I have just come from a disheartening day of adjustment of the mountings for
the 914. This development is the result of some unfortunate decisions taken
too early and with which I now have to contend.
As I mentioned in an earlier email, I had difficulty in assembling
the Lord mounts and metal cups in order to instal the bolts AN5-41s which
are only able to contain the rubber mounts once the latter are comprssed.
Thanks to several for the suggestions of using substitute bolts to begin
with, so that the mounts can be pre-compressed.
What eventuated was that I found some plain metal straps (about
1"x5"x1/8") - used for strapping to wooden joints for security - and cutting
and bending these as 'clips' when the temporary bolts are removed in favour
of the real thing. These are formed so as to produce a shape with 1/2inch
arms at 90deg to a body which will grasp an object 1-15/16" long (that is
the length of the compressed Lordmount - metal cup to metal cup. Being
simple steel they are easily thumped into adjust to clip over the cups (two
per setup) such that either end of the accompanying frame can be reached
without blanking the 1/2" hex head or castellated nut. Drawings direct on
request.
Once you have clipped these onto either side, you can then ease the
temp. bolt out and gingerly insert the AN5-41and have space to spin on the
nut. I am not looking forwqard to the same attempt when adding the requisite
thin washers for shim to cant 914 1.5deg starboard to the bottom port bolt .
But I don't know an y better way. (Your number of shim washers will vary of
course).
I have now had the 914 on and off four times - once to assess length
of engine harness required ahead of firewall, once to try to install AN5
bolts, again to test for engine shim (AN906-516L washers are 0.05" thick and
appear to make a difference of 0.186" when the distances are measured. I was
out by about 1/2" so needed 4 wahers top and bottom. The book says do only
one bolt but of course both top and bottom are required.
Have I gone on enough?
Happy landings
Ferg
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