Mixture Arm Interfere with Cowling - Page 2

CharlieWaffles · #11 08-25-2016, 08:53 PM

I too have a non-stand prop spinner as I have the Hartzell 3-blade airfoil with a chrome spinner. So that pushed my cowl farther back than standard and as a result. The mixture arm is closer to the cowl where it narrows down in the front.

Drippy · #12 08-26-2016, 06:59 AM

Interesting string - I am using the standard 2 blade hartzell prop, so that isn't it.

It may be the arm I am going to take a look at how much I will need to cut it down.

Can anyone give me a rough distance from the bend or attach nut down to the attachment hole on a system that didn't require a "bump"?

Thanks

BobTurner · #13 08-26-2016, 11:25 AM

Unfortunately the issue is the rather poor tolerance control on the fiberglass bottom cowlings. (mine was terrible) The result is no two airplanes are identical as to the amount of clearance (or lack thereof) for the mixture arm. Mine just touched at full rich; I re-clocked the arm aft by one tooth, my problem was fixed. ymmv.

Drippy · #14 08-27-2016, 05:51 AM

Thanks

I will try messing with the clocking as soon as I put the cowl back on. I changed it earlier and saw some improvement possible there is a sweet spot I missed.

Quick question for you guys. Did you leave your fiberglass cloth draped over the inlet - on the outside of the cowling to give it something to hold on to? I am sanding mine now and it is at the lip of the inlet - hoping I didn't overly sand.

Thanks