This weekend I did a few more rides.
I am now happy with my idle settings and can now close the bi starter all the way.
Cold start procedure is to open the bi starter all the way, kick 2-3 times with ign off and throttle closed, bi starter in the mid position, ign on and she starts on the 1st or 2nd kick while twisting the throttle a little bit.
Oil pressure cold is over 100psi, and goes down after warming up. However, after a ride the pressure gauge shows 0psi while idling. Any thoughts on this?
I am getting the oil leaks under control, although I'll have to open the coupling gears cover to reseal it, as I have a leak on the underside of the cover.... bother! For the timing breather, I did the suggested mod with a copper pipe taking the opening to the area around the camshaft sprocket. This cured the major spewing of oil onto the back wheel. On the drive side, there is still a major leak, although I am not sure if it is coming from the gearbox output shaft or from the primary chain case. Probably will try Cam Steven's suggestion and see if that cures it.
My attempt at fixing the speedo wasn't very successful. It was very greasy inside but otherwise in good condition. Everything was cleaned, but the needle still springs back and forth and many times just stays at 0 and doesn't move. I believe the springs are not holding the sprockets or something is not quite working with the escapement. Any experts here with some suggestions?
As far as the engine goes, it has a smooth idle and runs very smoothly up to moderate speeds, with good acceleration and all that. However, at higher rpms (in top gear above maybe 70-80km/h or so) it seems a bit rough to me and as if it is not getting its full power. Still not sure what is going on, but feels like ignition timing. Either not set properly or the advance arms are not opening up as the should. I have a Thorspark ignition kit. Anybody using one on a Square Four? If so what is the best way to check the timing with a strobe light? What does one use to put some marks and check? I was thinking of using the front crankshaft, by unscrewing the inspection cap and putting some marks on the nut.
That's it for now. All in all feeling happy.