The Murphy Builders Site

Wayne: Thanks for the info. You certainly have gone the extra mile.
Also thanks for sharing your photo gallery with us, it's great and not
only the airplanes, but there some nice fish as well. Thats what
makes float planes worth while.

Keith P.



On 4/1/2010 2:15 PM, oifa@irishfield.on.ca wrote to rebel-builders:

-> I'm going to restate that. I just got back... out of my back field... after
-> knocking an eccentric bushing out of a C152 fuselage.. and a full set out
of
-> an Aero Commander Lark 100.
->
-> If you can get a set from a Lark.. they are the perfect width to use, as it
-> matches the gusset plate and carrythru thickness. HOWEVER.. they are
drilled
-> for 5/16th bolt. JUST enough material left to up drill to 3/8ths and the
-> bushing itself is only 1/2" OD... so not an issue for edge distance
-> remaining for the Rebel carrythru tube and gusset plate. Unfortunately...
-> they are only going to give you a TOTAL correction, if you installed them
in
-> both sides, of 1/8th of an inch.
->
-> The Cessna essentric is 11/16ths OD and drilled for a 7/16 bolt. You could
-> turn down the bushing to about 5/8ths and then mill it to match the
gusset +
-> carrythu thickness to use them. Would have to drill the wing attach
fittings
-> to 7/16ths.. which again shouldnt' be an issue.. They will give a TOTAL
-> correction of 1/4" if used on both sides.
->
-> Now if there was something in the middle.. it would be perfect. Make a set
-> from 3/4" square (or hex) stock for a wrench platform and turn it down to
-> 9/16ths. Just chuck a piece in the lathe and turn an inch section or so to
-> diameter. Then cut the section to match the gusset + carrythrough width.
-> Drill as close to an edge as you can for 3/8ths. This will give you the
-> 3/16ths you need Keith with one turned to the top and the other the
-> bottom....... and when all is said and done.. I hope you don't have to turn
-> them to make it fly straight!! LOL
->
-> Wayne
->
-> ----- Original Message -----
-> From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
-> To: <rebel-builders@dcsol.com>
-> Sent: Thursday, April 01, 2010 9:16 AM
-> Subject: Re: [rebel-builders] RE: Woe is me!
->
->
-> > Different attachment configuration than the Rebel.
-> >
-> > ----- Original Message -----
-> > From: "Rusty & Patti" <aero30@coosahs.net>
-> > To: <rebel-builders@dcsol.com>
-> > Sent: Thursday, April 01, 2010 9:03 AM
-> > Subject: Re: [rebel-builders] RE: Woe is me!
-> >
-> >
-> >> are the Cessna eccentric bushings the correct size to use on the
Rebel??
-> >>
-> >>
-> >> ----- Original Message -----
-> >> From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
-> >> To: <rebel-builders@dcsol.com>
-> >> Sent: Wednesday, March 31, 2010 10:36 PM
-> >> Subject: Re: [rebel-builders] RE: Woe is me!
-> >>
-> >>
-> >>> Just checked a Cessna wing manual.. and the eccentrics are held in
place
-> >>> by
-> >>> the tight attach bolt. Nothing else. Rigging directions are...loosen the
-> >>> attach bolt nut.. turn the bushings...tighten the nut.
-> >>>
-> >>> ----- Original Message -----
-> >>> From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
-> >>> To: <rebel-builders@dcsol.com>
-> >>> Sent: Wednesday, March 31, 2010 10:54 PM
-> >>> Subject: Re: [rebel-builders] RE: Woe is me!
-> >>>
-> >>>
-> >>>> Good point Roger and I thought of that while typing the message.
-> >>>> Haven't
-> >>>> come up with a good thought for it, other than I don't think Cessnas
-> >>>> eccentric bushings are retained by anything other than the tightened
-> >>>> attach
-> >>>> bolt. On a Cessna.. if I'm not mistaken.. you loosen the attach bolt
-> >>>> and
-> >>>> turn the eccentric with a wrench to where you want it and
retighten the
-> >>>> attach bolt.
-> >>>>
-> >>>> Dick... you're the guy with all the Cessna maintenance years.. is that
-> >>>> correct???
-> >>>>
-> >>>> Wayne
-> >>>>
-> >>>>
-> >>>> ----- Original Message -----
-> >>>> From: "Roger Cole" <rcole927@earthlink.net>
-> >>>> To: <rebel-builders@dcsol.com>
-> >>>> Sent: Wednesday, March 31, 2010 10:37 PM
-> >>>> Subject: Re: [rebel-builders] RE: Woe is me!
-> >>>>
-> >>>>
-> >>>>> What prevents the eccentric bushing from turning after the wing is
-> >>>>> correctly aligned?
-> >>>>> Roger Cole
-> >>>>> Murphy Elite #709
