The Murphy Builders Site

Fred,
I filled off mostly on the gear leg and went for a snug fit. I fit the
saddle to the leg off the airplane and tightened the saddle to the leg after
it was in place. I cut holes in the bottom of the sills to access the
saddle bolts.
Al Paxhia, SR26

----- Original Message -----
From: Fred Darnell <fdarnell@carolina.rr.com>
To: <murphy-rebel@dcsol.com>
Sent: Wednesday, October 11, 2000 6:13 PM
Subject: Mounting gear legs to saddles on SR

Anyone here with experience mating the main gear legs to the saddles
(FUS-309/FUS-310) on the SR? I understand they are to slide into the

saddles

and that the fit should be tight. I've rounded the corners of the gear

legs

to match the radius in the saddles. I've filed the sides of the gear legs
slightly to clean them up, and filed the inner sides of the saddles to

open

them up from 4.975" to 4.90". The gear leg is 5.005" wide, so it's still
about .015" to big. File off too much and the gear will eventually slide
around and enlarge the saddles through use. Should I keep filing the

saddles

or get a bigger hammer? Any hands on experience?

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Anyone here with experience mating the main gear legs to the saddles
(FUS-309/FUS-310) on the SR? I understand they are to slide into the saddles
and that the fit should be tight. I've rounded the corners of the gear legs
to match the radius in the saddles. I've filed the sides of the gear legs
slightly to clean them up, and filed the inner sides of the saddles to open
them up from 4.975" to 4.90". The gear leg is 5.005" wide, so it's still
about .015" to big. File off too much and the gear will eventually slide
around and enlarge the saddles through use. Should I keep filing the saddles
or get a bigger hammer? Any hands on experience?

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Fred,
I'm no expert here, but <I> sure would think it would be MUCH
safer to file down the gear leg, rather than the saddles. The saddles
are a major part of the fuselage structure - the gear legs can always
be (fairly) easily replaced later ...

.....bobp

------------------------------orig.----------------------------------
At 09:13 PM 10/11/00 -0400, you wrote:

Anyone here with experience mating the main gear legs to the saddles
(FUS-309/FUS-310) on the SR? I understand they are to slide into the saddles
and that the fit should be tight. I've rounded the corners of the gear legs
to match the radius in the saddles. I've filed the sides of the gear legs
slightly to clean them up, and filed the inner sides of the saddles to open
them up from 4.975" to 4.90". The gear leg is 5.005" wide, so it's still
about .015" to big. File off too much and the gear will eventually slide
around and enlarge the saddles through use. Should I keep filing the saddles
or get a bigger hammer? Any hands on experience?

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The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
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Fred,

Sorry for the late response, but...

We encountered the same fit with our gear legs. We ended up putting the
legs in a vertical milling machine and took off approx. 0.020", only on
the sides in the saddle mount area. You don't want to remove the small
radius inside the saddle mounts.

We also had the edges of the gear legs chamfered, by hand (mostly
cosmetics). We sure wish MAM would have ground these down by machine
before rolling the legs.

Peter Kopasovic & Monica Piquette
SR003

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