Doug Jahnke Custom

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Doug Jahnke Custom Custom Painter Since 1971. Painted my first Harley when I was 15 years old. Fabrication/ Building Custom Motorcycles Since 1990.

I believe I’ll have as much time in this damn Rupp Go-Cart body as a full size Corvette by the time I’m finished with it...
10/08/2026

I believe I’ll have as much time in this damn Rupp Go-Cart body as a full size Corvette by the time I’m finished with it!

With the sunshine and warmth we’ve been having the last couple of days, I thought I’d get a start on one of the two fibe...
09/30/2026

With the sunshine and warmth we’ve been having the last couple of days, I thought I’d get a start on one of the two fiberglass Rupp Go-Cart bodies I have to lengthen the driver’s opening 3-1/2 inches.
After laying it out with 1/8th inch tape, I cut along the edge with a jigsaw with a fine tooth metal cutting blade. Using that as a template, I moved it forward 3-1/2 inches and cut along that line.
After grinding all the existing paint, high build primer, and original gel coat in that area, I used overly-catalyzed short strand fiberglass filler like a “glue” to hold it in place temporarily.
After a couple of hours I came back and knocked down all the high points with 40 grit sandpaper and put a 2 inch strip of fiberglass mat saturated with automotive polyester resin across the area.
Today I plan on flipping it over and adding a healthy layer of mat and glass to the backside of everything for strength. 😎

Apparently over the winter while I had the tank off the Blower Bike, I let the front end slam hard enough to the Left to...
09/23/2026

Apparently over the winter while I had the tank off the Blower Bike, I let the front end slam hard enough to the Left to wreck the hidden Fork Stop.
It took me a while to figure out how in the hell this thing is even put together before I could fix it before the handlebars come back and dents the tank. (I fabricated this 20 years ago in 2006).
A lot of masking, a little delicate grinding, and little welding and We’re back in business.

Exactly one year ago yesterday I pulled the 96 inch S&S Super Stock EVO engine and Magnacharger from John Salley’s Softa...
09/08/2026

Exactly one year ago yesterday I pulled the 96 inch S&S Super Stock EVO engine and Magnacharger from John Salley’s Softail to replace the blown up 124 inch S&S engine in Tom’s Goldmine Pearl Pro Street.
I actually finished it and took it out for its first ride yesterday. A few screws to the throttle, a turn of the key, and it started immediately! It didn’t just start. It just sat there and idled. I couldn’t be more thrilled!
An entire year of gathering the right people who know their s**t to make this happen. It hasn’t been easy. The bike even had to go through a flash overnight flood in which it sat surrounded by 3 inches of water. What a disaster!
My Cousin Johnny(Vescovi) deserves my biggest thanks for assembling the top end, Magnacharger, push rods, and pressing new bearings in the front pulley and clutch hub. Ron Craig Jr. at Dayton Performance Cycles for ordering the Platinum Air Suspension shocks and gaskets and getting my cylinders bored. He was invaluable when it came time to order the right dished pistols.
John Salley himself for re-making the Sputhe billet primary clutch ring gear and jack shaft and machining a new bronze bushing, all of which are obsolete. Josh Beasley for doing a killer job polishing the heads and cylinders. Billy Ramsey at JE Pistons for the fantastic job on the dished low compression forged pistons.
Metal Finishing of Indiana for the flawless chrome plating on the exhaust pipes(Even though they took 8 months!) and of course Mike Stocker at Cycle Shack in Medway who originally built both engines. He was there to give advice whenever needed.
Now it’s time to get some miles on it before Tom Takes it to Daytona in October for Biketoberfest. 😎

I wet sanded and buffed the Blower Bike’s tank today. I re-cleared it last week. It looks as good now as when I first di...
07/28/2026

I wet sanded and buffed the Blower Bike’s tank today. I re-cleared it last week. It looks as good now as when I first did it in 2007.
I’ve used that wooden stand it’s sitting on to Bondo, block sand, and run a buffer on every one piece tank since 1980 when I put it together. That’s 46 years and a Hell of a lot of tanks. 😎

A little while back, a painter friend I know from my Brookville shop and C&W Body Shop days, Chad Wilson gave me a Trek ...
06/25/2026

A little while back, a painter friend I know from my Brookville shop and C&W Body Shop days, Chad Wilson gave me a Trek bicycle for free. After turning down money, I offered to paint him with artwork on it.
Chad painted a little 12”x16” aluminum panel a bright metallic Lime Green and gave it to me to do something on. I did a drawing of a spider with Harley-Davidson lettering underneath it. I masked, cut and sprayed the initial spider’s body and lettering black then got too busy to finish it. A year went by.
One night a couple of weeks ago while watching an old episode of Star Trek (Mirror, Mirror from 1967) I saw a shield in the background of one of the scenes. I was immediately inspired.
I did a drawing, cut a piece of 1/16” thick aluminum sheet in the shape of a shield and painted it turquoise, trashed it up with a little fading and airbrush effects and threw some metal leaf lettering on it. After that I cleared the s**t out of it, wet blocked it flat, and polished it.
If you’re reading this Chad, you can come get it anytime. Maybe one of these days I’ll get around to finishing the Green one you brought me. 😎

2015 Harley Davidson Breakout with 2 front fender options.Electric Lime. 😎
06/12/2026

2015 Harley Davidson Breakout with 2 front fender options.
Electric Lime. 😎

Among the other projects I have in the works is this 1965 Rupp Go-Kart with a fiberglass body based on the 1965 Chevrole...
06/05/2026

Among the other projects I have in the works is this 1965 Rupp Go-Kart with a fiberglass body based on the 1965 Chevrolet Monza SS Show Car. These Karts were manufactured between 1960 and 1970 in Mansfield, Ohio.
The Karts and bodies were originally designed with kids in mind, but have become popular with adults, especially Shriners to be driven in parades.
Adults have a hard time fitting into them comfortably, so this project requires me to move the steering wheel forward three and a half inches and cut the body’s driver’s opening and re-glass it correspondingly. 😎

Wet sanded and buffed the rear fender of the Blower Bike and bolted it on only to find out the LED board in the tailligh...
06/04/2026

Wet sanded and buffed the rear fender of the Blower Bike and bolted it on only to find out the LED board in the taillight took a s**t. I had drilled holes through the back to enable me to push the lens out for this very reason.
I did this 20 years ago and thought there was just the center hole. Pushing too hard in the center resulted in breaking the lens. I was surprised to find out the lens is actually made from a piece fluorescent light fixture diffuser with the back side painted HOK Brandywine. It’s held in place by thin strips of windshield butyl.
Now to find a similar replacement board since this one is discontinued. 😎

While it’s off the bike….
05/30/2026

While it’s off the bike….

Address

4126 Industrial Lane
Beavercreek, OH
45430

Telephone

+19374313688

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