confused: Quote Link to comment Share on other sites More sharing options...
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