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Squeeze Bulb Safety & Positive Pressure Prime

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jbhart(at)onlyinternet.ne
Guest

Posted: Tue Mar 16, 2010 11:09 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

FireFlyer's,



Put up a couple of pages that might be of interest.  The first shows a 

method of how to safety a fuel squeeze bulb while saving some weight and at 

the same time simplifying the fuel system.  



It can be seen at:



http://jackbhart.com/firefly/firefly157.html



The second shows a method for getting rid of the squeeze bulb all together 

providing additional weight savings and system simplification.  Herb gave me 

the idea.



It can be seen at:



http://jackbhart.com/firefly/firefly157a.html



These methods were investigated while trying to figure out how to get fuel 

to the Tillotson carburetor on the MZ 34. Turns out that neither of them 

will work, but they will with the Bing.  And each will save a little 

weight.



Clouds and rain have moved in.  Snow is gone.  Wings are back on the FireFly.



Jack B. Hart FF004

Winchester, IN

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Tue Mar 16, 2010 2:00 pm Post subject: Squeeze Bulb Safety & Positive Pressure Prime

Very interesting Jack, However I have a much more  effective way to reduce the weight of my airplane, so far I have cut 20 pounds  off my Firestar's flying weight, and if my resolve holds out I may loose another  10 pounds off it. Saves on food money too.

 Larry C

  

 Note: If you forward this email, please delete the forwarding history,  which includes my email address.

 [quote]   ---

_________________
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jbhart(at)onlyinternet.ne
Guest

Posted: Tue Mar 16, 2010 3:43 pm Post subject: Squeeze Bulb Safety & Positive Pressure Prime

FireFlyer's,             #2



Put up a couple of pages that might be of interest.  The first shows a 

method of how to safety a fuel squeeze bulb while saving some weight and at 

the same time simplifying the fuel system.  



It can be seen at:



http://jackbhart.com/firefly/firefly157.html



The second shows a method for getting rid of the squeeze bulb all together 

providing additional weight savings and system simplification.  Herb gave me 

the idea.



It can be seen at:



http://jackbhart.com/firefly/firefly157a.html



These methods were investigated while trying to figure out how to get fuel 

to the Tillotson carburetor on the MZ 34. Turns out that neither of them 

will work, but they will with the Bing.  And each will save a little 

weight.



Clouds and rain have moved in.  Snow is gone.  Wings are back on the FireFly.



Jack B. Hart FF004

Winchester, IN

Dana

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

Posted: Tue Mar 16, 2010 5:12 pm Post subject: Squeeze Bulb Safety & Positive Pressure Prime

At 11:08 AM 3/16/2010, Jack B. Hart wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "Jack B. Hart" <jbhart(at)onlyinternet.net>



 Put up a couple of pages that might be of interest.  The first shows a 

 method of how to safety a fuel squeeze bulb while saving some weight and at 

 the same time simplifying the fuel system.  



 It can be seen at:



 http://jackbhart.com/firefly/firefly157.html 	


 Problem is, it doesn't prevent a leaky bulb or stuck check valve... the latter nearly cost me my plane on my first flight in it.



 In the end I ditched the bulb and installed a plunger primer.



 -Dana



 

 --

  If God took acid, would He see people?    [quote][b]

Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Wed Mar 17, 2010 1:56 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

I've tried numerous plunger type primers with mixed results but ultimately they all eventually leaked or stuck.I finally settled on the button type primer which simply works with no leaks and weighs almost nothing and lasts longer for me than any plunger type that I have tried.

Here is a link for the button type I use.

http://www.jackofmosttrades.com/Rotax_Parts/Primer_Plunger_Button/primer_plunger_button.html

Gene Z



On Mar 16, 2010, at 7:59 PM, Dana Hague wrote:

[quote]At 11:08 AM 3/16/2010, Jack B. Hart wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "Jack B. Hart" <jbhart(at)onlyinternet.net (jbhart(at)onlyinternet.net)>



 Put up a couple of pages that might be of interest.  The first shows a 

 method of how to safety a fuel squeeze bulb while saving some weight and at 

 the same time simplifying the fuel system.  



 It can be seen at:



 http://jackbhart.com/firefly/firefly157.html 	


 Problem is, it doesn't prevent a leaky bulb or stuck check valve... the latter nearly cost me my plane on my first flight in it.



 In the end I ditched the bulb and installed a plunger primer.



 -Dana



 

 --

  If God took acid, would He see people?  	  Quote: 	
		  



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[b]

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Wed Mar 17, 2010 2:51 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

Jack, all, I probably missed this as your work is always very thorough, but how do you pressurize a vented tank?



Rick Girard



On Tue, Mar 16, 2010 at 9:10 PM, Eugene Zimmerman <etzimm(at)gmail.com (etzimm(at)gmail.com)> wrote:

 [quote]I've tried numerous plunger type primers with mixed results but ultimately they all eventually leaked or stuck. I finally settled on the button type primer which simply works with no leaks and weighs almost nothing and lasts longer for me than any plunger type that I have tried.

Here is a link for the button type I use.

