The Murphy Builders Site

First thing I would do is check the alignment. Measure the distance from center to center across the front and then across the back. As far as I know they should be the same otherwise you have too much toe in or toe out, either of which will accellerate the wear.

Dave Jackson

Date: Sun, 11 May 2008 08:04:33 -0400> From: johnspeterson@rogers.com> Subject: [rebel-builders] Rebel 295> To: rebel-builders@dcsol.com> > Well everyone, 295 is back in the air at least for the climb test which should complete the paperwork. My son and Garry were the lucky ones - I have yet to fly it - just doing all the work!! SOOOOOON> Question I have is the front tires - put new ones on before flying and after about half a dozen TO & LDS the centre ribs of the tires are worn off much like the ones I took off. Using about 45 lbs of pressure. Too much/too little/ wrong tires - Any thoughts on this one??> > > > John Peterson> > > > -----------------------------------------------------------------> List archives located at: https://mail.dcsol.com/login> username "rebel" password "builder"> Unsubscribe: rebel-builders-unsubscribe@dcsol.com> List administrator: mike.davis@dcsol.com> -----------------------------------------------------------------> > >

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John's on amphibs!

Pressure is right John @ 45psi. Make sure the front pivot is constantly
greased so the grease acts as a dampner for shimmy. There doesn't seem to be
a right and wrong in regards to the "wavey washers" being too tight.. or too
loose on the pivot shafts.

Another option that has been tried, I'm told successfully, is to mill the
pivot shaft attach block with a slight angle on the bolting face. This will
let the pivot shaft "trail" slightly..... like I like on tailwheels to get
them to behave.

Wayne


----- Original Message -----
From: "David Jackson" <canadjn@hotmail.com>
To: <rebel-builders@dcsol.com>
Sent: Sunday, May 11, 2008 9:01 AM
Subject: RE: [rebel-builders] Rebel 295

First thing I would do is check the alignment. Measure the distance from
center to center across the front and then across the back. As far as I
know they should be the same otherwise you have too much toe in or toe
out, either of which will accellerate the wear.

Dave Jackson

Date: Sun, 11 May 2008 08:04:33 -0400> From: johnspeterson@rogers.com>
Subject: [rebel-builders] Rebel 295> To: rebel-builders@dcsol.com> > Well
everyone, 295 is back in the air at least for the climb test which should
complete the paperwork. My son and Garry were the lucky ones - I have yet
to fly it - just doing all the work!! SOOOOOON> Question I have is the
front tires - put new ones on before flying and after about half a dozen
TO & LDS the centre ribs of the tires are worn off much like the ones I
took off. Using about 45 lbs of pressure. Too much/too little/ wrong
tires - Any thoughts on this one??> > > > John Peterson> > >

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Yup, as Wayne says, make sure you enough wavey washers and make the pivot
assembly tight enough so that there is no shimmy. But not too tight, or you
won't be able to steer.

I have seen this over and over again with new amphib installations, where
people quickly wear out their front tires because of the shimmy. I have
almost 500 hours on mine, on pavement, and still not worn out, so they do
last if set up right.

Walter

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Wayne
G. O'Shea
Sent: May 11, 2008 6:27 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Rebel 295

John's on amphibs!

Pressure is right John @ 45psi. Make sure the front pivot is constantly
greased so the grease acts as a dampner for shimmy. There doesn't seem to be

a right and wrong in regards to the "wavey washers" being too tight.. or too

loose on the pivot shafts.

Another option that has been tried, I'm told successfully, is to mill the
pivot shaft attach block with a slight angle on the bolting face. This will
let the pivot shaft "trail" slightly..... like I like on tailwheels to get
them to behave.

Wayne


----- Original Message -----
From: "David Jackson" <canadjn@hotmail.com>
To: <rebel-builders@dcsol.com>
Sent: Sunday, May 11, 2008 9:01 AM
Subject: RE: [rebel-builders] Rebel 295

First thing I would do is check the alignment. Measure the distance from
center to center across the front and then across the back. As far as I
know they should be the same otherwise you have too much toe in or toe
out, either of which will accellerate the wear.

Dave Jackson

Date: Sun, 11 May 2008 08:04:33 -0400> From: johnspeterson@rogers.com>
Subject: [rebel-builders] Rebel 295> To: rebel-builders@dcsol.com> > Well

everyone, 295 is back in the air at least for the climb test which should

complete the paperwork. My son and Garry were the lucky ones - I have yet

to fly it - just doing all the work!! SOOOOOON> Question I have is the
front tires - put new ones on before flying and after about half a dozen
TO & LDS the centre ribs of the tires are worn off much like the ones I
took off. Using about 45 lbs of pressure. Too much/too little/ wrong
tires - Any thoughts on this one??> > > > John Peterson> > >

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My nosewheels will shimmy if I fail to keep the stick all the way back
untill I slow down.
Drew



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Hi John if it's conventional gear we run about 24 lbs - some of us actually
had less but there was a few flat tires on the Ramble and Ken felt that the
tires had maybe rotated on touch down a little. I had a flat in Florida when
I arrived at Sun N'Fun and yes I know I had around 20 lbs. Also the tubes in
mine were 8;50 versus the 800 and it looked like there was a grease in it.

If it's amphibs - I have know idea.

Cheers
Jim


On 5/11/2008 8:04 AM, "John Peterson" <johnspeterson@rogers.com> wrote:

Well everyone, 295 is back in the air at least for the climb test which should
complete the paperwork. My son and Garry were the lucky ones - I have yet to
fly it - just doing all the work!! SOOOOOON
Question I have is the front tires - put new ones on before flying and after
about half a dozen TO & LDS the centre ribs of the tires are worn off much
like the ones I took off. Using about 45 lbs of pressure. Too much/too little/
wrong tires - Any thoughts on this one??



John Peterson



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Thanks everyone for your input. I'll put my co-pilot to work and check it out.

Drew Dalgleish <drewjan@cabletv.on.ca> wrote: My nosewheels will shimmy if I fail to keep the stick all the way back
untill I slow down.
Drew



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John Peterson



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