Aeroplane and Commercial Aviation News, 48. kötet1935 |
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10. oldal
... valve would appear to have almost every advantage over its almost universally used rival , the poppet valve . The rotary valve offers a cool , highly polished sur- face to the flame , provides ample port opening , positive timing at ...
... valve would appear to have almost every advantage over its almost universally used rival , the poppet valve . The rotary valve offers a cool , highly polished sur- face to the flame , provides ample port opening , positive timing at ...
1. oldal
... valve housing cut away to show the piston and valve inside . To permit sufficient gas to enter the cylinder at these high speeds the port opening must be large and the 250 c.c. engine has a port 28 mm . square giving 7.84 sq . cms ...
... valve housing cut away to show the piston and valve inside . To permit sufficient gas to enter the cylinder at these high speeds the port opening must be large and the 250 c.c. engine has a port 28 mm . square giving 7.84 sq . cms ...
6. oldal
... VALVE GEAR . - One exhaust and one inlet valve per cylinder , each with double springs . Hardened steel button on valve - stem . Each is worked by roller - ended rocker . Rockers lubricated by grease - gun . Tubular steel push - rods ...
... VALVE GEAR . - One exhaust and one inlet valve per cylinder , each with double springs . Hardened steel button on valve - stem . Each is worked by roller - ended rocker . Rockers lubricated by grease - gun . Tubular steel push - rods ...
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