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Oct 23, 2006 13:04:18 GMT
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There's a 3-page guide on how to convert from 6 volts to 12 volts but the mag doesn't hit the shops until Friday. I was wondering if one of you good subscribers would be able to relay me some inside information before I can get one later in the week.
Is there any mention of what dynamo or alternator to use? There isn't a 12 volt alternative to the one on the Pop and my pulley doesn't fit on the normal 12 volt dynamos. All the alternators are a completely different shape and a rewind of the 6 volt dynamo is frighteningly expensive! If there is a direct fit it would be handy as it'll save me having to make up brackets and bodge about the pulleys!
It's really annoying because the fan is on the dynamo pully, not the crank (and it powers the heater) so I have to use something that the pulley fits on.
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,538
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Oct 23, 2006 14:03:53 GMT
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Jon, I've replied to your mail but is there any chance of some pics? Might make suggestions easier. Also give me a shout if some tweaking of bits with a lathe might help.  |
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Follow your dreams or you might as well be a vegetable. |
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Oct 23, 2006 14:28:15 GMT
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Thanks Seth. The Lucas C40 is the one they have in the shops but the back of the pulley fouls the body on the dynamo.
Hmm you've possibly given me an idea with the lathe though. If I can get the pulley off my alternator I think it's a bigger diameter shaft so we might be able to bore it out or make a spacer and I'd be able to use the fan/pulley combo I need. Plus I'd rather use the alternator obviously. Bah what idiot did it up that tight?
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,538
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Oct 23, 2006 14:56:00 GMT
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Jon, You need to be careful swaping pulleys between alternators and dynamos as they're designed to run at different speeds. I think its that aLternator pulleys are smaller dia so if you put an alt pulley on a dynamo it might run too fast and go bang. Would be best to adapt your fan/pulley direct to the C40 if that's going to be possible.  |
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Follow your dreams or you might as well be a vegetable.
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Oct 23, 2006 18:37:10 GMT
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Right finally got the pulley off the alternator. Decided to go the hardcore old meets new route and get the alternator on there. AMAZINGLY the shaft diameters are the same, but I need to machine out the inside of the pulley just a tad to be able to get the spring washer on and to help get a spanner on the nut. This will mean the pulley on the alternator is bigger than normal but I don't think it'll be a problem because it's a 45-amp jobbie and the dynamos only do about 15.
Seth do you have a boring bar (like a claw shaped tool) for the lathe and does the chuck open up to about 70mm? Any long tool might do the trick actually.
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Last Edit: Oct 23, 2006 18:38:12 GMT by Deleted
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,538
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Oct 23, 2006 18:49:15 GMT
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Seth do you have a boring bar (like a claw shaped tool) for the lathe and does the chuck open up to about 70mm? Any long tool might do the trick actually. I have a couple of boring tools. From what you describe, yes I should be able to sort you out. I can reverse the jaws in the chuck to hold larger things. A photo would more than likely tell me for sure and save you a wasted journey if you come over and I can't do it! |
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Follow your dreams or you might as well be a vegetable.
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Oct 23, 2006 19:31:34 GMT
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Cool, tomorrow morning...
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Oct 24, 2006 10:06:46 GMT
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Ok pics a plenty... Here are the two items, alternator on the left, old dynamo on the right:  How the fan goes on the front of the alternator pulley:  Fan off and you can see how close the nut is to the thread bosses, so I'd like to shave off literally a millemetre from those to help get a spanner in. I'll actually take off more if I can. right down to the screw threads as it won't affect how the fan is held on:  And inside the pulley there's a raised ring round where the shaft goes through. I'd like to just take that down so the nut can screw on another mil or so. If I can get a tool in to turn that face back another millemetre or two it would also help but not 100% necessary:  |
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