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Hand propping a fuel injected 320 - possible?

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Doug Gray

Joined: 10 Jan 2006
Posts: 112
Location: Sydney, Australia

Posted: Sun Sep 06, 2009 10:52 pm Post subject: Hand propping a fuel injected 320 - possible?

Folks,



I am considering converting my O-320 to an IO-320 with the Precision

system and had a thought about hand starting - perhaps it is not

possible to swing the prop for a start like one can with a carby.



I expect the most likely reason to swing the prop is a flat battery - in

which case priming would not be possible so my gut feeling is that it

would be next to impossible to make an engine start under these

circumstances.



Any advice?



We have many very isolated airfields in this country and being stranded

can be a major risk.



Doug Gray

Sydney,

Australia

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Gary.A.Sobek

Joined: 09 Jan 2006
Posts: 217
Location: SoCAL USA

Posted: Mon Sep 07, 2009 2:20 am Post subject: Hand propping a fuel injected 320 - possible?

IF you can PRIME the system C it should be just as easy to start.  The carb has fuel in the float bowl and pulling the blade through gets the air fuel mixture into the cylinder to be ignited when you switch the mag on.  As long as you can run the fuel pump to get fuel in the system to the injectors C it will hand prop just as easy as the carb.  No fuel to the injectors C no start.



I have helped hand prop a FI 360 (180 HP) once so know it can be down. The 360 is much harder to hand prop than the 320.



Gary A. Sobek 

"My Sanity" RV-6 N157GS O-320 Hartzell C  

2 C296+ Flying Hours So. CA C USA 



 	  Quote: 	
		   Subject: RV-List: Hand propping a fuel injected 320 - possible?

 From: dgra1233(at)bigpond.net.au

 To: rv-list(at)matronics.com

 Date: Mon C 7 Sep 2009 16:45:32 +1000

 

 --> RV-List message posted by: Doug Gray <dgra1233(at)bigpond.net.au>

 

 

 Folks C

 

 I am considering converting my O-320 to an IO-320 with the Precision

 system and had a thought about hand starting - perhaps it is not

 possible to swing the prop for a start like one can with a carby.

 

 I expect the most likely reason to swing the prop is a flat battery - in

 which case priming would not be possible so my gut feeling is that it

 would be next to impossible to make an engine start under these

 circumstances.

 

 Any advice?

 

 We have many very isolated airfields in this country and being stranded

 can be a major risk.

 

 Doug Gray

 Sydney C

&gt Archive Search & Download C 7-Day Browse C Chat C FAQ C
	


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[quote] 

 

 

Windows Live: Keep your friends up to date with what you do online. Find out more.   	  Quote: 	
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n8zg(at)mchsi.com
Guest

Posted: Mon Sep 07, 2009 3:39 am Post subject: Hand propping a fuel injected 320 - possible?

Doug - 



Unless it's completely dead, a battery that won't turn the engine over

probably has enough residual energy to run the fuel pump for priming.  



Or you could provide for a connection directly to the fuel pump for a small

emergency battery.  An 8-slot AA-size battery holder from your local Radio

Shack-equivalent connected directly to the pump should be more than adequate

for priming (and serves double duty as neat, secure storage for the extra

batteries for your hand-held radio and flashlight).  



neal



====================

Folks,



I am considering converting my O-320 to an IO-320 with the Precision

system and had a thought about hand starting - perhaps it is not

possible to swing the prop for a start like one can with a carby.



I expect the most likely reason to swing the prop is a flat battery - in

which case priming would not be possible so my gut feeling is that it

would be next to impossible to make an engine start under these

circumstances.



Any advice?



We have many very isolated airfields in this country and being stranded

can be a major risk.



Doug Gray

Sydney,

Australia

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

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