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Thanks Bill,
Your integral sump idea is good also and may be the strongest. Mine is
better if you want to remove the sump without removing the engine.
Your right, Larry could do a lighter version - me, I like it a little
heavier, I'm a shocker for overdesign, especially if it's the main mounting
method. I have been scratching my head for a couple of years now, and the two
methods mentioned here are the best that I can see. I'm not knocking PL
Bellhousing, but we are talking engine mounts here. It's either one or the
other, of the methods mentioned.
George ( down under)
George, I really liked your bellhousing! I believe with a guy like Larry
cutting the form CNC yours would be the "way to go!" With a CNC'ed form
I don't even think it would weigh more than a pound more. I like it because
with simple add ons you could fit almost anything.Much more flexible. That is
what you and Butch were after anyway right? An aside, you might look at
the way that Mistral is going with the 20B based engine. The bellhousing is
tapped and the bed mount is attached in the same position as your pads! The 2
rotor could use the lightest setup possible. The 3 rotor is light enough that
a good mount a few pounds heavier wouldn't make any difference to me at all. I
think you were going the right direction.
Bill Jepson (But then you knew that already didn't you George?)
That's why I designed a bellhousing ( with
Butch) with side pads for engine mounts.
George (down under)
Robert,
Funny you should ask. I have been working on
this problem for a while. Those devils at Mazda seem to have
conspired to make the Renesis very hard to design a mount for. They took
away the point for a mount on top of the engine. They moved the engine
mount bolts all over the place and put a lot of exhaust and plumbing
in the way . It was as if they sat down and said....how can we make this
engine really really hard to instal in an airplane.
I would have to agree with Lynn on this one.
I am going to use the plate option. I will be modifying it so that it
is lower profile. The plate will be the size of the engine pan and the
bolts will go in from the side. The standard conical mounts will be on the
sides as close to the engine as I can get them. Imagine a hybrid between a
bed mount and a P51 beam mount.
It is a difficult problem if you have a
tight cowl.
Don't rely on the engine mount to help you if
you loose a prop blade!!
Put at least a 3/16 safety cable on the
engine.
There are some design suggestions
here:
Monty
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