Porterfield Airplane Club

Keep the Skinny Birds Flying Safely

Andy Gelston
  • Male
  • Grantham, NH
  • United States

Andy Gelston's Friends

  • Allen Self
  • Chris Maley
  • David G Reichard
  • Perry M Chappano
  • Steve Sharpe
  • John Bentley
  • Tom Porterfield

Andy Gelston's Discussions

Type Certificate A-720 now owned by Brad Rankin
2 Replies

Looking in the FAA database, I see that as of 03/08/2017, Bradley Rankin now owns the type certificate.  He inherited it from his Dad, Joe, who passed away last fall.  He hasn't transferred ownership…Continue

Started this discussion. Last reply by Andy Gelston yesterday.


• 0 SMOH O145-B2 overhauled by J.P. Hackenberg Aviation with logbooks for sale -$11,500 plus shipping. Mags overhauled by Savage Magnetos. • Contact Perry M. Chappano - POLESTAR, INC., Owner -…Continue

Tags: sale, for, Lycoming

Started Jun 24

John Bentley's Collegiate project is posted on Barnstormers.com

PORTERFIELD 1941 • $13,000 • AVAILABLE FOR IMMEDIATE SALE • 1941 CP65 Porterfield project for sale, Fuselage…Continue

Started May 17

LP-65 for sale on Barnstormers

1940 PORTERFIELD LP-65 • $17,500 • FOR SALE BY OWNER • 1940 Porterfield LP-65. Newly restored. TT: Unknown.…Continue

Started Mar 20


Andy Gelston's Page

Latest Activity

Andy Gelston left a comment for Mike Austin
"Hi Mike: Welcome to our wee club for the skinny birds! If you are over 6' tall and/or 180 pounds, you may find the Collegiate's cockpit  a bit claustrophobic and not at all comfortable to fly in. There was a Collegiate project in the…"
13 hours ago
Andy Gelston replied to Andy Gelston's discussion Type Certificate A-720 now owned by Brad Rankin
"Yes Perry, he was for me, also! I had many wonderful phone conversations with him over the years. Hopefully Brad will get the drawings, etc. sorted out and be able to supply them as we need them for our restorations."
Perry M Chappano replied to Andy Gelston's discussion Type Certificate A-720 now owned by Brad Rankin
"Sorry to hear Joe passed. He was very helpful to me after I bought Ailsa - NC32372."
Andy Gelston replied to Mark's discussion How many flying?
"Ha!  If you read my travel story in the blog section: http://porterfieldplane.ning.com/profiles/blogs/nc41vt-is-coming-back-to-vermont you'll get so much of my style it will put you to sleep!"
Aug 17
Andy Gelston replied to Mark's discussion How many flying?
"Oh yes, Mark, and if they ask, "is that a Champ...or a Funk...or an Interstate Cadet?",  I always respond with, "that's a good guess, but look again at the parallel wing struts and the shape of the tail.  She's a…"
Aug 15
Andy Gelston left a comment for Herb Brayton
"Welcome to our wee club devoted to the skinny birds! Thank you for doing your part to keep the skinny birds flying, safely. Andy"
Aug 12
Andy Gelston replied to Mark's discussion How many flying?
"I also read that and agree that it does seem low, but it may be more accurate than we'd care to admit. About 14 years ago, I created a spreadsheet for Chuck LeBrecht with all the Porterfield and American Eagle aircraft still in the FAA…"
Aug 10
Andy Gelston replied to Joel E. Harris's discussion C85 conversion
"You're partially correct, Trevor, in that the C75 & C85 are very similar, with a few critical exceptions.  The connecting rods in the C85 are drilled and the pistons have more rings than the C75 to safely allow the 300 higher RPM the…"
Aug 8
Andy Gelston left a comment for Clint Murphy
"We welcome you and ol' S/N 703 to the club for skinny birds!  Please share with us any adventures, advice, and lessons learned from your LP-65.  Did you recently buy her from David Butler?"
Aug 3
Andy Gelston commented on Mark's blog post LP 65 hub caps
"It depends what wheels you have. The Shinns were designed to be so stylish that no one would ever think of covering them up...but beauty is in the eye of the beholder."
Jul 27
Andy Gelston left a comment for Olivier Duque
"Bonjour, mon ami: I was looking at your nice Tumblr page and noticed the weight and balance report has three pages, but page 3 is a duplicate of page 2. Is there a page 3 in the original report? Débarquements doux, Andy"
Jul 13
Andy Gelston commented on Marcia Mason's blog post questions about the Collegiate
"The type certificate places the datum at the leading edge of the wing; the CG range is +10.5" to +19.9"; and the empty weight CG range is +15.8" to +16.4"  The type 2 landing gear is at -1" and the tailwheel is at…"
Jul 13
Andy Gelston replied to Kyler Dinger's discussion Flying with the door off.
"That's one of the advantages of old, somewhat obscure airplanes, like our Collegiates: most people don't even know what she is, let alone whether or not she can be flown with the door off!  Since the door is located so close to the…"
Jul 12
Andy Gelston commented on Marcia Mason's blog post questions about the Collegiate
"Why is the Collegiate so skinny?  The original design, the Wyandotte Pup, was for a high school shop project and all the parts, especially the fuselage, had to fit through a 32" wide door frame to be moved out of the shop.  Ed…"
Jul 9
Andy Gelston commented on Marcia Mason's blog post questions about the Collegiate
"You can find original factory W&B sheets here: http://www.porterfield-turner.net/page/25 Thanks to our member in France, Olivier!  Just scroll down a bit and you'll see it in the center of the page.  There are three pages to the…"
Jul 9
Andy Gelston replied to Kyler Dinger's discussion Flying with the door off.
"The previous caretaker of your wee lass sent me copies of all the paperwork he had relevant to the float installation. I don't recall anything mentioning the door being removed. There's no Minimum Equipment List for the Collegiate, so…"
Jul 4

