Author Topic: magneto  (Read 2942 times)

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Offline joeis6

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magneto
« on: 07 Jan 2015 at 08:25 »
I have been making these clips to attach the plug leads to the magneto pickups, they took a long time, and  why does this da2 magneto have three pickups?
neale

Offline cardan

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Re: magneto
« Reply #1 on: 12 Jan 2015 at 10:59 »

Nice little doo-dads - my 1910 FN four uses these for the HT cables from the Bosch FN10 magneto to the distributor and from the distributor to the plugs (at the distributor end). Did you make tooling, or make them "by hand"?

As for the three pick-ups - no idea! Give us a clue. Is the brass strip on the slip ring a complete circle or segmented? How many ramps are there on the points? (One or two are the normal possibilities.)

I'd comment on the car but (a) we'd get into trouble and (b) it's too modern for me anyway!

Cheers

Leon

Offline graeme

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Re: magneto
« Reply #2 on: 12 Jan 2015 at 12:09 »
Could the third "pick up" be for an ignition cut-out?

Offline cardan

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Re: magneto
« Reply #3 on: 12 Jan 2015 at 22:29 »

Good idea Graeme. The cut-out was usually on the primary circuit at the points end, but it's an early magneto. Twin with cut-out?

Leon

Offline Douglas52

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Re: magneto
« Reply #4 on: 13 Jan 2015 at 08:14 »
Looks like an external HT earth.

Offline joeis6

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Re: magneto
« Reply #5 on: 13 Jan 2015 at 09:10 »
hello Leon I made the plug lead ends using tools from a man who has  an FN. He had an example of an     original which was very useful he found he could not make them in brass so made his out of copper and they turned out very well. I persisted with brass which I annealed twice and punched into a sphere. after several rejects success. there is also a small spring made from piano wire riveted inside.
the mag has a segmented slip ring and the cam has two lumps at 180 degrees. The photo of the car was a mistake only noticed after the post I was very relieved to see it was not of a pregnant wife in the bath.  Neale
neale

Offline cardan

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Re: magneto
« Reply #6 on: 14 Jan 2015 at 08:44 »

The mind boggles - nice car but I'm sure your wife looks good too.

So the third pick up is a means of shorting out the sparks. I wonder what year the maggie is - it can be dated from the serial number if you care to post it.

The mag looks small in the photo. Is it "Douglas size"? There were of course many types of flat twin motors with a range of applications.

Leon

Offline joeis6

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Re: magneto
« Reply #7 on: 15 Jan 2015 at 04:05 »
the number is from 1911 , it fits onto the douglas mounts fine but the drive end oil cap is masked by the douglas casting,it requires something like a small crewdriver to open its cap
neale