Suzuki TR750/XR11 Replica Racing Motorcycle
Frame no. TR750-62870
Engine no. 47268
•Built by the vendor, a retired Formula 1 fabricator
•Original late-type frame used as a jig
•Engine rebuilt by BDK Race Engineering
•Completed circa two years ago
•Dry stored since its sole outing (at Cadwell Park)

Initially dubbed the 'Flexy Flier' on account of its wayward handling, it was a TR750 (XR11) that Barry Sheene was riding when he had that famous Daytona crash in 1975; though to be fair to the Suzuki, that was caused by a tyre failure rather than any inherent deficiency in the machine.

The TR750 had been developed from the GT750 roadster for the increasingly popular 750-class racing culminating if the Formula 750 World Championship in 1977 as the class's stature grew. For its 750 racer, Suzuki up-rated the GT750 engine with different cylinders, a dry clutch and magnesium castings; they also developed an entirely new lightweight frame, and it was this that would prove the TR750's Achilles Heel. Made from tubing that was too small in diameter, it flexed under power, hence that famous sobriquet.

Maximum power was raised from an initial 100bhp in 1972 to 116bhp for 1975 in the TR750's final incarnation. By this time the frame had undergone several revisions to strengthen it, and for 1975 the chassis was further updated with an XR14 (RG500) swinging arm and lay-down shock absorbers. At last the XR's handling was no longer a handicap, as evidenced by John Williams' Isle of Man TT victory in '76.

This replica of Suzuki's mighty TR750 was built by our vendor, a retired Formula 1 fabricator who worked for the Benneton and Renault F1 teams. Since his retirement he has been self-employed making parts for rare classic motorcycles, including for Team Classic Suzuki. The latter's Steve Wheatman lent a later-type frame to make a jig and also supplied some parts. The vendor, who has made other frames in the past, made the Suzuki's using TIG-welded 4130 chrome-moly tubing. Former Suzuki GP team mechanic Nigel Everett supplied new forks, yokes, and Mikuni carburettors, while the vendor made the fuel tank and exhaust. Other notable features include AP Racing front brake callipers and a Scitsu rev counter.

The engine was found in good condition and was passed to BDK Race Engineering, who shared the rebuild with former Suzuki factory mechanic Paul Bolton (Motocatman). Richard Adams then ran it in on his rolling road. Completed circa two years ago, the bike was ridden by the vendor at Cadwell Park (see copy images on file), since when it has been in dry storage. Unfortunately, the owner finds the machine somewhat uncomfortable to ride on account of his height, hence the reason for sale. Accompanying documentation includes invoices and bills relating to its construction and the aforementioned photographs from Cadwell.
Footnotes:
All lots are sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.

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This Lot will be auctioned on Sunday 21 April starting at 11am GMT.