Am fitting the rebuilt long roadholder forks to my 1956 (pre-featherbed) Model 50 and the manual refers to a "pull through" tool that is needed to get the top of the sliders into the top yoke. Are these available? Do I need one?
Now in my ES2 ('61) rebuild, another query - and I thought it was an easy job when I first saw the bike.
Turning the engine over - not running - oil is running out of a small tapped hole on the timing side crankcase. It is situated behind the timing case cover, pointing rear and down - about 8 o'clock - mainly hidden by the frame tube.
It seems to be 9/32", I can't see what TPI, probably BSF or Cycle (1/4" is too small and 5/16" is too big).
It is not shown in any of the exploded views I have seen and no such size is shown in the Norvil spares list.
Is there a specific amount the valve is held open by the decompression mechanism on any big bore single?
Hi please can you help with the dimensions of the Manx Norton 2LS front brake anchor peg? Especially the thread size/form. It will give me a little job to do in between the many chores around the house that my wife has lined up for me. Stay safe, thanks Andy
Could anybody please advise which is the best battery to get for my 1957 model 50/350?
Many thanks
Dave
I have read somewhere that the breather pipe exiting the engine at about 2 o'clock looking at the drive side crankcase should have a ball valve in it. My rebuild does not have one, and when I kick the the engine over there is a loud gasping sound from it. When I block the outlet pipe there is no gasping sound.
I think this breather pipe will allow the engine to be open to atmosphere as there is no rotating disk or any mechanism on the crank end.
I suspect that if I ran the engine like this the entire oil tank would be on the garage floor very soon.
A friend of mine has just bought a bike he was told is a 1934 Big4.
The crankcase is stamped 82 x 113.
However, measuring the bore and stroke he found that it is 79 x 100mm.
So it seems that a 16H crank, barrel and pistons have been fitted.
Is this possible, can it be done easily, are the parts interchangeable?
The bike does not run well, blows out a lot of oil and smoke.
What can he do - scrap it?
Afternoon. Would it be safe to assume that a cylinder base gasket for a 1948-on M18 would fit a 1947 bike? I'm hoping that the only change was the addition of oil holes from '48. Thank you.
Does anyone know what thread the 4 3/8 short bolts that secure the rear gearbox plate to the frame spigots is - I assume BSCY? (Single down tube swinging arm frame)
Cheers
dan
Hi all - found the magdyno on my mid-fifties ES2 had worked loose. Is there any way of tightening the bolts without removing the whole timing cover and re-timing the ignition? I really don't want to unless I have to! But the access is terrible.
I'm just getting lazy in my old age!
George
