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05-01-2014, 07:52 PM
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Join Date: Jan 2013
Location: Senoia
Posts: 16
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Extended Range Tanks...Done!
All--Just finished the install (15hrs) of "Smoke System Helper's" behind the seat tanks. Marvin builds a great product. The install wasn't plug-n-play, but wasn't too bad. 2 7.5gal tanks behind the seats in my RV7 with the "Almost an RV14" seat recline mod gives me 57gals of fuel (55 usable) or more than 5.5hrs. I'm very pleased with the result. I'd welcome your comments.
--Jud
__________________
Jud Brandt
Big T Airport, (64GA)
Senoia, GA
RV7, Lyc 200hp, Tip-up, steam gauges (SOLD)
RV7, Lyc 180hp, BA CS, Garmin G3X Touch (SOLD)
ATP, A&P/IA
EAA Lifetime
EAA Flight Advisor
EAA Technical Counselor
Email: jcbrandt@me.com,
Cell: 404-593-1966
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05-01-2014, 07:53 PM
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Join Date: Jan 2013
Location: Senoia
Posts: 16
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Try this link for pictures.
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Jud Brandt
Big T Airport, (64GA)
Senoia, GA
RV7, Lyc 200hp, Tip-up, steam gauges (SOLD)
RV7, Lyc 180hp, BA CS, Garmin G3X Touch (SOLD)
ATP, A&P/IA
EAA Lifetime
EAA Flight Advisor
EAA Technical Counselor
Email: jcbrandt@me.com,
Cell: 404-593-1966
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05-01-2014, 08:45 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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I find them interesting... what was the investment?
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Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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05-02-2014, 04:59 AM
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Join Date: Feb 2006
Location: Valley Forge, Pa
Posts: 636
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Weight
I guessing here, 90lbs of extra fuel behind the spar,+tanks/pumps in a Seven with 180/CS prop with full leather interior.I got to ask how did the W&B come out?
RHill
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05-03-2014, 11:19 AM
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Join Date: Jan 2013
Location: Senoia
Posts: 16
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Cost and CG Impact
The investment was about 1 "AMU" (Aviation Monetary Unit = $1,000USD). It took about 15hrs of semi-competent installation.
I'm very pleased with the CG impact. As it's very far forward in the rear baggage area at STA 110", the weight is well-carried. I'm happy with the trade-off of 8.6lbs of empty tanks and fittings for local or shorter flights for the option of tankering cheap gas or extending legs for Wx, etc. Even with the "Almost an RV14" seat recline mod installed, it only took 4" of depth out of the baggage area. The beagle can just curl-up smaller.
Jud
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Jud Brandt
Big T Airport, (64GA)
Senoia, GA
RV7, Lyc 200hp, Tip-up, steam gauges (SOLD)
RV7, Lyc 180hp, BA CS, Garmin G3X Touch (SOLD)
ATP, A&P/IA
EAA Lifetime
EAA Flight Advisor
EAA Technical Counselor
Email: jcbrandt@me.com,
Cell: 404-593-1966
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05-03-2014, 11:31 AM
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Join Date: Sep 2009
Location: Rochester, MN
Posts: 710
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Jud
Thanks for the report and I hope you will keep us updated as you put hours on this system. I have been following this extended range option for some time and personally would prefer it over a wing tip option. I am curious why the system is two separate tanks rather than one continuous 15 gal tank?
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05-03-2014, 03:26 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,122
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Quote:
Originally Posted by diamond
Jud
Thanks for the report and I hope you will keep us updated as you put hours on this system. I have been following this extended range option for some time and personally would prefer it over a wing tip option. I am curious why the system is two separate tanks rather than one continuous 15 gal tank?
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Flap drive mechanism is in the way in the center so you can't carry through all the way across.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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05-19-2014, 05:04 AM
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Join Date: Mar 2005
Posts: 60
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As a matter of interest, how did you connect the tanks into the existing fuel system?
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