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.

Rating Rating Rating Rating Rating 
Views: 705,903
Added: 4 years
Runtime: 2:27
Comments: 426

Tags for this video:  

Find more videos in the: "Autos"
Uploaded by: ronsmodelengines
See more videos uploaded by ronsmodelengines

Related Videos:

The "Flying Millyard" 5 Litre V Twin first test run
Rating Rating Rating Rating Rating 
Views: 326749
This is the first test run of my 5 litre V Twin engine based on two Pratt & Whitney R1340 aircraft cylinders, all other parts are hand made...
Mini CNC 4-axis and Miniature Chevrolet V8: Super Sound!!
Rating Rating Rating Rating Rating 
Views: 2044425
Homemade engine
Rating Rating Rating Rating Rating 
Views: 808359
4 Stroke 2 cylinder engine 20 cm³ 100% homemade. Propeller: 40-20 ( 16-8") Conventional machines No cnc used
Bristol Hercules demonstration
Rating Rating Rating Rating Rating 
Views: 4113312
Another demonstration of the very same Bristol Hercules engine as seen before on this channel. This was shot at the Borås airshow in Sweden this...
motor diesel V2
Rating Rating Rating Rating Rating 
Views: 619527
motor diesel in doi cilindri . ceva old
Schillings V8 80cc model engine running with great sound.avi
Rating Rating Rating Rating Rating 
Views: 763490
Schillings V8 model engine. 80cc, Methyl fuel, glow plug ignition, freewheeling electro starter powered by Lipo 5000mAH 2S.
1928 Henderson Deluxe Antique Motorcycle Running
Rating Rating Rating Rating Rating 
Views: 2427340
1960 Vespa 400 Microcar with 1200cc Harley Davidson Sportster engine
Rating Rating Rating Rating Rating 
Views: 515853
I've had a ton of emails asking for more shots of the build and video of it running down the street. Here a short clip to give you some idea of...
2 CYLINDER DIESEL TAPLIN TWIN 15CC running, vintage RC engine(not nitro or glow !)
Rating Rating Rating Rating Rating 
Views: 738285
MORE MODEL ENGINES : For the amateurs of : Vintage Engine motor V8 V12 twin 4 stroke...
Flat Head V8 Running Miniature Model Engine - Block is Only 7" Long!
Rating Rating Rating Rating Rating 
Views: 456528
Supercharged home made Straight Eight by Desperate Dan Vid 2
Rating Rating Rating Rating Rating 
Views: 1473848
Built in a shed, it fired up first go. I was hoping it would sound real lumpy like a drag engine, but it runs too smooth, and it's too quiet even...
Early Run of My V-Twin model Engine by Terry Mayhugh
Rating Rating Rating Rating Rating 
Views: 1952839
Just completed ... mostly machined on a Tormach PCNC mill with SolidWorks/SprutCam CAD/CAM plus manual lathe work on the cast iron cylinders,...
Stinger 609 Test Stand
Rating Rating Rating Rating Rating 
Views: 463708
Conley Precision Engines - April 2, 2011
World's Smallest running v8 engine
Rating Rating Rating Rating Rating 
Views: 4158341
Worlds smallest running v8 hand started small v8 engine.
Harley Big Twin Engine Cutaway View
Rating Rating Rating Rating Rating 
Views: 220991
Here is a V twin Harley Davidson motor that has been cut open as to view its action. I filmed this at Lake Washington Institute of Technology in...
V Twin Diesel Motorcycle
Rating Rating Rating Rating Rating 
Views: 1087377
This is my Punsun V Twin Diesel motorcycle. It was built in my high school class over the winter. It has 20hp and a CVTech CVT transmission it...
Eigenbau V2 Viertaktmotor LU (Modellmotor)
Rating Rating Rating Rating Rating 
Views: 1091102
Selbst konstruierter und selbst gefertigter V2-Viertaktmotor mit Glühzündung. Hubraum 12 cm³. Modellmotor "RC Engine" "Model Engine" Viertaktmotor...
1960 Vespa 400 Microcar - test start outside with Harley Davidson Sportster engine
Rating Rating Rating Rating Rating 
Views: 280573
Started the Vespa 400 outside today.... You can see it is basically wired now. Dash is installed, Harley Sportster engine buttoned up, lights...
Conley Factory Tour Model V8 Working 1/4 Scale Engine
Rating Rating Rating Rating Rating 
Views: 1635186
Visit to purchase this engine. Working 1/4 scale working V8 model engine. Tour of how it's made as well as some light...
Flame Gulping Engine
Rating Rating Rating Rating Rating 
Views: 5622324
This is a video of the flame gulper engine pictured on the "Models" page of my Engineman website. The fuel is alcohol. It was made from plans in...
1/3 scale 302 Ford V8 running
Rating Rating Rating Rating Rating 
Views: 1139222
After a long period of just sitting in the display case I finally made the time to get my 1/3 scale 302 Ford V8 engine running again. I made an...
Artus mini V12 Motor Sound
Rating Rating Rating Rating Rating 
Views: 1451603
V12 Modellmotor. we build this engine by self. please visit my website -- --
Bobber Pros "let it ride"
Rating Rating Rating Rating Rating 
Views: 932349 latest build. We take newer Sportster motorcycles and create daily driving masterpieces like this one shown in video....
Model V Twin
Rating Rating Rating Rating Rating 
Views: 100915
Hand made v twin 1/4 scale model engine
Model V-12 Engine Runs
Rating Rating Rating Rating Rating 
Views: 1879457
Check out this model V-12 engine! Gerhard Ullmann starts it up...and let's it run.


