Warbird Information Exchange

DISCLAIMER: The views expressed on this site are the responsibility of the poster and do not reflect the views of the management.
It is currently Fri Mar 05, 2021 2:49 pm

All times are UTC - 5 hours


Classic Wings Magazine WWII Naval Aviation Research Pacific Luftwaffe Resource Center
When Hollywood Ruled The Skies - Volumes 1 through 4 by Bruce Oriss


Post new topic Reply to topic  [ 3305 posts ]  Go to page Previous  1 ... 182, 183, 184, 185, 186, 187, 188 ... 221  Next
Author Message
 Post subject:
PostPosted: Thu Feb 21, 2008 9:00 pm 
Offline

Joined: Wed Mar 07, 2007 3:48 am
Posts: 175
Location: Federal Way, WA.
Scott,

Whatever you think bad about the cowl flaps, I second it. I have worked on both Ol'927 (when she was Diamond Lil) and the PBY Sea Bitchand they are both pieces of C**P.

RICK


Top
 Profile  
 
 Post subject:
PostPosted: Fri Feb 22, 2008 10:11 am 
Offline
Co-MVP - 2006
User avatar

Joined: Fri Nov 18, 2005 10:39 am
Posts: 4468
Location: Midland, TX Yee-haw.
Yeah, poor Scott has been mumbling dirty words to himself all week as he's been messing with those things. I feel bad that I can't take the time to go out and help him with them now....but not THAT bad. :D

He's been a great help to the B-29/B-24 Squadron and we all certainly appreciate it.

Gary


Top
 Profile  
 
 Post subject:
PostPosted: Sat Feb 23, 2008 7:34 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Mar 24, 2005 10:10 pm
Posts: 4173
Location: Pearland, Texas
Gee Gary now that you are an executive, do you look out the window and yell WORK FASTER ! over the P.A. ? :shock: :lol:

_________________
"You cannot invade the mainland United States. There would be a rifle behind each blade of grass..."
Admiral Isoruku Yamamoto


Top
 Profile  
 
 Post subject:
PostPosted: Sun Feb 24, 2008 10:09 am 
Offline
Co-MVP - 2006
User avatar

Joined: Fri Nov 18, 2005 10:39 am
Posts: 4468
Location: Midland, TX Yee-haw.
RickH wrote:
Gee Gary now that you are an executive, do you look out the window and yell WORK FASTER ! over the P.A. ? :shock: :lol:


No, I typically look outside and hear the echos as I yell, "Hello? Hello? Hello?" Other than Scott this past week (which is a huge help), there is rarely anyone around the airplane. :roll: :? It sucks and is frustrating, for sure...but there's just not much I can do about it. The Squadron's Maintenance Officer, Don Obreiter, has been working hard to find a new Crew Chief, so maybe they'll have someone here full time soon.

Gary


Top
 Profile  
 
 Post subject:
PostPosted: Sun Feb 24, 2008 10:23 am 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Mar 24, 2005 10:10 pm
Posts: 4173
Location: Pearland, Texas
Yeah, I'll bet that's frustrating. Well, with the move to Addison maybe it will be easier for the volunteers to get there to help. Probably pick up some new ones , too.

_________________
"You cannot invade the mainland United States. There would be a rifle behind each blade of grass..."
Admiral Isoruku Yamamoto


Top
 Profile  
 
 Post subject:
PostPosted: Sun Feb 24, 2008 12:58 pm 
Offline

Joined: Wed Mar 07, 2007 3:48 am
Posts: 175
Location: Federal Way, WA.
Gary,

Is there a posting published anywhere with the job description for crew chief? Some detailed information about the requirements and expectations might help people decide to apply or not.

RICK


Top
 Profile  
 
 Post subject:
PostPosted: Sun Feb 24, 2008 1:07 pm 
Offline
Co-MVP - 2006
User avatar

Joined: Fri Nov 18, 2005 10:39 am
Posts: 4468
Location: Midland, TX Yee-haw.
b17engineer wrote:
Gary,

Is there a posting published anywhere with the job description for crew chief? Some detailed information about the requirements and expectations might help people decide to apply or not.

