Important notice
Please remember that people from all over the world read and post on this forum, and that every country has its own rules, regulations and standards. This forum is based in the USA and so much of the information posted here is for the benefit of people who operate aircraft in the experimental/exhibition or experimental/racing categories. Advice given on this forum may be region specific. A person from Europe, for example, may make suggestions perfectly appropriate for a U.S reader, although not acceptable in his home country!

Please take this into account and carefully consult the authorities, standards and approved documentation where you fly.
Fournier Forums Upload picture | User Cp  |  Register  |  Members  |  Search  |  Help
    |- Fournier Aircraft > Modifications Post New Topic   Post A Reply
AUX tank for RF5B printer friendly version
next newest post | next oldest post
Author Messages
sericson
Staff Sergeant

Gender: Male
Location: Lancaster, CA
Registered: Feb 2007
Status: Offline
Posts: 40

Click here to see the profile for sericson Send email to sericson Send private message to sericson Find more posts by sericson Edit or delete this message Reply w/Quote
Posted Monday, August 15, 2016 @ 07:28 PM  

Looking for ideas or maybe current examples of a 5 to 7 gallon aux tank for my RF5B N99809. I have upgraded to the L2000 Limbach and correct Hoffmann prop (Together a great performance improvement). Collin was here the day we hung it! I'm still early in the flight testing (10 hrs) but typically see 100MPH true at 2300 RPM at 4 gph. Climb rate is about double the old POS L17000. Much smoother and oil temps rarely goes past 100 deg C on climb out at low pitch full throttle. Oil temp at cruise is 80 to 90 deg C in the hot (typically over 100 deg F) Mojave desert where I'm based in high pitch 2300-2400 RPM. Gives me about 2.5 hours endurance with zero reserves. 5.5 more gallons would be close to 3.4 hours with decent VFR reserves. 7.4 gallons would yield about 3.8 hours plus VFR reserves.

I'm eyeing the area between the passengers legs to place a small aux tank with a separate fill port and small electric transfer pump. Tank likely to be manufactured from water jet cut 6061 Aluminum and Tig welded. Might be interested in kitting a few but welding and installation would be up to the owner.

Anybody got pictures of something already flying? Somebody must have played with this.

Steve

--------------------
Steve Ericson
N2186 RF4D
N55SE RF-4D former F-BPLI Project
N99809 RF-5B

Barry Turner
Private

Gender: Male
Location: South AFRICA
Registered: Jan 2018
Status: Offline
Posts: 4

Click here to see the profile for Barry Turner Send email to Barry Turner Send private message to Barry Turner Find more posts by Barry Turner Edit or delete this message Reply w/Quote
Posted Friday, February 2, 2018 @ 10:15 AM  

Quote:
Originally posted by sericson

Looking for ideas or maybe current examples of a 5 to 7 gallon aux tank for my RF5B N99809. I have upgraded to the L2000 Limbach and correct Hoffmann prop (Together a great performance improvement). Collin was here the day we hung it! I'm still early in the flight testing (10 hrs) but typically see 100MPH true at 2300 RPM at 4 gph. Climb rate is about double the old POS L17000. Much smoother and oil temps rarely goes past 100 deg C on climb out at low pitch full throttle. Oil temp at cruise is 80 to 90 deg C in the hot (typically over 100 deg F) Mojave desert where I'm based in high pitch 2300-2400 RPM. Gives me about 2.5 hours endurance with zero reserves. 5.5 more gallons would be close to 3.4 hours with decent VFR reserves. 7.4 gallons would yield about 3.8 hours plus VFR reserves.

I'm eyeing the area between the passengers legs to place a small aux tank with a separate fill port and small electric transfer pump. Tank likely to be manufactured from water jet cut 6061 Aluminum and Tig welded. Might be interested in kitting a few but welding and installation would be up to the owner.

Anybody got pictures of something already flying? Somebody must have played with this.

Steve

Hi Steve sorry have no pictures but I had a 12 liter tank fitted under the rear instrument panel in my RF5B. I had an electric transfer pump in the wing feeding through a non return valve into the fuel tap where the pipe from the tank joined.The procedure was to run a certain time and switch on the transfer pump and watch the main tank re fill. It made it possible for me to run from Johannesburg to Durban without re fueling.That aircraft had a 2180cc engine with original carburetor and fixed prop.

sericson
Staff Sergeant

Gender: Male
Location: Lancaster, CA
Registered: Feb 2007
Status: Offline
Posts: 40

Click here to see the profile for sericson Send email to sericson Send private message to sericson Find more posts by sericson Edit or delete this message Reply w/Quote
Posted Monday, March 26, 2018 @ 01:10 AM  

Thinking along the same lines, I will post pictures as I continue.

