Several years ago I did some research into pistons with offset small ends, because I was considering using some GPM pistons with offset pins, in my Mk1.
What I discovered was that the offset tends to push the piston flat against the bore on the up stroke, resulting in slightly better heat transfer ...

If you can remove the fork legs, then you probably do have the required skills to overhaul them.
Apart from normal tools, and a good vice, you will need special tool 61-3005; oil seal holder tool; available from Draganfly.
They are around £60 each, they used to rent tools out; you will need to ask ...

I use Mobil 1 fully synthetic 15/50 in my Mk1.
Modern multigrade oils contain a detergent; therefore it is very important that the inside of the engine is clean before you put it in.
As it has had a recent rebuild that should have been done. If there is any doubt, simply remove the timing cover ...

Hi Simes. I am also a Solex AHD fan. I have been restoring, and playing, with them for more years than is healthy.
The first thing that I would suggest is to set the fuel level. It should be level with the bottom of the air intake; although plus or minus a millimetre makes little difference.
Unlike ...

It seems to me that you need a PWK30, not a square four, expert; to answer your questions.
The fact that the idle mixture screw does nothing suggests that the throttle slide is already too far open at idle; and that most of the idle fuel is actually being supplied by the needle jet.
It may be that a ...

Just a thought Brian. Did you get a dynamo control unit with the bike?
If so, what make is it?
I'm wondering if you have a non Lucas type of control unit.
The Lucas system controls the output by varying the current flow between terminal D and F.
There is an alternative system which controls the ...

As Mick says, The Field coil wire; which looks to have been extended; should not be connected to the D terminal. It must be connected to the body of the dynamo. I believe that this is your only problem.
One of the brushes is earthed. You could connect The Field wire to the same point.

Where does the black wire, which is connected to the D terminal, actually go to?

Hello Brian. Assuming that you are spinning it fast enough; a battery powered drill may be too slow; then the most likely reason for lack of output is that the residual magnetism has faded away, due to lack of use.
As its name suggests, residual magnetism, is what's left in the iron pole pieces ...

The best solution, in my opinion, is to remove the lead plates from the battery and replace them with LiFePO4; Lithium cells. You get a lighter, longer lived, higher capacity, faster charging, and maintenance free battery.
The only problem is that no one makes a LiFePo4 to fit the square four; so ...