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tdbjork(at)gmail.com
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 Posted: Sun Aug 11, 2013 7:24 am Post subject: Fuel Systems |
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I have been reading the discussion about fuel tank systems. I fly the Firestar 11, and found the same problems with the top fuel draw system. The aircraft fly's with the tail high, so the tanks are not level in flight the rear tank will run dry before the front one will, and as soon as the the rear tank runs dry and starts to suck air the engine will stop due to fuel starvation. So I decided to go to the bottom delivery system. I personally did not like the rubber push-in tank grommet in the bottom of the tank, I must say I have never heard of this system failing, but I did find this "Tank Access Bulkhead" in CPS cat. p/n 8561for $12.95 and the "Threaded Hose Barb" p/n 8521 for $1.59, for me to have piece-of-mind that is was screwed together and it made it easy to add a gascolator too.
Fly safe.. Tim
[quote][b]
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pcarillonsr(at)neo.rr.com
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| Posted: Sun Aug 11, 2013 10:20 am Post subject: Fuel Systems |
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On 8/11/2013 11:23 AM, Tim Bjork wrote:
| Quote: | I have been reading the discussion about fuel tank systems. I fly the Firestar 11, and found the same problems with the top fuel draw system. The aircraft fly's with the tail high, so the tanks are not level in flight the rear tank will run dry before the front one will, and as soon as the the rear tank runs dry and starts to suck air the engine will stop due to fuel starvation. So I decided to go to the bottom delivery system. I personally did not like the rubber push-in tank grommet in the bottom of the tank, I must say I have never heard of this system failing, but I did find this "Tank Access Bulkhead" in CPS cat. p/n 8561for $12.95 and the "Threaded Hose Barb" p/n 8521 for $1.59, for me to have piece-of-mind that is was screwed together and it made it easy to add a gascolator too.
Fly safe.. Tim
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Some years back someone posted of a way to empty the rear tank first by not venting the front tank and running a fuel pickup thru the top of the rear tank into the top of the front tank then venting only the back tank. It will empty the rear tank first then act as the vent for the front tank. Who ever it was said it worked fine.
Just a though!!
Jack Carillon FS II Akron Ohio
[quote][b]
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Bill Long
Joined: 06 Apr 2010
Posts: 19
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| Posted: Sun Aug 11, 2013 12:34 pm Post subject: Fuel Systems |
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I have a firefly and use a 2 1/2 tank behind the 5 and I use the second tank as vent it empties first works great.
Sent from my Verizon Wireless 4G LTE Smartphone
-------- Original message --------
From: Jack <pcarillonsr(at)neo.rr.com>
Date: 08/11/2013 2:20 PM (GMT-05:00)
To: kolb-list(at)matronics.com
Subject: Re: Kolb-List: Fuel Systems
On 8/11/2013 11:23 AM, Tim Bjork wrote:
| Quote: | I have been reading the discussion about fuel tank systems. I fly the Firestar 11, and found the same problems with the top fuel draw system. The aircraft fly's with the tail high, so the tanks are not level in flight the rear tank will run dry before the front one will, and as soon as the the rear tank runs dry and starts to suck air the engine will stop due to fuel starvation. So I decided to go to the bottom delivery system. I personally did not like the rubber push-in tank grommet in the bottom of the tank, I must say I have never heard of this system failing, but I did find this "Tank Access Bulkhead" in CPS cat. p/n 8561for $12.95 and the "Threaded Hose Barb" p/n 8521 for $1.59, for me to have piece-of-mind that is was screwed together and it made it easy to add a gascolator too.
Fly safe.. Tim
|
Some years back someone posted of a way to empty the rear tank first by not venting the front tank and running a fuel pickup thru the top of the rear tank into the top of the front tank then venting only the back tank. It will empty the rear tank first then act as the vent for the front tank. Who ever it was said it worked fine.
Just a though!!
Jack Carillon FS II Akron Ohio
[quote][b]
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Sun Aug 11, 2013 3:43 pm Post subject: Fuel Systems |
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Not to beat a dead horse but I have a Flightstar IISC in the shop for an annual right now. I was in the process of rewinding the bungee cords on the main gear and had to move the fuel tap on the bottom of the tank to get access to the left main gear. All I did was twist the push in fitting slightly and it began to drip gas. Nothing I could do would stop it once it had started, yet I could see no evidence of previous leakage. I drained the tank and removed the fuel grommet. Sure enough, it was split. I guess all it took was moving the fitting to finish off the split. Thankfully I had new grommets in stock and it didn't happen while the owner was out flying around as there is no fuel gauge in the aircraft. Not that bottom taps are bad, they're just one more inspection item.
Rick Girard
On Sun, Aug 11, 2013 at 3:33 PM, blong6826 <blong6826(at)sbcglobal.net (blong6826(at)sbcglobal.net)> wrote:
| Quote: | I have a firefly and use a 2 1/2 tank behind the 5 and I use the second tank as vent it empties first works great.
Sent from my Verizon Wireless 4G LTE Smartphone
-------- Original message --------
From: Jack <pcarillonsr(at)neo.rr.com (pcarillonsr(at)neo.rr.com)>
Date: 08/11/2013 2:20 PM (GMT-05:00)
To: kolb-list(at)matronics.com (kolb-list(at)matronics.com)
Subject: Re: Fuel Systems
On 8/11/2013 11:23 AM, Tim Bjork wrote:
| Quote: | I have been reading the discussion about fuel tank systems. I fly the Firestar 11, and found the same problems with the top fuel draw system. The aircraft fly's with the tail high, so the tanks are not level in flight the rear tank will run dry before the front one will, and as soon as the the rear tank runs dry and starts to suck air the engine will stop due to fuel starvation. So I decided to go to the bottom delivery system. I personally did not like the rubber push-in tank grommet in the bottom of the tank, I must say I have never heard of this system failing, but I did find this "Tank Access Bulkhead" in CPS cat. p/n 8561for $12.95 and the "Threaded Hose Barb" p/n 8521 for $1.59, for me to have piece-of-mind that is was screwed together and it made it easy to add a gascolator too.
Fly safe.. Tim
|
Some years back someone posted of a way to empty the rear tank first by not venting the front tank and running a fuel pickup thru the top of the rear tank into the top of the front tank then venting only the back tank. It will empty the rear tank first then act as the vent for the front tank. Who ever it was said it worked fine.
Just a though!!
Jack Carillon FS II Akron Ohio
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It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
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