Thanks for the responce Barry

--------------------
Steve Ericson
N2186 RF4D
N55SE RF-4D former F-BPLI Project
N99809 RF-5B

jccuevas
Private

Gender: Male
Location: Redmond, Washington - U.S.A."
Registered: Feb 2018
Status: Offline
Posts: 6

Click here to see the profile for jccuevas Send email to jccuevas Send private message to jccuevas Find more posts by jccuevas Edit or delete this message Reply w/Quote
Posted Sunday, April 1, 2018 @ 12:03 PM  

Steve and Barry:

How did you "tap" the transferred fuel into the main fuel tank? I would also like to install a temporary ferry tank in the back seat of my RF-5. I will ferrying my RF=5 from upstate N.Y to Snohomish, Washington and crossing Wyoming and Montana, fuel is not always available, a few extra gallons would give provide me options and safety. Suggestions, ideas and photos would be very helpful.

"J.C." Cuevas
N66GL
RF-5B
Redmond, WA

Bob Grimstead
Captain

Gender: Male
Location: Perth, Western Australia or West Sussex, England
Registered: Dec 2006
Status: Offline
Posts: 2027

Click here to see the profile for Bob Grimstead Visit http://www.redhawksduo.co.uk Send email to Bob Grimstead Send private message to Bob Grimstead Find more posts by Bob Grimstead Edit or delete this message Reply w/Quote
Posted Tuesday, April 3, 2018 @ 03:46 AM  

Hi again JC,

Small world indeed. I bought our Champ in 1988 from Steve Herrin, who then flew with Northwest and sold it planning to buy a Cessna 170. I don't suppose you know him? If so, please say 'Hi' and 'Thank you' and tell him we're still flying and loving it.

There's some info on my auxiliary tank installation here http://sbeaver.com/cgi-bin/fournier/cutecast.pl?session=PvoUsJecmQ7b0JvaDyWK9UoKbf&forum=11&thread=1019&page=2

I know the RF5 has wing tanks rather than the RF4D's forward fuselage tank, but you could probably rig up a similar bladder on the parcel shelf feeding into either one of the wing tanks or into the system somewhere via a union. The secret with the RF4 one is to get a longer banjo bolt made, then it all plumbs in neatly. I prefer gravity feed as mine is, because of the possibilities of pump failure and sparks with fuel.

Be sure to get a bladder tank that is resistant to all types of fuel, and not a water one, which will dissolve at the seams.

Good luck, Bob

--------------------
Flying and displaying Fournier RF4Ds VH-HDO and G-AWGN, building replica RF6B G-RFGB and custodian of RF6B prototype F-BPXV

sericson
Staff Sergeant

Gender: Male
Location: Lancaster, CA
Registered: Feb 2007
Status: Offline
Posts: 40

Click here to see the profile for sericson Send email to sericson Send private message to sericson Find more posts by sericson Edit or delete this message Reply w/Quote
Posted Thursday, April 19, 2018 @ 06:01 PM  

Hi JC, sorry about my slow to respond. My plan is to use the banjo fitting on the bottom of the fuselage tank. I'm going to use a double banjo bolt. I believe you have been talking with Collin and I'm very interested in what you guys come up with. My project is being held up by work demands.
I used a similar trick to add an electric pump at the engine after several mechanical fuel pump failures with a double banjo at the gasolator.

Steve
RF-5B N99809

--------------------
Steve Ericson
N2186 RF4D
N55SE RF-4D former F-BPLI Project
N99809 RF-5B

Collin
General

Gender: Male
Location: McMinnville. Oregon
Registered: Oct 2006
Status: Offline
Posts: 711

Click here to see the profile for Collin Visit http://www.cfiamerica.com Send email to Collin Send private message to Collin Find more posts by Collin Edit or delete this message Reply w/Quote
Posted Tuesday, May 22, 2018 @ 06:54 PM  

Hi,

This is JC's temporary 8 gallon aux tank. The electric pump is only needed to prime. Then engine driven pump is used. Just open aux fuel valve and close main fuel valve.


--------------------
Collin Gyenes

Post New Topic   Post A Reply Jump to:
Contact Us | cfiamerica.com | Privacy Policy All times are GMT -4 Hours.
Welcome to The Fournier Forum, Guest!  
Login
Username :
Password :
In order to fully utilize the abilities of this board, you are required to register as a member. Registration is free, and allows you to do lots of things including turning on or off certain features of this board. Register now!
Forum Rules & Description
Who Can Read The Forum? Any registered user or guest
Who Can Post New Topics? Any registered user
Who Can Post Replies? Any registered user
Who Can Edit Posts? Any original author
How can you improve on perfection?
Currently Active Users: 83
There are currently 0 members and 83 guests on the boards. | Most users ever online was 822 on 08-01-2020 10:15 PM
Search This Forum
Search Keywords: Search From:
Powered by CuteCast v2.0 BETA 2
Copyright © 2001-2003 ArtsCore Studios