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Scale Running Model Harley Panhead Engine by Ron Colonna



V-Twin Panhead
Ignition: Spark
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.

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Views: 660,724
Added: 4 years
Runtime: 2:27
Comments: 413

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Comments:

Author BUDDY LIGHT (18 days)
Looks like it may require a cooling fan?

Author bud burck (13 days)
How much for one

Author MrFrontenginedragste (13 days)
Smokes like a panhead!

Author John Shagawat (24 days)
That is awesome sounds great my old lady want to know if you can hook it up
to her vibrated?😵

Author tobylump (22 days)


Author Allen Scott (1 month)
i would like to put one on my mini harley bike swap it out from the stock
49cc with this and it would be a crowd pleaser for sure what is the cost of
one of these little engines run???

Author NZHorizones (1 month)
That sounds amazing!

Author David Good (1 month)
Now for the hardtail chassis, 2/5th scale

Author Jurnymn (1 month)
Smokes like my old Panhead.

Author denro0 (1 month)
I'd mount some ape hangers on the front of that board and have it working
with a throttle grip....that motor is awesome !

Author MrWeetjewel (2 months)
Just like the real thing, blue smoke from oil consumption, idles messy,
constant tinkering to keep it running, and you have to bolt everything down
to prevent it from falling over.

Author dizbcuz (2 months)
your rear pushrod tube is wiggling but great job

Author Ivan Hoffsteder (5 months)
You should build the rest of the bike, That's Awesome !!

Author wildcoyote34 (6 months)
this is pretty cool ,,, it even sounds like a real harley engine 

Author HoonTV (6 months)
Awesome!

Author James Scarberry (3 months)
Tooo Cool............... Nice job!!

Author Julyboy 1950 (20 days)
tooooooo much!!!!!!!!!

Author Amonynos (9 days)
that'd make one awesome mini bike

Author bob smiths (7 months)
What is the displacement and HP of this motor? 

Author daan bombay (5 months)
whaaaaaaaaaaat XD Nise man

Author Mesa Vella (5 months)
I am amazed...excellent feat!

Author Jesse Angell (5 months)
Hey Ron, I'm new to the miniature engine world, and I'm wondering how one
goes about obtaining these. Are they all custom built? Or does anyone sell
prebuilt engines or kits? Thanks in advance.

Author Russ Swanson (8 months)


Author Esiggies Cigarettes (6 months)
I hope you have a trailer.

Author awbretire (6 months)
Awesome. Nice job of engineering. And can ya make a 4 speed tranny for it
with kick?

Author Daisuke Sakazaki (6 months)
Kids and such. First of all you guys need to get off your butts and do it.
Im a psycho with a v-twin chainsaw on my arm. Deal with it. Don't try this
at home. Stereotypes you also need a job.

Author Mike Sellers (6 months)
even at 2/5 scale that engine sounds bad ass

Author pandaManda22 (7 months)
What kind of carb are you using?

Author Mike Palumbo (7 months)
Here's a mini Panhead. Sounds just like a full scale engine. More links to
others too on YouTube 

Author Dan Brown (7 months)
Very nice job. Casting and machining, you are indeed a master craftsman.
Retired has tools and brains putting it all together and this is what you
bet.

Author Snitchy1989 (7 months)
beast.. How did you make that? and make it look so realistic

Author Zvonko Mokricky (7 months)
the best engine.

Author Donny Yaul (7 months)
i want that to build mini bobber for my lil girl... 

Author herbienbrian2 (7 months)
Now this would look good in my minibike.

Author re tard (7 months)
that would go great on my rupp hustler

Author Всеволод Кононов (8 months)
very cool 

Author coltbuntline (8 months)
Where can I buy on? Do you have a knuckle and shovel?

Author Jay Chapman (8 months)
wow crazy

Author TwistyMcFisty1 (8 months)
You totally have to build a little chop around that.

Author James Hornback (8 months)
Decent Harley action in Red Light King OLD MAN video.

Author andreas stavrou (8 months)
popcorn is ready

Author Motonit Motors (11 months)
dam cool...

Author carl burke (8 months)
Sweet !!! is this available to build in a kit ?

Author Karl Kreutzer (9 months)
1A +++

Author Dylan Hunter (9 months)
BADASS!!

Author Karl Power (9 months)
So damn cool. Where can I buy one to build?

Author William Karlovic (9 months)
Very cool! but what are you going to do with it?

Author Mike Clements (9 months)
I have great respect for any one with enough patience to build something
like this. I have the tools and the skill. But I don't have the patience.
It takes all 3 to do the job. Well done sir !

Author Dean Burge (9 months)
Is there one that is 66/80 cc that will mount on a bicycle

Author Augusto Gamer (9 months)
harley davidson sound

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