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                           JabiruEngine-List Digest Archive
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                     Total Messages Posted Fri 09/27/13: 1
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Today's Message Index:
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     1. 08:59 AM - Induction Air Inlet  (BobbyPaulk@comcast.net)
 
 
 
________________________________  Message 1  _____________________________________


Time: 08:59:09 AM PST US
From: BobbyPaulk@comcast.net
Subject: JabiruEngine-List: Induction Air Inlet

Rich 
I agree with Mark. The vertical inlet is better. 
I have the older air / filter box that is at least 50% larger in area than the
newer ones. It uses a K & N Filter that is about 5 1/2" Wide by about 12" long.
It has a much less pressure drop across the filter than the smaller ones. The
factory outlet was about in line horizontally with the carb so I used a piece
of radiator hose to connect to the carb. The NAPA store let me browse thru the
hoses until I found one that had just the right angle. When I attempted a take
off the pressure differential at the high throttle setting collapsed the hose
right at rotation speed. Lucky for me! The engine quit cold turkey and the
prop stopped like you just switched it off. After sitting there trying to think
about what had just happened it started right up and I taxied back to the hangar.
Another few seconds and I would have been in the trees. 
Please do not use a rubber hose on the inlet. 
I changed to a fiberglass elbow that I fabricated and that helped some but not
much 
The best fix was when I plugged the outlet and came out near the top of the filter
box and came down vertical to the carb. I also installed a divider in the
fiberglass elbow. I believe that the Bing carb does not atomize the fuel evenly
and we will continue to have problems. Seems like whatever we do is a compromise.


Bobby ( age 75 ) 
Zodiac 601 XL "B" 
Jabiru 3300 S/N 1141 
Sensenich 64" x 51" Prop 
Bing Carb 260 Main & 290 Needle Jet 
Status - Flying 188 hrs. 

Do Not Archive 


 

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