Dan Gervae
FRIEND
This is what EarthX has to say.
https://earthxbatteries.com/engine-compartment-battery-installations
dga,If you’ve ever seen a lithium battery cook off, you wouldn’t want it in the cabin! I know they’v come a long way, but for me, other side of the firewall and the built in monitor system is the only way I’m comfortable.
..... (they don’t let me use my DAR or DER on my own airplane).
The stuff the political signs are made from burns and melts into a mess...the FR treated stuf self extinguishes and looks like it might be a winner. I will put some nice grey fabric on it and i can cut this stuff wherever and use the fabric as a means to splice and make angle transitions to bring it all together. I better start shopping for a DAR to do my inspection.....in April? I wonder if I should call the FSDO first...trouble is....my FSDO is in Grand Rapids, MI almost 8 hrs drive....Milwaukee, WI FSDO is 4 hrs away. Ant advice from you guys "In the know" on this?
Snorkel caps are over kill in your application. Actually not really needed on a 150 hp unless you want to meet the FAA requirements for fuel flow. Test it to be sure.
CAR Part 3:i have CubCrafter headerless fuel system on my J-3 with two 18 gallon tanks. It was installed by Cubcrafter when they owned the plane years ago and while the STC is included in the paperwork, and it is appropriately signed off, the STC information is not with the plane. I have requested from CC the complete paperwork but never have received it. It does not have snorkel caps. My 18 has the same headerless fuel system and I have that paperwork which calls for Cubcrafter caps part numbers 101716-31 which are snorkel caps. The J-3 has only a C-90 in it. I’m not sure if I should have the snorkel caps on the J-3 or not. Does anyone know if they are required on a J-3 with that STC? I gues that’s a question fo CC.
I did put stainless screens over the ends of the snorkels on my 18.
Thoughts on the snorkel requirement on the J-3?
Mark, The two airplanes are under two different Type Certificates. They will require two different STCs even though the parts may be the same. If they happen to be on the same STC, there would be specific requirements listed for the use of the caps on each model of airplane.I think the CubCrafters STC covers PA-18’s, and was shown to be compatible with your J-3 with a PA-18 fuel system. Since the STC requires the snorkel caps I think you’d need an exception to remove them...
CAR Part 3:
"§ 3.434 Fuel flow rate for gravity feedsystems. The fuel flow rate for gravity feedsystems (main and reserve supply) shall be 1.2pounds per hour for each take-off horsepower or150 percent of the actual take-off fuelconsumption of the engine, whichever is greater."
Those snorkel caps are to ensure an adequate fuel flow for higher fuel consumption engines. Your C-90's fuel requirement isn't high enough to need the added push of the snorkel pressure.
Not for the sake of argument, but that won't fly for me as an IA, and I am not hard to get along with at all. The STC for such as you are referring to would have to have the aircraft model listed on the eligibility list. If the aircraft model is listed you are good to go.J-3 was built under the CAR 4 regulations. Not sure if CAR 3 is applicable.
Also when an STC is deemed by the holder to be acceptable I believe it can be used on a different plane in some circumstances. For example a J-3 with an 18 rear seat may use at the holders discretion an under 18 rear seat storage compartment or with an 18 front seat may use an under front seat battery STC I think.
All this is written as question rather than as a statement. I have seen it done.