Profile Information

About Me:
Enough about me, let's talk about you...
Do you own a Porterfield Airplane?
NC41VT, 1941 FP-65, S/N 875 Has a Franklin 90 installed by Angelo Forte, under a one-time STC, in the mid-50's, and has had the seaplane conversion done to it (would that make it a FS-90?). I just need a cheap set of Edo 1320's now!
Are You a Pilot?
Why yes, I fly...

Andy Gelston's Photos


Andy Gelston's Blog

NC41VT and I are now back home in Vermont! How we got here...

I'm sitting in KMHT, writing this while waiting for my flight which should be wheels up in about 10 hours.  I fly to Newark, then to Seattle, then to Great Falls, and should be wheels down at KHLN about midnight (about 31 hours from now).  Hey, I live in New England!  We can't get anywhere from here!  41VT is at Boulder (K3U9) Airport, about 25 miles south of Helena, MT.  I'll buy a used bike  Wednesday morning (I hope), and pedal on down to Boulder to start prepping myself and 41VT for our…


Posted on October 14, 2013 at 6:30am — 2 Comments

Ad for NC41VT, a FP-65 converted to a FS-90

DESCRIPTION: NC41VT is a 1941 FP-65, S/N 875, with an STC’d Franklin 90 installation, completed by Angelo Forte in the mid-50’s, turning a Flottorp wood prop.  She has fresh Polyfiber covering and finish with the factory red and silver color scheme (ball with 2 stripes on each side).  Medium weight fabric was used throughout, with heavy weight fabric used on the belly and lower surfaces of the horizontal stabilizers and elevators.  The instrument panel is the deluxe version, made to…


Posted on July 23, 2013 at 9:30pm

Update on my '41 FP-65 project

After tinkering for over three years on my Collegiate, the novelty finally wore off for Pokey Gordon and he asked me to remove the old girl from his shop in Helena, MT.  Club member Tim Talen, who has a hangar in Boulder, MT, about 30 miles south of Helena, came to the rescue and arranged for a Boulder friend of his to rent a truck and haul the project to his hangar. 

