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Seat tanks

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Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Tue Dec 22, 2009 5:44 pm Post subject: Seat tanks

Has anybody used (or seen) a seat tank in an UltraStar?



Currently I have three tanks:  the two original 1.75 gallon tanks in front 

of the seat, and a 1.5 gallon tank behind the seat.  I want to replace all 

of these with a single tank, and use the space currently occupied by the 

original tanks for storage of small items.



I originally looked at a single tank above the engine and gravity feed 

(with the added benefit of eliminating the fuel pump), but there's really 

not enough room there.  I next looked at the space behind the seat, but 

that's pretty limited as well for any off the shelf tanks (I have a plastic 

tank a friend gave me, and it's 1/2" too wide to fit... grrrrr).  The only 

options remaining are a custom tank (too much cost or work) or a molded 

seat tank like these:



http://www.calumetair.com/tanks.php



-Dana



--

  CanYouFixTheSpaceBarOnMyKeyboard?

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williamtsullivan(at)att.n
Guest

Posted: Tue Dec 22, 2009 6:58 pm Post subject: Seat tanks

  Dana- A seat tank showed up on E-Bay a few months ago.  I seem to remember that the ad said it was from Aircraft Spruce, and it gave a part number.  I just tried to look it up in both the book and on line, and no luck.  You might try calling them in the morning- maybe it is not a catalogued item.  Good luck.

 

                                             Bill Sullivan

                                             Windsor Locks, Ct

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Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Wed Dec 23, 2009 3:52 am Post subject: Seat tanks

At 09:29 PM 12/22/2009, william sullivan wrote:

  	  Quote: 	
		    Dana- A seat tank showed up on E-Bay a few months ago.  I seem to remember that the ad said it was from Aircraft Spruce, and it gave a part number.  I just tried to look it up in both the book and on line, and no luck.  You might try calling them in the morning- maybe it is not a catalogued item.  	


 I know, I should have grabbed it then, but I was still looking at other options. I'm pretty sure it was the same as the one I posted the link to.



 -Dana

 

 --

  Newton's Seventeenth Law of American Life:

 For every action, there is an unequal and moronic overreaction.    [quote][b]

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williamtsullivan(at)att.n
Guest

Posted: Wed Dec 23, 2009 6:36 am Post subject: Seat tanks

Dana- I typed into web search "ultralight aircraft seat tanks", and came up with this:

  

 www.quicksilverultralight.com/other/fuel_tanks.htm#6gallon

  

 P.N. AC#397

  

 price- $450 (!!!!!!!)

  

   See if this is what we were looking at.  Maybe you can find it at a (much) better price.

  

                                                          Bill Sullivan

                                                          Windsor Locks, Ct.

                                                          FS 447

 [quote][b]

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williamtsullivan(at)att.n
Guest

Posted: Wed Dec 23, 2009 6:43 am Post subject: Seat tanks

Dana- Also Calumetair.com

  

 7.4 gallons, $259

                                                 Bill Sullivan

 [quote][b]

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Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Wed Dec 23, 2009 11:45 am Post subject: Seat tanks

At 09:34 AM 12/23/2009, william sullivan wrote:

  	  Quote: 	
		    Dana- Also Calumetair.com

  

 7.4 gallons, $259 	


 Bill, the Calumet is the one I'm looking at, and which I posted in the first message.  The Quicksilver tank is way too expensive.



 -Dana

 --

  Sometimes you're the windshield, sometimes you're the bug.    [quote][b]

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russkinne(at)mac.com
Guest

Posted: Wed Dec 23, 2009 4:21 pm Post subject: Seat tanks

DanaI think Ken Brock developed the seat tank many years ago, for Gyrocopters. Only complaint I ever heard was that they were COLD! -- after all, it is a huge heat-sink. In CA this didn't matter too much.

Good luck

Russ K

do not archive 





On Dec 23, 2009, at 2:38 PM, Dana Hague wrote:

 	  Quote: 	
		  At 09:34 AM 12/23/2009, william sullivan wrote:

  	  Quote: 	
		    Dana- Also Calumetair.com

  

 7.4 gallons, $259 	


 Bill, the Calumet is the one I'm looking at, and which I posted in the first message.  The Quicksilver tank is way too expensive.



 -Dana

 --

  Sometimes you're the windshield, sometimes you're the bug.  	  Quote:

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rlaird

Joined: 10 Jan 2006
Posts: 373
Location: Houston

Posted: Wed Dec 23, 2009 6:11 pm Post subject: Seat tanks

Most gyro owners have padded and/or foam seats and backs to their seat tanks, so the cold-complaint isn't really valid.  However, there are two issues to consider:



1.  Thin walls.  Because the walls of the seat tank are relatively thin, there is lots of change in the shape as you add fuel.  The change isn't significant at all in terms of comfort, safety or functionality, but, what it does do is, makes it more difficult to fill the seat tank up to the max level.  Even just sitting in it will push the gas up higher.  Then, as you hit bumps -- ground or air -- the gas will get redistributed around.  So, most gyro pilots don't fill them up near the top, so that gas won't come out the vent.

 

2.  Gas level.  The majority of gyros with seat tanks will use a clear tube that is ported into the top of the seat and into the bottom of the seat, and there will be a tiny plastic red cylinder that floats on top of the gas in the tube.  That is your gauge.  It takes a while to get used to that, and requires you be able to swivel your head (and often your body) around to view it.

 

  -- Robert (Kolb & Gyrobee owner)



On Wed, Dec 23, 2009 at 6:15 PM, russ kinne <russkinne(at)mac.com (russkinne(at)mac.com)> wrote:

 [quote] DanaI think Ken Brock developed the seat tank many years ago, for Gyrocopters. Only complaint I ever heard was that they were COLD! -- after all, it is a huge heat-sink. In CA this didn't matter too much.

 Good luck

Russ K

do not archive 





On Dec 23, 2009, at 2:38 PM, Dana Hague wrote:



 	  Quote: 	
		  At 09:34 AM 12/23/2009, william sullivan wrote:

   	  Quote: 	
		    Dana- Also Calumetair.com

  

 7.4 gallons, $259 	


 Bill, the Calumet is the one I'm looking at, and which I posted in the first message.  The Quicksilver tank is way too expensive.

 

 -Dana

 --

  Sometimes you're the windshield, sometimes you're the bug.  	  Quote: 	
		  

	
	


 



[b]

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_________________
~~~~~~~~~~~~~~~~~~~
Robert Laird
formerly: MkIIIc w/ 912ULS & Gyrobee
current: Autogyro Cavalon w/ 914ULS
Houston, TX area
http://www.Texas-Flyer.com

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