Hi all.
I tried to find some info about clearance between piston and cylinder head at TDC but no luck.
I guess cylinder ports size/position may affect the clearance and whether or not the engine uses exhaust lap.
Is there's any rule of thumb for this or some engineering must be done before setting the value/ratio?
If too much clearance is used to be "safe", I guess overall performance will be reduced due to the slow pressure build up in the chamber,
and may also result in higher steam consumption to achieve the engine rated power for it's size.
But if there's not enough clearance the engine will have a hard time to compress the steam left over by the exhaust lap (if any...).
Thanks, Deckel
I tried to find some info about clearance between piston and cylinder head at TDC but no luck.
I guess cylinder ports size/position may affect the clearance and whether or not the engine uses exhaust lap.
Is there's any rule of thumb for this or some engineering must be done before setting the value/ratio?
If too much clearance is used to be "safe", I guess overall performance will be reduced due to the slow pressure build up in the chamber,
and may also result in higher steam consumption to achieve the engine rated power for it's size.
But if there's not enough clearance the engine will have a hard time to compress the steam left over by the exhaust lap (if any...).
Thanks, Deckel