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03-02-2013, 09:23 PM
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Join Date: Jul 2005
Location: Midland, Michigan 3BS Hanger 4B and sometimes at home
Posts: 159
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Watched it happen! 6x6 inflated, removed from axle, bang! Nasty broken arm. He was lucky.
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Patrick Howe
Citabria 7KCAB - sold
RV8A FB - flying
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03-02-2013, 09:26 PM
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Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
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I think one just came off and the wheel halves cocked and blew the other two off. Like I said, I was only on a couple threads and it might have been 3 PSI or something. Just a shot of air to swell the tube. Sure surprised me. Point is, when removing a wheel, you really don't know what's holding the wheel halves together until you've got it apart. Going the other way, when you've just assembled a wheel is a bit different because you've just looked at the bolts and wheel halves etc. It should still be in a cage to inflate but nobody does that except airline shops (unions). The rest of us just trust our eyes on assembly.
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Actual repeat offender.
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03-03-2013, 05:26 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Aww.
Quote:
Originally Posted by aerhed
. Pierre has been riding with Lady Luck drivin' his Ol' 55. .
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So,do you guys mount a new tire and tube assembly on the axle deflated, not knowing whether or not you've pinched the tube? C'mon guys, I've also seen a newby wannabe A&P start removing wheel bolts without deflating it first...yeah, it burst. Some people are very intent on removing themselves from the gene pool.
In the Ag business, Lady Luck has no place...it needs to be calculated. Same thing goes for mounting/dismounting tires and tubes. I have many A&P friends and have never heard of deflating our tires before removing them...so do whatever floats your boat. All ten of my big 10" ag airplane tires gets torqued to 150 inch-pounds before I air it up.
I didn't get to be 68 because I'm stupid, doncha think?
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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03-03-2013, 07:28 AM
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Join Date: Jan 2005
Location: Kansas
Posts: 384
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Pierre, my initial reply was about safety and not intelligence. After reading the replies in this thread I recognize that my post is from habit of working on high pressure wheel/tire assemblies and probably not as applicable to our smaller tires. I do partially inflate my tires after working on them before putting them back on the axle. Once installed I fully inflate them.
Curtis
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03-03-2013, 09:16 AM
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Join Date: Nov 2005
Location: KRTS
Posts: 1,798
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So I went back to the hangar yesterday, looked at the parts for about 12 seconds, and then put everything together.

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Next?, TBD
IAR-823, SOLD
RV-8, SOLD
RV-7, SOLD
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03-03-2013, 09:25 AM
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Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
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Quote:
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I have many A&P friends and have never heard of deflating our tires before removing them...so do whatever floats your boat.
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Most of my best friends ARE A&P's. Didn't mean to dig at ya Pierre, but I think I went to a pretty good school for six years. My profs were pretty adamant about deflating before wheel removal. Since then I've been in the field for almost thirty years. When I got maintenance training for American we hit wheels and brakes pretty good. Rule one for wheel removal was deflate first unless it went in a caged dolly first. Same thing for Delta and the other four airlines I got maintenance training on. My boat floats okay and if I ruffle a few feathers while I'm paddling I apologize. But...when I hear a waterfall you can bet that I'm paddling the other way. I also don't have a problem admitting that I sometimes still do things wrong. When I hear a new tip I usually try to think it over before I dig in my spurs. Sometimes my neck hair comes up and I think "I've been doing that?" Sometimes I get muley and then years later it hits me...like a bolt out of the blue.
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Actual repeat offender.
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03-03-2013, 09:51 AM
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Join Date: Dec 2006
Location: Oakland CA
Posts: 771
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Quote:
Originally Posted by Sig600
So I went back to the hangar yesterday, looked at the parts for about 12 seconds, and then put everything together.

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LOVE THE GIF  Man have I been there more than once!
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All Best
Jeremy Constant
RV7A "Stella Luna" ECI IO-360 WW200RV Pmags 360hrs
VAF 2019 paid plus some for those who can't
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03-03-2013, 11:41 AM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Quote:
Originally Posted by aerhed
Most of my best friends ARE A&P's. Didn't mean to dig at ya Pierre, but I think I went to a pretty good school for six years. My profs were pretty adamant about deflating before wheel removal. Since then I've been in the field for almost thirty years. When I got maintenance training for American we hit wheels and brakes pretty good. Rule one for wheel removal was deflate first unless it went in a caged dolly first. Same thing for Delta and the other four airlines I got maintenance training on. My boat floats okay and if I ruffle a few feathers while I'm paddling I apologize. But...when I hear a waterfall you can bet that I'm paddling the other way. I also don't have a problem admitting that I sometimes still do things wrong. When I hear a new tip I usually try to think it over before I dig in my spurs. Sometimes my neck hair comes up and I think "I've been doing that?" Sometimes I get muley and then years later it hits me...like a bolt out of the blue.
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You are talking about 150 to 200 psi...... in a wheel / tire assy that is how big??
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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03-03-2013, 11:48 AM
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Join Date: Feb 2006
Location: Trenton, SC
Posts: 117
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Quote:
Originally Posted by Don at Airflow
?? 6? diameter wheel with 1 PSI pressure equals 28 lbs of force. Strips the threads on a ?-28 AN bolt?????? Seems odd to me. But hey I wasn?t there.
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Is it not 1 PSI X SQ Inches of tube?.....Thats going to be a lot more than 28 PSI. 
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03-03-2013, 12:04 PM
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Join Date: Jun 2006
Posts: 316
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I may be wrong here but I assumed that a 6.00 X 6 wheel is 6? in diameter. 1 PSI on a 6? diameter makes 28 lbs of force on that disk. I think I did the math right??? So the wheel halves would be being pushed apart with a 28 lb force. Or each ?? bolt (4 bolts on the wheel?) would have 7 lbs of tension on them.
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