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  #1  
Old 11-30-2011, 03:51 PM
trib trib is offline
 
Join Date: Aug 2005
Location: Virginia Beach, VA
Posts: 474
Angry Fuel primer line problems

I know there have been many posts regarding the 1/8" copper tubing used for the primer from the solenoid to the lycoming tee. Does anyone have any details on replacing with braided hose? The question is the lycoming ball-end fitting for the tubing that mates with the tee. Is there an adapter out there that would let you use a fitting that would connect to braided hose? I haven't been able to find one. I talked with Brett at Boanco and he's willing to help if we can provide some info to him in order to produce the fitting. does anyone have any specs on the ball-end fitting? I'm going to try and come up with one to send if I can find some old primer tubing. My line recently broke, but I inserted a 1/8" universal rivet into the fitting to seal it off. I just happened to notice the copper line had sheared (even with 3 vertical and 3 horizontal service loops) when I had the cowling off for something else. Not sure how long I've been squirting gas on the engine when priming for start (annual was in April). I'm anxious to know if someone already has solved this as far as how to use flexible lines.
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  #2  
Old 11-30-2011, 04:00 PM
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LifeofReiley LifeofReiley is offline
 
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Location: Round Rock, TX
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Talk with Tom @ http://www.tsflightlines.com/
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  #3  
Old 11-30-2011, 04:10 PM
N79PT N79PT is offline
 
Join Date: Feb 2006
Posts: 81
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I did just what you are talking about with one or more adapters from Aircraft Spruce. I think I used a coupling and sleeve arrangement to a AN919 fitting (external adapter reducer) to get from the copper tubing (I cut the ball-end off) to adapt to the flex hose. Look here:
http://www.aircraftspruce.com/catalog/hapages/an919.php
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Yellow Peril / RV-6A SOLD
Albuquerque, New Mexico

Last edited by N79PT : 11-30-2011 at 04:22 PM. Reason: Corrected AN reducer info
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  #4  
Old 11-30-2011, 04:56 PM
trib trib is offline
 
Join Date: Aug 2005
Location: Virginia Beach, VA
Posts: 474
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So I have the lycoming setup, with stainless steel lines going to 3 of the 4 cylinders. All very well engineered and a solid system. I'd like to keep these and just tie from the solenoid to the inlet tee. If you need a picture, check out page 6-6, part 14 at the bottom center in the following link to the lycoming parts catalog: http://pj260.com/Lycoming/Parts%20Catalogs/PC-306-1.pdf .

I am not looking to install an entirely new system with made-up nozzles and braided lines to each cylinder, just need some way to adapt to the tee to install braided hose. The tee connection is an AN800-2 cone fitting which ACS has to braze to copper tubing.
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Tim Ribble
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RV-6A (only took 13 years to build )
N621TR In unrestricted operation
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  #5  
Old 12-01-2011, 05:51 AM
N79PT N79PT is offline
 
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Posts: 81
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So, from the Tee I soldered the AN800-2 to a 1/8" copper tubing (about 1-2" long) then used the fittings that I previously described to adapt the copper tubing to a standard flex hose which connects to the solenoid. Of course the AN800-2 and tubing is bolted to the Tee with a threaded tubing end fitting. Sorry I don't have a picture.
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Greg Grigson
Yellow Peril / RV-6A SOLD
Albuquerque, New Mexico

Last edited by N79PT : 12-01-2011 at 06:04 AM. Reason: Clarificarion
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  #6  
Old 12-01-2011, 08:43 AM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
Smile different approach-

I used restricted AN816-3 fittings at the cylinders, a AN824-3 tee, braided -3 hoses, and Vans solenoid. We plumb the front 2 cylinders. Hose lengths vary , depending on tee location, and solenoid location.
Tom
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Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
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