Saturday, December 29, 2012

A fat little pig

I'm running around doing stuff other places than here on this blog, more specifically on the Motorious blog which is hot-wired to our shop in Copenhagen, so stay tuned there if you feel greasy. Sorry for the lack of posts. I'm bad, in a bad way, which is good.

Old Dirty Motorcycles

Thursday, August 16, 2012

Denmark: Coast to Coast

I went for a ride from coast to coast in Denmark with Allan, JO and Nicolas - and we only had 4-5 breakdowns - but they were all in the deep end of the pool. Sprocket came loose off of the axle on JO's Chief. Got that fixed. Then the Generator quit - but got that fixed - and from there on it was only minor rebellious attempts from the Chief bobber.

Nicolas's brakedrum suddenly came loose, as all the bolts where broken...but we managed to fix it with some help from our friends and Mosten MC - hey - make sure to go there for Race day!

A flyer for a party at Mosten...something about christening the new shit'er

A picture of Mogen's freshly rubbered drag-strip in the evening sun - good fun to paddle up and down on it - and what a great bunch of guys the Mosten crew is - hats off to these guys.

Camping near water.

Recreational activities, before a quick descent back into beers and bikes.

"4 hours of open bar - beers and Vodka burn - €8"

Camping near some different water

Bork Havn by night.

Kalø Castle - spontaneous old cars/bike meet-up
And the finally - a ouple of miles from home, I blew a tire on the rear wheel.

Good fun to ride the Danish country-side!

Old Dirty Motorcycles

Sunday, July 08, 2012

For sale in Copenhagen: 1942 WLA

My friend Jacob has a spare bike - and that's one too many, so he's selling off his Harley Davidson WLA from 1942. Jacob says: "It was built as traditional bobber three years ago. Engine overhaul was done less than 10.000 km ago. New 12V system, Cycle Electric generator, Schnabel electronic relay, Ed´s electronic ignition, Crane coil (no issues !), Mikuni carb., genuine 4” Flanders risers, PH bridge, Firestone ANS Millitary tyres, BT&E style Rearlight, 1936 Ford speedo, Jeweled fender rails. Ignition and carb adjustet on dyne (MJP 2000) by Speedy (with papers). Just won (30.07.12) ”Period Modifyed” Category on Linkert Attacks (France). Local pick-up.

Want to know more? Contact jo(AT)

Old Dirty Motorcycles

Wednesday, May 30, 2012


Mr.Bram at has been lending a steady hand at the shop.

Old Dirty Motorcycles

Tuesday, May 29, 2012

Monday, May 21, 2012

Another great weekend

Sunday morning...trying to put the pieces together from the night before.

Old Dirty Motorcycles

Motorious: Opening fiesta

This Saturday we are hosting a little get-together at the shop, so if you're in town drop by and say hello!

Old Dirty Motorcycles

Thursday, May 03, 2012

Tuesday, May 01, 2012

Sunday, April 22, 2012

Flathead stroker - update 2'ish

So, the engine is now assembled - and on it's way into the frame.

Hylomar is the shiz.

There was a bit of a hazzle with the bottom mount for the scavenger pump, so I had to call Lau Gotthard for a favor and actually got to pillage his partially assembled WLC engine for this part - what a champ - thanks for that!

So for my next trick I've been putting the complete bike together - electrical, using a magneto and no battery - more on that in a later update.

Also spent a few minutes getting the 38mm Mikuni on there. It looks good, and should feed this puppy sufficiently. Starting out with a 350 jet and needle in middle position - and I'll take it from there. 

Had to do a bit of porting on the manifold as there was a huge wedge where the Mikuni met the manifold, which should help improve flow a bit.

Getting closer to making some noise!

Old Dirty Motorcycles

Saturday, April 14, 2012

The Motorious blog

There's a new blog in town - and it's actually what we have as website right now for the shop - so stay tuned to see what's coming in and going out of the shop. Drop by and say hi if you're in town. Click here.

Old Dirty Motorcycles

Friday, April 13, 2012

Big Twin Flathead stroker project update

So the flathead engine I've been putting together is almost done. I've been lousy at posting pics about it, but at least I have them - and I'll post a few from now on to show the process and hopefully a successful kick sometime soon.

I'm using a T&S 4,5" stroked flywheel to make an 84" Flathead (originally an 74", but has been bored to 80"- and then plus the stroke it ends up at 84"). The pistons are standard flat-top flathead pistons, which have been shaved 3,5 mm so they clear the casings/baffles when coming down. The connecting-rods just clear the houses, but only barely and I think any minor discrepancy there be between each housing mould might mean that something should be shaved off them as well - but not on this engine. A longer stroke than 4,5" would require that - and that would also require other pistons as far as I can read from clever people. 

The clearance to the head is 1,2mm - out of which 0,5-0,6 is the copper gasket. This means the pistons stops at 0,6mm before the deck. This distance was created will a quite small stroker-plate + a gasket on each side lifting the cylinders about 2mm higher that stock. 

The calculation of the compression is below here (in cc's) - ending up at 7:1.

The cams had to be smoothed out as they where like sandpaper on the lifters - another little detail.

Getting closer!

The observant viewer will notice that the spiral drive breather valve gear has the threads the wrong it wouldn't engage with the pump. Hadn't noticed till assembly was full under way - so had to find one during easter holidays really quickly, but that's where Frank comes in. Every time - great stocker and great guy. Thanks for all the parts!

Half way there!

More to come.

Old Dirty Motorcycles