RICK


I had it posted on Barnstormers.com for a while, but I just heard from Don and they will likely be making a decision on a new guy in the next day or so. Stay tuned.......

Gary


Top
 Profile  
 
 Post subject:
PostPosted: Thu Feb 28, 2008 12:17 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Sep 28, 2006 12:56 pm
Posts: 3442
Location: North of Texas, South of Kansas
Here is that ^#%&@ cowl flap update I promised several days ago, and Rick, I'm always glad to find someone else who has had the pleasure to tinker with these devices. :twisted:

First of all, if Gary did a pictorial on the cowl flap set-up last year I apologize for repeating it. All four cowl flap assemblies were completely dismantled, stripped of paint and oil, reassembled, and painted last winter during the reconfiguration. Unfortunately, we wanted to refurbish all the hinge bushings then as well, but time didn't allow that to occur. Well, time didn't allow that rebushing to occur this winter either. :x Now, on to the task at hand:

Consolidated's engineers actually designed a rather ingenious interlocking cowl flap arrangement that works quite well. With the high number of hours on '927 we have an issue of sloppiness due to (more-or-less) normal wear. The cowl flaps, and cowlings in general, spend their entire life in the most turbulent airflow on any airplane. Propwash hits the outside of the cowl flaps and varies in strength depending on power settings and cowl flap position. Cooling airflow through the cowlings and across the cylinders exits through the cowl flap openings in another turbulent mass that impinges on the inside of the flaps. With all that air hammering on both sides of the flaps, it's a wonder that the whole affair doesn't just fall apart after a short time. Now for some pictures and a little description of what I did (and didn't have time to do :? ) last week:


Image
This is the complete #3 flap ring awaiting inspection, repair, and reinstallation. Doesn't really look too complicated, and it really isn't after you've tinkered with them for a while.


Image
This is the Erector Set for #1 in a somewhat more dismantled state. I'll use the following pictures to try to explain how the flaps work and why they wear the way they do.


Image
Here is the interface and hinge connection that exists at each of the eight segments around the cowling. The flap segments pivot open and closed on the bolts with safety wire securing them. The angled connection with the castellated nut and bolt in the center is the actuating arm. The new bushings we need to fabricate and install are located at each of these four hinge points on each flap segment.


Image
This is the actuating rod set-up disassembled. you can see where the shaft of each connector slides in the flap bushings.


Image
Here is the connecting linkage in the process of being connected, you simply :shock: slip the two halves into their sockets, maneuver the flap segments into position, and install the bolt, washers, nut, and cotter pin. (This really sounds simpler than it is, right Rick?)


Image
And this is a completed assembly. The hinge bolts are installed, the pinch nut that you can't see is tightened and then safety wire is applied. The actuating connectors are installed and safetied, and the actuating rod from the cowl flap motor linkage is hooked to the bracket on this particular flap pair. Another identical linkage is connected on the other side of the nacelle, and these two connections move the flaps open and closed via a system of electric motor, gearboxes, and teleflex driveshafts. After everything is connected it's a relatively simple matter to rig the left and right halves to work in concert with one another. The difficult part is keeping everything from getting too sloppy and not staying synchronized, and that is what takes lots of time. Hopefully we will be able to fabricate and install all new bushings next winter and finish tightening up all four assemblies. Until then, the flaps are in pretty good shape with just a touch more play than we'd like. The aggravating part of cowl flap maintenance is the inordinate amount of time it takes to inspect, repair, and assemble all the parts of each assembly. I lost track of time, and worked on some other pressing projects as a way to take a break from the flaps, but still spent about 15 hours per engine and we haven't started on #3.

Scott


Top
 Profile  
 
 Post subject:
PostPosted: Thu Feb 28, 2008 2:44 pm 
Offline
2000+ Post Club
2000+ Post Club
User avatar

Joined: Mon Feb 13, 2006 9:42 pm
Posts: 2618
Location: NP, NJ, USA
Thanks for the update Scott.

