In addition to the mounting tape, the author applies silicone
adhesive to make sure that the servo never comes loose.
servos using double-sided tape. The tape you use
is the conventional 3M variety
that consists of thin foam with
adhesive on either side. Purely by
accident, I found another 3M tape
that works better. You might want to
share this with your readers.
A637: George Kuehn provided this
information and pointed out that the
foam mounting tape that I have been
using for years is called the 3M Indoor
Mounting tape. The tape that George is
referring to is 3M Scotch 4011 Exterior
(or outdoor) Mounting Tape.
This tape is 1 inch wide and 60 inches
long. It does not contain foam, so it is
thinner. Red in color, it has a protective
backing that you must remove. I was able
to find it at my local Home Depot store.
The cost per roll is approximately $5.
The first thing I noticed when I tried
this new tape is that it has a very strong
adhesive. When you tape a servo to the
inside of your fuselage, it is going to stay
there. George points out that you should
rub some CA glue in the area where
the servo is to be placed. This allows the
adhesive to bind even better. He likes to
apply the tape to the servo first and then
maneuver it into position.
Another suggestion from George is to
place a length of dental floss between
the bottom edge of the tape and the
servo body, with the loose ends dangling
out on either side. That way he can
remove the servo, if needed, by pulling
upward on the ends of the floss.
Just to be thorough, I always apply
some silicone adhesive at the joint
between the servo and the fuselage.
The adhesive I recommend is Permatex
Adhesive Sealant Clear RTV Silicone
(No. 80050). A 3-ounce tube will cost
you approximately $7, but it is worth it.
It cures firmly in an hour and is totally
cured in 24 hours. I purchased this
product at Advance Auto Parts. I have
also found it at Walmart and at Ace
Hardware. Google the product name to
find a list of distributors.
After having discussed this, is this
mounting tape and adhesive the way
to go all of the time? I think not! It has
been my experience to use the tape/
adhesive on models such as a large park
flyer, up to approximately 150-watt
input power. Beyond that, I still use
the time-honored wood bearers
Those are my thoughts. Thanks
to George for introducing me to the
outdoor mounting tape.
BSD Micro RC LLC
Dumas Products, Inc.
87 Model Aviation DECEMBER 2016 www.ModelAviation.com