TamW

Slowly but surely we are making some progress with the bike. I already have new tires and battery, carburettors have been cleaned, and next job is the starter motor.

I was thinking about getting new exhaust silencers, I would like to have a bit louder exhausts, but not so much to annoy my neighbours. I was looking at something like these (Louis…[Read more]

Hi David

Michael tried to post a reply but it did not work. Here it is

Hi guys,
these pipes are changed often, but I expect Davids Twin to have the stock setup.
There is one pipe redirected into to air cleaner box, front, top entry.
In this tube there is a jet to reduce airflow.
No idea for what this is good?
All my Twins don’t have this…[Read more]

Hi David

Is that the pipe that goes from the petcock into a T piece and then the other 2 pipes each go to a brass pipe on top of each carb? If so it is part of the system that operates the vacuum petcock. All these pipes should be clear. There is nothing inside any of them.

When the petcock is set to ON or RES there is a diaphragm that prevents…[Read more]

hi sir

Hello and welcome threecrosscustoms

That’s a very interesting build you have there. Did you buy it that way or have you built it yourself?

Enjoy the site and feel free to contribute or ask away with any questions you have.

Cheers for now

KK

Hey Marko welcome back. Has it really been 3 years?

Your S1 still looks very tidy and shouldn’t take too much restoring. Hope your liking the New Look site.

Keep us posted on your adventures, I have missed them.

Cheers

KK

Hello!
So after 3 years the time has come to put my twin back on the road and I am really excited about it! Today I took it to my friend’s garage, we will start working on it in the following weeks.

The plan is first to check the engine and see what needs to be done. Next thing is the starter, new tyres and I would also like to change the brake…[Read more]

looking good there

Hello Jack

I have found a spoked rear wheel for you from a B model. It has a good hub but the spokes and rim are poor condition. I can look at sending the full wheel or just the hub, that is up to you. It might be worth while speaking to the person who will respoke it for you as I have found here they like the full wheel then they can get the…[Read more]

That’s a good point Michael. We are currently looking into getting new springs manufactured. I will keep everyone updated of any progress.

That is looking very nice Michael. I must admit I struggle to take my eyes away from your garage setup. I am not jealous honestly.

Can’t wait to see the finished bike

Hello Jack
It is good news you have a B1. I can probably help with a rear wheel. I have quite a few wheels but it would need to be refurbished. Also it might be better for me to find just a hub as postage would be much cheaper. I will look this weekend.
KK

Hi David
I believe the JBM diaphrams work well but I have not tried them myself. There was one of the German members who was making carb rubbers for the 34mm carbs. I will make enquiries and get back to you.
One other way of sorting the airbox to carb rubbers is to use universal car steering rack gaiters and cut them down to suit.

There is no need to apologise for any spelling.

The screw indicated is the fuel mixture screw and NOT for setting the idle speed. It determines the mixture of fuel and air that comes out if the carbs. Idle speed is set by adjusting the bigger wheel screw position underneath the carbs towards the back.

To adjust the mixture each carb will need…[Read more]

Hi David
Do not despare. I am sure we can help. My first thought is the fuel ‘varnishing’ with being stood over winter. Ultrasonic cleaning would solve that problem. The issue is definately fuel starvation on the pilot jets. This could be for several reasons with varnishing being one. Assuming the pilot jets are good and the right size the 2nd…[Read more]

Hello Jack and welcome.
The picture shows your twin in B1 colours. B1’s can be 1976 or 1977. We can confirm which model you have from the frame number.
Enjoy the site and feel free to post some pictures.

hya sir,feel free to post photos

I have a spare caliper body. Will send a PM with details.

KK

welcome young man