La Chalk Francais
Apologies for having to drop out ... mainly due to work!
The infamous French Chalk (normally white) is available from major parts factors, although the two tubs I had to buy this week were a horrid 'yellow' ... but fashion aside, the stuff works especially well when used on the Enstrom drive system and is correctly applied. Flying serial number 1104 yesterday even with a new pilot, rotor engagement was totally silent throughout the whole engagement process. The chalk also helps soak up unwanted engine oil in the drive belt compartment.
But to re-state. The belt system MUST be adjusted correctly since there should be nil 'dragging' of the M/R blades at engine idle 1400 - 1500 ... and certainly not to the extent earlier advised where engine and rotor speed become 'married.' .................... now back to the grind stone! DRK