Tim's is a master restorer who specializes in Interstate Aircraft.  I restored an Interstate Cadet back in the 80's…


Posted on April 12, 2013 at 1:00pm — 5 Comments

Seen on Barnstormers: 1940 PORTERFIELD CP-65 for $25K

FOR SALE • 1940 PORTERFIELD CP-65 Collegiate $25,000 LSA Qualified. First Collegiate 499.9 SMOH. 5519.1 TT. Hangered since restoration in 1967. Flying Airplane. All logs Books available on PDF. Current annual good to 01/31/2014. Located at AJO. Corona municipal airport, CA USA. Telephone: Contact Eric 951-247-9541 • Contact…


Posted on March 3, 2013 at 1:10pm — 1 Comment

Comment Wall (8 comments)

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At 11:45am on April 8, 2017, Jim Mullin said…
LeRoy was more than generous with his time. I hope I remember a good portion of the information he's shared. I spent two days up there and almost countless phone calls. I have a hanger and feel a privilege and responsibility more than ownership. I have a daughter in Brooklyn so there's a good chance we could meet in the next year.
At 5:50pm on March 24, 2017, Bradley said…

Im interested in the historic role of the Porterfeld as chase plane and filming platform for the 1st manned rocket flight (Ercoupe) at March Air Field in September 1941.

The pilot who made the flight was a good friend, Captain Homer Boushey who at the time worked at Wright Field. Would value any information from anyone as to exact model of Porterfield, engine type, manuals for the type, prop, markings et al. 

I would like to find a Porterfield with the exact specs. as the one used (there is footage showing it) to purchase and re-enact this historic event.  If your club owner/operators could educate me on that exact model that would be fantastic.

Thank you all for keeping aviation history alive.

All the best-


At 9:10am on March 17, 2010, Mark Lawrence Storey said…

The encoder is actually remote from the radio panel, I made a "trap door" in the right side cabin wall just below the upper longeron and just behind the instrument panel. The encoder is mounted on the back side of the trapdoor. The altimeter, airspeed and encoder static ports a r connected together and vented behind the instrument panel through a .032 dia. orifice to reduce "gauge flutter" The wiring connections between the encoder and TXPDR are routed up the right side rear edge of the windshield just ahead of the door frame.

FYI, I recall recently seeing an ad by Microair for a low power consumption TXPDR, that would be worth investigating if you a re planning to use total loss battery power system.
Let me know if there's anything more I can help out with
At 10:01pm on March 15, 2010, Jerri & Chris Bergen said…
Andy, Yes the wheel pants on my CP-65 are original. I'm extremely fortunate to have picked-up a Porterfield that has been restored to, what I believe, is as close to original as you can get. Fred Hollaway is the gentleman that did the restoration in the late 70's. To give you an idea of the detail Fred went to, he braided all of the control cables in the original fashion with a waxed cotton twine wrap. Just one example of many that make NC37895 very special. She fly's like a dream as well.
At 7:20pm on March 15, 2010, Judy Birchler said…
Well, it's got a big tail but a C90-12F so it's got a starter and a generator. Yeah, no more propping for me!
At 10:45am on March 14, 2010, Mark Lawrence Storey said…
My craft is registered in Mexico, since they absolutely require comm. and XPDR I simply added them with out saying anything to anybody. I chose Microair 720 ch comm. and XPDR / King encoder as they were the lightest smallest lowest powered combination I could find as of 3yrs ago. Power is supplied via 7 amp hr sealed lead acid battery mounted on the cabin side of fus station #1. Everything works well with good TX/RX and virtually no engine ignition noise. Ingntion system is shielded type.

The installation required modification to the right wing root to pass the equipment through from the cabin. In the U.S. this of course would require an STC or onetime field approval, the Mexican DGAC (equiv to FAA) never thought to ask so I didn't tell, if they had it would have been impossible as they would have required Porterfield factory engineering approval, so you see where that would have gone! If your interested I can send you some photos of the istallation and a wiring diagram. Before retiring I was an electronics engineer for 32 years.
My email is: marklstorey@hotmail.com
At 4:32pm on October 23, 2009, Tom Porterfield said…
I think that would be Kent Pramhus' Little Blue and Silver Porterfield. It is a beautiful airplane. He was one of the first members here. It is at Cable Airport in California. There are 3 Porterfields at that airport. I think the airport has a web site, I think it is www.cableairport.com and also www.foothillaircraft.com
There are pictures of it under used aircraft on the Foot Hill site.

At 9:44pm on October 22, 2009, Tom Porterfield said…

Welcome to our Porterfield Club. We are glad to have you join us. Hope we can all benefit each other with technical info on the Porterfields and build lasting friendships. We look forward to pictures of you and your airplane.


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