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Amphib Wheel Bearings & Tires

Posted: Fri Feb 17, 2012 8:34 pm
by Wayne G. O'Shea
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Your following message has been delivered to the 167 members of
the list murphy-rebel@dcsol.com at 20:23:39 on 23 Nov 2000.
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Drew (and ALL),

There has been no problems with the front bearings (that I know of) as they
should not be under water long enough to fill up with water (under normal
usage), unless you are putting them down to drive up ramps, etc. Even then
they are also sealed with rubber seals on both sides to help hold the grease
in, and to keep the water out. The front wheels are also easy to work on at
a dock, or on the ground etc, and you can pop the grease seals out with an
O-ring pick and repack them if ever necessary (or just replace with new ones
for about $7 a bearing). The main gear is a bit more of a chore to work on
than the nose wheels, so it is worth the extra steps to insure some
longevity of the bearings (and to save about 6 hours of work to do the
bearing change, the need for some kind of lift, etc). If you had of been one
of the unlucky soles that have the original swing arms (like I just replaced
on FOKM's amphibs), instead of the new 2 piece FL-219's they ship now, it
could be a full day job just to change one flat tire as you had to drop the
entire gear mechanism to get the axle off of the swing arms!

AS for getting ripped off, I really Doubt MAM intentionally did so. Probably
just an error ordering in the wheels from Cleveland and if I was you I would
contact Murphy and question why you didn't get the better CP bearings like
others have received. It can't hurt to ask for what you have paid for!

One other important thing for everyone with a float kit to check. On some of
the "early" kits MAM shipped 4 or 6 ply rated tires. These WILL NOT support
the aircraft properly. Make sure you received 8 ply rated 11 - 4 x 5.00
tires. Usually Cheng-Shin brand. They hold up very well if you keep the tire
pressure between 65 and 70 pounds. When you need replacements, they are
available at most Goodyear outlets for about $30 Cdn per tire and ALWAYS buy
a new tube to go with them!

One other suggestion to all of you, once you get your Rebel flying on
amphibs. If the aircraft is going to sit for any period of time in excess of
a couple weeks ( & especially for winter strorage), lift the aircraft and
put blocks under the step area to keep the tires off the ground. Retract the
gear slightly to take all the pressure out of the system. This way you tires
will be round when you go to use the airplane again and not D shaped and
full of sidewall cracks like the, almost new, set I had to throw away off of
FOKM.

Regards,
Wayne G. O'Shea
www.irishfield.on.ca

----- Original Message -----
From: "Drew and Jan" <drewjan@execulink.com>
To: "Murphy Rebel Builders List" <murphy-rebel@dcsol.com>
Sent: Thursday, November 23, 2000 7:37 PM
Subject: Re: Re: Amphib Wheel Bearings]

Well I'm feeling a little ripped off now I've got plain steel bearings
with
kit #82 that I received aug.18 I guess thats what you get when you buy
your
floats on sale. By the way my front wheel bearings are chinese 1628RS
which
I assume are plain steel as well. How well are nosewheel bearings standing
up? Wayne do you drill the front axles too?
Drew Dalgleish

At 12:53 PM 11/22/00 -0500, you wrote:
Hello ALL,

Just in case anyone is <actually> taking my suggestion to drill the main
axles (on the Amphib floats) for grease fittings, I though I had better
add
this BEFORE I received any C4 or "ticking" packages in the mail!

There is an aluminum spacer that goes under the axle nut and washer. This
spacer must be turned down from the 1 3/4" size that allows it to seal
off
the dust felt, to about 1 5/8" O.D. If you don't put this 1/16th"
clearance
between this spacer and the dust felt you will blow the felts, washers
and
retainer rings out of the wheels when you fill the wheel with grease! I
reminded myself of this small modification, this morning, the HARD WAY!

Easy to turn them down if you have access to a lathe and a 1" diameter
bolt
and nut to mount the spacers on. Chuck in the lathe and turn them down.

Tips on the initial wheel grease filling are to use a tongue depressor
(or
similar) and fill the wheel cavity around the perimeter with grease up to
the bearing cones. Then hand pack the taper bearings and install them on
the
brake side of the wheel. Dust felt washer, dust felt and another washer,
then the retainer ring. Install the axle and then the bearing, dust felts
etc on the nut side. Install the spacer, washer, axle nut and tighten by
hand while rotating the assembly. Then snug up the nut and cotter pin in
place. Then slowly pump grease through the nipple WHILE rotating the
assembly, until some grease starts to ozz out at the nut side. You will
find
that grease will continue to ozz out for awhile, even after you have
cleaned
it off once or twice. If it doesn't ozz after cleaning, then the wheel is
not full of grease and has air pockets in it. Give it a few more pumps of
grease and once again rotate it a few turns to help the grease ozz by the
retainer nut washer. It only takes about 2 grease cartridges to fully
fill
BOTH wheels, although I would buy a total of 6 so you have the same
grease
for that DEDICATED grease gun to cover you for a few years down the
"Lake"
(as you had better not be on the road!).

