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Classic Lightweights UK
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Rotrax 'La Premiere' - 1957

Owned by Peter Underwood

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Frame 24” seat tube;  22½”  top tube;  17¼” chainstays;   ??? BB height;  Frame number 57 408 (1957); No. is at along one edge of BB; Nervex Type 45 lugs and fork crown; oval to round fork blades; dark green with ‘Rotrax’ head badge, down tube transfers and seat tube transfer.  Agrati rear ends.  Brake cable eyes (+ one cable guide) under top tube; Gear cable guide BB and eye on chainstay, also lever stop under down tube;  lamp boss RH fork blade; carrier eyes on seat stays; mudguard eyes on ends.
Wheels Weinmann 27" HP 40h rim Airlite rear s/f double-fixed hub. Dunlop Light Alloy 32h rim on Blumfield s/f front hub; 15/17 DB spokes;  Continental 27 x 1 1/8 tyres. 
Chainset BSA 5-pin chainset with 46T x 1/8" ring, 6½” cranks; TDC bottom bracket
Pedals Lyotard Marcel Berthet platform pedals with Christophe clips and toestraps
Gears Single-speed fixed with 19T sprocket (65.4") or 20T (62.1")
Brakes GB Coureur Plus levers and stirrups with rubber hoods
Stem/Bars GB alloy spearpoint stem 3½” with GB alloy Maes bars with ferrule
Saddle Brooks B17 Swallow on alloy 27.2 seatpost
Extras Mudguards when fitted – white Bluemels. This is now my 'wet-weather' fixed-wheel machine being the only one I have with mudguards.

Having been threatened with a visit from the Somerset Style Police (C.O. Peter Lowry) I have re-taken these images with the BSA ring in the correct place on the cranks, i.e. the 'S' opposite the crank.

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Above right and left, Nervex 45 head lugs from side and front
Centre: Seat cluster

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Drive train - BSA 46T 5-pin chainset with ring mounted in the correct way in relation to the cranks!,
 Lyotard Marcel Berthet pedals, 19T fixed sprocket Christophe toeclips and straps

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Wrong, wrong, wrong!
'S' should be opposite crank as above