Raceparts Historic 750 Formula
The 750 Motor Club’s ‘Historic’ racing series, for cars built to early eras of 750 Formula regulations. Primarily comprising Austin Seven Specials and later Reliant-engined Formula cars, new cars have to be built within careful guidelines to ensure compatibility and enquiries from other historic cars of a similar style are welcomed.
The range includes Austin 7, Reliant engines (642cc and 748cc OHV, 747cc side-valve), Ford 1172 side-valve and Climax; F3 500cc class must comply with 500 OA rules.
This varies a lot dependant upon the class in which the car runs. It can be anything from leaf springs through to ‘coil-overs’.
In the Austin 7 classes, brakes are restricted to the Austin 7 drums. In the other classes, the use of disc brakes is not permitted unless part of the original design.
Classes A & B must use the standard A7 casing; alternative ratios may be fitted, either 3-speed or 4-speed, plus reverse.
Class A restricts width and profile; classes B & C will use an affordable control tyre in 2017 to equalise performance, available both new and secondhand.
There are 10 rounds in the 2017 season, some of which are ‘double-headers’ spread across one race weekend.