Today's Message Index:
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1. 07:06 AM - Re: nose tire pressure (Kelly McMullen)
2. 09:55 AM - Re: nose tire pressure (Bob Turner)
3. 12:23 PM - Re: nose tire pressure ()
4. 12:52 PM - Re: nose tire pressure (P Reid)
5. 01:33 PM - Re: Re: nose tire pressure (Linn Walters)
Message 1
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| Subject: | Re: nose tire pressure |
IIRC the plans call for ~42psi. I try to keep mine above 50. Our recent
temperature drops will easily cause a 10% drop in pressure with out any
other factors. I sort of recall some trying both high and low pressure to
deal with shimmy issues.
Kelly
-sent from the I-droid implanted in my forearm
On Tue, Oct 4, 2016 at 10:42 PM, David <dlm34077@cox.net> wrote:
> A question and an observation.
>
>
> What pressure are we using in the nose tire?
>
>
> At 1100 TT on the aircraft, this morning I had my first maintenance issue
> away from home base. After landing and breakfast the nose tire was flat.
> Upon removal it looked as though the tube had been pinched in between the
> wheel halves. One bolt of the three was loose. I am trying to determine
> whether it was pinched several years ago when changed or perhaps loosened
> through use and perhaps slightly opened and pinched after a nose wheel si
de
> load. Any thoughts? After retrieving tools and spare tube from the baggag
e
> area and the use of a friendly FBO=99s hangar, two hours later we w
ere
> underway again.
>
>
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Message 2
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| Subject: | Re: nose tire pressure |
I'm more concerned about the loose bolt than the tube. If the bolts fail the rims
can come apart with a lot of force. I'd check the bolt carefully before re-installing.
Make sure the lock nut cannot be turned by hand.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=460969#460969
Message 3
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| Subject: | Re: nose tire pressure |
Hey Kelly,
Glad to hear that you run at 50. A side note: I=99ve redone too
many nose pants because the tire pressure gets low, there is not enough
clearance at the back of the tire opening and the tire doesn=99t
recover fast enough on landing so that it grabs the edge of the
fiberglass and rips the tail off the tail section in front of the brace
baffle. Am I the only one seeing this? Haven=99t seen it
mentioned.
Later, =93 Lew
From: Kelly McMullen
Sent: Wednesday, October 05, 2016 10:02 AM
Subject: Re: RV10-List: nose tire pressure
IIRC the plans call for ~42psi. I try to keep mine above 50. Our recent
temperature drops will easily cause a 10% drop in pressure with out any
other factors. I sort of recall some trying both high and low pressure
to deal with shimmy issues.
Kelly
Message 4
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| Subject: | nose tire pressure |
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Message 5
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| Subject: | Re: nose tire pressure |
Davids problem started out with the pinched tube due to poor assembly
techniques. He's not alone so this isn't chastisement. I'm betting that
90% of the airplane owners out there that do their own tire maintenance
were never taught how. I mean, how difficult can it be??? The bolt
issue may have happened at the same time or occurred later. We'll never
know.
Back to my aviation mentor. Everyone should have one. He taught me how
to change tires/tubes and how to prevent most problems.
1) Use plenty of talc .... everywhere except the bearings. ;-) Talc the
tube, inside of tire, and the parts of the wheel that will contact tube
and tire. Heavily talcing the wheel rim where the tire bead sits will
be important when you take the tire off next time. Don't forget the
valve stem. Lightly blow out excess talc from the inside of tire. If
there's a lot of excess talc it will end up in one place and can affect
tire balance.
2) Take the valve core out of the valve stem.
3) Place the tube inside the tire and align valve stem with the dot on
the tire.
4) Using your air gun inflate/deflate the tube a couple of times to
remove any folds that may be there. This is important.
5) Put the valve core back in and inflate the tube a little .... so the
wheel halves need a little push to get seated. You will not pinch the
tube between the wheel halves if the tube has sufficient air in it.
6) Bolt the wheel halves together and torque to manufacturers
recommendation. They do vary.
7) Remove the valve core and use the blow gun to inflate/deflate a
couple of times to make sure no folds exist. Call it insurance.
8) Put the tire back on the plane and air up until the outside tread
just lifts off the ground. Note the tire pressure if it makes you feel
good.
9) Go fly!!!! :-)
Now for some comments. YMMV.
When I change tires I always clean and regrease the bearings. If the
grease dries out between tire changes you aren't flying enough. I do not
change tubes every time I replace the tire. When they're out of the
tire I over-inflate and look for checking in the tube. If there's any
checking at all it's time to replace the tube. Pay particular attention
to the tube where the valve stem is. I've never had a flat in over 40
years of flying.
Linn .... still passionate about aviation after all those years
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