Scale Running Model Harley Panhead Engine by Ron Colonna
Bore: 1 5/16 in.
Stroke: 1 1/2 in.
Two Cylinder Four Cycle
No Castings Used
This engine was scratch built to a scale of 2/5ths or 40% of full size. The
bottom end was taken from a drawing of a Knuckelhead engine that I puchased
on e-bay. The top end was patterned after photos taken from e-bay of Harley
parts for sale. I also bought a Harley repair manual that helped with the
oil system. The crankcase was split into three sections instead of the
usual two for ease of machining. The ignition is solid state and I use a GM
coil which fires the two plugs simultaneously. Timing is advanced and
retarded with the timer body. Two rotating magnets fire a Hall effect
device at the proper times as per full sized points. The engine is large
enough to produce that lovely V-twin sound.
Scale Model Running Challenger Flathead V8 By Ron Colonna
Bore: 1 in.
Stroke: 1 in.
Displacement: 100 cc
Max RPM: 6,000
This engine was built early in my gasoline engine building career. I
received the castings and drawings as a Christmas gift from my wife. I had
it running about five months later. This is the engine that creates the
most interest at the shows. So much so that I've had to rebuild it twice
because of wear. As designed, it had some major shortcomings. The conrods
were bronze castings which promptly wore grooves in the crank. These were
replaced with rods machined from 2024 aluminum. Pistons were remade and the
engine fitted with rings made from the George Trimble method. Oil control
rings are a necessity as the engine smokes badly without them. An electric
start system was added and the engine now runs with the push of a button.
Artus mini V12 Motor Sound
V12 Modellmotor. we build this engine by self. please visit my website
-- http://www.artus-motor.com/ --
MotorConcept: Flat 12V - FERRARI 512TR
Réplique du moteur de la Ferrari 512 TR, entièrement réalisé de
manière artisanale par M. Daniel Aquilon, en Suisse.
Rendez-vous sur www.motorconcept.ch pour plus de détails.
Best Rc Pulling Video
some of the coolest rc tractor pullers i could find including one with a
mini jet engine in it. Sure is fun watching watching these little pullers.
Thanks for watching and please Comment, Rate, Subscribe! it really helps
Thank You :)
TruckModel Peterbilt 359 RC 1:4 Nissan Patrol vs. Peterbilt.mp4
Finally! The book is available with high-resolution photos of the
construction of the model! Also available in a digital version for Ipad,
Iphone, Tablet ...
The First Test:
The Second Test:
Sitting on.. :
Test For Maneuver..:
Ever thrown a rod? how about a block?
HUGE engine explosion at a tractor pull event. the block is literally
blown out of the engine bay and lands onto the ground next to the tractor.
as far as catastrophic faliure goes, this is as bad as it gets.