Porterfield Airplane Club

Keep the Skinny Birds Flying Safely

All Blog Posts (61)

Rubber shock absorbers for sale til we run out. Not making more once they are gone

Our absorbers (on N37716 CP-65) were getting pretty worn out so we ordered a sheet of rubber and had as many absorbers as we could cut out of it.  We have extras sets that are pre cut.  Email Darrylmeii@yahoo.com, Mielke1991@yahoo.com or call 605-252-0256 and ask for Darryl or Shawn if you have any questions. Thanks 

Added by Shawn Mielke on February 26, 2018 at 1:00pm — 1 Comment

Question about Headknockers - aileron balance weights

I have a 1940 CP50 that I am restoring from the ground up.  I  built new ailerons and transferred the lead weight from the old aileron to the leading edge spar of the new aileron.  While in Osh Kosh I saw a LP65 with headknockers for balance weights. My CP50 was not equipped with headknockers. I searched for AD's but could not find any for the CP50. Does anyone know if the headknockers was an STC or some other add-on? My ailerons are quite heavy at the trailing edge. I have always been told…


Added by Victor Briley on December 20, 2017 at 9:32pm — 17 Comments

G-AFZL in the wars again

ZL suffered another nose over incident at the end of August. This time it was Paul, he forgot to reset the throttle starting the engine after blowing out, resulting in the engine revving up at the next swing and the aircraft nosing over the chocks. Luckily the prop missed Paul, but buried itself in the grass. We sent the engine away for a shockload examination and fitted a new prop. No other damage luckily and she's now signed off again, although the weather has turned damp and cloudy, so…


Added by Steve Sharpe on October 24, 2017 at 5:31am — 3 Comments

LP 65 hub caps

Hello, I've heard that L5 Hub caps will work on the Porterfield. Anybody have any ideas of others that might? I think they would look sharp on our old girl. Thanks Mark NC27249

Added by Mark on July 24, 2017 at 1:42pm — 2 Comments

questions about the Collegiate

Was there ever an STC for electric start on the Collegiate?  (LP or CP)

Is there any guidance on putting in a radio/xpdr/ elec. sys?

Can someone please measure the interior space for the pilot seat area?  Width.  I'm worried I'll be jammed in.  "Skinny" is not me.

I'm a large person and have been considering buying one, but I'm worried I won't fit in it.

Is there any seat fore-aft adjustment?

Can someone send the W&B chart to me?

What are the…


Added by Marcia Mason on June 22, 2017 at 11:29am — 8 Comments

Firewall attach angle on engine mount

Anybody remove angle attachment on engine mount?
I would like to use different method of attaching firewall to
Engine mount

Added by William A Collins on May 22, 2017 at 2:45pm — 2 Comments

I have completed restoration of a 1940 LP-65 Porterfield. It has been flown twice. I restored it as a favor to a late friend and his son. I never intended to keep it. One plane, a Cessna-172, is enou…

I have completed restoration of a 1940 LP-65 Porterfield. It has been flown twice. I restored it as a favor to a late friend and his son. I never intended to keep it. One plane, a Cessna-172, is enough for me. I am hoping to recover my restoration expenses. Continue

Added by Hal Wyborny on December 30, 2016 at 10:28am — 2 Comments

WANTED: Speed Ring Blueprints for 1936 35-70

Give me a call if you know how I can obtain a set of speed ring blueprints for my 35-70 Porterfield ... (Leblond engine).    Howard Coombs 407-539-4324 or howardgin@bellsouth.net.  Thanks!

Added by Howard A. Coombs on August 2, 2016 at 9:42am — 1 Comment

Fabrication Drawings

Hello All,

I would like to secure fabrication drawings for the main landing gear and motor mounts for Franklin and Lycoming 65 hp. engines. Thanks

Best Regards


Added by Bob Hayden on July 4, 2016 at 2:26pm — 1 Comment

Porterfield Formation flight to Ottumwa!

We're excited to post the plans for our 3-ship Porterfield flight from Cable Airport (CCB), Upland, CA to Ottumwa, Iowa, for the Antique Aircraft Association flyin, over Labor Day weekend.