Author Fender Veal (1 month)
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 (1 month)
Must put this in my grandma's motorized wheelchair...

Author Jeremiah Hinton (7 days)
I would buy this and put it in a hardknock frame

Author Brian Weihe (7 days)
could i put one of those on a mini motorcycle

Author David Good (4 months)
Now for the hardtail chassis, 2/5th scale

Author harleywainie (1 month)
That's awesome mate, well done 

Author Ducati Drew (2 months)
Tattoo, needed that on Fantasy Island 35 years ago. Older guys will get it.

Author Da Nri (2 months)
Do you sell these? Or would you sell this one? I love it. 

Author Huffy Davidson (2 months)
Outstanding! Can it be mounted on a bicycle?

Author Soldier53flyer (2 months)
Great work.

Author Allen Scott (4 months)
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 MrFrontenginedragste (3 months)
Smokes like a panhead!

Author Ralph McCrum (1 month)
YES !!!! Now Here It Are !!!!!

Author jovan jovic (2 months)
How did you do

Author bob smiths (10 months)
What is the displacement and HP of this motor? 

Author BUDDY LIGHT (3 months)
Looks like it may require a cooling fan?

Author denro0 (4 months)
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 Jurnymn (4 months)
Smokes like my old Panhead.

Author C moore (2 months)

Author HoonTV (9 months)

Author NZHorizones (4 months)
That sounds amazing!

Author bud burck (3 months)
How much for one

Author Alexey Fin (2 months)

Author dizbcuz (5 months)
your rear pushrod tube is wiggling but great job

Author jovan jovic (2 months)
How much 

Author James Scarberry (6 months)
Tooo Cool............... Nice job!!

Author Jesse Angell (8 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 Amonynos (3 months)
that'd make one awesome mini bike

Author tobylump (3 months)

Author Karl Kreutzer (1 year)
1A +++

Author Mike Clements (1 year)
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 Zvonko Mokricky (10 months)
the best engine.

Author Augusto Gamer (1 year)
harley davidson sound

Author Mesa Vella (8 months)
I am amazed...excellent feat!

Author awbretire (9 months)
Awesome. Nice job of engineering. And can ya make a 4 speed tranny for it
with kick?

Author pandaManda22 (10 months)
What kind of carb are you using?

Author Julyboy 1950 (3 months)
tooooooo much!!!!!!!!!

Author Mike Sellers (9 months)
even at 2/5 scale that engine sounds bad ass

Author daan bombay (8 months)
whaaaaaaaaaaat XD Nise man

Author Dan Brown (10 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

Author Jonathan Bolz (1 year)
Definitely TFC in this small scale and especially to retain that
"Ker-chumph" sound.

Author Snitchy1989 (10 months)
beast.. How did you make that? and make it look so realistic

Author Donny Yaul (10 months)
i want that to build mini bobber for my lil girl... 

Author herbienbrian2 (10 months)
Now this would look good in my minibike.

Author re tard (10 months)
that would go great on my rupp hustler

Author Всеволод Кононов (11 months)
very cool 

Author coltbuntline (11 months)
Where can I buy on? Do you have a knuckle and shovel?

Author Jay Chapman (11 months)
wow crazy

Author TwistyMcFisty1 (11 months)
You totally have to build a little chop around that.

Author andreas stavrou (11 months)
popcorn is ready

Embed Video:


Search Video

Top Videos

Top 100 >>>


Check PR