Is there a down side to the CS washers? Well, for me it was the stainless steel CS washer look and the Stainless steel counter sunk screws arranged in the solid white painted wheel pant. I got over that...somewhat.
Paint does not adhere well to stainless steel, so I thought I might try powder coating the washers and screws. I have not done that let, but will give it a try in the future.
if you're installing CS screws and don't start off with tinnermans, you will eventually end up with tinnermans.
I am more worried about the FG hole getting wallowed out, more than a .043 MPH increase, I see RVs taxiing and the pants are doing some kina wild tropical Hawaiian dance.
Hey Bret - don't worry too much. All three of our RV's have NO Tinnerman washers for the #6 screws that hold the front and back halves of the wheel pants together, and NONE of the holes have shown even the slightest amount of wallowing out - and that is 1700 hours and close to 8 years on the RV-8s pants.
For the four #8 screws that attach the pants to the brackets - yes, absolutely - we use the Tinnermans. They are carrying the load.
The pants on the -8 have been rebuilt a number of times due to flat tires and falling-off-the-edge-of-the-apron mishaps....but we have never had to touch the #6 screw holes - they haven't worn at all.
Paul
I know there are thousands of these things flying....