Rotrax Super Course - 1949
Owned by: Peter Underwood
| Frame | Rotrax Super Course - Frame No. 49409 - 25" seat tube' 24” top tube; round forks - road rear ends - mudguard eyes - pump pegs on down tube - 17" chainstays - 42" wheelbase - top of seat stays ‘sculpted’. Finished Dark green with contrasting seat panel and bands, chrome head lugs, fork crown and fork ends. Also chrome rear ends. |
| Wheels | 27" early Weinmann HP rims on Airlite small-flange hubs |
| Chainset | Chater-Lea 3-arm with round cranks.
Modern chain will be replaced with Reynolds now that length is
established and testing completed. |
| Pedals | Lyotard Facheaux |
| Gears | Osgear 4-speed with de-tensioner lever and modified jockey wheel |
| Brakes | GB Hiduminium stirrups plus early GB levers with
adjusters in the top of the hoods |
| Stem/Bars | GB alloy spearpoint stem with early GB alloy Maes
bars with engraved ferrule |
| Saddle | Brooks Swallow |
Below: Two views of the Osgear tension arm with de-tensioner cable which runs through a short 'free-floating' silver outer cable. On this set-up the outer cable is held in a clip on the tension arm bracket.
Riders of this era used to modify the jockey wheel on the tension arm by using the Cyclo version as here.
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Left
and Right: Views of the early Super Course head lugs. Later versions had triangles cut into the front-facing spearpoint.  Above: Osgear lever with additional de-tensioner cable control |
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 GB Spearpoint alloy stem and
early GB Maes bars with ferrule engraved 'Type Maes' on left and
'GB England' on right |
 Early GB levers with brass cable
adjuster in the top of the hood, which is slightly darker in colour
than the lever
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