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| Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
07-24-2009, 02:59 AM
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Does anyone know how the compression release works?
the hole type thing in the cylinder to ease starting....
I can understand a 4 stroke has either manual (released after starting) or auto (releases at an engine speed above cranking) but how would a 2 stroke compression release work? Surely it must have some mechanical components to stop the release of air with the engine started...
__________________
'05 Gas Gas 300 '97 Aprilia Pegaso 650 '99 KTM 200 '95 ish XR630 (died many times in Oz) 
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#2
07-24-2009, 10:37 AM
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It is "controlled" by piston velocity.
While kick starting, the piston is moving slow enough to allow some blow-by. Once the motor is running the piston is passing by the port at a rate quick enough that there is not enough blow-by to affect the compression.
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