What You Pay For
are so many experienced pilots willing to pay the extra
money for an authentic Hyde engine mount? Most likely,
it's because they understand what a Hyde Mount does.
Numerous tests have been run to determine vibration levels,
with and without a soft mount. While conducting those tests,
one area of the measurements proved to be very interesting.
It had to do with measuring the current draw in a typical
aircraft with 8 servos connected to the receiver, with the
engine hard mounted, and with zero stick movement from the
Hard mounting drains power faster. In the case of
"hard-mounted" engines, before an engine was started, it was
determined from the flight pack that there was 95mA
of current being drawn. But after starting the engine
and running it up to full throttle, the current went up to
375mA. It seems the servos were consuming more
current, with a hard mount, just to keep the surfaces from
moving because the full vibration of the engine was being
directly transmitted through the airframe to the control
Tests show that it requires an extra 280mA of current
just for the servos to keep surfaces in a stationary
positions — and that's with zero control stick movement.
Next, the engine was re-installed with a Hyde Mount.
Before starting, the current was checked at 95mA, as
in the previous test. However, when the engine was run
up to full throttle the system only drew 125mA, which
means that the mount isolated enough vibration from the
aircraft control surfaces to add only a 30mA work
load on the servos, instead of the 280mA with the
hard-mounted engine. This test was repeated, since the
results were so surprising. But the facts did not
significance of this?
If we can reduce the vibration on just our servos, we can
extend their life by 10 to 15 times. But that's not
all. Think about the long-term effects on the integrity of
the airframe, and the reliability of the entire aircraft.
You do the math, and then subtract the price of the Hyde
Mount from it.
Assuming that the above results also prove true for most of
us and our aircraft, can’t we also expect to see increased
flight times from a single charge on our flight packs?
It stands to reason.
And that’s exactly what they found with further testing.
Typically, if you recharge at a given cut-off voltage by
using an expanded scale voltmeter, you'll average 2 to 3
times as many flights per charge with a Hyde Mount as you
would with a hard mount. If you usually get 2
flights per charge, you can expect to increase that up to 4
or maybe even 6 flights before charging is required.
So does a few more flights out of a charge on receiver pack
justify an expensive mount? Well, no. (And that
alone isn't the point.)
After all, why not buy a cheaper isolation mount and
accomplish the same thing for less money?
Here’s one reason why. Several other isolation mounts were
tested against the Hyde Mount. None of them came even close
to the Hyde Mount's performance. In fact, most didn’t
change the current flow readings that much from a
hard-mounted engine. In fact, one of the other isolation
mounts actually pulled more current, as it increased
the work load on the servos!
This information isn't offered just to justify selling "more
expensive" engine mounts. In fact, one of the “other” mounts
tested was actually more expensive than the comparable Hyde
Mount. But you have the right to know why so many serious
pattern fliers are using the Hyde Mount.
If you’re interested in more
details or specifics on the mounts that were tested, contact
Merle Hyde at 702-269-7829 or email at
He conducted much of the testing himself, looking to develop
mounts that will solve real problems for R/C pilots and
And please don't ask us at Central Hobbies which mount was
the “second best”, or the absolute “worst”, etc. We can only
recommend the winner — the Hyde Mount. It’s the one we use!