A four-wheel BSA

[Greybeard]

Larmar Single-seat with a BSA Engine - (1946 - 1951)

[Triton Thrasher]

Note exactly sleek, is it!

[CheeserBeezer]

Emperor's new clothes!

[Rocket Racer]

https://youtu.be/4Rysma9VxnI
not to forget the bsa 250 4 stroke scooter twin engined 3 wheeler prototype

[terryg]

The impression I get from that picture is of post-war austerity.   Especially when contrasted with the pre-war BSA Scout, a pretty car to rival early MGs in looks.

[Greybeard]

Wikipedia on Larmar vehicles:

On offer were small cars that were specially designed for the physically handicapped. The vehicles were only 80 cm wide. The body was made of plywood and aluminum. It had a side door, a seat, windshield and soft top. A single-cylinder two-strokeengine from BSA with 249 cc displacement and 8 hp was mounted in the rear and drove one of the rear wheels via a chain. From 1950, a two-cylinder four-strokeengine with 350 cc displacement and 10 hp was available.

[Greybeard]

I found this on an auction site:

Built in Ingatestone, Essex by the Larmar Engineering Co Ltd and first introduced in 1946, the single-seater Larmar Monocar was designed primarily for invalids, for whom the main attraction was its ability to fit through a doorway - the vehicle was only 28½" wide! The Larmar was powered by a BSA 249cc single-cylinder air-cooled motorcycle engine, as fitted to the Birmingham firm's C10 and C11 models, which was mounted behind the driver and drove only one of the two rear wheels. Sliding-pillar front suspension and independent rear suspension made for a relatively comfortable ride, while top speed was a giddy 35mph. More refined than the majority of invalid carriages of the day, the Larmar came with a single headlight, folding convertible hood and a windscreen, and was later made available in improved form with a 350cc engine. Production ceased in 1951.

[Greybeard]

I'd like to know if it had electric starting.

[bikerbob]

I put the name into google and it came up with one for sale at Bonhams Auctions and in the description it said that the electric start needed attention..

[RichardL]

That's not Elizabeth at the wheel , is it?

[Greybeard]

That's not Elizabeth at the wheel , is it?

As in, Her Royal Highness, Queen Elizabeth The First? How very dare you refer to our beloved Queen 👸 in such familiar terms.  Flippin colonials! 🤠
I'm sorry you had to see that your Maj.

[RichardL]

I guess there may be a resemblance.

[Greybeard]

I guess there may be a resemblance.

Oh poop, I meant Elizabeth II of course 😳

[BSA_54A10]

The engines used had an AC prefix in the engine number and a much longer engine shaft
They turn up from time to time and confuse people
There were several "invalid chairs" that used he C series engines
Remember post WWII there were a lot of people missing a leg or two .
A papular subject on the C series forum so if it has tweaked your curosity then pop over there & do a search .