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Andrew Rowe

CAV regulator Unknown?

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I have a 155-2B CAV regulator , 42amps at 12 volt. Does anyone know what sort of vehicle this belongs to? I believe it is WW2 era , it has a tag on it that says it replaces 37S-5X and 37S-4XT. Dingo ? Truck ? Was there ever a book put out by CAV that listed model numbers and their applications? Any help would be useful , Cheers Andrew.

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Daimler armoured car had the 155-2B as one option, there may well have been other applications.

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dingo is the 141-1 type

 

The 141-1 was for the Mk2 Dingo. The Mk3 Dingo with two speed dynamo had the 155-4 control panel

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I have a 155-2B CAV regulator , 42amps at 12 volt. Does anyone know what sort of vehicle this belongs to? I believe it is WW2 era , it has a tag on it that says it replaces 37S-5X and 37S-4XT. Dingo ? Truck ? Was there ever a book put out by CAV that listed model numbers and their applications? Any help would be useful , Cheers Andrew.

 

 

Hi Andrew,

According to the 6MT4 Vocab, the 155-2B was fitted to Cromwell, Challenger, Centurion, Harry Hopkins, Coventry Armd Car and Comet.

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Posted (edited)

I'm looking for one if it's available? It is indeed Cromwell and Comet.

 

Centurion did also use 155, but it's a 155-8X. Also 168 as mentionned.

 

155 is a suppressed version of 141 (if I'm remembering correctly) so there's some crossover.

Edited by Lauren Child
mistake on part number and relation to 168

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Posted (edited)

This is the Cav pamphlet to look for.

 

image.jpg

 

Though I may be wrong on the difference between 141 and 155.

 

image.jpg

Edited by Lauren Child

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Ah, 141 looks very different inside - I was mistaken on the difference.

 

image.jpg

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Centurion is 24volt and uses a 168-3. I agree with the others.

 

Hi Adrian,

Just shows that errors crept in War Office publications and were never amended !

Actually I can add another vehicle to the list that used the 155-2B, that is the Humber Scout Car Mk1 and 2 (this comes from the vehicle parts book)

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Given its location, I suspect it is from a Daimler A/C. Unless it's a more recent import!

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You can read me like a book! Yes Adrian I think I concur with you, as I picked up some brand new control boards for the Loyd carrier along with this one, quite an interesting subject though , Cheers Andrew

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My Humber Scout parts list just shows it as a 155-2. I wonder what the B signifies?

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My Humber Scout parts list just shows it as a 155-2. I wonder what the B signifies?

 

Adrian,

My parts list is First Edition August 1944, definitely 155-2B.

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My Humber Scout parts list just shows it as a 155-2. I wonder what the B signifies?

 

Alas no idea on what the B means on the end model number - my guess would be a revision to the original, although looking at a parts list for a similar board (189) the letters used are A, B, M and T with no obvious difference.

 

If it's a read across from the main number, the letters seem to mean different things on different regulators, so 37A indicates ammeter terminals on a 37, while 155A indicates compensated voltage on the 155.

 

On the 75 (which will be popular with the softskin fans on the forum) 75B indicates for use with dynamo without field resistance, and 75BT (as on Bedford, Ford etc.) is the same but with a special low temperature regulator.

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Adrian,

My parts list is First Edition August 1944, definitely 155-2B.

Very interesting, mine is dated July 1943........ It only covers Mk I however!

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I have a 155-2B CAV regulator , 42amps at 12 volt. Does anyone know what sort of vehicle this belongs to? I believe it is WW2 era , it has a tag on it that says it replaces 37S-5X and 37S-4XT.

 

37S series seemed to use H5 regulators & BCK-1 cutouts.

 

The details of the replacements appear in EMER POWER 0 133 Table 1 1955

 

Scan0063.jpg

 

As far as applications go, these were the RAF applications in 1954 taken from AP 25151E Section 16E MT Electrical Equipment

 

141-1 Humber LRC IIIA

141-2 Bedford MWR

141-3X Bedford QLR

142-1 Bedford MW, QL

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