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emessys · , 02:26 PM

I am considering a Rear Induction Engine (either DA85 or 3W75) for a Warbird (sorry

).

Are you guys finding it necessary to build a baffle/air box behind the firewall to prevent fuel spray/glop in the fuselage.

TIA
Ira

Zee · , 02:47 PM

I make 3/32" (or 1/16", would be fine) balsa pettition to prevent the air to go inside of fuselage.
Zee

sweetpea · , 03:27 PM

If you check out my TF-p47 build thread.........my builder will be making a box for my 3W55i

rcign · , 03:30 PM

Warbirds rule

, no (sorry) necessary...
A reed valve rear induction engine won't let fuel back out of the carb unless the reeds leak...Since both engines have reed valves, it shouldn't be a problem....

sweetpea · , 03:37 PM

I disagree.......when you prime the engine the carb will have fuel in it and it can and will spit out from the butterfly. We are not talking about gobs of fuel but overtime with the inablitiy to easily clean it up it can be a mess.

mikel7099 · , 06:00 PM

I put an air cleaner on my carb thats it. Haven't had any fuel in box yet!

emessys · , 06:16 PM

Quote:

Originally Posted by mikedannielle

I put an air cleaner on my carb thats it. Haven't had any fuel in box yet!

How long is "yet"?

Ira

mikel7099 · , 06:26 PM

Its been about 1yr and about 30 flights. Not a drop!!!!

12-04-2007, 02:26 PM #1
emessys
emessys Registered User United States, NY, Kings County Joined Jan 2006 1,103 Posts	REAR INDUCTION ENGINE BAFFLE I am considering a Rear Induction Engine (either DA85 or 3W75) for a Warbird (sorry ). Are you guys finding it necessary to build a baffle/air box behind the firewall to prevent fuel spray/glop in the fuselage. TIA Ira

12-04-2007, 02:47 PM #2
Zee
Zee Joined Jan 2007 440 Posts	Re: REAR INDUCTION ENGINE BAFFLE I make 3/32" (or 1/16", would be fine) balsa pettition to prevent the air to go inside of fuselage. Zee

12-04-2007, 03:27 PM #3
sweetpea
sweetpea If you can't HUCK it BLING IT! United States, OH, Lebanon Joined Jan 2006 11,244 Posts	Re: REAR INDUCTION ENGINE BAFFLE If you check out my TF-p47 build thread.........my builder will be making a box for my 3W55i

12-04-2007, 03:30 PM #4
rcign
rcign Registered User Williams, Az USA Joined Jan 2006 2,439 Posts	Re: REAR INDUCTION ENGINE BAFFLE Warbirds rule , no (sorry) necessary... A reed valve rear induction engine won't let fuel back out of the carb unless the reeds leak...Since both engines have reed valves, it shouldn't be a problem....

12-04-2007, 03:37 PM #5
sweetpea
sweetpea If you can't HUCK it BLING IT! United States, OH, Lebanon Joined Jan 2006 11,244 Posts	Re: REAR INDUCTION ENGINE BAFFLE I disagree.......when you prime the engine the carb will have fuel in it and it can and will spit out from the butterfly. We are not talking about gobs of fuel but overtime with the inablitiy to easily clean it up it can be a mess.

12-04-2007, 06:00 PM #6
mikel7099
mikel7099 Registered User Pa Joined Sep 2006 1,569 Posts	Re: REAR INDUCTION ENGINE BAFFLE I put an air cleaner on my carb thats it. Haven't had any fuel in box yet! Images View all Images in thread Views: 173

12-04-2007, 06:26 PM #8
mikel7099
mikel7099 Registered User Pa Joined Sep 2006 1,569 Posts	Re: REAR INDUCTION ENGINE BAFFLE Its been about 1yr and about 30 flights. Not a drop!!!!

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