Various Engine Mounts have been produced
for the YS 140Ltd. Both the YS Mount and Hyde Soft mounts did excellent
jobs in protecting the airframe from vibration, and damping the noise
levels.
However, there are 3 new mounts for the YS. Merle
Hyde
produced a new light weight mount, ZN
Line
marketed the Arnaud
Poyet Mount, and finally, PL Prod
came out with a mount designed by Philippe Marquet. If you have no idea
what has been said, RCAEROSPORT will run through the 3 mounts,
with pictures for your understanding. For pricing information, contact
the manufacturers. RCAEROSPORT will not come to a conclusion, as
to which is the better mount, but leave that up to you.
If you need more information, please e-mail the about retailers, and mention
where you saw it.
Hyde Mount
Merle
Hyde
has been producing engine mounts for 18 years or so. Each mount comes
with the concept of reducing vibration to the lowest level achieved by
anyone and providing a product that just seems to yield unbelievable life,
both for airborne equipment and the mount itself. His mounts are used
by the United States F3A team, among countless other fliers, including
Akiba during the '99 WC. All Hyde Mounts come with a 3 year/3000 flight
guarantee.
Merle
Hyde
just came out with a new range of Hyde Mounts, AR(A) and ARI(A),
for the YS 140, OS 140 and Super Tiger. The (A) stands for Aluminum
Beams, replacing the regular glass filled nylon beams. The AR(A)
requires a nose ring support, and the ARI(A) incorporates the nose
ring support. Weight savings are around
40%-50% over the glass filled nylon beams.
Weight of Aluminum Beam Hyde Mounts(Similar, but Nylon Beam Hyde Mounts'
weight in Brackets):
Type AR(A) For use with customer installed nose ring : 60g(125g)
Type ARI(A) with nose ring incorporated : 115g(190g) All weights are +/- 5g
Click for an enlarged picture.
ZN Line YS Engine Mount
designed by Arnaud Poyet
Arnaud
Poyet
began to design his own engine mounts, after having problems with other
mounts on the market. He wanted to design an Engine Mount that is light
weight, durable and of superior design.
Using Computer-Aided
design on the frame design, he managed to limit the weight of the frame,
and calculate its resistance. The result is a lightweight mount of only
60g. Total final weight including mounting plate, screws, bolts, front
special plastic bushing is 86g. Only a few minutes is required to remove
the engine. For engines other than YS 140s, only a separate plate design
is needed. There is a build-in movement limitation that ensures the engine
will not hit the cowl under start-stop conditions.
For nearly a year PL Prod
considered producing a new engine mount, and several tests were carried
out with this subject. The prototype was constructed out of aluminum but
was found to be noisy and fragile. PL Prod
thus decided upon using Carbon Fiber for greater resistance, and for a
reduced weight of 85g. Both Wolfgang and Roland Matt are using the Marquet
Mount on their Smaragds. Distribution by PL Prod.
Click
for an enlarged picture
Conclusion
I
hope at the end of this, it would help in your decision of choosing the
best Engine Mount for your plane. If you are wondering, why didn't I include
pricing? Because the list price is seldom the reflection of the actual
price. It is best you find out the pricing from the Manufacturers. On
the right, is a picture of the YS DZ Engine Mount(click to enlarge). It
has stiffer and wider rubber, compared to the original YS Ltd Mount, to
absorb the vibrations. - Derek
Chan
