
LOT 207
Offered from the National Motorcycle Museum Collection 1939 Ariel 599cc Model 4F Square Four Registration no. JFC 85 Frame no. P1797 Engine no. EE587
Sold for £20,700 inc. premium
Lot 207
Offered from the National Motorcycle Museum Collection, 1939 Ariel 599cc Model 4F Square FourRegistration no. JFC 85 Frame no. P1797 Engine no. EE587
Offered from the National Motorcycle Museum Collection
1939 Ariel 599cc Model 4F Square Four
Registration no. JFC 85
Frame no. P1797
Engine no. EE587
1939 Ariel 599cc Model 4F Square Four
Registration no. JFC 85
Frame no. P1797
Engine no. EE587
Designed by the legendary Edward Turner, Ariel's Square Four was first shown at Olympia in 1930. Unique at the time of its introduction, the 'Squariel', as it was swiftly dubbed, featured a single block of four cylinders and twin geared-together crankshafts with pistons phased at 180 degrees. The crankcase was split horizontally, unusually for a motorcycle engine of the period, while the vertical valves were operated by a single overhead camshaft. Although launched as a '500', the Squariel was soon enlarged to 601cc with an eye on the important sidecar market, this bigger 4F6 version being made available for the 1932 model year. Added to the range in 1937 was the totally redesigned Model 4G, with 995cc overhead-valve engine, making it an even more enticing prospect for sidecarists. Dropped after 1936, the '600' 4F reappeared for 1939, redesigned along the lines of its larger sibling. Not revived after WW2, the overhead-valve 4F is one of the rarest of 1930s Ariels.
This rare Square Four variant has been restored by the Museum, as commemorated on the attached silver plaque, and comes with an old-style continuation logbook and an old-style V5C document. The machine's mechanical condition is not known; accordingly, prospective purchasers must satisfy themselves with regard to its condition, completeness, correctness, or otherwise prior to bidding.
This rare Square Four variant has been restored by the Museum, as commemorated on the attached silver plaque, and comes with an old-style continuation logbook and an old-style V5C document. The machine's mechanical condition is not known; accordingly, prospective purchasers must satisfy themselves with regard to its condition, completeness, correctness, or otherwise prior to bidding.
Footnotes
As with all Lots in the Sale, this Lot is sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness, and originality prior to bidding.
Saleroom notices
Please click the link to view the walkaround video of Lot 207: click here







Additional information
Looking for a similar item?
Our Motorcycles specialists can help you find a similar item at an auction or via a private sale.
Find your local specialistSpecialist section

Auction Viewings
- 9 December 2020, 09:00 - 17:00 GMT
- 10 December 2020, 09:00 - 17:00 GMT
- 11 December 2020, 09:00 - 17:00 GMT








