Hi Wariel,
The yellow gears have crank pins fitted to one end that have links that control the blades.
These links stop the blades from touching the rotor. To use centrifugal force to hold the blades out would cause too much friction. At 2000rpm each blade would weigh 140kg. At 2000rpm this engine has 666 ignitions per second so the internals would be very busy.
Regards Dale |