-> >>>>> rcole927@earthlink.net
-> >>>>>
-> >>>>>
-> >>>>>
-> >>>>> On Mar 31, 2010, at 4:41 PM, Wayne G. O'Shea wrote:
-> >>>>>
-> >>>>>> Thank god for that! Now remember when you put the bolts in thru
the
-> >>>>>> eccentric bushing to use Penny washers on the outside of the
-> >>>>>> carrythru
-> >>>>>> gusset.. to retain said bushings.
-> >>>>>>
-> >>>>>>
-> >>>>>> ----- Original Message -----
-> >>>>>> From: <kpierson@dcsol.com>
-> >>>>>> To: <rebel-builders@dcsol.com>
-> >>>>>> Sent: Wednesday, March 31, 2010 3:17 PM
-> >>>>>> Subject: [rebel-builders] RE: Woe is me!
-> >>>>>>
-> >>>>>>
-> >>>>>>> To all who responded to my post.
-> >>>>>>> What I was talking about is angle of attack.
-> >>>>>>> Wayne of course your correct, 3* over the length of the wing
cord
-> >>>>>>> would be rendundant. In my haste I neglected to put a period in
-> >>>>>>> front
-> >>>>>>> of the 3, it should have been POINT 3* which gives the R. wing
about
-> >>>>>>> 3/16" more angle of attack. I had a similar situation with my
-> >>>>>>> Meranda
-> >>>>>>> and it wanted to turn left until I fixed it. And as you said farings
-> >>>>>>> cover a lot of mistakes.
-> >>>>>>>
-> >>>>>>> I like the idea of the eccentric bushing rather then trim tabs.
-> >>>>>>> Drill an
-> >>>>>>> over sized hole get a piece of aluminum rod that size and drill an
-> >>>>>>> off
-> >>>>>>> set hole in it. Easy fix right? Getter done!
-> >>>>>>>
-> >>>>>>> As long as I have everyones attention I have a question about
the
-> >>>>>>> neutral position for the flaperons. Using the sheet of paper with
-> >>>>>>> the
-> >>>>>>> various angles, that is supplied in the manual and glued to card
-> >>>>>>> board, it would seem that the 0* line should be neutral position
-> >>>>>>> because the trailing edge of the flaperon is even with the top of
-> >>>>>>> the
-> >>>>>>> fuselage. However, I read in a post sometime back
-> >>>>>>> where it was indicated that the front portion of the flap, the flat
-> >>>>>>> portion, should be parallel with the bottom of the wing thus
putting
-> >>>>>>> the trailing edge up at a 5* angle. It would seem to me that this
-> >>>>>>> would
-> >>>>>>> be
-> >>>>>>> better as a cruise position? And also would be hard to make a
-> >>>>>>> faring fit.
-> >>>>>>>
-> >>>>>>> Thanks to everyone:
-> >>>>>>> Keith Pierson
-> >>>>>>>
-> >>>>>>>
-> >>>>>>> On 3/30/2010 7:36 AM, kpierson wrote to Rebel builders:
-> >>>>>>>
-> >>>>>>> -> This might be a good lesson for new builders.
-> >>>>>>> -> I am the third owner/ builder of a not yet completed Rebel kit,
-> >>>>>>> and
-> >>>>>>> -> as such I have found a few things that I felt needed to be
-> >>>>>>> corrected
-> >>>>>>> -> one such discrepancy was two of the five bolts that hold the
lift
-> >>>>>>> -> strut attachment brackets to the spar, these five bolts were
-> >>>>>>> all the
-> >>>>>>> -> same length and the original builder had installed two 1/16"
-> >>>>>>> washers
-> >>>>>>> -> on each bolt one under the head, and one under the nut,
this was
-> >>>>>>> -> OK for the top three, however, the bottom two must
penetrate
-> >>>>>>> -> thicker material so this left no thread exposed beyond the
nut. I
-> >>>>>>> -> simply removed the two thick washers and installed one thin
one
-> >>>>>>> -> under the nut. Easy fix!
-> >>>>>>> ->
-> >>>>>>> -> More recently while trying to adjust the control system I was
-> >>>>>>> unable
-> >>>>>>> -> to get the flaperons to opperate correctly, no matter what I
did
-> >>>>>>> -> the right one would allways go down too far but would not
go up
-> >>>>>>> far
-> >>>>>>> -> enough. After much cussing and hair pulling I decided to take
-> >>>>>>> some
-> >>>>>>> -> measurements and found the R. wing is angled up 3* more
then the
-> >>>>>>> -> left, however, but it matches the profile of the fuselage
-> >>>>>>> perfectly.
-> >>>>>>> -> As it turns out the fuselage is the culprit, I can only assume
-> >>>>>>> that
-> >>>>>>> -> the original builder did not square it up before riveting it
-> >>>>>>> together.
-> >>>>>>> -> Woe is me NOT AN EASY FIX? Trim tabs I guess?
-> >>>>>>> ->
-> >>>>>>> -> Keith P. 318R
-> >>>>>>>
-> >>>>>>>
-> >>>>>>>
-> >>>>>>>
-> >>>>>>> --------------------------------------------------------------
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