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Victor Briley
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  • Johannesburg, MI
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Latest Activity

Bill Skinner commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I added a Video from 1990 in which W. R. Skinner explains a little bit of background on the aileron balance weights. You have to listen carefully as the audio is not very clear with the background noise ...."
Mar 21
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Back in December of 2010, Tom P. was kind enough to post this in the Forum: Porterfield Airplane Mantenance Manual and CP-50/65 Engine Mount Drawing Just click on "Forum," above, and go to page 10 of the forums and you should find…"
Feb 20
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Thank you, Bill!  I'm speculating, but it seems that the CP-50 didn't get the mods for intentional aerobatics because such maneuvers weren't possible with fifty horsepower.  However, when you install an A65 in a CP-50, as…"
Feb 17
Bill Skinner commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"attached are some additional details from my fathers files. note that these diagrams are all labeled "preliminary", and apply to Porterfield 55 and 65 series…"
Feb 16
Bill Skinner commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I was curious, so i began looking through my father's old paperwork and found the following: Airworthiness Bulletin No. 81-B dated June 20, 1944 Models CP-55, CP-65, CS-65, FP-65, LP-65 Subject: Instructions Covering Changes Necessary to Lift…"
Feb 16
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"You can find the TCDS here:       http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/B0BE53CD6641BC338525673D0055D3CA?OpenDocument or maybe you can open this attachment: TC690.pdf The later Collegiates…"
Feb 16
Victor Briley commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Andy, I just got off the phone with Tim Talen looking for info. on aileron and elevator travel specs and aileron stops. I don't see any aileron stops on the old wings. Is that incorporated into the control stick? Were there ever mechanical…"
Feb 15
Bill Skinner commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I vaguely recall my dad saying that someone stupidly exceeded red line in a dive and the ailerons fluttered and ripped off. And as i recall my dad mentioned that the FAA did issue a notice for these... I don't know what the notice was, or if a…"
Feb 10
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I don't recall any wash-in/wash-out being  built into the wings, Victor.  They're built flat and then  rigged on the fuselage by screwing in/out the fork on the rear strut.  I have the original rigging procedure that I…"
Feb 3
Victor Briley commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Hi Andy, Yes I did get the drawings. Thank you very much. I just spoke with the A&P/IA that is working with me on building the new wings. He says I need the rigging procedure to build the washout into the wing before I nail the leading edges…"
Jan 24
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Did you two ever receive the drawings I emailed you a few weeks ago?  If not, check your junk mail folders. Andy"
Jan 7
Andy Gelston commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I fabricated new wing struts for 41VT and had to substitute 4130 for the original 1020 streamline tubes.  It required a field approval and so I had to create a table comparing the specs for 1020 in the Metallic Materials Properties Development…"
Dec 29, 2017
David G Reichard commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
Dec 26, 2017
Joseph B. Stanistreet commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"I am in process of removing wing fabric, have head knockers and associated drawings and specs. I will dig the out. Andy, i am very interested in seeing the seaplane mods PDF for the wings and the fuselage. jbarrystan@yahoo.com"
Dec 26, 2017
Victor Briley commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"The 1949 AD specifies .049 -  1025 steel. Is 1025 an old spec that has been replaced with 4130? Aircraft Spruce does not have 1025 steel in their catalog."
Dec 25, 2017
Victor Briley commented on Victor Briley's blog post Question about Headknockers - aileron balance weights
"Thank you David and Andy for your input. David, I spoke with you at Osh Kosh last July and it was your plane that I noticed the headknockers on. Andy, I would appreciate it very much if you would email the PDF's to me at vicbriley@frontier.com…"
Dec 25, 2017

Profile Information

About Me:
I applied earlier and am waiting for approval. My email address has changed so I thought I should reapply in case you try to contact me.
Do you own a Porterfield Airplane?
1940 Porterfield project that I got from BeBE Owen in Florida. This used to be my father's airplane. I am anxious to restore it and could use some guidance from some of your members.
Are You a Pilot?
Private pilot
Do you have a MYSPACE profile, email address or personal website that you would like to share with others?
http://Facebook page under Victor Briley

Victor Briley's Blog

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…

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Posted on December 20, 2017 at 9:32pm — 18 Comments

WANTED CP50 MANUALS & BLUEPRINTS

I am in the process of restoring a 1940 CP50 and could use some manuals and blueprints if anyone has them. Are there any Collegiates in Michigan?

 

Vic Briley

989-614-0891

Posted on August 12, 2013 at 9:34pm — 1 Comment

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At 2:28pm on May 31, 2013, Tom Porterfield said…

Victor

Welcome to our Porterfield Club on-line. Make sure you share some pictures with us. It's good to have you aboard.

Tom Porterfield

 
 
 

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