View Profile: BC12D-4-85

Today, 12:18 AM

BC12D-4-85 replied to a thread Carb ice on takeoff, or fouled plugs or? in Super Cub Sick Bay

Now find out why #3 is a leaker? Valve cover removal reveals a stuck valve or ? Good you weren't needing the power. We pull the prop through before...

26 replies | 1115 view(s)

06-11-2021, 01:44 PM

BC12D-4-85 replied to a thread Carb ice on takeoff, or fouled plugs or? in Super Cub Sick Bay

https://www.lycoming.com/sites/default/files/O-320%20Operator%20Manual%2060297-30.pdf See pages 3-10 through 3-18 for fuel flow versus rated...

26 replies | 1115 view(s)

06-11-2021, 12:46 PM

BC12D-4-85 replied to a thread Oops, darn it... in Cafe Supercub

Other opinions/interpretations: https://pilot-protection-services.aopa.org/news/2016/january/15/congested-area...

2321 replies | 604138 view(s)

06-08-2021, 10:20 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

The C-150 seaplane w/ O-200 swinging a 1A90/CF75-35-38 range wants to see 2400 to 2500 static. That Sen AK76-2-40 I can run 2440+-15 static with the...

293 replies | 43040 view(s)

06-08-2021, 08:32 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Best to compare the C-90 to O-200's performance with that AK76 prop. Accelerator pump has three adjustments. See MA-3-SPA Manual for...

293 replies | 43040 view(s)

06-08-2021, 07:15 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Make sure your carb heat is fully off and flapper leakage minimal. Make sure your throttle throw is fully open. Confirm magneto timing is correct....

293 replies | 43040 view(s)

06-08-2021, 07:02 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Please try w/o the air filter as well. The cam and ignition timing of the O-200 is different than for a C-90....made more for higher rpm horsepower...

293 replies | 43040 view(s)

06-08-2021, 03:49 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

I'd fly the AK76 within the specified HP and RPM limits noted on an Experimental aircraft. The major changes between the C-90, C-85 Stroker, and...

293 replies | 43040 view(s)

06-08-2021, 03:33 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Sure. Let's flip a coin. Winner flys the prop? Gary

293 replies | 43040 view(s)

06-08-2021, 02:50 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Yes it's installed on my Taylorcraft now as well (PA-11 w/C90 previously). If not already done try static rpm with your current air filter and then...

293 replies | 43040 view(s)

06-08-2021, 02:24 PM

BC12D-4-85 replied to a thread Building an Experimental PA11 in Experimental Cubs

Dan you might check out TCDS 1P2 for the 76AK-2-40. Sensenich didn't approve that model vibration wise for the O-200. Stated limits are, if I read it...

293 replies | 43040 view(s)

06-07-2021, 07:38 PM

BC12D-4-85 replied to a thread Horizontal has loose wire? in Super Cub Sick Bay

Some of that bracing is likely there to prevent fabric from bending the underlying tubing/channel during heat shrinking. Forms rigid triangles that...

8 replies | 564 view(s)

06-05-2021, 10:19 PM

BC12D-4-85 replied to a thread Gross weight increase for PA-11? in Cafe Supercub

Yes 1350 on floats; still 1220 on conventional gear. Lazy Piper kept it like the earlier J-3. C. G. Range changes depending on engine installed. ...

14 replies | 3816 view(s)

05-31-2021, 11:17 PM

BC12D-4-85 replied to a thread Extending Flap Cord in Modifications

Hmmmm. Interesting. Gary

13 replies | 819 view(s)

05-31-2021, 03:38 PM

BC12D-4-85 replied to a thread Phillips oil question in Cafe Supercub

No not this one but did in the previous PA-11's C-90. It was ok but eventually I went back to W80 Shell as my winter flying declined and I preheated...

6 replies | 419 view(s)

05-31-2021, 02:16 PM

BC12D-4-85 replied to a thread Phillips oil question in Cafe Supercub

You might also consider this product at some additional expense: https://phillips66lubricants.com/product/victory-aviation-oil-100aw/ Same as...

6 replies | 419 view(s)

05-30-2021, 09:56 PM

BC12D-4-85 replied to a thread SPREADING ASHES Question in Cafe Supercub

Excellent. I can't think of a better way to respect the newly departed than fulfilling their wishes...if it involves aerial deployment. A good life...

68 replies | 25644 view(s)

05-26-2021, 09:40 PM

BC12D-4-85 replied to a thread Oil spring on C90 in Piper: PA-18 Super Cub (and L18C & L21)

If examining the engine externally fails to find leaks, then remove the valve covers and examine the intake valves. Pay particular attention to any...

13 replies | 684 view(s)

05-24-2021, 10:01 PM

BC12D-4-85 replied to a thread SPREADING ASHES Question in Cafe Supercub

Double valve - loaded tube - good idea. I used to dump fish (live) from a tank with a double valve set up (two part tank). Pull cables. The valves...

68 replies | 25644 view(s)

05-21-2021, 11:23 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

Ref #82 above: My approximation of lift and drag vs AOA or Alpha was from the traditional graph below. That graph reflects an airspeed of about 47...

93 replies | 9592 view(s)

05-21-2021, 07:57 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

You'll find varying opinions based upon aircraft design and operating goals. I like minimal washout as it gives some more lift, but then I tend to...

93 replies | 9592 view(s)

05-21-2021, 07:23 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

ZZZZZZZZZZZAP! At least we can see the wing and fabric.....electricity and sparks are for the faithful with instruments. RE: Underwing fabric...

93 replies | 9592 view(s)

05-21-2021, 04:05 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

For some fun keep an eye on the fabric between the ribs especially with washout root to tip......how much of the wing's fabric is concave ^ (more...

93 replies | 9592 view(s)

05-17-2021, 06:52 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

Hoerner's lateral "vortex core displacement" must be helping. What's the wing wash now? Great test. I still wonder what would happen if just the...

93 replies | 9592 view(s)

05-17-2021, 04:59 PM

BC12D-4-85 replied to a thread Fun Wing Tip Experiment (uploaded for Skywagon) in Modifications

Nice fun after #68. Only 69 insq but longer span/aspect ratio. How about a view of the tip from the wing's end? Now tuft test lower surface of tip to...

93 replies | 9592 view(s)

05-16-2021, 02:52 PM

BC12D-4-85 replied to a thread Wing Scrape in Super Cub Sick Bay

More than cursory....have someone flex the wing tip while you or A&P examine spars and tip fasteners for compression fractures and cracks. Sometimes...

17 replies | 1518 view(s)

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