PA-11 firewall and cowling drawings
- Thread starter faciette
- Start date
supercub
MEMBER
Let me check my GPS, gee how'd we ever navigate w
Boot Cowl, engine mount, cowling, windshield are all different. Some tubing where the gas tank on a J-3 is located is different also. PA-11 fuel tank is located in left wing. Front and rear seats were different also. Metal interior panels similar to super cub....those were the major differences.
Longwinglover
Registered User
Charlotte, NC
Sheet metal wise you are asking for drawings of the boot cowl, firewall and top, bottom and side cowls.
I have the Smithsonian J3 drawings and the Northland PA18 drawings. PA-11 parts are NOT included in either. Drawings for these parts are not currently available from the Cub Club.
As Univair does produce these parts, it is clear that they DO have copies, but doubt they would sell them.
It is possible that Clyde Smith, Jr has copies of these drawings, but you would have to check with him.
John Scott
I have the Smithsonian J3 drawings and the Northland PA18 drawings. PA-11 parts are NOT included in either. Drawings for these parts are not currently available from the Cub Club.
As Univair does produce these parts, it is clear that they DO have copies, but doubt they would sell them.
It is possible that Clyde Smith, Jr has copies of these drawings, but you would have to check with him.
John Scott
T. Parsons
Registered User
Nome, AK
I am pretty sure F. Atlee Dodge would have this as they have an STC to change a J-3 to PA-11. Tony
The structure of a J3 forward of the instrument panel is quite different from the 11, as is the shape of the boot cowls, the firewalls, and the engine mounts. An 11 type cowl can be built for a 3, but it is not easy and takes new channels and cheek cowl for installation. To avoid a really goofy looking angle for the top cowl, the PA11/PA17 nosebowl needs to be modified to relocate the crankhaft opening and the cooling inlets.
JimC
JimC
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
Anyone ever find these drawings? I'm looking for info on the cowl attach fittings at the firewall. I can't find a reference in the parts manual. The ones that came with my plane are nowhere near original. Anyone care to share a picture? While you are there, I still am looking for a pic of a cabin heat box in reference to exhaust.
royevansii
Registered User
SLC, UT
Just tried to attach a halfway decent pic of the firewall but it failed. I'll be back at our 11 in a week or so and will take some better ones for you Chris.
royevansii
Registered User
SLC, UT
They do.
Measured from my J3 and PA-11 firewalls.
Also, proposed locations for a pressure cowl J3 firewall that uses a PA-11 top cowl (cheeks and bottom would be custom). Nisebowl would be an inch wider than 11/17 and about the same narrower than a 12.
I don't guarantee the accuracy, and would suggest using them as a basis for a mockup.
Measured from my J3 and PA-11 firewalls.
Also, proposed locations for a pressure cowl J3 firewall that uses a PA-11 top cowl (cheeks and bottom would be custom). Nisebowl would be an inch wider than 11/17 and about the same narrower than a 12.
I don't guarantee the accuracy, and would suggest using them as a basis for a mockup.
Last edited:
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
The 0235 is on the PA11 type certificate. No stc or approval needed.
Posted Using the Free SuperCub.Org Android App!
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
Now that I'm on my laptop:
(6) Lycoming O-235-C
Use actual weight and arm
Eligible on landplane only and when installed in accordance with Piper Dwg. No 12447.
Engine Limits: All operations, 2600 r.p.m. (100 hp)
Fuel: 80 minimum octane aviation gasoline.
Oil Capacity: 6 qts. (-31)
Propeller Limits: (with propeller, Item 10 or 11 only)
Static r.p.m. at maximum permissible throttle setting:
Not over 2450, not under 2250.
No additional tolerance permitted.
C. G. Range: (+12.9) to (+17.3)
Aircraft weight and balance should be checked to determine need for 11¼ lb. ballast at (+179) or limitation to solo from rear seat only.
Placard required in full view of pilot: "All acrobatics, including spins, prohibited."
Props:
10. Propeller - Sensenich fixed pitch metal model M76AM-2.
+24 lb. (-53)
Eligible with Item 311D(6) engine only.
Diameter: Not over 74 inches, not under 72.5 inches.
11. Propeller - McCauley fixed pitch metal model 1C90-LM7249.
+23 lb. (-53)
Eligible with Item 311D(6) engine only.
Diameter: Not over 72 inches, not under 70.5 inches
(6) Lycoming O-235-C
Use actual weight and arm
Eligible on landplane only and when installed in accordance with Piper Dwg. No 12447.
Engine Limits: All operations, 2600 r.p.m. (100 hp)
Fuel: 80 minimum octane aviation gasoline.
Oil Capacity: 6 qts. (-31)
Propeller Limits: (with propeller, Item 10 or 11 only)
Static r.p.m. at maximum permissible throttle setting:
Not over 2450, not under 2250.
No additional tolerance permitted.
C. G. Range: (+12.9) to (+17.3)
Aircraft weight and balance should be checked to determine need for 11¼ lb. ballast at (+179) or limitation to solo from rear seat only.
Placard required in full view of pilot: "All acrobatics, including spins, prohibited."
Props:
10. Propeller - Sensenich fixed pitch metal model M76AM-2.
+24 lb. (-53)
Eligible with Item 311D(6) engine only.
Diameter: Not over 74 inches, not under 72.5 inches.
11. Propeller - McCauley fixed pitch metal model 1C90-LM7249.
+23 lb. (-53)
Eligible with Item 311D(6) engine only.
Diameter: Not over 72 inches, not under 70.5 inches
royevansii
Registered User
SLC, UT
Click the link.
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
If you want the physical blue print: http://univairparts.com/shopping/product_info.php?products_id=7036
skywagon8a
MEMBER
SE Mass MA6
I know a guy in AK who had a J-3. He converted it to a PA-11, installed a 0-235 and flaps, what a tiger! Somehow the 0-235 turned into a 0-320 with a Borer prop. No electrics at all. It also had Hendrix tips, a Cal Center cuff, wing tanks and Gar-aeros.
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
Someone asked me a question about my firewall and it lead me to this thread. This is a little more info for those who continue to reference this thread.
See the angle of the cabin heat box in the picture above? That is VERY important to match the heat muff. Don't mount it straight up and down.
See the angle of the cabin heat box in the picture above? That is VERY important to match the heat muff. Don't mount it straight up and down.
nesincg
BENEFACTOR
Chattanooga, TN (KAPT)
Nope. Glad you posted it: http://www.supercubproject.com/drawings/pdfs/A3310021.pdf
cubdriver2
FRIEND
upstate NY
The cabane holes need to be covered in the middle and new ones cut at the bottom windshield corners.
Glenn
Glenn
Steve Pierce
BENEFACTOR
Graham, TX
PA11 and PA18-95 bootcowl are the same part number. The bootcowlformers on the fuselage are different between the Lycoming and Continentalpower Super Cubs.