 



http://www.jackofmosttrades.com/Rotax_Parts/Primer_Plunger_Button/primer_plunger_button.html

 



Gene Z



 On Mar 16, 2010, at 7:59 PM, Dana Hague wrote:



 	  Quote: 	
		  At 11:08 AM 3/16/2010, Jack B. Hart wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "Jack B. Hart" <jbhart(at)onlyinternet.net (jbhart(at)onlyinternet.net)>

 

 Put up a couple of pages that might be of interest.  The first shows a 

 method of how to safety a fuel squeeze bulb while saving some weight and at 

 the same time simplifying the fuel system.  



 It can be seen at:

 

 http://jackbhart.com/firefly/firefly157.html 	


 Problem is, it doesn't prevent a leaky bulb or stuck check valve... the latter nearly cost me my plane on my first flight in it.

 

 In the end I ditched the bulb and installed a plunger primer.



 -Dana



 

 --

  If God took acid, would He see people?  	  Quote: 	
		  



href="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics.com/Navigator?Kolb-List

href="http://forums.matronics.com">http://forums.matronics.com

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_blank">http://www.matronics.com/contribution



	


[b]

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Dana

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

Posted: Wed Mar 17, 2010 3:57 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

That's the one I was talking about.  Works great, and if you tee it off the fuel line near the carburetor, it will draw fuel up from the tank and fill an empty fuel line.



 -Dana



 At 10:10 PM 3/16/2010, Eugene Zimmerman wrote:

  	  Quote: 	
		  I've tried numerous plunger type primers with mixed results but ultimately they all eventually leaked or stuck.

 I finally settled on the button type primer...

 http://www.jackofmosttrades.com/Rotax_Parts/Primer_Plunger_Button/primer_plunger_button.html



 On Mar 16, 2010, at 7:59 PM, Dana Hague wrote:



  	  Quote: 	
		  

 In the end I ditched the bulb and installed a plunger primer. 	
	


 --

  1.  Programmers are expensive.

 2.  Press releases are cheap.

 3.  Therefore, it's cheaper to explain the bug than to fix it.    [quote][b]

jbhart(at)onlyinternet.ne
Guest

Posted: Wed Mar 17, 2010 4:18 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

Date: Wed, 17 Mar 2010 05:28:55 -0500

From: Richard Girard 

 	  Quote: 	
		  

Jack, all, I probably missed this as your work is always very thorough, but 
	


how do you pressurize a vented tank?

 	  Quote: 	
		  


	


Rick,



Once the bicycle pump is removed, the tire valve stem installed in the tank 

acts as the vent.  Any previous vent must be plugged.



Jack B. Hart FF004

Winchester, IN

herbgh(at)nctc.com
Guest

Posted: Wed Mar 17, 2010 6:12 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

My Version has a squeeze bulb plumbed into the top tank using a 

schrader valve with the internals taken out....to fill the float 

bowl, I just place my finger over the vent hole and squeeze the 

bulb... Easy to do on a full tank but a bit tedious on a partially 

full tank... Simple enough...



   Jack has me thinking about taking along  a tool kit, bicycle pump 

, tie downs etc..for those times when I venture off the beaten path...Herb

At 07:13 AM 3/17/2010, you wrote:

 	  Quote: 	
		  



Date: Wed, 17 Mar 2010 05:28:55 -0500

From: Richard Girard

 >

Jack, all, I probably missed this as your work is always very thorough, but

how do you pressurize a vented tank?

 >



Rick,



Once the bicycle pump is removed, the tire valve stem installed in the tank

acts as the vent.  Any previous vent must be plugged.



Jack B. Hart FF004

Winchester, IN

Vic Peters

Joined: 30 Oct 2009
Posts: 54
Location: Millinocket, Maine

Posted: Wed Mar 17, 2010 6:38 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

My plunger primer ($20) worked great for a  while then leaked after just a few hrs.

 I deconstructed it and was amazed at what a piece  of crap it was.

 Imo your just playing with fire, pun  intended.

 Use of a used certified one would be much  safer.

 I'm going back to a fuel pump.

  

 Vic

 Xtra 912ul

  

  

   [quote][b]

_________________
Vic
912ul Xtra
Maine
Too old to cut the mustard but not the cheese.

jbhart(at)onlyinternet.ne
Guest

Posted: Wed Mar 17, 2010 7:23 am Post subject: Squeeze Bulb Safety & Positive Pressure Prime

From: "Larry Cottrell" <lcottrell(at)fmtcblue.com>

Date: Tue, 16 Mar 2010 13:51:16 -0600

 	  Quote: 	
		  

Very interesting Jack, However I have a much more effective way to reduce 
	


the weight of my airplane, so far I have cut 20 pounds off my Firestar's 

flying weight, and if my resolve holds out I may loose another 10 pounds off 

it. Saves on food money too.

 	  Quote: 	
		  


	


Larry,



I applaud your efforts to keep the G-loading of your aircraft to the 

minimum, and to keep the pilot trim and fit.



Jack B. Hart FF004

Winchester, IN



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