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07-15-2014, 10:15 AM
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Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 669
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Tire weight
Just replaced the bald Aero Classic tires on the mains of my 6a with Monster Retreads hoping to get more life out of them. I've heard the retreads were heavier so I weighed the tires and rims before and after. The retreads are 7 lbs heavier. That's a pretty good hit to the useful load.
Nancy and I are preparing to make a trip from Baton Rouge to Idaho and will probably go sans main wheel pants since they also weigh about 7 pounds and I don't mind trading a little speed for baggage. Anyone else out there flying around without their pants on?
Last edited by jpowell13 : 07-15-2014 at 10:16 AM.
Reason: Misspelling
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07-15-2014, 10:35 AM
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Join Date: Jun 2012
Location: Frederick, MD
Posts: 819
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flying without pants
Occasionally, I do but I find that the seat belts can chafe a bit and other things get in the way of the stick. 
Oh, I just realized you mean wheel pants. No, never.
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Dan Morris
Frederick, MD
PA28-140
Hph 304CZ
RV6 built and sold
N199EC RV6A flying
Learn the facts. "Democracy dies in darkness"
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07-15-2014, 10:55 AM
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Join Date: Aug 2010
Location: Wichita, KS
Posts: 1,957
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The pics I've seen of Vlad's plane on his most recent trip show his plane "pants-less".
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Kurt W.
RV9A
FLYING!!!
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07-15-2014, 11:58 AM
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Join Date: Oct 2008
Location: Lake Country, B.C. Canada
Posts: 2,416
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fuel for thought
...now this is NOT an endorsement to fly over gross......
however, the next thing I thought was......
weight drops by 7 lbs every 10 minutes of flight.
drag is there for the whole trip! ( without pants)
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Perry Y.
RV-9a - SOLD!....
Lake Country, BC
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07-15-2014, 01:06 PM
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Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 669
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Dan, gotta save that weight where you can. Levis must weigh 3 pounds. And, much cooler without them!
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07-15-2014, 01:06 PM
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Join Date: Nov 2009
Location: Independence, OR
Posts: 316
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If you are going to back country strips you might want to go sans pants.
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John Horn (donated for 2020)
Independence, OR
LSRM-A, CFII
Rotax Service, Maintenance, and Heavy Maintenance Trained
Building an RV-12, N7878H reserved
Flying a Flight Design CTSW
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07-15-2014, 01:22 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,247
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You'l give away about 10 knots going without wheel pants -not important if you're only goign a short distance- but Baton Rouge to Idaho? That's a lot of hours! the other thing to consider is that coling goes up witht he square of speed (or something like that), and in the summer, out west, giving up cooling is a prolem for a closely cowled airplane.
Far better to keep the pants on (the wheel pants that is - we don't care what you do in the privacy of your own cockpit...) for the long trip, and fidn someplace to store them when you get out west before goign into the back country. They don't take long to remove, and there are lots of RV'ers around with storage space in their hangars.
Paul
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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07-15-2014, 02:01 PM
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Join Date: Jun 2006
Location: San Jose, CA
Posts: 1,125
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Was the before weight the weight of a worn tire or a new tire? I would bet that the difference between a new and worn tire weight is significant.
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Kelly Johnson
San Jose, CA
RV-9A
Pink slip issued: 5/7/12
First flight: 5/28/12, Memorial Day.
Phase I Complete: 8/18/12!
2020 donation: complete
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07-15-2014, 02:17 PM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,641
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I am sure you could find some RV people in Idaho that have tools and space to help your wheel pants while you hit the back strips. If you are in the Caldwell area, I will help you out.
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rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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07-15-2014, 02:27 PM
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Join Date: Jul 2007
Location: Warwickshire UK
Posts: 703
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According to the specs, the Desser Monster retread weighs about 7 lb against 5 lb for a typical Goodyear 5.00*5.
On that basis you are only accepting a 4 lb weight penalty.
But a 5+% speed/range penalty is equivalent to about 2 gallons of Avgas. So filling up with 2 gallons less will save you more weight and give you the same range as removing the wheel fairings.
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