question

[cameron]

Pre-made Bladders can be bought from these guys
http://pages.prodigy.net/gcleveland_grsmodels/_import/pages.prodigy.net/
gcleveland_grsmodels/index6.html
 same guys that sell the Falcon. The Cobra is the NEW HOT BIRD! (Variant
of the Falcon).
 
 Bladder  tanks are filled like Jerry said with syringes. Best to pre
stretch them with air before first use. Dont let them get compressed in
what ever holds them cause it will effect pressure. 
 
 For about 20 bucks you can get all the hardware from Mcmaster car
http://www.mcmaster.com/. to make 100 of them!
 
 For more Bladder tank info see link http://www.texascombat.com/  see
bladder tank article under workshop link. 
 
 For more info on Combat issues you are welcome to contact me off-line. 
 
 Falcon & Cobra flight tests & setup Articles
http://www.georgiacombat.com/
 
 
 
 

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Jerry Stebbins
Sent: Monday, August 09, 2004 9:50 PM
To: discussion at nsrca.org
Subject: Re: question


Richard, we used to use a large syringe that was used to give shots to
horses. Bought them at any Co-op or feed store. Need the size (Diameter)
to develop the pressure to start the flow. We were using pen
bladders,and needed a lot more pressure to start the filling than it did
to fill them. Don't remember the running pressure ( back in 1952 ) but
it only took a 1/4 turn to run a 60.
Jerry

----- Original Message ----- 
From: Fletcher, Richard <mailto:Richard.Fletcher at gs.com>  
To: 'discussion at nsrca.org' 
Sent: Monday, August 09, 2004 9:52 AM
Subject: question


I bought an RC combat plane called the Falcon 72 by GRS Models. It won
the Nats in 2003 and is essentially a flying wing. It came with a
bladder tank made from a piece of silicon tubing. I could not fill this
tank using either an electric pump, hand pump or a fuel bulb. Does
anyone have any experience with this type of tank? I suspect that it
needs to be broken in but I am not sure of how to proceed. Any
suggestions are welcome. I have heard that guys use a syringe to fill
the tank, does anyone know where I can buy one locally?

 

 

Thanks, Rich 

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