V-Twin- Specials - engine innovators
Sid Leitch's "AJS Golden Streak"
Sid's Bike Shed. Sid Leitch is a legend. He restored a model X Matchless v-twin in 1982. He went on to design and build a bike that AJS never made but should have - the AJS Golden Streak. It is an AJS/Matchless - Brough concept. The exhaust note is gorgeous! He has also just completed a Matchless OHV flat-tracker and is starting a v-twin with twin exhaust ports on each cylinder that will have four exhaust pipes like a Koehler Escoffier - one of the most beautiful bikes ever made.
Model X Matchless .................................1914 Matchless 8B ..........................AJS Golden Streak .............More on the Golden Streak conversion ......MX2 Trackmaster intro
Matchless Flat-track machine part 1-4.
UPDATE: MX2 Trackmaster with twin port heads and twin carbs running!! I missed this vid before...it's been up for 2 years!
EuroDave's Kohler 725
Another genius, EuroDave, in NZ, has been constucting a 725cc Kohler 90-degree v-twin (lawnmower engine) cafe racer, which will be supercharged using a Subaru supercharger. Here is the build blog:
and flickr picture sets (browse older and newer directions): http://www.flickr.com/photos/55034674@N05/5565761729/in/photostream/
Gunnar Sorensen's 1000cc "Great Dane"
Gunnar Sorenesen in Denmark, has created a 1,000cc 55-degree v-twin engine, and bike which is currently on display in Egekov museum (note different front brake plate in these pics). Here is the motorcycles page of Gunar's website (in Danish):
Here is the English translation:
Doug Fraser's 1140 cc BSA B66 v-twin
Doug Fraser, of Melbourne, Australia, put two BSA B33 top ends together on home-designed crankcase, with a hybrid crankshaft.
Doug Fraser's BSA Empire Star v-twin
Doug Fraser also created this 1120cc Empire Star v-twin...here is his website:
LATEST DOUG FRASER MACHINE!
E120R 1200CC V-TWIN SUZUKI FRONT END, HONDA GEARBOX, PORSCHE COMBUSTION CHAMBER DESIGN, CYLINDERS SAME SIZE AS GOLD STAR:
Traupel-V2-Eigenbau "Düse V2" or "Nozzle V12" (as it is a 1200)
In Germany, Rainer Traupel built this air-cooled 60 degree 1.2 litre v-twin with 4-valve DOHC heads - Jawa heads, flat-slide carburretors, Alfa Romeo exhaust valves, Kawasaki GPZ gear cluter in a pre-unit home made casing
Tony Harris's 55 degree, 750cc Ariel v-twin
Tony Harris's 55 degree, 750cc Ariel v-twin in a Norton Featherbed frame - see article in Classic Bike Guide, March 2011
Gerald Fitzpatrick's B50 1000cc 60 degree v-twin
Magazine article on the B-50 v-twin
"Evans v-twin" 1000cc
Evans v-twin - 2 B-50 top ends in a featherbed. Mr. Evans had a chat with Mr Fitzpatrick, who made the B50 twin above, before going ahead with his project.
Magazine article: http://b50.org/mags/bbmjan88.PDF
Anssi Kantonen's 1150cc Rocket Reducer
In Finland, Anssi Kantonen matched a pair of 1919 Vickers crankcases with cylinders and heads from an old air-cooled VW camper, with more VW parts inside the timing chest. See article in Back Street Heroes magazine, issue 318 (October 2010)
Robin Jackson's 1130cc 1951 NorJap
This engine was built by Brooklands engineer, Robin Jackson in 1950-1951, and consists of modified JAP v-twin crankcases, original Alfin barrels and two Manx Norton cylinder heads. It was used in a Cooper car and won many race. See story here:
Bailey Rudge 1000cc v-twin:
"...Following the return to peace, the marque was further developed by AL Bailey. Bailey experimented with twin cylinder machines along with the bread and butter work on the natural development of the standard Rudge machine."
A few examples of Bailey-Rudge machines survive; the largest being an experimental 1000cc twin owned by Dave McMahon who continues to develop this machine in an attempt to solve the multiple problems in the oiling system.
Ian Douglas's 3130cc "Warbird"
In his garden shed, Ian Douglas built a 3130cc v-twin, Warbird, using 2 cylinders from a Continental radial cylinder aeroplane engine.
Warbird website: http://warbirdmotorcycle.com/ (recently offline)
Kneeslider article: http://thekneeslider.com/archives/2008/11/21/warbird-191-cubic-inch-continental-radial-v-twin/
Another Warbird article: http://24cars.blogspot.com/2010/01/warbird-motorcycle-beast-out-of-love.html
and another with lots of pics: http://www.motorcyclemojo.com/2008/11/warbird/
Lucky Keizer's 5,000cc Merlin
Built in Auistralia in 1982 by Lucky Keizer, this 5,000cc v-twin utilizes 2 cylinders from a Rolls Royce Merlin 27-liter v12 engine found in an abandoned Mustang fighter plane. Keizer added nitrous injection and a supercharger!
Clemens Leonhardt's 6728cc "Gunbus"
Now this is getting silly...the Gunbus 6728cc v-twin built by German engineer, Clemens F Leonhardt...it has Boeing 767 wheels.
continued on next page: PAGE 6 - More Engine Innovators
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