John Olsen | 12/05/2015 04:00:58 |
1294 forum posts 108 photos 1 articles | Ian, I suspect the objection to the floating winding would be the possibility of a fault in the transformer making the 110V side live at up to 230 Volts relative to ground. Ideally that transformer would have a grounded shield between the two windings, but some manufacturer would eventually think of the idea of "Value engineering" it out. But your idea is why I would prefer to see the casing earthed to the centre tap and both 55V lines fused. 110 Volts might be less likely to electrocute, but it is much better for starting fires, because the available current is doubled. If you look into it , different countries have different approaches to wiring, sometimes diametrically opposed, and all justified on the grounds of safety. I just bought a small water heater unit, and the guy had to open the box and cut off the European style connector because he could get in trouble for selling it with it on...never mind that the European connector is superior to the ones we use in NZ. John
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martyn nutland | 12/05/2015 08:21:16 |
141 forum posts 10 photos | All this electrical expertise is enormously erudite and impressive, but isn't the golden, irrevocable rule NEVER EVER buy old electrical equipment from e-Bay, car boot sales, flea markets, auto jumbles etc etc whether it be an electric fire, a hair-dryer or a drill. This is quite obviously a 'dud', probably dangerous, and most definitely for the scrap bin now! Might be worth saving the plug. Martyn
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JasonB | 12/05/2015 08:30:39 |
![]() 25215 forum posts 3105 photos 1 articles | Posted by Rainbows on 10/05/2015 19:42:51:
Trying to not get off topic but what on earth was a dril this big needed for? It has a drill press stand but I can't fathom the point where you would need to unhook it and risk your life trying to use it by hand. Exactly the same sort of thing a Mag drill is used for today, when you need to drill something insitu |
OuBallie | 12/05/2015 15:27:22 |
![]() 1181 forum posts 669 photos | Rainbows, Dad used the drill when he repaired our old Willys after it was T-boned dead centre on N/S, and then on another occasion when a Municipal lorry lost its brakes and went through a red light, doing grief to the O/S front end, and put Mom in hospital. The first was a body off chassis repair job with holes welded up then drilled out. Also used when he built a caravan for the family. It won't drop for anyone if the drill bit snagged on breaking through, and even at that low speed it caught one out, me included on a few times. Geoff - Recovered from root canal works done yesterday PM.
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Phil Whitley | 12/05/2015 19:39:56 |
![]() 1533 forum posts 147 photos | Posted by martyn nutland on 12/05/2015 08:21:16:
All this electrical expertise is enormously erudite and impressive, but isn't the golden, irrevocable rule NEVER EVER buy old electrical equipment from e-Bay, car boot sales, flea markets, auto jumbles etc etc whether it be an electric fire, a hair-dryer or a drill. This is quite obviously a 'dud', probably dangerous, and most definitely for the scrap bin now! Might be worth saving the plug. Martyn Hi Martyn, I hope you are not one of those people who thinks that everything made today is better/faster/safer/more sophisticated/more efficient that things made some time ago, because generally they are only cheaper! In the 1970s a 9" angle grinder by black and decker (industrial quality, like this tool) was approaching £150, but would last a lifetime, like this tool has, and was repairable ad infinitum. If this tool is properly earthed it is as safe to use as any modern tool, and its build quality is far and away above anything made today. This is not speculation, I have been repairing tools since the late 60's, and I am afraid as a tool making society we peaked in about 1965 when we still made everything in house, the same applies to the USA. I have just tried to obtain parts for a 2 year old Mac (USA) air ratchet, it is made in japan, and no parts are available. Even the power tool manufacturers who used to be considered good (Bosch/makita et al) are having all but the very top of their range tools made in China Phil.
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Stuart Bridger | 12/05/2015 20:52:32 |
566 forum posts 31 photos | Posted by martyn nutland on 12/05/2015 08:21:16:
All this electrical expertise is enormously erudite and impressive, but isn't the golden, irrevocable rule NEVER EVER buy old electrical equipment from e-Bay, car boot sales, flea markets, auto jumbles etc etc whether it be an electric fire, a hair-dryer or a drill. This is quite obviously a 'dud', probably dangerous, and most definitely for the scrap bin now! Might be worth saving the plug. Martyn
I assume this advice also applies to all the 2nd hand, Myford, Colchester, Boxford, Drummond, etc. lathes that we are all using ???
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