[Wing] Colin Walker Propellers

[Bruce Jaques]

The builders of my RV-4  150 horse said they ordered a 68 x 68 prop but Colin recommended a 68 x 66 and it worked out perfectly.  After takeoff the rpm begins to climb at 140 mph and flat out it reaches 2700.  I sent the prop to Colin for inspection after a rock hit and endured a stiff talking to because I had been cleaning the prop with a silicone based cleaner.  Apparently it contaminated his shop when he sanded.  I have great respect his craftsmanship, though, and I'm happy with the propeller.

Bruce Jaques 
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