TEST- now motor mount Poll

[george kennie]

That's excellent weight. I think I used a 1/4X20 bolt and it weighed a
lot. Heck I think my snubber block weighed that much.
G.

Ed Miller wrote:

>  Center and "snubber bolt" size is 10-32 stainless steel with aluminum
> nylon lock nuts and aluminum washers. The engine hold down bolts are
> 6-32 steel with steel washers. The Rotomount in my EMC complete with
> all hardware, snubber block, lightly coated with epoxy and painted
> black was 2.6 ounces. My clayton foster nose ring with 2 4-40
> aluminum bolts and blind nuts and lite ply mounting ring with
> lightening holes was just under an ounce. So the total engine mounting
> assembly including everything except firewall was 3.5 ounces. Firewall
> is 1/8" lite ply. The mount is constructed of maple beams tapered and
> pared down to hold the engine and the beams are glued to a 3/8''
> plywood disc that has been lightened. The snubber and center bolts are
> surrounded by silicone tubing of 2 different outside diameters.When I
> was building my EMC I was looking at every piece that went into it to
> ensure I would make the 11lb weight limit, plane ready to fly came out
> at 4861 grams or 10 lbs 11 oz. As a side note, I saved 24 grams in
> hardware but using either aluminum or stainless steel throughout the
> plane. One good thing about the rotomount is you don't get the slight
> side to side movement at the back of the engine that you do with the
> Hyde mount. Yeah, it takes some work and we seem to be in an era of
> buy and fly but with a little time and creativity, it can be done. Bob
> Pastorello has an excellent soft mount also.
>
>      ----- Original Message -----
>      From: george kennie
>      To: discussion at nsrca.org
>      Sent: Friday, January 02, 2004 8:04 PM
>      Subject: Re: TEST- now motor mount Poll
>       Ed,
>      I'm curious as to what size center bolt you employ in your
>      roto-mounts? I tried making one and the weight came out at a
>      little over 5 ounces. I abandoned the idea in favor of a
>      simplified version of a Hyde that I can make at 3&1/2 oz.
>      With the exception of the Sig rails mine costs about 25
>      cents.
>      Georgie
>
>      Ed Miller wrote:
>
>     > Hanson Rotomount and Clayton Foster nose ring get my vote.
>     > The Rotomount can be made very light and it's adjustable
>     > for firmness and thrust angle. I've had 5 planes with it
>     > without any problems. Works on the same principle as the
>     > Hyde mount in that it allows the engine to rotate along
>     > the crankshaft centerline. A side benefit is it costs less
>     > than 10 bucks to make.Ed M.
>     >
>     >      ----- Original Message -----
>     >      From: Nat Penton
>     >      To: discussion at nsrca.org
>     >      Sent: Friday, January 02, 2004 5:02 PM
>     >      Subject: Re: TEST
>     >       Bill I believe if we could get people to convey
>     >      their likes and dislikes on engine mounts we
>     >      could all benefit. (At least we would'nt have to
>     >      bring up the downwind turn).       Nat-----
>     >      Original Message -----
>     >
>     >           From: William C. Harden
>     >           To: discussion at nsrca.org
>     >           Sent: Friday, January 02, 2004 3:16 PM
>     >           Subject: RE: TEST
>     >           Quite on the list today, isn’t it?
>     >
>     >           Bill
>     >
>     >           -----Original Message-----
>     >           From: discussion-request at nsrca.org
>     >           [mailto:discussion-request at nsrca.org] On
>     >           Behalf Of Dwayne & Nancy Brown
>     >           Sent: Friday, January 02, 2004 12:34
>     >           PM
>     >           To: Society of Antieque Modelers; Slow
>     >           Flight RC; Senior Pattern Association;
>     >           Pattern List; Pattern; GSAL
>     >           Subject: TEST
>     >
>     >           TEST
>     >           Dwayne
>     >
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