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Speed,Combat,Scale,Racing => Combat => Topic started by: Fred Quedenfeld jr on August 03, 2014, 04:59:57 PM

Title: bladder pinch off
Post by: Fred Quedenfeld jr on August 03, 2014, 04:59:57 PM

any one have a sketch or picture or availability of the wooden thing to pinch off the fuel line after you fill the bladder before you start the engine
Hemostats are too combersum for me to release quickly
Fred Quedenfeld

Title: Re: bladder pinch off
Post by: BillLee on August 03, 2014, 05:42:01 PM

  .. 

Title: Re: bladder pinch off
Post by: Phil Krankowski on August 03, 2014, 06:38:41 PM

not wood
http://www.hobbyking.com/hobbyking/store/__7673__Fuel_Line_Stopper.html

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXHGE2&P=7

http://www.ebay.com/itm/221503627770?ssPageName=STRK%3AMEBIDX%3AIT&fromMakeTrack=true

Or use a line clip as a pinch off.

good pictures here:
http://www.clcombat.info/bladder.html

Phil

Title: Re: bladder pinch off
Post by: Paul Smith on August 03, 2014, 07:47:12 PM

I don't have a picture, but we made them out of hardwood engine mount stick, ground to an angle, with rubber bands for compression. As the writer states, they were a lot quicker than hemostats.  When I get time I'll try to make one or two.

Title: Re: bladder pinch off
Post by: dave siegler on August 08, 2014, 06:56:33 AM

Here is what I use. 

A plywood clamp 1/18 plywood, a sewing spool.  Rubber bands are wrapped on the front end for tension ( removed for a better picture)  Someone called this a "Texas close pin"  It works very easy to release. 

a wire clip that bolts to the airplane.   About 3 minutes to make and you can open it with 2 fingers.   


A swing weight shut off works ever better.  You can open it with a pinky and it is easy when flying alone. 

Title: Re: bladder pinch off
Post by: Bob Mears on August 08, 2014, 01:57:11 PM

If you know a nurse, they can get u an unlimited supply of several IV pinch off's that work great too. usually free. they just throw them away.

Title: Re: bladder pinch off
Post by: RknRusty on August 09, 2014, 07:51:29 AM

Quote from: Bob Mears on August 08, 2014, 01:57:11 PM

If you know a nurse, they can get u an unlimited supply of several IV pinch off's that work great too. usually free. they just throw them away.

If you PM me your mailing address I'll send you a few of them.
Rusty

Title: Re: bladder pinch off
Post by: Bud Morrison on August 11, 2014, 01:07:12 PM

http://www.harborfreight.com/6-piece-78-spring-clamp-set-69375.html

Title: Re: bladder pinch off
Post by: Bob Mears on August 11, 2014, 03:12:38 PM

Those little dudes wont do it.

Title: Re: bladder pinch off
Post by: Bud Morrison on August 11, 2014, 05:52:51 PM

Quote from: Bob Mears on August 11, 2014, 03:12:38 PM

Those little dudes wont do it.

Hah those are the doll house sized ones. Didn't look at the size close. Either way harbor freight have ones that work as they are what I used.

http://www.harborfreight.com/catalogsearch/result?q=spring+clamp