4.2mm = 0.1654 inch and #19 = 0.1660 (close enough) but there is no
fractional diameter close enough (although the manual calls out 11/64 as the
"equivalent" in the only mention of drilling holes this size, which is to
mount the trim servo).
4.8mm = 0.1980 inch and #12 = 0.1980 (exact) and the nearest fractional size
is 3/16 = 0.1875 which is most likely too small, especially since most of
the 4.8mm holes are for bolts that require a snug fit - don't use "close
enough" for these holes.
10.2mm = 0.4016 inch and Ltr Y = 0.4040 (probably close enough, especially
for the tapped holes for flap pins and lift pins) but there is no fractional
diameter close enough
12mm = 0.4724 inch and the closest fractional is 15/32 = 0.4688 (probably
close enough, especially for a clearance hole for the lift pin sockets,
which I did not need to drill)
Also mentioned in the manual are:
For rivet holes, 2.4mm = 0.0945, with the closest equivalents of 3/32 0.0938 and
#41 = 0.0960
For the fuel selector valve spindle, 8.0mm = 0.3150 with the closest
equivalent Ltr O = 0.3160 (close is certainly good enough for this one, and
even 3/8 would work fine)
Best regards,
Rob Housman
Europa XS Tri-Gear A070
Airframe complete
Irvine, CA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Fred R. Klein
Subject: Europa-List: metric drill bits
Hi to All who have gone before me,
I make note of the list of metric drill bits on Pg. 1-3 of manual. After
determining that the 3.3mm bit is essential for the flush pop rivits, I've
found that McMaster-Carr carries a line of metric drill bits.
Lazy as I am, I have not searched through the entire manual to determine
whether the 4.2mm, 4.8mm, 10.2mm, and 12mm are similarly essential, or if
they are simply metric equivalents for the listed fractional-inch sizes also
listed.
Before I order all the listed metric bits, can someone enlighten me as to
whether or not they are essential...assuming of course that one has a full
set of fractional-inch bit sizes?
Metrically-challenged Fred, A194
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