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CARF F4U-1 Corsair build thread

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Old 08-24-2011, 04:11 AM
  #76
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: didiwatt

I loved to fly my Corsair but always dreaded landing it due to gear failure (ripped off doors 4 times) so I passed the airframe on to a good friend for 0 cost. We are both very experienced modelers.

After workin over the gear for the umteenth time, it failed on him on a greased landing. He emailed Andreas and was told that after many complaints of gear failure and ripped off gear doors Comp-Arf has agreed to have the landing gear re-designed.

Please direct your questions and concerns to Ray Labonte. The more inquiries, the faster the job will get done. Not having a positive lock on a 60lb airframe (not to mention a hugh investment) is insane.......................

Going the Locked & Down conversion may be the way to go............... If that conversion works out, I may ask for my airframe back.................Please keep us advised of your progress on the conversion................
Hi Paul,

This raises my concern. I thought you fixed the gear issue by making the knuckels have a "over the center" travel. Does your gear still collapse with that fix?

Thanks.

Onewing
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Old 08-24-2011, 02:03 PM
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Default RE: CARF F4U-1 Corsair build thread

I had two large Sierra air tanks. I was able to hold pressure both up and down for several days. I ran 110lbs of pressure before flights and landed in excess of 100lbs. I was not able to determine why it would fail one time and not the next or I would have addressed it. Thanks for asking..........
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Old 08-24-2011, 02:06 PM
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Default RE: CARF F4U-1 Corsair build thread

Onewing:

Yes. Worked for awhile but started failing again.
Paul
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Old 08-24-2011, 02:21 PM
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Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: didiwatt

I had two large Sierra air tanks. I was able to hold pressure both up and down for several days. I ran 110lbs of pressure before flights and landed in excess of 100lbs. I was not able to determine why it would fail one time and not the next or I would have addressed it. Thanks for asking..........
Thanks for the reply. Definitely not an air pressure issue. Very strange.

Electric jack screws will make all this academic, I hope.
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Old 08-24-2011, 04:21 PM
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Default RE: CARF F4U-1 Corsair build thread

Thanks Paul.

I will call Ray Labonte tomorrow. This looks like a defective design. I hope Comp ARF and Sierra stand behind their products.

Onewing
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Old 08-24-2011, 05:32 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: onewing

Thanks Paul.

I will call Ray Labonte tomorrow. This looks like a defective design. I hope Comp ARF and Sierra stand behind their products.

Onewing
I doubt Sierra will stand by anything, his Miester P 47 gear upper door collar is out of position. It is NON-FUNCTIONAL. He refuses too make it right. His loss.
Just my 2cents.
Dave
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Old 08-24-2011, 07:46 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: dpav8r


Quote:
ORIGINAL: onewing

Thanks Paul.

I will call Ray Labonte tomorrow. This looks like a defective design. I hope Comp ARF and Sierra stand behind their products.

Onewing
I doubt Sierra will stand by anything, his Miester P 47 gear upper door collar is out of position. It is NON-FUNCTIONAL. He refuses too make it right. His loss.
Just my 2cents.
Dave
Perhaps Comp -ARF can get somewhere with Sierra.

I just looked at some new Robart Corsair gear that I have (1/5 scale), and it has mechanical locks both in the up and down positions. I'm sure Darrel is capable of doing the same, if he has a mind to, and it looks like it would not be that hard.

Given the size and investment in this Corsair, he should have a mind to make this gear as good as it can be, IMO.
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Old 08-26-2011, 05:49 PM
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Default RE: CARF F4U-1 Corsair build thread

Flight #2 is set for tomorrow at the Cleveland Club. She is ready and so are we. We will post results and some pictures tomorrow evening.
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Old 08-26-2011, 08:08 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: ram3500-RCU

Flight #2 is set for tomorrow at the Cleveland Club. She is ready and so are we. We will post results and some pictures tomorrow evening.
Good Luck on flight #2. I am down to checking the fuel system for function and leaks. Put the prop on and check CG one more time.

Following the landing gear issues some are having, I will double check mine again.

Did you break in your engine on a test stand or on the Corsair?

