50.5cm Witcomb c.1979 Vintage British Steel Road Bike Frame Set
✓ Original vintage frame - built in the 1970s
✓ Lightweight for the era - just 2.5 kg
✓ Suitable for historic cycling events such as L'Eroica
✓ Thoroughly checked over & photographed in detail
✓ Worldwide shipping
Perhaps one of the best regarded, and longest-lived British lightweight frame-builders, Witcomb built superb race bikes for 80 years from Deptford, South London. The first frames bearing the name Witcomb were built in 1928, by Tom in his spare time from his cellar. After serving in the second world war his son Ernie started to learn the business side of things and began organising races and club rides. In 1951 Ernie bought out local builder E.A Boult and renamed the business 'Witcomb Lightweight Cycles Ltd', his son Barrie started to race himself and began building frames on the premises in 1960. Over the next 20 years the business expanded in the UK with more shops opening, a clothing line and increasing international exports, and by the early 1970s there was sufficient interest in the USA for a new brand; 'Witcomb USA'. Amongst Barrie's trainees for the new USA brand are Richard Sachs and J.P. Weigle, both extremely highly regarded US builders who are still working now. Known as the 'Rolls Royce of cycles' incredibly this small shop produced frames used in the Tour de France and the Olympics, and continued to produce frames in the traditional way on an open hearth until 2008.
This delightful compact Italian style Witcomb road frame was built in 1979, and is a lovely example of the high end machines being built by this famous company at the time. With finely cut lugs, minimal cable guides and a lightened BB shell, this Reynolds 531 frame was built to go fast. The frame has been touched up around the original transfers, although the down tube decal has been replaced. The colour used is indeed close to the original but due to the size of the touch ups they are quite noticeable, it does however look good from a distance and has protected the frame well whilst retaining most of the original paint.
If you're taking part in L'Eroica or a similar vintage event, this frame is of the correct age, so you won't be disqualified for being a rule breaker!
The frame's been carefully checked by one of our mechanics to confirm the alignment's correct and there's no damage to the threads. If there are any minor issues worth noting we will do so in the overview section below. Please take a good look at the detailed photos so you can see the cosmetic condition of the frame before you buy.
Condition Notes -
One of the eyes on the 2nd top tube cable guide eyes has broken, it does still hold the cable though as one eye is still intact.Era -
BritishFrame Material -
2.5 kgStock Code -
Size Guide* - Small (Approx 29 1/2" Inside Leg)
Seat Tube (ctc) - 50.5 cm
Top Tube (ctc) - 52 cm
Head Tube - 101mm
Chainstay Length - 41 cm
Wheelbase - 95.5 cm
*This is just a guide, not a guarantee the frame will fit as every rider is different. If you're unsure of your size we'd always recommend trying out a bike with similar frame dimensions first.
Rear Spacing -
120 mmFront Spacing -
100 mmSeatpost Diameter -
27.2 mmWheel Size -
700c/28"Brake Fixing -
External Hex NutFront Brake Drop -
46 mmRear Brake Drop -
42 mmBottom Bracket Thread -
English/British/ISO ThreadHeadset Thread -
Standard ISO (24 TPI - British/Italian)Headset Stack Height -
38 mmFork Crown Race -
26.4 mm (ISO)Shifter Fittings -
Downtube Braze-OnHeadtube Internal Diameter -
30.2 mmSteerer Internal Diameter -
22.2 mm (Standard)
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▼SHIPPING, TAXES & RETURNS
We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 days but larger items and orders placed before the weekend can take an extra day or two to process.
We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.
We don't charge VAT, however, if buying from outside of the UK please remember that there may be import fees to pay directly to the delivery company before receiving the order. Unfortunately we can’t advise on the exact costs as it varies from country to country, so please check your national rates before purchasing.
Seat Tube (ctc) - we measure from the centre of the bottom bracket shell up to the centre line of the top tube to give a consistent measurement regardless of frame design (ctc means centre to centre).
Top Tube (ctc) - this is measured from the centre of the head tube to the centre of the seat tube, along the centre of the top tube.
Chainstay Length - measured from the centre of the bottom bracket shell to the centre point of the rear dropout.
Wheelbase - measured from the centre of the front fork dropout to the centre point of the rear dropout.
Front & Rear Spacing - measured from the inside of one dropout to the other. The dropouts on steel frames can be stretched or squeezed a few mm but it's always best to avoid this if possible, aluminium or carbon frames should never be stretched.
Brake Drop - measured using wheels of the relevant size for the frame, as stated in the technical info section.
Headset Threads - although it's generally recommended to match threaded parts exactly, with headsets you can technically mix and match, unless you have French or the obscure old Raleigh threads, in which case you need to stick to that type.