I need to buy a battery for the Velo Clubman (500cc). At some point it was converted to 12v, what rating should I be looking for? Obviously there's no electric starter, just the head and tail lamps from memory, so what would be a suitable amp-hour rating to go for??
thanks, R _________________ Rick (Admin. oldclassiccar.co.uk)
Various 1930s-1960s relics - Austin, Morris, Bedford, Dodge etc.
I'll ask my dad when I see him at the weekend. His Velo Clubman has now got to the reassembly, rather than dis-assembly stage, so hopefully not long now!.
Joined: 27 Dec 2008 Posts: 1116 Location: Chesterfield
Posted: Sat Sep 10, 2011 10:52 pm Post subject:
Can't answer this directly Rick. But logically, using only half as many amps to drive things, then only half the amp hours specified for the original at 6 volts.
However bearing in mind that you likely have a more powerful headlamp bulb, used more frequently with modern traffic I would settle for the same capacity as original. Especially if you intend to fit flashers for safety (I won't ride a bike these days without them - young drivers think you are waving at them!)
The modern Gel batteries are much more compact then the old lead/acids so space should not be a problem. In fact a 12volt Gel battery will comfortably fit inside a dummy 6volt case to maintain appearance. With other advantages too.
Anyway, a pint is always better than a half, isn't it?
Jim. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then!
My dad was not much help to be honest - his view is simply that as long as it generates more than it uses, then you are OK (given that you haven't got a starter motor to worry about).
It is something he will have to tackle himself soon as he plans to convert his to 12v, simply to enable him to fit indicators.
Mrs Axel has a degree in Electronics, so I will ask her.
Joined: 28 Aug 2008 Posts: 378 Location: Northern MA, USA
Posted: Mon Sep 19, 2011 11:14 pm Post subject:
Rick
I think I'd just go for the largest (&/or largest amp/hr capacity) that will fit the case. This will give you the most reserve if the dynamo croaks. A deep-cycle design wouldn't hurt, but they get expensive.
Make sure the terminals are in the right places! _________________ Mike
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