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MG TD TF 1500 - Dynamo Identification

I am trying to identify a Lucas dynamo. I wonder if anyone out there can help me? The markings on the brass plate are:-
Special Equipment
G45YV Type V58
Model 737
228038

Any information on this unit will be very much appreciated.
Bob
R. K. (Bob) Jeffers

Check with some of the auto electric shops in your area, particularly any that are or were Lucas authorized service centers. A lot of them have the old Lucas books that Identify all of the starters, generators, regulators, etc. that were used over the years. Good luck - Dave
David DuBois

Bob,
I have Lucas master catalog, 1945-60; 228038 is not listed as either a valid or superseded number. No model designation begins with "G", most are "C" for "concentrically mounted armature".
45 = 4.5" dia yoke (case)
Y = voltage control (as opposed to 3rd brush type)
V = ventilated
C45YV-3 is a typical "model" (Lucas usage) designation and a lot of them have similar part numbers 228xxx
Many of the 6 digit part numbers for complete units are superseded to 5 digit numbers.
They clearly changed the designations as to "Model" "type" etc. In particular, the numbers for complete units changed to 5 digits while 6 or more digits were kept for parts. "Prior to the introduction of the five-figure numbering system all units bore an individual six-figure number, which gave no indication of possible interchangeability. The five-figure numbering system, with its use of suffix letters, clearly shows that all units bearing the same basic number are interchangeable as a unit"
My conclusion is that your unit is pre-war, since almost all listings, except for a very few early ones, in my catalog show the 5 digit numbers for complete units.
As an aside, the catalog calls them "generators". which would account for the "G" in your designation - as opposed to "A" for alternator. CAV, which Lucas owned by this time, used "G" for "generator" and "D" for "dynamo" - and we all thought they wuz the same!
FRM
FR Millmore

To FRM -- Thanks so much for taking the time to look that unit up. I agree it is prewar, puported to be for a TA but it hasn't the P/N listed in "Ball's" manual as the TA dynamo. Also the fact that it says "Special Equipment" kinda throughs a monkey wrench in the identification process. I have a copy of Lucas "Test Data" Publication SB.222 which gives data on a lot of things but 228038 is not listed there either.
Thanks Again and keep em' on the road,

Bob
R. K. (Bob) Jeffers

Bob;; Just a wild a** guess . could it be a generator that was used on police type vehicles that required heavier duty for radios etc. I am certain that the generators were larger in physical size also.
Sanmdy Sanders
conrad sanders

To Conrad --- That it was for Police cars or a similiar application is my guess also. But I would especially like to get the max. Amps it is rated for. I will check the diameter to see if it measures 4.5". My information tells me that the std. TA dynamo was rated at a measly 11 Amps.
Thanks for taking the time and effort to look at the info you have.

Bob
R. K. (Bob) Jeffers

Could it be for a J2 midget. This would be special purpose indeed. A friend of mine has one and he says that it has a vertically mounted dynamo, that drives the overhead cam. A very early car with an overhead cam (around 1933). This could be a rare and valuable part !
Larry Ayres

To Larry Ayres -- Don't think it could be J2 because it has the usual fitting for the tach drive.

I got my jewelers loupe out and looked at the brass plate again. What I had thought was a "G" turned out to be a "C" with a nick from mishandling etc. With that change in the description I found a type V58-1 that had a 228331 number and a rating of 13 Amps. My suspicion now is that 228038 has been superceded by 228331. Can anybody confirm or shoot holes in that?

Sure would like to get the straight scoop on this thing.

Bob
R. K. (Bob) Jeffers

Bob,
228331 not listed in my book either. Nor is any "type V58" , although there are a lot of "types" listed. Lucas uses "model" numbers with 3 digits for many things, like lamps. It indicates a basic design that is modified by interchangeable pieces. For lamps this would include lenses, sockets, lead lengths, etc. So finding other "Model 737" might be fruitful. As I said above, this "model" designation is distinct from the "C45YV" which is referred to as "Model" in the 45-60 catalog; evidently the usage changed for generators at or prior to 1945. Try on the prewar board.
FRM
FR Millmore

This thread was discussed between 15/08/2005 and 18/08/2005

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