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For sale:

The totally unique Wadkin-Snaith Brooklands SS (Sprint Special) classic racing motorcycle. inspired by the Sunbeam, Blackburne, Excelsior, Brough Superior etc. motorcycles raced at the famous Brooklands circuit. Entirely designed and built by artist and engineer Carl Wadkin-Snaith to represent motorcycles raced at the famous Brooklands Circuit in the late 1920's. No castings are used; all engine and gearbox parts were machined from solid billet in my home workshop on manual machines; ie no CNC. It is easier to say what I didn't make; for example the tyres! Below you will find a selection of photos taken during construction and a detailed description of it's conception, design and manufacture, plus videos of sprint races and action at the Brooklands Museum Test Hill.

A one of a kind motorcycle perfect for a museum or collector.

 
 
Wadkin-Snaith Brooklands SS collectors vintage motorcycle for sale
 
 
CAD drawings of the Wadkin-Snaith Brooklands SS collectors for sale
 
  Billet crankcases of the Wadkin-Snaith Brooklnands SS vintage collectors motorcycle for sale   Machining billet crankcases of the Wadkin-Snaith Brooklnands SS collectors classic vintage motorcycle for sale  
 

Initial machining of the crankcase billets complete

  Machining outside of drive side crankcase  
  Crankcases part finished of the Wadkin-Snaith Brooklnands SS collectors classic vintage motorcycle for sale   Machining timing side outer webs of one off collectors classic  motorcycle  
  Trial assembly   Machining timing side crankcase webs  
  Cylinder barrel billetof the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Cylinder barrel finished of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Billet for the cylinder barrel has arrived   Trial fit of newly machined barrel  
  Machining combustion chamber of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Cutting ports and valve guide holes of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Machining combustion chamber   Machining ports and valve guide holes  
  Trial assembly of head to barrel of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Machining fins of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Trial assembly of head to barrel   Machining fins over ports  
  Camshaft billet has arrived for the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Finished camshaft of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Camshaft billet, much careful machining to come   Finished camshaft and timing gears  
  Half a gearbox of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Gearbox half of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Inside gearbox half   Much, much later!  
  Made in England the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Clutch of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale  
  Made in England   Conversion of DR750 clutch to chain & dry operation  
  Oil pump of the Wadkin-Snaith Brooklnands SS collectors vintage motorcycle for sale   Petrol tanks of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Making the oil pump   Making the tanks  
  Top yoke of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale   Throttle of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Billet top yoke   Finishing a special throttle  
  Pazon ignition of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale   Stem of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Timing the Pazon digital ignition   Finished yokes, stem and steering damper  
  Making the frame of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale   Trial fit of engine of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Beginning the frame   Trial fit of engine and gearbox  
  Machining lever clamps of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale   Logo engraved on the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Handlebar lever clamps emerging from bar   Finished lever clamp with logo engraved  
  Choke control part of the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale   Controls finished on the Wadkin-Snaith Brooklnands SS vintage motorcycle for sale  
  Choke control base emerging from bar   Finished controls engraved and nickel plated  
  Wadkin-Snaith Brooklnands SS vintage motorcycle for sale seen without the Brooklands can  
 

The Wadkin-Snaith Brooklands Sprint Special 500 without Brooklands 'can'

Conceived as a racing motorcycle that might have been built near the legendary Brooklands circuit 1929ish, the bike is not a replica of any prototype, rather I tried to capture the spirit of the time and place. The late 20's was a time of experiment and transition in racing motorcycles, giving me maximum freedom in design.

It was never intended it to be a concours exhibit; rather an oil spattered vintage racer. CAD design work began in April 2012. Much midnight oil was spent with my artist's hat on to arrive at an aesthetically pleasing result, for example the cant of the engine was varied in 2° increments back and forth until I was happy.

Metal cutting began in late June 2012, all work carried out at my home workshop in my spare time, no castings are used, everything carved from solid billet on my manual milling machines and lathes (no CNC). A vast amount of time was spent hand finishing the billet parts which I then bead blasted to give the illusion of castings. Much of the really tricky machining, of crankcase webs for example, was done on my trusty pre-WW2 Alexander Master Toolmaker milling machine, whereas the heavier work was completed on my large turret mill.

I agonised over the carburettor for some time, even considering making my own but decided to go with the Mikuni Yamaha SR500 race carburettor as I hoped this would avoid aggravation setting up, this proved to be the case, only needing a change of pilot jet.

The frame is my own design and manufacture and aimed at spinning the rear wheel rather than lifting the front. I took a punt at the unidentified bare girder fork blades on eBay after no one showed interest, these were then bushed and a stem, spindles, links, yokes, steering damper etc made to suit.

I bent the handlebars myself for the authentic Brooklands style, this proved to be a mistake as they were incredibly uncomfortable and impractical, they have since been replace with some flat bars. I was not happy with the quality of commercial classic style throttle and handlebar controls, the chrome plate just looked totally wrong too so I carved the clamps, choke control and a quick action throttle from billet steel. None period ball end levers are necessary to comply with ACU Regs.

Apart from the exhaust pipe and handlebars I dull nickel plated everything myself. Fasteners are all stainless steel, the heads of commercial bolts were machined flat to be more in keeping with my period. Naturally I used slotted screws and traditional fabric insulation tape where necessary.

A final touch was to design a logo and have it hand painted on the tanks by our daughter. I've since engraved the logo on various other parts such as ignition cover, steering damper and handlebar controls. I must say it was very satisfying to engrave 'Made in England' on the crankcases and gearbox housing.

Having made some starting rollers; on the 3rd August 2016 I spun the engine over, dropped the clutch and the engine fired up almost instantly, a very satisfying moment after over 1000 hours in the workshop!

Since then I've refined various features, added an oil filter in the scavenge return and making primary chain adjusters. At the Brooklands Museum the bike flies up Test Hill, in fact the wide ratio DR750 gear set is ideally suited to the engine.

My Brooklands SS has been exhibited at two shows and won an award at both. It is always satisfying when older enthusiasts are thrown by the bike believing it to a genuine 20's racer.

 
 

YouTube video starting the Brooklands SS

YouTube video first ever run at Test Hill Brooklands Mueseum

 

YouTube Video Construction and first race with hand change

 

 
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