1931 Ariel Square Four 500cc Model 4F engine design by Edward Turner.
Edward Turner (January 23rd, 1901 – April 15, 1973) was a famous British motorcycle designer. He was born in Camberwell in the London Borough of Southwark, London, on the day King Edward VII was proclaimed King.
Following a rather basic schooling he joined the Merchant Navy as a radio operator, aged 14. By the 1920s he had left the sea, and was running a motorcycle shop in South London where he showed the first signs of what would be a distinguished career by designing and building his own "Turner Special". In 1927 he joined the Ariel Company where he was part of the team that developed the famous Ariel Square Four, and by 1932 had become Ariel's chief designer.
Rare 500cc model not 600cc or 1000cc.
The last picture shows the engine designer Edward Turner with the 1931 4F 500cc
Turner had shown the design to several motorcycle manufacturers (including BSA) seeking a buyer for the innovative design but only Jack Sangster at Ariel was interested enough to offer the young engineer a job. At its public unveiling at the Olympia Motorcycle Show in late-1930 the 1931 Ariel Square-Four 4F caused a huge sensation, even over the new Matchless Silver Hawk narrow-angle v-four OHC.
If you cannot afford to splash out £300,000 'Three Hundred Thousand Pounds' on a Brough Superior then this is possibly or probably the next best great British superbike for £35k, Great investment opportunity.
You are not going to find another one.
ULTRA ULTRA RARE 1931 Ariel Square Four 500cc OHC / Over Head Cam model. This machine comes with a current V5C and is on its original number which is transferrable. I imagine it is worth something, but I am not an expert. WO was issued to the Monmouthshire area in 1931. The bike is tax and MOT exempt at this age.
This bike has been in the ownership of one family from new and is only on its third keeper. The bike is basically un-restored and runs like a watch, All original fittings, and everything works at it should. It has clearly had a new exhaust system though at some point. The engine numbers started at 101....this is engine number 220....so effectively the 119th ever built. Is this therefore the oldest unrestored square on Earth ? has anyone got an older one out there in original condition ????? If so....I would love to hear about it. The factory records have been checked and the engine and frame numbers correspond. This was one of five built in March 1931 and this one was despatched to Bowens Garage LTD in Monmouthsire. You will note that this machine carries the original dealers brass plates on both front and rear mudguards indicating again that these are the correct originals as fitted to the machine.
I can say that I have ridden the machine today around a large car park for several minutes and it performed well. This is not the same as a proper road test, but tells me that the clutch, gears, brakes etc all seem to be working alright. It is charging strongly, and revs freely. Even the original brass map light works. Wheels and rims look authentic. This is a four speed hand change model.
So....this is a rare opportunity to buy one of the worlds first super bikes. Possibly the oldest unrestored Square left on Earth. Note, this is the engine where the crankcases spilt horizontally, like the Japanese bikes do, what a pity they did not continue with this type of design. Oil is held in the engine in the same way and when I look at this machine...it truly is years ahead of its time.
All that said.....this is looking for that rare collector / rider who will appreciate what this actually is. The question of restoring it or not will be up to you. I would love to see this out at shows and actually being used. If you buy this....you are pretty much guaranteed not to meet another as authentic as this. I would look at taking early machines in exchange....but am happy with a straight sale. No credit cards or Paypal on a deal like this, cheque, bank transfer, bankers draft, switch card or £££££....all good.
Viewing is vary much advised. Please call and ask for Frank on 020 8997 2421 or 07973 11 12 13 for an appointment.
Ariel Square Four . Rare Mark I model. Only 3.922 ever build. The Mark I models do come with the all new full aluminium engine. This not only kept the bike running cooler, it also safed 30 pounds of weight to his predecessor.
These deluxe versions, look fantastic with its chrome tank, red and black .....
A rare find...
Just imported from California... rare there as well
1948 Ariel Square Four
Its been given the US Bobber look at some point... Bates rear light etc
New tyres fitted
New front brake & clutch cable
runs & rides
This must have been like a space ship when new in 1948
We currently have for sale this beautiful Ariel Square Four.
Manufactured in 1953 and showing only three owners it has covered 40,000 miles .
This bike was featured in issue 296 classic bike guide February 2016, an issue of which will be with the bike.
Finished in Maroon and run and enjoyed by its .....
Beautiful Ariel Square Four 1935 Four Cylinder from the great Sir Edward Turner.
A piece of mechanical engineering ahead of it`s time.
Wonderful condition, with smith speedometer and clock..very rare to find.
Motorcycle in exhibition condition with certificate. Ignition was modified to battery .....
Frame No SC 5—
Engine No JJ 7—
Gear Box No G 106
The bike has had a complete restoration by the previous owner. The engine starts easily, it ticks over very smoothly. The engine does not have any nasty rattles or knocks it does not smoke It has an concentric carb fitted to make it run better more .....
Just in from a collection of lovely motorcycles, this very good condition Ariel square four
We have no information on this motorcycle at present, but as soon as the owner furnishes us with the paperwork I will add all the history and information to the listing
A very nice square four, viewing .....