Fiday Night Thread (entertaining pics)

[bushmechanic]

707cc watercooled twincam 4speed JAWA sidecarcross engine

 

[steve]

So when's a Jawa desmo head going onto the 700 Bushie?

 

[bushmechanic]

I think the ducati 1198 parts are the most economical way to go for desmo

been thinking about this for a while...... ducati crank, 1 cylinder/piston, head, CF/Aluminum cases, hayabusa or ducati gearbox/clutch with only 3 gears.

so you'd get about 600cc, plain big end, desmo head, light crank, strong gears and clutch

 

[bushmechanic]

Mark Walker (creator of big ned) has his own site now ...

click on the link and watch the montage come up

MWV2: Concept Motorcycles by Mark Walker

 

[bushmechanic]

year or 2 on my Stuska 400 hp Water Brake Dyno, in my workshop in Kirrawee, Sydney. My blown 2 lt V twin doing dyno runs at 270 hp... Revs between 7000 and 8000.... Very exciting and uplifting times.

 

[bushmechanic]

The tiny engine, which is called the DIG-T R, weighs only 88 pounds and uses a turbocharger to develop an impressive 400 hp and 280 pound-feet of torque. The engine produces 4.5 hp per pound giving it a better power to weight ration than the new turbo 1.6L V6 engines that will be used in F1 this year. - See more at: DailyTech - Nissan Coaxes 400hp from 88-pound, 3-cylinder Turbo Engine for Hybrid Racecar

DailyTech - Nissan Coaxes 400hp from 88-pound, 3-cylinder Turbo Engine for Hybrid Racecar

 

[steve]

I think the ducati 1198 parts are the most economical way to go for desmo

been thinking about this for a while...... ducati crank, 1 cylinder/piston, head, CF/Aluminum cases, hayabusa or ducati gearbox/clutch with only 3 gears.

so you'd get about 600cc, plain big end, desmo head, light crank, strong gears and clutch

I recall your ponderings on this. Looking forward to the build

There was an interesting 2 stroke 500 GP bike home built, maybe 20 years ago, in the UK using a Duc gearbox. There was a series of articles on in one of the UK bike mags at the time, Performance Bikes or maybe Fast Bikes?

 

[bushmechanic]

hows this for inspiring... you got goosebumps tourist ?

more pics here

"1916" Steampunk

Creating "1916" V16 Steampunk

"1916" V16 Steampunk Motorcycle
Inspired by the European builders of V16's in the pre-war era: Auto Union, Bugatti, Harry Miller and BRM.
2560 cc Supercharged V16
Recycled Victa 160 Lawnmowers:: Australian Made Icon.
Using the Flywheels, Conrods, Barrels, Heads, Pistons
Made longer crankpins to accomodate 2 conrods
Bored Victa flywheels out to fit 25mm mainshafts and dowled each shaft into the flywheels
Crank put together with 32 joints and 9 mainbearings
Crankcase made from 90 degree 10mm angle
Blocks machined and split and screwed into crankcase to support mainbearings
Rover Gear Box Bevel Gears, shaft driven into the Suzuki Clutch which is released by a thrust bearing with handle
Fuel tank is an Australian made fire extinguisher from the Gulgong Swap Meet
Triumph Wheels
Early 1920's Seat
Early BSA Girder Forks
Morris 1600 Inch 1/2 SU Carburetor
Air filter on Carby is a 1920's shower rose
Headlamp is a Brass drain from a shower block
Australian Made Brass Drain pipe fittings from the early 1950's for the Airflow to crankcase
Australian Made CEMA Oxy guage for the motor pressure on the left grip
Douglas Throttle control
"Quadrature" tachometer type 102-B.S. A Symchrotac Instrument Made in Australia
Grips are copper pipe with aluminium caps and brass sleeves to hold
Copper Pipe Centipede for high tension leads
Wing nuts on front wheel from the Dorrigo antiques shop
Spur Gears running the Supercharger 2:1 which is from a Japanese Vehicle
Holden V8 Distributors geared 1:1

 

[bushmechanic]

 

[bushmechanic]

 

[Dr_C]

very nice Dr_C

do they publish the weight somewhere?

I bumped into Lars Nilsson yesterday (foLAN). He said the small 650 weighs about 40kg with an electric starter. Gear box is casette type. Price tag is some 8000€.

 

[bushmechanic]

nice! 40 kgs isn't all that bad but its a lot more than 27

 

[bushmechanic]

been looking for this one

and this one

 

[logjump]

 

[bushmechanic]

for those not subscribed to Dr_Cs thread

https://www.youtube.com/watch?v=wd_ja-Dgx4A

 

[bushmechanic]

When Honda created its fabled six-cylinder racebikes in the 1960s, it was pushing back the frontiers of the technically possible. Honda's attitude was that if its engineers could imagine it, they could build it--and it would win. The machines they created were the two-wheeled equivalent of the Apollo 11 spacecraft and the first manned mission to the moon in 1969.

Honda RC174: RC Reborn | Motorcyclist

Not a single engine bearing was a standard size, and some of the alloys and surface treatments used were quite unknown to modern science. Soichiro Honda, founder of the company, was also a gifted metallurgist.

three different types of con-rods in each engine, with progressively larger big-end bearings for the rods nearer the center, where loadings are higher.......... crankshaft is pressed up from 13 components, each no bigger than a domino. Unsupported, it is so flimsy it can be deformed by hand, yet it would have to spin without deflecting at more than 17,000 rpm

the following picture is not an rc174 but an RC166 .. similar problems

 

[Idle]

Quote Bushmechanic
"I've been looking for..."

Found a bike that looks like it's owner. Catcher gear (baseball) on the forks.

 

[bushmechanic]

5L vtwin

One of our readers from the land of Oz left a comment on yesterday's post about Roland Sands, suggesting another possible engine for the bike. What Dodgy found was a 5000cc Rolls Royce Merlin V-twin motorcycle engine!

This engine was built in 1982 and was adapted from a 27 liter V12 aero engine by Australian engineer Lucky Keizer. According to the listing it was used in a streamliner that holds the current Australian record for the 3001cc+ class. The particular V12 used as a source for this V-twin was originally at home on a Mosquito bomber.

The engine uses a handbuilt crankshaft, has 4 valves per cylinder, runs a Rochester carb on a GM 3/71 supercharger. It also includes nitrous with water and glycol cooling. Power output is in the 500 horsepower range though no torque figures are given, those are the numbers I'd like to see! It weighs 330 pounds.

This engine was previously installed in a motorcycle and the photo here has circulated around the Internet for some time. Lucky Keizer has put the engine up for sale, ready for someone else to install it in their own VERY special V-twin custom.

Of course, if you start with a V12 and make a V-twin, you have the makings of 5 more, right? Some resourceful machine shop should look into that, you never know, there may be a huge market for monster V-twin motorcycles. You have to wonder, though, what the rotating mass in that engine would do to the bike's handling when you try to tip it into the turns, could be exciting!

 

[tourist]

can't link the pic but yeah, iceland today: The biker by Tómas Freyr Kristjánsson / 500px

 

[spanner]

I am all for simplicity myself...