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Re: Europa-List: Re: Tire /tyre landing incident /accident

Subject: Re: Europa-List: Re: Tire /tyre landing incident /accident
From: Raimo Toivio <raimo.toivio@rwm.fi>
Date: Mon, 18 Jul 2011 16:26:32
This has always been my habit (similar markings also to the oilfilter & 
base as well). Just do it simple by red permanent marker. I have never 
seen any movements between the rim and tire/tyre. So that is not the 
reason for once-a-year-flat-tyre-syndrom in my case.

Raimo OH-XRT Finland 

From: Karl Heindl 
Sent: Friday, July 15, 2011 8:21 PM
Subject: RE: Europa-List: Re: Tire /tyre landing incident /accident

I remember once listening to a presentation by a professional engineer 
and pilot at an EAA meeting. 
He pointed out that it is very important to make a permanent mark on the 
rim(s) and on the tire after tube installation. And this should be 
checked as part of every preflight inspection. Apparently this slippage 
is quite common, regardless of aircraft type, when landing on hard 
runways.

Karl


> Subject: Europa-List: Re: Tire /tyre landing incident /accident
> From: butcher43@att.net
> Date: Fri, 15 Jul 2011 07:33:58 -0700
> To: europa-list@matronics.com
> 
> 
> We joined the flat tire mono club this past Tuesday, only we think 
ours had a different cause, not rubbing of the tube in the tire.
> 
> We have been doing a lot of training on a hard surface runway. The 
tire and tube had in excess of 500 landings on it. We thought before 
Heather flew on Tuesday that the tire looked a little low and thought 
the same before Jim flew after Heather (she did 7 T/O and ldgs). On 
Jim's 7th landing, the plane slowed quickly and there was a smell of 
rubber. 
> 
> When we took the wheel/tire apart we found that the tube was perfect 
except the valve stem was pulled off. No holes or rub marks on the tube. 
Tire was damaged with a couple of broken cords and a cut on the outside 
---From the wheel.
> 
> Our conclusion is that the tire was low (we normally run 18 psi) and 
over the course of 14 T/O and ldgs with some swerving on the runway, the 
tire pulled from the bead of the wheel and rotated causing the valve 
stem to be pulled off.
> 
> The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply 
rating and the tube was a Cheng Sing (we think we got the tube from 
Europa UK). 
> 
> We were able to get a Goodyear Flight Custom II tire locally and 
fitted our spare tube that is Chinese and purchased from Wicks Aircraft 
supply, Part Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not 
listed on Dresser Tire or ACS websites). The only marking on the tube is 
"Quality Assured" and some Chinese characters! The new tire seems to 
have a flatter tread and doesn't bulge as much. Landings yesterday with 
it on pavement were no different than previously. 
> 
> We always use a lot of talcum when fitting a tube. We inflate a new 
tube outside the tire first to get out wrinkles. Then we deflate it, 
talcum it (talcum the tire too), insert into the tire and inflate. Then 
deflate again, and fit the wheel (usually twice since we forget the 
spacer!!). Inflate again and deflate again. Finally inflate the final 
time to 18 psi. Be sure the valve stem is aligned with the red dot on 
the tire for balance.
> 
> When we got our Europa wheel, we found the opening for the valve stem 
was quite rough. We filed and sanded it to make it as large and smooth 
as possible. We used Scotchbrite to clean the wheel before fitting the 
new tire and tube. There was a lot of rubber debris on the bead and even 
inside the wheel.
> 
> Jim & Heather
> 
> 
> 
> 
> Read this topic online here:
> 
> http://forums.matronics.com/viewtopic.php?p=346502#346502
> 
> 
> 
> 
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> 
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