Yes, I obviously <FINALLY> got my Chrome Plated 08125-CP taper bearings
and
08231-CP cones on Monday after a FOUR and a HALF MONTH wait. Ordered them
July the 5th. Sure glad it wasn't a customers Rebel that had come in for
a
quick bearing change in the Summer, as we have now received just about 3
feet of snow since Friday (and it's still coming down) UGGGH! I don't
think
C-FOKM is going to get the new motor broken in this year, so now I have
to
figure out how to corrosion proof all that nice bare steel on it's
$20,000
ZERO'd engine!

Can anyone (Curt maybe) that is building a set of MAM amphibs right now
confirm what bearings they received with their kit, in the Clevland
wheels.
If they are Chrome plated, the bearing with have a CP after the 08125.
The
CP can be nice letters, done like like the part number, or just engraved
in
someones hand writting. If there is no CP, then you have steel bearings.
FWIW, the steel bearings are only about $10Cdn and available the same day
you walk into the bearing supply house. The Chrome Plated ones (my OEM
cost)
are $70 bearing and $30 cone. That's $200 per wheel for the bearings.
They
took 4 1/2 months to get this time, the last set I bought (3 years ago)
took
3 weeks to get. Thank god I ordered two sets this time, so I am ready
with
the next set when (if) they are needed!

It all depends what you time is worth guys and gals! Would you rather be
flying it, or lying under it changing steel wheel bearings twice a year?
My
2 cents! (or should I say $400)

Blue skies (hopefully soon!),
Wayne G. O'Shea
www.irishfield.on.ca



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Amphib Wheel Bearings & Tires

Posted: Fri Feb 17, 2012 8:34 pm
by Terry McClary
snip>
One other important thing for everyone with a float kit to check. On
some of the "early" kits MAM shipped 4 or 6 ply rated tires. These WILL
NOT support the aircraft properly
snip>

Wayne,

I checked after reading your message. MAM was still shipping 6 ply tires
as of Nov. of last year, not just the early kits.

Terry

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Amphib Wheel Bearings & Tires

Posted: Fri Feb 17, 2012 8:34 pm
by Wayne G. O'Shea
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Your following message has been delivered to the 170 members of
the list murphy-rebel@dcsol.com at 11:58:05 on 28 Nov 2000.
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Sorry to hear that Terry, but I believe it was Jack Weibe (could be wrong
but I know it was someone local) that had a HELL of a time with flat tires
running either a 4 ply or 6 ply Cheng-Shin tire MAM was sending them. He
switched to 8 plys and has been problem free every since. Howards came with
8 ply rated tires (kit from the 1995/6 era) and they still look like new
after 3 years of usage. The tires I threw away (only because they were
sidewall cracked and D-shaped from storing the A/C on the wheels) off a
factory built set of 1500's this year were a set of 8 plys and I replaced
them with a set of 8 plys I bought at the local Goodyear dealer. The
difference in price from the Cheng-shin 6 ply 11 - 4.00 x 5 tire, to the 8
ply, is only $1.55 U.S. (in ACS catalogue) so I doublt MAM is using it as a
cost savings feature. Probably just another ordering glitch from ordering
tires by size, without specifing ply rating. Then shipping out to builders
what ever they have received, without looking at them!

Regards,
Wayne G. O'Shea
www.irishfield.on.ca

----- Original Message -----
From: "Terry McClary" <tlmcclary@juno.com>
To: <murphy-rebel@dcsol.com>
Sent: Monday, November 27, 2000 10:28 PM
Subject: Re: Re: Amphib Wheel Bearings & Tires

snip>
One other important thing for everyone with a float kit to check. On
some of the "early" kits MAM shipped 4 or 6 ply rated tires. These WILL
NOT support the aircraft properly
snip>

Wayne,

I checked after reading your message. MAM was still shipping 6 ply tires
as of Nov. of last year, not just the early kits.

Terry

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Amphib Wheel Bearings & Tires

Posted: Fri Feb 17, 2012 8:34 pm
by Drew and Jan
Wayne I checked with MAM yesterday and they tell me plain steel is whats
shipped in the kits. In their opinion chrome plated is overkill and would
only be used in salt water. I think I'll talk to my freind that works at
Timken. Drew
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Amphib Wheel Bearings & Tires

Posted: Fri Feb 17, 2012 8:34 pm
by Wayne G. O'Shea
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Your following message has been delivered to the 170 members of
the list murphy-rebel@dcsol.com at 14:13:03 on 5 Dec 2000.
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Drew,

It's funny (well not really) they would say that, when many kits seem to be
shipped out with CP bearings installed in the wheels, yet others come with
steel. Maybe the folks at Cleveland are just installing what ever they have
in stock aye. (But, I really doubt that!!)

See if your friend can get you a deal to purchase them, at less than the
$100 a set (bearing/cone) I'm paying and waiting 5 months etc. Although I
don't see how MAM can deny to supply you, considering they have supplied
them to so many others!

Regards,
Wayne G. O'Shea
www.irishfield.on.ca



----- Original Message -----
From: "Drew and Jan" <drewjan@execulink.com>
To: "Murphy Rebel Builders List" <murphy-rebel@dcsol.com>
Sent: Tuesday, December 05, 2000 10:42 AM
Subject: Re: Re: Amphib Wheel Bearings & Tires

Wayne I checked with MAM yesterday and they tell me plain steel is whats
shipped in the kits. In their opinion chrome plated is overkill and would
only be used in salt water. I think I'll talk to my freind that works at
Timken. Drew
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