Joined: Aug 2017 Posts: 532 Threads: 46
Reputation:
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Location: Oakley, Hants, UK
Car type: 1929 AD Tourer, 1930 Rosengart LR2, Rosengart LR4 Van 1938 APE Tourer (Opal)
14-11-2018, 05:46 PM
(This post was last modified: 14-11-2018, 05:46 PM by Derek Sheldon.)
Suggest new loom from seven workshop, search internet for wiring diagram, Cornish Austin seven club is a good source.
I am always interested in any information about Rosengart details or current owners.
Joined: Mar 2018 Posts: 697 Threads: 33
Reputation:
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Location: Lot region FRANCE
If its a special, then a standard loom may not be what you require. Have a look at a standard wiring diagram and go from there. Select the correct gauge of wire for the lamp/dynamo/ammeter etc. If you want trouble free 6volt electrics, run an earth wire to each lamp, and add an earth wire from the battery to the engine or gearbox. It sounds like you would be better off removing all the old wiring and start afresh. Once you have all your wires roughly in place, bind the 'loom' together with 'self amalgamating tape'. You can also use plastic spiral wrap, but it doesn't look quite so professional.
Joined: Aug 2017 Posts: 3,418 Threads: 107
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Location: Darkest Bedfordshire
Agree with Bob, earth everything directly back to the battery not through the body. Also use the largest size wires you can feasibly squeeze through the various holes, in order to minimise voltage drop. Braided cable works against you in this respect - I would suggest to use it only where it is visible.
Joined: Aug 2017 Posts: 688 Threads: 113
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As your car is a Special, period correct wiring my not be important. However, armored wiring would have been the type used in '27, I think.
Erich in Seattle
Joined: May 2018 Posts: 2,121 Threads: 111
Reputation:
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Location: Llandrindod Wells
Car type: 29 Special, 30 RK, 28 C Cab
I agree with Erich
If you do want to be faithful to a 1927 car then looms were not used and the wiring is much more simple than even that shown for the RP. The biggest problem is getting all the wires connected into the SM5 switch box. Being a special it may not use this. Woodrow has wiring diagrams for early cars.
Howard
Joined: Aug 2017 Posts: 783 Threads: 26
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Location: On a hill in Wiltshire
I don't suppose you are anywhere near me (mid Wilts) - I would be happy to help.
Don't just dive in with your expensive braided wire - do dummy runs first, even if it is bits of string.
1) because your first idea for a route, on a special, may not be the best.
2) The first few wires back to the cut out or dashboard look neat and well planned, but when trying to fiddle the last odd one from the fuel tank sender into the final "rats nest" - you realise you could have done it better but it is too late now.
Solder everything you can.
Provide a separate earth for everything, don't rely on the bodywork, particularly on a special.
Over-rate the wires, especially if you are still on 6 volts.
I tend to use the "chocolate block" screw connectors where I can get them hidden away, I do not like the "bullet" connectors, and the block connectors can act as a gathering point for earths or lighting wires - 4 come in to the block, but only one needs to come out to the switch - for example. Simplifies things, sometimes.
Simon
Joined: Aug 2017 Posts: 2,748 Threads: 31
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Location: Auckland, NZ
14-11-2018, 07:11 PM
(This post was last modified: 14-11-2018, 07:19 PM by Bob Culver.)
The wiring diagrams are fine if all is original but usually end up drawing for yourself a circuit diagram. John Cornforths Ruby diagram on Dorset site does this for you. May need adapting slightly to suit earlier based.
Not all newcomers accustomed to moderns are enamoured ofSevens of any sort. What appeals to you?
