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11-06-2009, 08:09 PM
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Join Date: Feb 2007
Location: Sutter Creek, CA
Posts: 842
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Hmmm!
Quote:
Originally Posted by Mel
Anyone remember the "close-able" wheel pants that Jim Bede designed many years ago? They had doors on each side that slid down to completely enclose the tires after take-off. Of course, you had to remember to open them for landing or be prepared for more fiberglass work.
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Mel! I like it...alot! It seems that one could design a simple "clamshell" type door that would open far enough to allow plenty of clearance during takeoff and landing, but would completely enclose the tire once airborne.
__________________
Mark Ohlau
RV-6 N506MM VAF #1410
2017 Donation Made
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11-07-2009, 09:43 AM
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Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,393
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Lopresti
Google Lopresti wheel pants and look at the avweb article. A bit pricey at $1995 projected price.
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11-07-2009, 11:58 AM
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Join Date: Jan 2006
Location: Green Bay, WI (GRB)
Posts: 479
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Bede wheel pants
This expired patent will explain the inner workings of the clam shell type wheel pant.
Bede mentions a 10% speed increase with his design, the way I read this is 10% over a aircraft equipped with no wheel pants.
https://patents.google.com/patent/US.../en?oq=3750986
__________________
Don Pansier
Green Bay, WI (GRB)
RV-7 N450DP
W9LYX
Antennas for Experimental Aircraft
www.deltapopaviation.com
Last edited by dpansier : 07-27-2020 at 08:16 PM.
Reason: Updated link
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11-08-2009, 11:44 AM
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Join Date: Feb 2008
Location: Largo, FL
Posts: 1,029
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Brakes get way too hot already
I am thinking about opening up or ventilating the main gear fairings --- my brakes get way too hot with the very gentle use and don't cool very well between TO/LDG.
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11-08-2009, 12:29 PM
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Join Date: Oct 2008
Location: Montreal
Posts: 12
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Quote:
Originally Posted by 10builder
Years ago an A&P friend of mine suggested I look for bristle brush material attached to a long flexible strip that could be formed around the inside opening of the fairing. His thought was that if trimmed to just "brush" the tire it would prevent air from burbing inside the fairing and potentially reduce drag.
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Allot of airliners use this. The Boeing 737 and Bombardier CRJ, both use strips of bristle material to seal the wheel well when the gear is retracted. I don't see why it couldn't be used on wheel pants if you can fit them in there....
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09-06-2018, 06:00 PM
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Join Date: Jun 2006
Location: Port Orange, FL (7FL6)
Posts: 274
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Quote:
Originally Posted by jrs14855
Google Lopresti wheel pants and look at the avweb article. A bit pricey at $1995 projected price.
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I?m curious, does any one know why these never made it to market? Was there a flaw in the design, or were the proposed speed gains just not there?
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Flying as of 1-12-2016!!!!!
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09-06-2018, 06:52 PM
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Join Date: May 2005
Posts: 377
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link doesn't work
Quote:
Originally Posted by dpansier
This expired patent will explain the inner workings of the clam shell type wheel pant.
Bede mentions a 10% speed increase with his design, the way I read this is 10% over a aircraft equipped with no wheel pants.
http://www.google.com/patents/about?...BAJ&dq=3750986
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I can't get this link to work.
__________________
Charlie "T.Bear" Guarino
Springtown, TX
RV-4 Flying again with a fresh overhaul
Exempt but paid
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09-06-2018, 07:12 PM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,219
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Quote:
Originally Posted by cguarino
I can't get this link to work.
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That link is from an 8 year old post.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
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07-26-2020, 08:23 PM
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Join Date: Jan 2006
Location: Green Bay, WI (GRB)
Posts: 479
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__________________
Don Pansier
Green Bay, WI (GRB)
RV-7 N450DP
W9LYX
Antennas for Experimental Aircraft
www.deltapopaviation.com
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07-26-2020, 10:00 PM
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Join Date: Jan 2005
Posts: 4,285
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How much gap are we talking. In the day before the two piece pants you had large gaps. Baffle material was common. Once we got the two piece you could make it tight. The down side is different tire profiles have broader tread shoulders or shapes and even diameters and widths.
Is it worth it? Yes if you want more speed. Is this one change going to make a measurable difference? No but every little change adds up to measurable gains, even if small. If you have less than an inch all around I'd leave it alone.
As far as air, yes brakes can get hot but only for multi touch and goes.
__________________
George
Raleigh, NC Area
RV-4, RV-7, ATP, CFII, MEI, 737/757/767
2020 Dues Paid
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