Thanks,
Vern
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Old 08-26-2011, 08:17 PM
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Default RE: CARF F4U-1 Corsair build thread

Can't wait to see her fly again,, I'm lucky we're neighbors,, kinda

Weather is suposed to be great,, cya in the am,,, Oh shoot it is the AM
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Old 08-27-2011, 02:41 PM
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Default RE: CARF F4U-1 Corsair build thread


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ORIGINAL: vfrank59


Quote:
ORIGINAL: ram3500-RCU

Flight #2 is set for tomorrow at the Cleveland Club. She is ready and so are we. We will post results and some pictures tomorrow evening.
Good Luck on flight #2. I am down to checking the fuel system for function and leaks. Put the prop on and check CG one more time.

Following the landing gear issues some are having, I will double check mine again.

Did you break in your engine on a test stand or on the Corsair?

Thanks,
Vern
Well guys, I just got home from the fly-in and it went GREAT!!!!!

The wings worked good, the engine ran good, she flew great, THE LANDING WAS WITHOUT ISSUES, and the gear worked flawlessly.

I brought it in tail high, and planted the mains firmly so she couldn't bounce back up. It went great.

A friend got video of the whole flight. I'll post with it as soon as I get it. I also have some stills to post.

Bob Brown (AMA President) was there, and I got to have a nice visit with him. He is a fan of these giant war birds as we are.

Thanks to Larry, his crew and wife for such wonderful hospitality and a great day of flying.
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Old 08-27-2011, 02:50 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: scale only 4 me

Can't wait to see her fly again,, I'm lucky we're neighbors,, kinda

Weather is suposed to be great,, cya in the am,,, Oh shoot it is the AM
Thanks for making us feel so welcome and for a great time. Let's do it again.
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Old 08-27-2011, 03:20 PM
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Default RE: CARF F4U-1 Corsair build thread

Some pictures.
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Old 08-27-2011, 03:42 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: vfrank59


Quote:
ORIGINAL: ram3500-RCU

Flight #2 is set for tomorrow at the Cleveland Club. She is ready and so are we. We will post results and some pictures tomorrow evening.
Good Luck on flight #2. I am down to checking the fuel system for function and leaks. Put the prop on and check CG one more time.

Following the landing gear issues some are having, I will double check mine again.

Did you break in your engine on a test stand or on the Corsair?

Thanks,
Vern
Hello Vern. We ran the engine in the plane, not on a stand. (4) runs prior to the first flight. Checked it over and re-tightened the exhaust nuts after each run. They are loose again after the runs today.

As for the gear, we aired up just before we flew, and I didn't do a down and dirty slow pass. Worked great.

I used the recommended throws with 60% expo on ailerons and elevators, and 70% on the rudder. For taxi, I have my dual rates set max throw on the elevator. I have my brother remind me to switch it down before take off, lest I forget.

We are going to increase the flaps another 5% from 30% to 35%. May go to 40% later.
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Old 08-27-2011, 04:18 PM
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Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: ram3500-RCU


Quote:
ORIGINAL: vfrank59


Quote:
ORIGINAL: ram3500-RCU

Flight #2 is set for tomorrow at the Cleveland Club. She is ready and so are we. We will post results and some pictures tomorrow evening.
Good Luck on flight #2. I am down to checking the fuel system for function and leaks. Put the prop on and check CG one more time.

Following the landing gear issues some are having, I will double check mine again.

Did you break in your engine on a test stand or on the Corsair?

Thanks,
Vern
Hello Vern. We ran the engine in the plane, not on a stand. (4) runs prior to the first flight. Checked it over and re-tightened the exhaust nuts after each run. They are loose again after the runs today.

As for the gear, we aired up just before we flew, and I didn't do a down and dirty slow pass. Worked great.

I used the recommended throws with 60% expo on ailerons and elevators, and 70% on the rudder. For taxi, I have my dual rates set max throw on the elevator. I have my brother remind me to switch it down before take off, lest I forget.

We are going to increase the flaps another 5% from 30% to 35%. May go to 40% later.
Glad you had a fun day and thanks for the excellent report.

Glad to hear about the radio setup. I seem to always over correct on the flare and cause a small roller coaster effect. I usually set my expo to about 35% for most things. But will follow your lead on radio setup.

I will keep an eye on the exhaust nuts. I researched the AN900 GASKETS. and they are asbestos filled copper rings. We use them at work, and our procedure is, turn the nut finger tight and then tighten a further 1/16 to 1/8 inch turn. It is reusable until you get no further crushing of the gasket.

