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Old 31-05-18, 10:02 AM   #1
nickh
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Default EEC "Colonial" dynamos.

Anyone know the approximate physical dimensions of these beasties? Looking at the electrical specs and prices, I reckon there must have been at least three and probably four, different frame sizes.

NHH
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Old 31-05-18, 10:12 AM   #2
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This is the only dimensioned picture I can find (from an old ebay listing) but of course there are no electrical ratings given so I don't know if it represents the small, medium or large frame as it were!

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Old 31-05-18, 11:36 AM   #3
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Scrolling through "Grace's Guide" EEC pages, in the Dynamo parts section it quotes "25 volt/6 amp Armature Tunnels" being 2.5" long and 2" diameter, so they can't have been very big.
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Old 31-05-18, 11:45 AM   #4
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150 Watts would equate to one of the medium sized units in the colonial range and looks to be about the same armature diameter as the one in ebay listing, so that's a starting point at least.

Thanks Charles.

NHH
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Old 31-05-18, 09:37 PM   #5
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Right, now it's in my grubby little mitts all can be revealed!

Bit smaller than I expected; body is 8" wide by 6 1/2" high and armature tunnel 3 1/2" long by 2 3/4" diameter so not a huge amount bigger than the 150 watt example Charles (pulsechoes) mentioned below, though of course I still don't know where that puts it in the range.

As expected from EEC, general construction is solid and workmanlike rather than top quality but overall quite a nice machine I think - EDIT; even with the missing foot which I hadn't even noticed in the listing.

NHH
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File Type: jpg P1010183.jpg (128.6 KB, 38 views)
File Type: jpg P1010184.jpg (108.0 KB, 33 views)
File Type: jpg P1010185.jpg (115.0 KB, 30 views)

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Old 31-05-18, 09:47 PM   #6
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Fine looking beastie what's the brass? lever for between the comm and the bearing housing?

Stuart.
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Old 31-05-18, 10:00 PM   #7
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Rotates the brush carrier so it can be positioned for spark free commutation under different load / speed conditions.

NHH
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Old 31-05-18, 10:11 PM   #8
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Cheers, I'd never seen anything like that before.

Stuart.
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Old 31-05-18, 10:17 PM   #9
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Is the feline happy with the brush gear?
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Old 31-05-18, 10:18 PM   #10
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Very nice, I wonder what RPM ? Does she generate ?
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