Thanks for that info. Jim.I have had about 4 failed tubes in two tyres
since Sept 2000. I had thought it was just me being =93Johna=94 ! until
I
rumbled the alternative size for the 4" nose wheel tube size which I
have
resorted to now is a KINGS TIRE 11x4.00-5 Which for some reason is of
smaller cross section balloon size than the original KINGS TIRE
4.10/3.50-5
Both have the 90deg bent metal valve. And were supplied by WATTS
Aviation
Tyres.
www.wattsaviation.co.uk/
However I spoke to John Bell at Watts tyres today and he says that the
selection of tubes is a black art due to manufacturers trying to cater
for
wide tyre sizes.
Ultimately it is down to the person doing the fitting to identify if the
tube is over size. In this effect it is infinitely better to have a
slightly
undersize tube which will expand to fit the tyre instead of oversize and
no
where for the slack to go. Thank God we are not talking certified
aircraft.!
Regards
Bob Harrison G-PTAG
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Jim Brown
Sent: 21 September 2009 20:42
Subject: RE: Europa-List: Mono Inner Tyre Failures
Bob;
We had the same problem on our RV-7A that our son flys.It went flat
after he
had landed...
No damage, but we also went to different size on the nose gear tube....
JimBrown
--- On Sun, 9/20/09, Robert C Harrison <ptag.dev@tiscali.co.uk> wrote:
From: Robert C Harrison <ptag.dev@tiscali.co.uk>
Subject: RE: Europa-List: Mono Inner Tyre Failures
Date: Sunday, September 20, 2009, 9:43 PM
Hi! Jim
I have had the problem with failure of the nose wheel inner tubes at
their
seams. Especially before I researched slightly different size tubes. The
originals were too large a diameter on the =93balloon=94 dimension and
so always
inflated with a crease in them.
Regards
Bob Harrison G-PTAG
_____
From: owner-europa-list-server@matronics.com [mailto:
owner-europa-list-server@matronics.com ] On Behalf Of Jim Brown
Sent: 20 September 2009 13:11
Subject: Re: Europa -List: Mono Inner Tyre Failures
Paul
I have been following this thread on flats, and I have a few points to
make,
that have worked for me.
I have been flying my monowheel almost ten years off paved runway's...My
kit
included the old "tundra tire" and instructions to use low pressure,(I
don't
remember PSI, but the sidewalls rubbed the Landing gear frame.) The
plane
taxied like it was runing in mud..
I changed that tire at about 20 hours to a 700 X 6 and 6 plys and used
30
PSI. The plane is much easier to taxi, take off's are much quicker, and
in
800 hours I have replaced two tires that were worn out. No flats !!!! I
can't say that the air pressure is the problem, and also I don't fly off
grass, but I have not had the problems that so many of you are having.
On another note having made the above change I also changed the
outrigger
lengths, as the new tire, with higher pressure made the original
outriggers
to short. Over the past ten years I have extened the outriggers in
length,
to now when the plane is parked, both outriggers touch the ground. For
me
ground handling is much better, and in landing with the longer
outriggers
the "rocking from one outrigger to the other" is now gone.
Also another question ? Are the flats limited to the Monowheels ??? Are
are
the tri gears having this problem?
Jim Brown
XS Monowheel.
--- On Thu, 9/17/09, Paul McAllister < paul.the.aviator@gmail.com >
wrote:
From: Paul McAllister < paul.the.aviator@gmail.com >
Subject: Re: Europa -List: Mono Inner Tyre Failures
Date: Thursday, September 17, 2009, 12:32 PM
--> Europa -List message posted by: Paul McAllister <
<http://us.mc450.mail.yahoo.com/mc/compose?to=paul.the.aviator@gmail.co
m>
paul.the.aviator@gmail.com>
Hi,
I have this happen regularly. I now just change them every 100 hours
and I never travel without my jacking block and a spare inner tube. I
have tried inner tube talcum powder and different pressures with out
much improvement.
The failure mode seems to be chafing on the side wall due to running
such low pressure.
Paul
On Thu, Sep 17, 2009 at 5:02 AM, Raimo Toivio <
<http://us.mc450.mail.yahoo.com/mc/compose?to=raimo.toivio@rwm.fi>
raimo.toivio@rwm.fi> wrote:
> All
>
> I have lost without visible or known reason two innner tyres in my
> Monowheel.
>
> Loosing suddenly main gear=B4s air pressure is not a funny game and
did not
>om/Navigator? Europa -List"
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