valve spring data

[victor]

Hello B 50 riders
I read on the workshop manual for the outer valve spring
free 42.4 mm
fitted 33.3 mm
also I have 9.1 mm of lift
When I crush a new spring on the scale at 9.1 mm I get 30 kg
same method for the inner , 20 kg at 7.1 mm
is the method is correct ?
do you have technical data on valve springs ?
is it possible to use genuine spring in road racing ?
interesting to know that the springs of B 50 are the same as those of the Gold star ..

all is fine
Jean Paul

[beat]

interesting to know that the springs of B 50 are the same as those of the Gold star ..

.... and as the ones of a Morris and Austin Minis cars.
at least I was told like this, - so I bought a set of 8 springs, fitting them in the B50 and was happy for many many miles with....

beat