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Re: Re: Europa-List: Mono Inner Tyre Failures

Subject: Re: Re: Europa-List: Mono Inner Tyre Failures
From: Raimo Toivio <raimo.toivio@rwm.fi>
Date: Fri, 18 Sep 2009 12:24:04

I made a mistake w pressure units - sorry:

1 bar = 10 N/cm2 = (about) 1 kp/cm2 = 1 kg/cm2.

1 PSI = pound/inc2 = 0,454 kg/6,45 cm2 = 0,07 bar

1 bar = 14,3 PSI.

Raimo


----- Original Message ----- 
From: "Raimo Toivio" <raimo.toivio@rwm.fi>
Sent: Friday, September 18, 2009 11:56 AM
Subject: (SPAM) Re: Europa-List: Mono Inner Tyre Failures


Terve!

I cannot accept this! It should not be a part of our life we live (and fly) 
nowadays
!
Landing with empty tyre could hurt seriously in the worst case scenario.

There must be something to prevent this happening so often or even better - 
never!

I used also talcum powder and now the whole plane smells roses (I asked powder
with jet fuel smell but they have not!).

Whats  your tire pressure, Paul? I have used always 2,2 PSI = 2,4 kg/cm2 (thats
about double they recommend).

BTW it is easy to check: in my case 2,2 PSI equals 162 mm = 6,38" from the 
asphalt
surface to the lowest point of the main axle (port side). That is a poor mans
Mono Main Tyres Pressure Gauge.

Raimo OH-XRT

----- Original Message ----- 
From: "Paul McAllister" <paul.the.aviator@gmail.com>
Sent: Thursday, September 17, 2009 3:32 PM
Subject: Re: Europa-List: Mono Inner Tyre Failures


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 <raimo.toivio@rwm.fi> wrote:
> All
>
> I have lost without visible or known reason two innner tyres in my
> Monowheel.
>
> Loosing suddenly main gears air pressure is not a funny game and did not
> make my day actually.



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