V-Twin- Specials - more engine innovators
Tony West's 1000cc supercharged B31 V-twin
Greg Summerton's J.A.P and Tony West's 2 B.S.As....and the other side of the v-twin showing supercharger and sidecar
Tony West, in South Australia, has built a 1,000cc v-twin from 1934 G11 BSA (1000cc sidevalve) crankcases. and post-war B.S.A. B31 top ends and a BSA frame. He also built a 940cc B.S.A. single, based on a B31. Tony races the bikes (sidecar speedway) and is a friend of Greg Summerton (see above). Greg says, "The single is through studded.....they pass right from the top of the heads down through the cases, past teh mains and out the bottom, through a big piece of angle iron and some more nuts....and it stays together quite well, 3 seasons now without a problem.....The twin has steel plates bolted inside the crankcases on each side of the crank that he built himself. Steel plates are screwed to the tops of the case mouths and the whole thing is through studded ... but not right thru the cases like the single." Thanks to Greg Summerton for this.
Mystery v-twin speedway engine
Shaft-driven overhead cams, leather universal joints and other Heath-Robinson mechnisms. Thanks to Greg Summerton for the picture....
UPDATE: Antero in Finland a.k.a.Chopper Man, has solved this one. the bike is a Packer, and is on display in the Sammy Miller Motorcycle Museum. It is a modern imitation of an early board-track racer - a 1000cc v-twin with 3 desmodromically-operated valves per cylinder.
Here is the link:
Thi is being built in the Netherlands - M100 or M120 topends on Harley cases.
Fantasy Goldstar v-twin
Big Ned 3,000cc v-twin
Built by Mark walker in Australia,a 3000cc v-twin with rotary valves and nitrous injection, it has a fork-lift clutch, front brake drum made from an oxygen cylinder, exhaust pipes made from fire extinguishers
"This is the Albion. The engine is home made. Crankcases are made from plate steel. The crank runs on massive bearings. I recall that it ran for several months without any oil in it. " I think this engine has M20 cylinder heads.
"Engine: by owner... 1027cc 120 degree v-twin, bore & stroke 94x74 mm, compression rate: next to nothing, solid vanadium valves of unknown origin (cut with an angle grinder & drill), Citroen 2CV pistons & split bore barrels (one slotted into a third of another), one BSA M20 head, one BSA M21 head, four BSA cams (M20, M21, B31), two left-hand AMAL monobloc carbs one homemade manifolds, plumber's PVC pipe between carbs and air-filters, Honda CB250 oil pump, Honda C90 points box and CB750/4 points, mild steel welded crank cases, BSA M20 crank with extended undersize homemade crank pin & 48 (!) roller bearings
Gearbox: '54 BSA casings, '48 BSA internals,BSA six-spring clutch
Exhaust: wheelbarrow handles as header pipes, Jawa 2-stroke silencer to collection box, twin Norton drag pipes jammed on
Frame: Jawa/Iron Bar/Kawasaki/BSA, lots of weld by owner with stick welder, braced with iron bar everywhere
Front: Jawa TLS wheel, one-off springers with Jawa springs & garden gate, pre-unit Triumph headlamp with Jawa lens, Jawa speedometer
Rear: BSA A10 QD wheel, 1960s rim
Bodywork: Unknown front fender, old British gas tank, homemade seat, unknown rear fender"
1000cc Velocette "Vulcan" v-twin
Bob Higgs took 9 months to design and 4 years to build build this 60-degree 1,000cc Velocette v-twin
Chris barber's 1340cc desmo-Hog
Ducati desmodromic top ends on Harley crankcases...
Royal Enfield v-twin.... Here is a 1930 K-model from Finland. It has a homemade 4-valve conversion and 1140ccm. Builders goal is to create "world's fastest Royal"
Hulster 8 Valve
Stellan Egeland of S.E. Service in Sweden, has made this machine, with a Harley Knucklehead bottom end and top end completely designed and built by himself. the cyclinders are bronze and the heads aluminium: "The cylinderheads are of the semiradial type where no less than three exhaust rockers are needed to operate the valves that points 45 degrees away from eachother, the intake valves are inline."
S.E. Service website: http://www.seservice.se/mainpage_en.htm
Download video file oH Huster 8 Valve running: http://www.seservice.se/Hulster.wmv
Burt Munro's Indian Scout
There are now some replicas that people get confused with the original:
Burt Munro (who lived in Invercargill, New Zealand) started modifying his 600cc 55mph v-twin Indian Scout in 1926 and made his own flywheels, barrels and pistons, using sand from the beach and old tin cans for casting. He ended up with a 950cc displacement and went to Bonneville 3 times in the nineteen sixties and set 3 world speed records, and once qualified at over 200 mph. Burt's story has been made into a great film starring sir Anthony Hopkins, called The World's Fastest Indian
In Christchurch, New Zealand in the early nineties, John Britten designed and built a v-twin that won several world speed records including fastest top speed at the Isle of Man (1993) and it also won against the big manufacturers at the Battle of the Twins at Daytona. The Britten V1000 was a Water-cooled 999 cc 60 deg V-Twin quad cam 4-stroke
The tech specs of the engine can be found here: http://www.britten.co.nz/info/infotechinfo.html
JAP Double Overhead Camshaft v-twin made by Alec and Dave Card
The Card family, who now own the J A Prestwich name and are producing JAP v-twins, made this wicked DOHC 8-valve twin from 2 singles
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