Series MM wheels and brake adjuster holes

for those with Series MM sidevalve cars produced between September 1948 and February 1953
gtt1951
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Series MM wheels and brake adjuster holes

Postby gtt1951 » Mon Nov 25, 2019 5:43 pm

Hello Folks,
I have managed to purchase some replacement rims for my low-light, given the sorry state of my current ones.
Two of these rim, in the correct colour for my car - Romain Green - have no brake adjuster holes in them.
Rims with no adjuster holes.jpg
Rims with no adjuster holes.jpg (1.55 MiB) Viewed 137 times
All the other rims, including the ones currently on my 1950 car, all have these adjuster holes.
Rim with hole.jpg
Rim with hole.jpg (1.31 MiB) Viewed 137 times
Is there a known transition date from when the holes were provided?
Regards,
George.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

JohnV
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Re: Series MM wheels and brake adjuster holes

Postby JohnV » Mon Nov 25, 2019 5:53 pm

Not sure about the wheels, but the brakes themselves were modified twice in early years.

Dec 1949: Hub/brake drum, stub shaft, outer bearing & cap, steering lever modified (RHD 31790 / LHD 12338)

Mar 1951: Front and rear brake-shoe assemblies modified (RHD 90318 / LHD 89910)

If your rims are original to the car, is its serial # after RHD 31790? If not, then perhaps that's the answer.

I know you said it's a 1950, but perhaps it was registered a few days or weeks into the new year. Unless you have a Heritage Certificate with the actual date of dispatch on it.
gtt1951 wrote:
Mon Nov 25, 2019 5:43 pm
Two of these rim, in the correct colour for my car - Romain Green - have no brake adjuster holes in them.
Rims with no adjuster holes.

All the other rims, including the ones currently on my 1950 car, all have these adjuster holes.

Is there a known transition date from when the holes were provided?
I have two Minors in upstate New York. One is the 1961 Traveller my dad bought new that year in London, where I was born. It's had a hard life but is still running cheerfully at 54K miles. The second is the oldest Minor confirmed to survive in North America, a LHD high-light Tourer built in April 1949. It's a total basket case, but will be restored over the coming years.

JohnV
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Posts: 43
Joined: Fri Mar 03, 2017 10:48 am
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Re: Series MM wheels and brake adjuster holes

Postby JohnV » Mon Nov 25, 2019 5:55 pm

Further info: My April 1949 "USA" export Tourer has four wheels that I believe are original, but NONE of them has brake holes.
I have two Minors in upstate New York. One is the 1961 Traveller my dad bought new that year in London, where I was born. It's had a hard life but is still running cheerfully at 54K miles. The second is the oldest Minor confirmed to survive in North America, a LHD high-light Tourer built in April 1949. It's a total basket case, but will be restored over the coming years.

gtt1951
Minor Addict
Posts: 857
Joined: Thu Oct 04, 2012 5:01 pm
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Re: Series MM wheels and brake adjuster holes

Postby gtt1951 » Mon Nov 25, 2019 6:06 pm

JohnV wrote:
Mon Nov 25, 2019 5:53 pm

I know you said it's a 1950, but perhaps it was registered a few days or weeks into the new year. Unless you have a Heritage Certificate with the actual date of dispatch on it.
gtt1951 wrote:
Mon Nov 25, 2019 5:43 pm
Two of these rim, in the correct colour for my car - Romain Green - have no brake adjuster holes in them.
Rims with no adjuster holes.

All the other rims, including the ones currently on my 1950 car, all have these adjuster holes.

Is there a known transition date from when the holes were provided?
I have Heritage certificates - low-light build date was 27 - 28 June 1950, as a LHD car with despatch date of 30th June 1950 to Nuffield Exports,
high-light build date 5 - 6 March 1951, despatch date 14th March 1951 to a dealer in Coventry.

Both these cars have adjuster holes on their wheel rims.

George.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

JohnV
Minor Friendly
Posts: 43
Joined: Fri Mar 03, 2017 10:48 am
MMOC Member: No

Re: Series MM wheels and brake adjuster holes

Postby JohnV » Mon Nov 25, 2019 6:14 pm

Interesting! So perhaps the brake adjuster holes were ADDED to the wheels at one of those change points.

I'll ask a friend who has a Feb 1949 car to see if he's got holes or not.
gtt1951 wrote:
Mon Nov 25, 2019 6:06 pm

I have Heritage certificates - low-light build date was 27 - 28 June 1950, as a LHD car with despatch date of 30th June 1950 to Nuffield Exports,
high-light build date 5 - 6 March 1951, despatch date 14th March 1951 to a dealer in Coventry. Both these cars have adjuster holes on their wheel rims.
I have two Minors in upstate New York. One is the 1961 Traveller my dad bought new that year in London, where I was born. It's had a hard life but is still running cheerfully at 54K miles. The second is the oldest Minor confirmed to survive in North America, a LHD high-light Tourer built in April 1949. It's a total basket case, but will be restored over the coming years.


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