Lower Cowling Chafing

[Releew]

Annual time and I have run into a problem that was not there on the previous inspection or last 50 hour.  There is chafing (~1/16 deep) on the Passenger In-board Cowl Flap Hinge as well as the In-board Pilot side Cowling (~2" Right of the in-board hing)  It is very apparent its being caused by the collection canister/muffler.  My mechanic tried to raise the canister on the risers but there is very little adjustment, if any. I am trying to figure out exactly what's sagging and why all of a sudden.

 

Possibly the motor mounts???? 

 

As always, any advice would be greatly appreciated.

 

Thanks,

 

Rick

[Releew]

Haven't place the cowling back on.  Will check first thing!

 

Thanks!

[jetdriven]

The lasar cowl kit helps but I ditched the non floating camloc receptacles and made a stopper block on the top cowl. Camloc receptacles are not designed to accept that kind of shear load. It wears out the holes in the cowl. Here's the result. A deadass 1/16 gap. A run into the ditch and total the airplane look still a 1/16" gap.

[Releew]

Looks like it is the compression of the lower mounts. 

 

Thanks!!!  Rick

[Releew]

Which is the better mount? Lourds or Barry? Barry is on there now. Lourds mounts are less expensive but I want the best for the aircraft.

Any experiences????

Rick

[N201MKTurbo]

I've used both and I can't tell the difference. Usually Lord mounts are more then Berry. I buy whatever is cheaper.

[Releew]

Thanks. I'm digging for a deeper explanation.  Is one better based on longevity or vibration isolation?

 

Rick. 

[Shadrach]

The lasar cowl kit helps but I ditched the non floating camloc receptacles and made a stopper block on the top cowl. Camloc receptacles are not designed to accept that kind of shear load. It wears out the holes in the cowl. Here's the result. A deadass 1/16 gap. A run into the ditch and total the airplane look still a 1/16" gap. image.jpg

Byron would you mind elaborating on your install/mod.  That looks rather precise compared to wha I often see.  The F has no gap, because its an overlap, but it is easy to see the cowl moves even after it's fastened...

[Releew]

Went with the Berry mounts.  Installed today.  The aircraft shows a noticeable improvement in flight.  Less vibration, my left rolling tendency is gone and I feel it rotates easier off the ground.

  

Before flight the spinner back-plate was aligned perfectly with the cowling.  Upon landing it looked like it dropped ~.25".  My APIA says perfectly normal......  I hope so!

 

Thanks Rick