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10-11-2011, 06:58 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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I have a mate in Melbourne who has done the same thing, even had an engineer do the checks on the structure.
Problem is you need slow build wings.
In my case with QB wings it was easier to go for smaller tip tanks, we foamed them into the tip.
52 usable litres seems to be a good extra range boost. An extra 200L is really a lot of extra fuel and not often justified or used.......except in some very long range missions 
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10-12-2011, 08:54 AM
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Join Date: Jan 2010
Location: Denver, CO
Posts: 1,967
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Quote:
Originally Posted by Paul Walter
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One step ahead of you Paul. I sent him a message already. I may not plan to fly across the poles, but I would like the ability make the CA to Hawaii leap in my 10, with my wife along for the ride. I figure I'll need 350 pounds of "full fuel useful load," which is a lot of weight when all that extra fuel is included! Think it's doable in the 10?
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10-13-2011, 07:10 AM
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Join Date: Feb 2006
Location: Peachtree City, Georgia
Posts: 440
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Quote:
Originally Posted by ppilotmike
One step ahead of you Paul. I sent him a message already. I may not plan to fly across the poles, but I would like the ability make the CA to Hawaii leap in my 10, with my wife along for the ride. I figure I'll need 350 pounds of "full fuel useful load," which is a lot of weight when all that extra fuel is included! Think it's doable in the 10?
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A quick look at a calculator shows a fuel cost of $1200, one way. Not to mention single engine over 2390 miles of empty ocean. It would take a minimum of 16 hours, which means flying at night, as well.
It's cheaper to fly Hawaiian Airlines - and they have a toilet.
John
__________________
John Goodman - 40572
First flight was 25 June, 2011
N711JG
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10-13-2011, 09:44 AM
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Join Date: Jan 2010
Location: Denver, CO
Posts: 1,967
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Quote:
Originally Posted by johngoodman
A quick look at a calculator shows a fuel cost of $1200, one way. Not to mention single engine over 2390 miles of empty ocean. It would take a minimum of 16 hours, which means flying at night, as well.
It's cheaper to fly Hawaiian Airlines - and they have a toilet.
John
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John,
For long trips, it's always less hassle and cost to travel in "the tube." My wife and I used to live in Hawaii. In fact, that's where I learned to fly. We've been back several times since moving to the mainland. I want to fly us there as part of a "round the world trip", not on a "let's go to Hawaii for a week" type of trip. I know it's quite a challenge, but that's the exciting part about it. For me, the "in-flight movie" is outside the windows. 
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10-13-2011, 12:56 PM
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Join Date: Jan 2005
Location: Clarion, Pennsylvania
Posts: 550
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Quote:
Originally Posted by Paul Walter
The RV 10 that Jon Johanson assisted with was for a company that did mapping or survailance of some type over Antarctica - it had the most amazing cockpit and electrical system you would ever see.
Jon did the test flying
Also it had a huge belly pod much bigger than i have see else where.
I'm not sure what Vans would say about the extra 100 litre custom tank plus tip tanks in each wing but If my memory serves me correctly this is what it had. Over 10 hours endurance !!!
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I'm sure a number of us would enjoy hearing more about this machine, as well as the work it is doing. Sounds very interesting.
__________________
-Andy Turner
RV-10 N784JC
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10-13-2011, 03:46 PM
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Join Date: Jun 2010
Location: Horsham, Victoria, Australia
Posts: 83
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I hav'nt seen or heard much of Jon Johanson lateley but he'll be arround. Hopefully he will shed some light.
He landed this plane at oiur local airport when it had 60 or 70 hours on it.
As my other Australian on the list rightly pointed out, his mate had out board tanks fabricated and had the wing engineered - this would be all you would need. Who knows Vans may make it an option ?. Jon also had what you guys call Hotel Whiskey tanks in the tips as well.
If you are going to fly to Hawai then talk to Jon.
__________________
Rv 7A
Rv 6
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10-13-2011, 04:06 PM
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Join Date: Jan 2010
Location: Denver, CO
Posts: 1,967
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Quote:
Originally Posted by Paul Walter
If you are going to fly to Hawai then talk to Jon.
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Thanks Paul. I did get a reply from Jon and will continue to talk with him about the tanks. It's great to get insight from those who have gone before, so to speak.
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10-14-2011, 04:32 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Placard the airplane!
When/if you add wingtips and/or leading edge tanks, be absolutely sure to placard the airplane: "No spins, intentional or otherwise, with fuel in any extra tank!" Years down the road, someone else will own the airplane.
The -10 has been spin tested but with fuel outboard, in a spin, it may well be unrecoverable because of the high polar moment of inertia.
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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10-18-2011, 12:15 PM
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Join Date: Oct 2007
Location: Belvidere, IL
Posts: 169
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Design Guidance
Although he RV-10 is experimental, it's helpful to refer to FAR Part 23 for appropriate design guidance. Check out the following sections:
? 23.561 ? 23.843 ? 23.1337
? 23.571 ? 23.853 ? 23.1351
? 23.601 ? 23.863 ? 23.1357
? 23.603 ? 23.867 ?? 23.1501
through 23.1529
? 23.609 ? 23.901 ? 23.1541
? 23.613 ? 23.903 ? 23.1543
? 23.615 ?? 23.951 ? 23.1553
through 23.1001 ? 23.1555
? 23.619 ? 23.1011 ? 23.1557
? 23.625 ? 23.1183 ?? 23.1581
? 23.777 ? 23.1189 through 23.1589
? 23.787 ? 23.1305
Also, Advisory Circular 23-10 "AUXILIARY FUEL SYSTEMS FOR RECIPROCATING AND TURBINE POWERED PART 23 AIRPLANES" is very useful.
One important consideration... aux fuel systems for certified airplanes are required to have a redundant barrier to catch fuel spills. Consider putting some type of fuel bladder into an aluminum tank. That way, a cracked weld won't spill fuel onto live wires and ignite!
Another consideration... make sure your plumbing doesn't result in low line pressures and risk vapor lock. In any event, I'd recommend using the stock tanks for takeoff and landing.
A while back, we did some preliminary design for a 35 gallon fuel bladder in one of our RV-10 belly pods. The design called for a durable fuel cell with articulated foam for crash safety. An additional bulkhead was used to create a dedicated fuel compartment that is properly ventilated, free from ignition sources and equipped with drain holes. The fuel didn't take up very much room in the pod, leaving room for bicycles, skis and other lightweight items.
Good luck.
__________________
David Shelton, Aerospace Engineer and Soaring Nut.
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10-19-2011, 06:35 AM
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Join Date: Dec 2010
Location: Broken Arrow, OK
Posts: 14
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John Nys has built many -10s, and completed some of them with an extra stock Van's tank in each wing, outboard of the standard one, and has the engineering data to support his modification. I have seen several of the installations and they seem to be very well done. I don't know if he's on this forum but if anyone needs his contact info, give me a call.
Roger Pierce
RV-10 #40148
(Fuselage 1/3 completed)
Broken Arrow, OK
918-810-0603
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