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Gas tank pick-up

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DAquaNut(at)aol.com
Guest

Posted: Thu Mar 23, 2006 8:52 pm Post subject: Gas tank pick-up

Group,

 

  Can anyone tell me from experience which will provide the most  useable 

fuel from the tank of a firefly. The pick up tube in the front, OR in  the back 

of the tank?  Seems the front position would be best, but It seems  inertia 

would push the gas to the back. But, then again if you were getting low  and 

started down it would seem the gas would gravitate forward. Which is better  

forward in the tank or the back?

 

            Ed

donaho(at)csrlink.net
Guest

Posted: Fri Mar 24, 2006 4:10 am Post subject: Gas tank pick-up

Hi Ed and all, I put my pick-ups toward the front, because as you say, if I 

am that low on fuel, I figure I will be in a decent to land.   Lanny 

Fetterman  Firestar II  N598LF      Do not archive               P.S. To 

this date I have never allowed myself to get that low on 

fuel!

slyck(at)frontiernet.net
Guest

Posted: Fri Mar 24, 2006 4:52 am Post subject: Gas tank pick-up

My vote is toward the back of the tank.  Running out in a climb

would (for me anyway) be more disturbing than when already

descending.

This year I may actually try out the second tank using the

pull-through plumbing.  Curious if it works.

-BB

MkIIIc, suzuki

do not archive

On 23, Mar 2006, at 11:50 PM, DAquaNut(at)aol.com wrote:



 	  Quote: 	
		   



 Group,



   Can anyone tell me from experience which will provide the most  

 useable

 fuel from the tank of a firefly. The pick up tube in the front, OR in  

 the back

 of the tank?  Seems the front position would be best, but It seems  

 inertia

 would push the gas to the back. But, then again if you were getting 

 low  and

 started down it would seem the gas would gravitate forward. Which is 

 better

 forward in the tank or the back?



             Ed

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Fri Mar 24, 2006 5:15 am Post subject: Gas tank pick-up

On Mar 24, 2006, at 7:51 AM, robert bean wrote:



 	  Quote: 	
		   This year I may actually try out the second tank using the

 pull-through plumbing.  Curious if it works.


	


It works.  First tank stays full until the second is empty.



The only exception is with short hops and lots of starts and stops.

Each time you restart in must use a small amount from the first tank  

to build up enough vacuum before it begins to draw from the second tank.

a58r(at)verizon.net
Guest

Posted: Fri Mar 24, 2006 10:24 am Post subject: Gas tank pick-up

Unless you were dec/accelerating, the level would remain constant.

regards,

Bob N.

http://www.angelfire.com/rpg/ronoy/



do not archive

John Jung

Joined: 10 Jan 2006
Posts: 108
Location: Surprise, AZ, USA

Posted: Fri Mar 24, 2006 12:08 pm Post subject: Re: Gas tank pick-up

 	  DAquaNut(at)aol.com wrote: 	
		  

Which is better forward in the tank or the back?

Ed 	




Ed,



I say the front of the tank because in normal flight the tail is high with the boom tube slanting toward the front.

_________________
John Jung
Firestar II N6163J
Surprise, AZ

planecrazzzy
Guest

Posted: Fri Mar 24, 2006 2:21 pm Post subject: Re: Gas tank pick-up

FUEL "PICK-UP"..........Mine are FRONT and REAR - "LEFT Side"



 Because most "patterns" are LEFT

 Gotta Fly...

 Mike in MN  / N381PM

.

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Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Fri Mar 24, 2006 6:39 pm Post subject: Gas tank pick-up

On Mar 24, 2006, at 5:21 PM, planecrazzzy wrote:



 	  Quote: 	
		   FUEL "PICK-UP"..........Mine are FRONT and REAR - "LEFT Side"



  Because most "patterns" are LEFT


	




Are you serious?

Fly coordinated and it makes ABSOLUTELY no difference if you bank  

left or right .

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Sat Mar 25, 2006 3:50 am Post subject: Gas tank pick-up

On Mar 25, 2006, at 1:35 AM, planecrazzzy wrote:



Hello, thank you for your email.

Due to the amount of spams I used to receive in my mailbox, I am  

using End2Spam anti-spam service to protect my email inbox. If you  

want your messages to reach me you will need to click on the link below.

http://www.end2spam.com/public/thanks.php? 

VkZaU1JrMUZNVFpUVkVreVRqQXhWRTVJY0U1U1IwNHo

Thanks and regards



yasir sabri



If this link appears broken in your email client, please copy and  

paste the entire link in one line in your web browser.



,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,  

<grin> ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

planecrazzzy
Guest

Posted: Sat Mar 25, 2006 6:29 am Post subject: Re: Gas tank pick-up

Euguene ( Pappa Vein),



              If I EVER want YOUR opinion.....I'll ask you for it ( Fat chance )



  I've told you before.....I don't reply to your messages....and I really don't care for the constant sarcastic messages that I recieve from you...

         

    If you wanted to "PICK IT APART" you should have focused on the "front and rear" fuel pick up.....

     I sent you a Private message , keeping it "OFF LIST" , but you seemed to have ignored it.....



     It's been people like you that makes me like my DOG more...



                                    Gotta Fly...

.

.

.

.

Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Sat Mar 25, 2006 6:39 am Post subject: Re: Gas tank pick-up

Two fuel pick-ups? 



Unless the fuel level is above the fuel pump having two fuel suction lines will not gain you a thing. If the fuel level is below the fuel pump, when one of the two pick-ups is exposed to air, air is all your pump will get. This is why on low wing airplanes like Piper Cherokees, there is not a BOTH position on the fuel tank selector, but is on the high wing Cessnas where the fuel pump is gravity fed. 



If you don't believe this fill a glass half full of water (or Scotch if you like) and suck on two straws simultaneiously with one below the top of the liquid and the other above the liquid. You'll never get drunk doing this but you might hyperventilate trying.



Of course if you have a submersible pump like in the bottom of water wells, then this is of no consequence.



Thom in Buffalo

do not archive

pj.ladd(at)btinternet.com
Guest

Posted: Sat Mar 25, 2006 8:53 am Post subject: Gas tank pick-up

Because most "patterns" are LEFT>>



Hi Planecrazy.



Very funny and at least as much sense as having a pickup at the back because 

`the fuel heaps up at the back when you are flying`



Cheers



Pat



do not archive





--

planecrazzzy
Guest

Posted: Sat Mar 25, 2006 9:17 am Post subject: Re: Gas tank pick-up

Hey Guys,

                Yes, I'm not really happy with my fuel pick up system, Later I'll probly try the system where the vent is in the second tank.....The only thing that I don't like about that is drilling a hole in the bottom of the first tank.... But then again.... I do want to add a drain cock on the bottom of the tanks....Somethin like the one Paul Petty put on he Kolbra....



 But I've been on the look out for a fitting that will allow the very bottom to drain..... I might have to make something...



  Plenty of time for improvements....

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Sat Mar 25, 2006 11:31 am Post subject: Gas tank pick-up

On Mar 25, 2006, at 12:17 PM, planecrazzzy wrote:



 	  Quote: 	
		   I'll probly try the system where the vent is in the second  

 tank.....The only thing that I don't like about that is drilling a  

 hole in the bottom of the first tank....


	




One thing I like about that system is that it requires no holes in  

the bottom of the tanks.



A drain cock in the bottom of the tanks may be a good idea if a  

fitting can be installed that actually drains the very bottom. All  

the  fittings I've seen used on these poly tanks stand up inside the  

tank preventing the very bottom from draining.



What I like about a tank without a bottom hole is that it can easily  

be removed periodically for complete clean-out.

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