We'll leave here with our 3 Porterfields  (1940, 1941 Collegiates, and a CP 75) around August 25th, and plan to arrive at Ottumwa August 30th.  We're…


Added by Jerri & Chris Bergen on July 3, 2016 at 7:35pm — 2 Comments

CP65 651

Hi guys, I'm very happy to be here as my Dad and I are the new care takers of CP65 651. We recently aquired her and just completed an extensive annual as she had not flown in several years as her previous caretaker has passed away. I have put several hours on her the past week. What a fabulous airplane to fly. The fabric is still in good shape and will allow us a year or so to enjoy the airplane as it is. We will eventually do a full restoration and will be looking here for advise. Our goal is… Continue

Added by Chris Yates on January 24, 2016 at 9:12pm — 3 Comments

NC25577 on Wikipedia

Today (28 Dec) Porterfield NC25577 appeared on the main page of Wikipedia, as supporting cast in the Ercoupe RATO picture taken at March AFB in 1941. N25577 is listed on the FAA register to a balloon, so what happened to the Porterfield?

ZL flying again with new tailwheel spring and rudder horn - obtained via Ebay from the USA, new old stock.

Added by Steve Sharpe on December 28, 2015 at 6:14am — 2 Comments

Rudder tailwheel steering yoke

Hi everybody

The ongoing saga of G-AFZL - Today the tailwheel spring broke while taxying. Luckily at base, on grass. No collateral damage to the rudder/tailpost or fabric. Trouble is the aluminum yoke for the tailwheel springs is now in 3 pieces. I doubt if it is repairable. Does anybody have, know about, know where we can get a replacement? Looks like we may be grounded again for a while, pity as ZL has been flying very well for the past year since the rebuild and given us no…


Added by Steve Sharpe on November 20, 2015 at 1:41pm — No Comments

Landing Gear Rubber

I recently replaced the landing gear rubber on our 1940 LP65. The old ones were cracked and sagging and in dire need of replacement. I talked with Leroy Blum about this via the telephone, and he was very informative. I acquired the rubber stock from L.A. Rubber at a reasonable cost. On this website, I found a link to a photo of the original blueprint showing the proper dimensions (diameter, square hole size, and radius of corners) Near our airport, Arlington Municipal (AWO), I found an… Continue

Added by Mark on October 12, 2015 at 10:22pm — 2 Comments

New Member w/ Questions (FP-65)

Hello All.  I'm just joining.  I have an opportunity, but not yet committed, to restore an FP-65 (N34711).  It would be my first restoration attempt.  I don't even know what I don't know. . . if that makes sense.  I'm trying to make a decision whether I want to commit.


As near as I can tell, the fuselage is in good shape.  The rudder, horizontal stabilizer and elevators are in good shape.  Nothing is covered.  I have the landing gear and wheels and one set of shock discs…


Added by Chris Maley on October 5, 2015 at 9:08am — 3 Comments

Plane for Sale on Main Page

I was looking at the planes for sale on the Main page and noted a blue PC for sale.  I can find no date on the ad except an annual of 2009 so I assume it is at least 6 years old.  (If this is wrong, let me know.) I can find no N number so my question is what happened to the plane, who bought it  or (really a long shot) is it still for sale?


Added by Bill on June 29, 2015 at 8:53pm — 2 Comments

G-AFZL awarded Permit to Fly following rebuild

Good news. Yesterday ZL got its Permit to Fly, so after nearly 19 months we're airborne again. Thanks to everyone who offered advice and assistance during the rebuild. Subject to the usual variable British weather Paul and I can now put on some hours to run the engine in. We had a misfiring problem at idle for a while, caused by failure in one or more of the brand new plugs! Engine now seems to be running smoothly, although with the new exhaust system it does seem a bit noisier than the old…


Added by Steve Sharpe on January 16, 2015 at 12:51pm — 1 Comment

ZL flies again

CP50/65 G-AFZL has flown again following rebuild, at White Waltham on Monday 27 October. No snags, but a bit of tweaking required. 3 hour's of engine proving is required before Permit renewal test flight. Weight issue still to be…


Added by Steve Sharpe on October 29, 2014 at 4:43am — 2 Comments

Help required - aircraft empty weight

Hi All,

Our CP50/65 G-AFZL is ready to fly following rebuild, trouble is we have a weight problem! It looks like we've gained over 100lbs in empty weight over the factory figure, which will mean that we might only be able to get her certificated as a single seater or have severe restrictions on payload (a good excuse to lose some personal weight maybe).

I find it difficult to see how we could be 100lbs overweight, although I do realise aircraft do gain weight over the…


Added by Steve Sharpe on October 12, 2014 at 6:04am — 2 Comments

starters for non electrical engines

We are STC'D and PMA'd to put a battery operated starter on the porter field and several other planes.

They must have an impulse coupling to operate correctly..

Added by Harold Hamp on September 26, 2014 at 8:01am — 3 Comments

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