clutch engagement
 

can anyone please help with info about general overheating and local overheating in unified clutch in SA 315 LAMA

Clutch heats at startup to engage, when the skates skating......:p

What you think by local and general overheating?

you have a minimum time and maximum time to engage.
The mini is to avoid damaging the clutch by a violent impact when the blade start running
The maxi is precisely not to heat the clutch by a too long skating..

If by engaging normally = 1000t / min more than the idle and 50 ° more than the ide T4 you do not clutched in the maximum time, you must think about changing the clutch

thank you
actually wanted some explanation in metallurgical perspective

inside the clutch they are skates controlled by spring.
at Idle nothing happen. When the rpm increase, the centrifugal force is more than the spring force, so the skate touch the bronze ring and engage the clutch.
The bronze part of the clutch is there to dissipate the heat better than steel.

thanks a lot