Rusty pipe.

Where do you find a 1933 OK Supreme exhaust pipe? Well there are not many OK dealers left.....But there are still some people who master the art of pipe bending. We went to Sweden last weekend to pick up the pipe. Thank`s Anders for a job well done

The metal worms have been feeding......

BIG end TROUBLE.

I have been working quite a lot on the Ok Supreme. My first plan with the engine was to overhaul the magneto and check the cylinder and head. I wanted to leave the bottom halve alone.

But it is not supposed to be easy, so when I saw the state of the cylinder and head I knew that the crank cases had to be opened…..

The engine has not the usual main bearing set up of ball and rollers. There are long rollers straight on the shafts.  So when you have worn shafts……you have trouble…..

The shafts has too much damage for grinding and “spray” welding don`t work well with rollers. New shafts are the only solution. 

The JAP speedway engines have the same set up but not the same size…..So where can I find new shafts? A Swedish friend pointed me in the right direction…..There was a place that could help…..After a phone call we agreed that I took the crank apart and sent the shafts and bearing rings to get the everything to the right sizes.

Need some pressure to keep the crankshaft in place when unscrewing the big end nuts.

Time for wood and mallet.....Hit me baby, one more time.....

 

There were more problems…….The rollers of the big end bearing had “eaten” a 3mm groove in both sides of the crank weights…..Another phone call and everything are on their way to Sweden.

Need a good washing.......

Skåne Rundt 2010

We are going to Sweden on Friday:  Skåne Rundt rally, http://www.mchksyd.com/index.html.

So carbs and ignition have to be tuned, new inner tubes and chains.........

An offer I can`t refuce.....

Last year we went to the Swedish vintage rally "Skåne rundt". Had plans to do it this year as well with the Ariel and Norton. The Ok Supreme takes more time than i thought to get ready. It was a disappointment when i got the rally invitation and they had changed the rules: All the bikes have to be pre 1940....

But help is at hand, i was offered to borrow this nice 1939 Ok Supreme:

Gold petrol tank. No need to pimp my ride....

Total loss oil system and a decomp plate underneath the cylinder.....Racing?

Sparks will be flying.....

I have always suspected Swedes to have a close relation with the dark forces. So when i found a Lucas parts book in Swedish my suspicions turned out to be right.

But the part book is very helpful when I work on magnetos and dynamo's. I have just finished the magneto for the Ok Supreme. The armature has been in England (Dave Lindsley) for a new rewind and a condenser. New bearings and points and it`s ready to go. A fat spark was the reward!

Ok Supreme, Britannia ?

This is a wonderful period shoot from 1935. The bike is an Ok Supreme, and can be an Brittania from 1933/34. I am not sure, there are something that are different from the sales catalogue. Can be an Phantom with foot change?
The bike was sold off before the war, and we don`t know if it still exist.
The Britannia was the top of the line from Ok Supreme. The other models had hand change and deeper mudguards. The Britannia was listed with secial cylinder head, foot change Burman 4 speed close ratio gear box, Webb TT girder fork and could be delivered with BTH racing magneto.

Ok Supreme Delivery 1977

These photos are from 1977 when former master painter Herman Hansen delivered the Ok Supreme to the chairman of the motor club.

Ok Supreme cylinder head

Finaly I got all the parts for the cylinder head. The valves, valve guides and springs are the same as Brough Superior SS100. I felt rich when I for the first time in my life ordered parts for a Brough!Now the head are redy with new paint, grinded in valves and new guides and fresh springs.

Ok Supreme updates

The aim for this winter is to get the OK S. finished for the Danish vintage rally "Skagen Rally" in May. The engine needs new valves, guides, and valve springs. The piston is stuck in the cylinder barrel. Have added light oil to lose it up.

The float chamber are dammaged, need a new one.

Have to overhaul the magneto and dynamo. Lucas in charge of the sparking.

A tale of an Ok Supreme.

One of the first motorcycles I can remember is an Ok Supreme. This is late `60s early `70s. Nearly every afternoon I or my brother had to go to a kiosk to buy father the evening newspaper. The kiosk was located in a road junction besides two petrol stations, bakery and some shops. For a young kid there was a lot of thing to look at, especially at the petrol stations.
Sometimes there was an old odd looking motorcycle filling petrol at the BP station. It was ridden by a small, old man with a strange coat. We later learned that the man was a Danish painter, who lived just a mile away. The bike was an OK Supreme 500cc.
Some years later the motorcycle interest took off. We were hunting high and low for old bikes. There was not a lot of interest for old worn out motorcycles, sometimes they could be picked up for free.
After awhile we heard of an Ok Supreme and off we went to have a look. The bike we saw was the one we remembered from years ago. The Dane had passed away in 1975 and in his will he had left the bike to the local motor club. The bike was not for sale, but it was started up for us so we could hear the sound of music. This was probably in 1980/81.
Around `95 the motor club needed money so they put the Ok up for sale. They wanted the bike to remain in town. At the time we could not afford the bike so it slipped away.
Some years later I saw the bike again, it was displayed at a local motorcycle show. It was still in untouched condition. I talked to the owner but he had not decided what to do with the bike.
This autumn my brother bumped into him at the hard ware store. He asked about the bike and the possibility to have a look. That was not a problem, so off we went.
He had never had the time to do something with the bike, so he decided to sell, the price was right, so surprise surprise, and the Ok supreme lives now in my shed.

We are not going to restore it, just do the things that have to be done to get it on the road again. I think the Dane would have liked that.

The power plant: A JAP 500cc engine

1933 Ok Surpreme Phantom