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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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Comments:

Author Kevin Colt ( ago)
sounds like the full size engine. this is great.

Author DiscoStewed ( ago)
It wont be a true panhead until it develops a rocker cover oil leak :-)

Author kevin Tucker ( ago)
Wish I was 3' tall. 

Author J.D. G ( ago)
Do you sell these??

Author william buck ( ago)
i want one

Author Durham Porsche ( ago)
does it leak oil like a real harley?

Author Matt Briley ( ago)
Cool man,what oil weight? 20w50!

Author Arief Triwahyudi ( ago)
i want try to build one can you make plans with sketchup i will buy the
detail

Author Airsoftfrreak96 ( ago)
I give this engine and all the work behind it a 10 out of 10
More than deserved.hope you sell the plans soon 

Author Jimmy Cooper ( ago)
This would be awesome in a little kids mini chopper lol

Author jason smith ( ago)
I want one does anybody know I can get one

Author Todd Dooley ( ago)
Cool as hell! Great job!

Author Paul Eaton ( ago)
smoking just like a harley to. lol

Author Tiguy Uphill ( ago)
Love to twist some Chrome-Moly around that!

Author Brent Miller ( ago)
You can use it as a vibrating bak massager LOL Make a opposed twin and it
will run as smooth as silk

Author SoyBoySigh ( ago)
I'd bet a 50cc or 70cc Honda single cylinder would kick it's ass - so yeah
spot on good replica! Ha-ha. Now how about a proper L-twin motor, in the
form of a Ducati Bevel Desmo 900 SS "square-case" - now that's one you
could even SELL it's popular enough - yet at the same time it would also
make some power! Somehow I get the feeling the people who would want a
running panhead motor on their desk-top ... I'm picturing the oil baron guy
from The Simpsons - they'd probably be even happier with a FULL-size
panhead paperweight, chugging away with that distinctly AGRICULTURAL
sound.....

Author Jeremy Bryan ( ago)
Probably more reliable than the original! 

Author captainbluefishmonster ( ago)
That probly equivalates to 10 or so + kicks to cold start so yea spot on ..
Minus all the swears 😡
NICE JOB

Author Bid ways (Bidways) (344 years ago)
To know it

Author Michael Weir ( ago)
who makes these engines and can you still get one

Author Jeremiah Hinton ( ago)
I would buy this and put it in a hardknock frame

Author NeutralBattle WithBrian ( ago)
could i put one of those on a mini motorcycle

Author harleywainie ( ago)
That's awesome mate, well done 

Author Fender Veal ( ago)
And I thought I had seen it all. Great job,well crafted been building the
real harley motors since 1970 ,now I want to build one for grins,too groovy

Author AJ Moore ( ago)
Must put this in my grandma's motorized wheelchair...

Author Ralph McCrum ( ago)
YES !!!! Now Here It Are !!!!!

Author Da Nri ( ago)
Do you sell these? Or would you sell this one? I love it. 

Author Alexey Fin ( ago)
Awsome!

Author C moore ( ago)
Fantastic!!!

Author Huffy Davidson ( ago)
Outstanding! Can it be mounted on a bicycle?

Author jovan jovic ( ago)
How did you do

Author jovan jovic ( ago)
How much 

Author Soldier53flyer ( ago)
Great work.

Author Ducati Drew ( ago)
Tattoo, needed that on Fantasy Island 35 years ago. Older guys will get it.

Author MrFrontenginedragste ( ago)
Smokes like a panhead!

Author bud burck ( ago)
How much for one

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

Author Julyboy 1950 (413 years ago)
tooooooo much!!!!!!!!!

Author tobylump ( ago)


Author Allen Scott (americaneagle78) (415 years ago)
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 David Good ( ago)
Now for the hardtail chassis, 2/5th scale

Author NZHorizones ( ago)
That sounds amazing!

Author Jurnymn ( ago)
Smokes like my old Panhead.

Author denro0 ( ago)
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 dizbcuz ( ago)
your rear pushrod tube is wiggling but great job

Author The Whole Truth ( ago)
Tooo Cool............... Nice job!!

Author daan bombay ( ago)
whaaaaaaaaaaat XD Nise man

Author Brian Critchley ( ago)
Brilliant, put it in a mini Harley frame & charge kids twenty a ride, then
build more, you could end up with millions..

Author Jesse Angell ( ago)
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 Mesa Vella ( ago)
I am amazed...excellent feat!

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

Author HoonTV ( ago)
Awesome!

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

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

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

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

Author John Ratko ( ago)
Right on.

Author Zvonko “Zvonimir” Mokricky ( ago)
the best engine.

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

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

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

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

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

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

Author Всеволод Кононов ( ago)
very cool 

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

Author Jay Chapman ( ago)
wow crazy

Author andreas stavrou ( ago)
popcorn is ready

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

Author Russ Swanson ( ago)


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

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

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

Author Mike Clements ( ago)
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 Karl Kreutzer ( ago)
1A +++

Author Dylan Hunter ( ago)
BADASS!!

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

Author gustinho 10 ( ago)
harley davidson sound

Author vittorio midjo ( ago)
how does engines give sound

Author mastertracker510 ( ago)
Super nice! how much?

Author 45yayayaya ( ago)
that's the coolest fukin thing ive ever seen

Author KesherMedia Kay Em ( ago)
OMG... It's a baby Harley. :-)

Great work!

Author Jonathan Bolz ( ago)
Definitely TFC in this small scale and especially to retain that
"Ker-chumph" sound.

Author chiviric ayala ( ago)


Author pyrofella ( ago)
At least if that Harley breaks down - you can throw it under your arm and
carry it to the shop.

Author Амиран Бохуа ( ago)
Souds deadly Right! 

Author Motonit Motors ( ago)
cool

Author Jody Mcclure ( ago)
Excellent work!

Author NihongoGuy ( ago)
That is MY question - how the hell do you do this?

Author kikichevy ( ago)
The only engine naturally leaking oil I know is the Triumph. It it's not
leaking, your oil's gone!

Author bart canfield ( ago)
Beautiful do you sell em

Author Jan Binnendijk ( ago)
This engine needs a tank, a seat, frame, wheels and a handlebar..

Author Ben Dover ( ago)
I'd buy one for my bike to

Author ducatiman100 ( ago)
i need one to put on a stingray bicycle seriously

Author fred lewis ( ago)
awsome

Author Ray Abbott ( ago)
This is Great :)

Author Andork Kuomo ( ago)
No, but it IS burning it, lol! Seriously, that thing is really cool. I'm
not even the worlds biggest Hardley fan but I think that is cool. Really
nice job!

Author LA X ( ago)
Where the fk do you even start in building something like this...? Do you
know Allen Millyard? He is just building a 5 litre V twin, look him up on
here.

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