11-04-2014, 12:05 PM
Just ordered the material for the crank --flywheels ETC.
So I will get on with the cam redesign I originally was going to make the rockers from bronze with flat cam follower but I think that the inertia of these relatively large rockers may be to great for the valve springs, so I have changed to alloy rockers with roller followers.
All well and good but the original flat followers initially lift at the tips of the cam and the rollers lift at the base circle this makes the rollers slower to respond and more affected by valve clearance.
So I have cut a cam that I think is ok and made a test rig to determine the point of initial lift so I can get the profile correct.
Slowly slowly.
Brian
So I will get on with the cam redesign I originally was going to make the rockers from bronze with flat cam follower but I think that the inertia of these relatively large rockers may be to great for the valve springs, so I have changed to alloy rockers with roller followers.
All well and good but the original flat followers initially lift at the tips of the cam and the rollers lift at the base circle this makes the rollers slower to respond and more affected by valve clearance.
So I have cut a cam that I think is ok and made a test rig to determine the point of initial lift so I can get the profile correct.
Slowly slowly.
Brian
