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<< Lancair Builders' Mail List >>
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I inspected the nose strut today, it has two
short roll pins, one in front and one in back.
After 1400 hrs they haven’t moved. A piece of
.090” hinge pin material slides nicely through
the center of the front roll pin to knock out the
rear pin. The front pin can than be knocked out
from behind. The holes were drilled out to a # 12
in small increments using oil on the drill bits.
The material is not as hard as it looks, maybe
they forgot to heat treat mine. The chips were
blown out using stoddard solvent and dry air. An AN3-17 bolt was coated with RTV to seal out
moisture and installed from the rear for ease of
inspection and because the bolt head is on top in
the well. What do you think?
Regarding the seat pan lip, I haven’t had this
problem but you might consider adding 1 or 2 bid
on the inside surface of the lip onto the spar to
eliminate the peel stress.
Regarding brakes, my early (vintage 89) matco
brake pads wore rapidly on the outer edge and
very little on the inner edge causing the backing
plate to tilt. After two sets like this I removed
the plates, soldered shut the rivet holes and
drilled new holes, moving the pads radially
outward as far as possible, reducing pressure on
the outer pad material and increasing pressure on
the inner pad material. The outer edge nearly
grazes the disk screws. I also switched to
Cleveland pads. Several years later my first set
of Clevelands show about 30-40% even wear on the
right side and very little wear on the left.
Matco may have addressed the geometry problem
since then.
If safety wire on the screws rubs the pads, it
will cause a clicking sound.
Great ideas on the cutting table. One I haven’t
seen yet is to roll all the cloth out on the
table, connect the two ends and roll it back up.
It comes off ready to go in a two bid layup. It
takes some time and patience to prevent the cloth
from pulling out of shape but saves time and
material in the end. Keep some scraps around for
when you need one or three bid.
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BILL HANNAHAN
WFHANNAHAN@YAHOO.COM
LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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