_________________
Share your story: Rutgers Oral History Archive http://oralhistory.rutgers.edu/


Top
 Profile  
 
 Post subject:
PostPosted: Thu Feb 28, 2008 3:00 pm 
Offline

Joined: Wed Mar 07, 2007 3:48 am
Posts: 175
Location: Federal Way, WA.
Oh, I was SOOOO hoping you would get to the jack screws that drive the cowl flaps. They are so much fun.

RICK


Top
 Profile  
 
 Post subject:
PostPosted: Thu Feb 28, 2008 3:36 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Sep 28, 2006 12:56 pm
Posts: 3442
Location: North of Texas, South of Kansas
Rick,

I couldn't put power on the airplane because of other issues, so I never got around to ops checking the drives. They'll get everything rigged once they get electricity, and maybe someone will get into the rest of the system operation then.

Scott


Last edited by Second Air Force on Sat Mar 15, 2008 7:37 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Sat Mar 01, 2008 9:37 pm 
Offline
User avatar

Joined: Sat Sep 24, 2005 6:36 pm
Posts: 917
Location: Valparaiso, IN
I checked out the CAF B-29/ B-24 website and found these confirmed tour dates:

April 8-13 - Lakeland, FL
May 16-18 - Andrews AFB
June 14-15 - Akron, OH
July 28-August 3 - Oshkosh, WI
August 8-10 - Ypsilanti, MI
August 23-24 - Indianapolis, IN??
August 30-31 - Red Wing, MN
September 20-21 - Midland, TX

_________________
"Keep 'em Flying!"


Top
 Profile  
 
 Post subject:
PostPosted: Fri Mar 07, 2008 1:43 am 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Sep 28, 2006 12:56 pm
Posts: 3442
Location: North of Texas, South of Kansas
Tulsaboy found a cool pair of photos of Ol'927 in her first civilian job, and I thought it appropriate to link his thread over here:
http://warbirdinformationexchange.org/p ... 753b317f3a
Image
Image
Image

Heck, here are both photos along with a great color shot compliments of Swiss Mustangs.


Thanks to Kevin and Martin!
Scott


Last edited by Second Air Force on Thu Apr 17, 2008 9:31 am, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 12, 2008 11:20 am 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Thu Sep 28, 2006 12:56 pm
Posts: 3442
Location: North of Texas, South of Kansas
Since it's been so quiet on this thread (and I suspect in the hangar as well :cry: ) I'll try to give you all a remote update of sorts.

Daniel Collier was at Midland last week and hopefully made more forward progress than I did my last visit. There is (or was the last I heard) a bit of a hang-up with one of the engines that needed to be resolved, and it may take a little time to get that straightened out.

The main reason I decided to post this was to thank everyone for still visiting this thread even though they don't have much to add right now. I never paid any attention to the hits counter till last week, and I was astonished to find that there have been almost 2500 hits since noon last Thursday. I don't presume to speak for Gary and Andy, who put in so many hours last year on the reconfiguration, but for Ellen and I and the other volunteers that tried to contribute it feels good to know that you are still interested.

THANK YOU!


Last edited by Second Air Force on Sat Mar 15, 2008 3:18 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 12, 2008 11:29 am 
Offline
Co-MVP - 2006
User avatar

Joined: Fri Nov 18, 2005 10:39 am
Posts: 4468
Location: Midland, TX Yee-haw.
Although I don't get to work on the airplane as much as I used to, I have designed a new system for the pogo, on the belly of the airplane. It will be a manual system, to eliminate the problematic aftermarket electric/hydraulic system that was installed in the airplane many moons ago. Daniel listened to my idea, and as usual, did a great job of building the components necessary to make it work. He simply ran out of time before completing it, but will try to be back again this weekend to finish it up. It's a simple, but neat little system that should eliminate the airplane ever sitting back on it's tail like it did (due to my mistake :oops: ) this past season.

I'll try to get pictures of the completed system when able.

Gary


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3305 posts ]  Go to page Previous  1 ... 182, 183, 184, 185, 186, 187, 188 ... 221  Next

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group