Dan Gervae
FRIEND
Building an Experimental PA11
- Thread starter Dan Gervae
- Start date
wireweinie
FOUNDER
Palmer, AK
Have you considered mounting it between the kick panel and boot cowl? Left or right side. I wouldn't want it mounted right over the cabin heat valve as in the pic you showed.
Web
Web
Dan
The scat hose off the cabin heat can get well over 200 degrees. Local guys ran one to the rear under the pilots seat. They had a bag of shells on the floor while wolf hunting. When they got back they found several of the shells plastic melted from the heat. You might get by with some insulation but now it will be hard to divert for defrost. DENNY
The scat hose off the cabin heat can get well over 200 degrees. Local guys ran one to the rear under the pilots seat. They had a bag of shells on the floor while wolf hunting. When they got back they found several of the shells plastic melted from the heat. You might get by with some insulation but now it will be hard to divert for defrost. DENNY
skywagon8a
MEMBER
SE Mass MA6
This is what EarthX has to say.
https://earthxbatteries.com/engine-compartment-battery-installations
https://earthxbatteries.com/engine-compartment-battery-installations
That’s one reason I went with the Sutton exhaust, move the heat away from the firewall where my EarthX battery will be installed.
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skywagon8a
MEMBER
SE Mass MA6
dga,
Which version of the lithium battery are you referring to? The EarthX claims this: "The EarthX batteries use cells made of Lithium Iron Phosphate (LiFePO4) chemistry that was developed in the U.S.A. This chemistry is the highest performance, most robust and the safest on the market today."
https://earthxbatteries.com/our-batteries/lithium-battery-technology
Based upon EarthX's claims, it appears they are as safe as a lead acid battery. Using their claims, it appears they are safe for cockpit installation. If so, I would think it would be a better environment for the battery to be behind the firewall rather than with the engine?
Mine will be the EarthX EXT 900-TSO. I agree the iron phosphate is better that lithium ion, but it’s still new technology. My airplane is certified, not Experimental, so I have less latitude. Had to work up a Field Approval that my FAA Inspector would buy off on (they don’t let me use my DAR or DER on my own airplane).
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hotrod180
FRIEND
Port Townsend, WA
That seems like a bullshit policy to me.
IMHO no different than an IA signing off his own airplane's annual.
Dan Gervae
FRIEND
Upper Peninsula of Michigan
Just paid $574 for 4 -5/8" Univair strut forks....they had to be the J3 style.....ouch. I wonder why some of the J3 stuff costs more than Supercub? oh well. Do most of you use pressure caps on your fuel tanks? Mine is a headerless system (2-18 gallon Tanks). I think I would rather have it that way....if so, I need new caps. I need to order a bunch of stuff and take a week off to finish the hanger inside, then another to get as much of this plane finished up....so many little details to complete. My metal came for the ceiling of my hangar today...so time to focus. Had to roll her out today to stack the metal inside...I looks more doner than it is
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cubdriver2
FRIEND
upstate NY
Those caps a simple to convert with either brake line or copper tubing. I never had a Piper wing tank that needed them though. Champ wing tanks are a different story
Glenn
Glenn
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Dan Gervae
FRIEND
Upper Peninsula of Michigan
J3 strut fork is a different part number....the mounting holes on the fuselage are smaller??? And an 1/8” closer together...Somebody correct me if wrong...J3 has 5/16” holes 7/8” apart....Supercub has holes on fuselage attach points 1” apart bigger bolt hole. I’ve been wrong before though.
supercrow
FRIEND
Smith Pond near Millinocket, Me
Correct Dan. I used a larger one in the front (S. cub style) and a J-3 one in the rear. The front one on the fus. I was using had a bushing in the front hole that I just punched out. When I built the new fus. a couple years ago I used the bigger fus. fitting and could use both 3/8 forks.
Dan Gervae
FRIEND
Upper Peninsula of Michigan
https://www.globalplasticsheeting.com/gps-corrugated-plastic-sheets
I just got some of this stuff for my interior....good flame retardant properties, light, easy to work with?.....I'll let you know how easy and durabilty is unknown....I plan to to glue some light material over it for high class looks lol. I should just go around and ask everyone for their election signs....cheap interior. same stuff. I think I'll actually try to burn some first and see what happens.
I just got some of this stuff for my interior....good flame retardant properties, light, easy to work with?.....I'll let you know how easy
and durabilty is unknown....I plan to to glue some light material over it for high class looks lol. I should just go around and ask everyone for their election signs....cheap interior. same stuff. I think I'll actually try to burn some first and see what happens.
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Dan Gervae
FRIEND
Upper Peninsula of Michigan
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?
skywagon8a
MEMBER
SE Mass MA6
Look here for a list. https://www.faa.gov/about/office_org/field_offices/fsdo/grr/
Dan Gervae
FRIEND
Upper Peninsula of Michigan
Just talked to our very own SC.org member Joe Norris, DAR ....He will be available when I need my inspection.....He's from Oshkosh which is only 3 hrs away...His long time ownership and affiliation with Cubs will be to my benefit. I better get cracking and finish her up.
Initial certification can be either a MIDO or FSDO. If using a DAR, no need to talk to the FAA first, just contact the DAR and get all the info from him. DAR-F is MIDO, DAR-T is FSDO. Keep in mind, with a DAR, you pay, while with the FAA it comes out of your taxes.most DARs can fit you in the schedule within a couple weeks, with the FAA it will likely be 6 months or longer before they can get to you.
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Steve Pierce
BENEFACTOR
Graham, TX
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.
reliableflyer
Registered User
Seldovia, Alaska
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?
skywagon8a
MEMBER
SE Mass MA6
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.
skywagon8a
MEMBER
SE Mass MA6
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.
reliableflyer
Registered User
Seldovia, Alaska
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.
supercrow
FRIEND
Smith Pond near Millinocket, Me
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.
