[SEL] Bamford EV1 valve timing

[Rob Skinner]

> Any suggestions from Bamford experts or any one else would be 
> great and
> should the cam gear timing mark line up with anything ?

Hi Rod, 
It's been my experience that the early engine builders didn't have the same
beliefs regarding valve timing that we have.  And honestly, it's not super
critical with our slow running engines.  If the exhaust opens at 25 degrees
rather than 45, the gases still have plently of time to evacuate the cylinder.
After all, you're not building a nitro burning funny car.  In fact, later is
probably better.

If it was me, I'd retard everything fifteen degrees and call it good.  Also,
remember that the rate of piston movement is a sine function.  The closer the
piston is to 0 or 180 degrees after TDC, the closer the velocity of the piston
is to zero.  A few degrees either way isn't going to make a rat's googly.  

Rob

=-=-=-=-=-=
Rob Skinner
La Habra, California
mailto:rskinner at rustyiron.com
http://www.rustyiron.com