Friday, May 18, 2018

Finish Kit

Cowling clean up, Cowl Pins, Oil Door revision ( 4 hrs )

Trimmed aft edges of both Top and Bottom Cowls per Steps 11 & 12 at 45-05.  Cleaned up mating surfaces per 45-06 Steps 1-4.  Started 45-07, aligning Top to Bottom along mating surfaces, holding with clamps.   After couple iterations, getting close....    Received new Cowl Pin Covers from Aerosport Products.  Will replace external tabs & screw in Vans design with these flush mount beauties !  Also received from Aircraft Spruce the large AN526A(soft)6-7 rivets.  These 3/16" dia rivets will fill the 1/4" holes pre punched in Oil Door for Quarter Turn fasteners - also external.  I'm using the KM610-64 latch that mounts flush (used on Cessnas, and many other RV builders).  Pricey, but like the flush,  easy open design.  I bought mine at Aircraft Spruce (others were lower cost, but charged much more for shipping).  So I practised filling a couple 1/4" holes in same thickness alum today.  C'sink almost flush topside, then slightly C'sink bottom to insure rivet retention.
Until I got to this point, was concerned about how the top and bottom would
be aligned. But Vans has good instructions and procedure.

Looking good!  Cowl Pin Covers with Left and Right templates

Revising Oil Door to fill two 1/4" holes in corners.  Plan to
mount Cessna style KM610-64 latch instead.

Trial filling of 1/4" holes with large "soft" 3/16" dia rivets. 
Will be able to get smooth top surface
3/16" rivets easily expands to fill 1/4" holes. Shallow C'sink on
bottom, so not sure if grind smooth, or leave some for strength.