In 1937 a total redesign saw the Ariel 'Square Four' re-emerge as the Model 4G, with 995cc overhead-valve engine, making it an even more enticing prospect for sidecarists. Anstey Link plunger rear suspension became an option in 1939 but would not be offered again until 1946 when a telescopic front fork replaced the previous girder type. An exercise in weight shedding saw the cast-iron cylinder head and barrel replaced by alloy components for 1949 on the revised 'Mark I', which was now capable of 90mph-plus. Introduced in 1953, the 'four-pipe' Mark II with redesigned cylinder head elevated the Square Four into the league of genuine 100mph motorcycles. Square Four production, along with that of all other Ariel four-strokes, ceased in 1959. To date, the innovative Ariel Square Four remains unique in motorcycling history; a true 'gentleman's motorcycle', this refined yet characterful machine retains an enthusiastic and loyal following and is highly prized by discerning enthusiasts. Owned by the current vendor since October 2017, this Square Four is offered in need of re-commissioning, or possibly more extensive renovation, and is sold strictly as viewed (the engine turns and the machine would respond well to detailing). Accompanying documentation includes an HMRC letter; starting instructions; and a V5C Registration Certificate.

This motorcycle is to be auctioned at our Live and Online Winter Sale, Hanger 113, Bicester Heritage, OX26 5HA.

SALE TIMES

Friday 11 December
Spares & Memorabilia (Lot 1 - 112) 9am
The National Motorcycle Museum Reserve Collection (Lots 201 – 252) 11am


Saturday 12 December
Motorcycles (Day 2) (Lots 501 – 708) 10am



VIEWING
In light of the current government guidelines and relaxed measures we are delighted to welcome viewing, strictly by appointment. All the lots will be on view at Bicester Heritage in our traditional Hangar 113. We will ensure social distancing measures are in place, with gloves and sanitiser available for clients wishing to view motorcycle history files.


Please contact Bonhams Motorcycles by clicking 'Message the seller' with your preferred date, time and vehicle registration number to book an appointment.


VIEWING TIMES
Wednesday 9 December 9am to 5pm
Thursday 10 December 9am to 5pm
Friday 11 December 9am to 5pm (Lots 501 – 708 only)


LIVE AND ONLINE AUCTION

Please note that whilst public viewing is available by appointment, the auction itself will be conducted from a remote saleroom, behind closed doors without public access, in accordance with the current government guidelines. All bidding will be conducted via Online, Telephone and Absentee Bidding. Please contact our Bids Department to register using the 'Message the seller' button.


COLLECTION OF PURCHASED LOTS

Motorcycle lots must be cleared from the sale venue by 2pm Sunday 13 December 2020. Limited collection is available until 2pm Monday 14 December, by appointment only. If collecting Monday, please access Bicester Heritage via the 'Main Gate', Buckingham Road, OX26 5HA. Please email us using the 'Message the seller' button with your collection or transport instructions as soon as possible following your successful bid. Failure to instruct Bonhams by the given time will result in your vehicle being uplifted to store at your expense, as detailed in the Conditions of Sale. Buyers should satisfy themselves that they have collected all relevant log books, documents and keys relating to their Lot(s) at time of collection.


AUCTION ADDRESS

Hangar 113
Bicester Heritage
Buckingham Road
Bicester
Oxfordshire
OX26 5HA