Worst case, try some of this, ANTI-SEIZE Sealant Tape, Ceramic, 1/2 x 600 In .ealant Tape, Poly Temp(R), Size 1/2 x 600 In, Temp. Range -450 To 2100 F, Characteristics Ceramic Filled with PTFE, Application Specifically For Anti Seize Applications Typical to Food Industry, Standards MIL SPEC T-27703A, CID A-A-58092

[link]http://www.grainger.com/Grainger/ANTISEIZE-Sealant-Tape-2TE46?cm_mmc=GoogleBase-_-Adhesives,%20Sealants%20and%20Tape-_-Thread%20and%20Gasket%20Sealants-_-2TE46&ci_src=14110944&ci_sku=2TE46[/link]




Thanks,
Vern
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Old 08-27-2011, 04:18 PM
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Default RE: CARF F4U-1 Corsair build thread

Well we finaly got the pleasure to see Zombie and that beautiful Corsair in flight.

The drive to Grafton only took 3 hours and well worth it . But on the way back we seem to aquire a speeding ticket ,.,, ooops.

The best part of the trip i finaly got to meet my friend Gary.

I have never heard a Moki radial before and i'll tell you it is sweet .

The people at the field were great and very friendy not to mention all the tid bits of info i came back with.

Gary i will put all the video i have on a cd of Zombie and the Corsair and mail it out to you, sense the camera my brother-in-law and i used only records in HD , the files are to large to email.

Here are a few pics of the Corsair taking off and landing . And a close up of Zombies pilot.

The way you landed her sure didn't look like the second flight ,, i think you got it down pat.

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Old 08-27-2011, 05:30 PM
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Default RE: CARF F4U-1 Corsair build thread

Gary,
the stills of the landing look great, glad to here you had no issues..........
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Old 08-27-2011, 06:35 PM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: ram3500-RCU


Quote:
ORIGINAL: scale only 4 me

Can't wait to see her fly again,, I'm lucky we're neighbors,, kinda

Weather is suposed to be great,, cya in the am,,, Oh shoot it is the AM
Thanks for making us feel so welcome and for a great time. Let's do it again.
Our pleasure once again,, Glad everything went smoothly for flight 2,, cya soon
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Old 08-28-2011, 05:12 AM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: panhandler

Well we finaly got the pleasure to see Zombie and that beautiful Corsair in flight.

The drive to Grafton only took 3 hours and well worth it . But on the way back we seem to aquire a speeding ticket ,.,, ooops.

The best part of the trip i finaly got to meet my friend Gary.

I have never heard a Moki radial before and i'll tell you it is sweet .

The people at the field were great and very friendy not to mention all the tid bits of info i came back with.

Gary i will put all the video i have on a cd of Zombie and the Corsair and mail it out to you, sense the camera my brother-in-law and i used only records in HD , the files are to large to email.

Here are a few pics of the Corsair taking off and landing . And a close up of Zombies pilot.

The way you landed her sure didn't look like the second flight ,, i think you got it down pat.

Thank you Dan. I'm glad you made the trip and had a good time (sorry to hear about your driving award) and thanks for taking the video. I'm anxious to see it and learn from it. Yes, we try to learn something from each flight, and I learned a lot about the Comp Arf Corsair that first flight and this one.

This is a well designed airplane and teemed with the intended Moki 250, a joy to fly. Landing is a challenge and different than my other war birds, but not any harder, just a little different approach is needed on the final approach, touchdown and roll-out. You need a little more speed in order to "fly" it down the runway after touch down, keeping the tail high until it comes down on it's own. Stalling it to the ground will likely cause a bounce and further problems. Much different than our Meister P-47, but very cool to watch.

Thanks again for attending with your boy. I hope to see you again when we can fly our P-38s together.
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Old 08-28-2011, 05:20 AM
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Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: Mustangman40

Gary,
the stills of the landing look great, glad to here you had no issues..........[img][/img]
Thank you. It was a good day. The first picture is of the take-off roll, no flaps and slightly nose high. I like to make a very gradual assent into the air as the full scale planes did. The second is of the landing just after touch down. The final approach was tail high, with just a slight leveling at touchdown and then a very tail high run-out, as speed was bled off. Worked great and not a hint of any gear issues.
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Old 08-28-2011, 05:43 AM
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Default RE: CARF F4U-1 Corsair build thread

Ram,
Where is you rfield?
Is that Bernie O in that pic post #90?
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Old 08-28-2011, 11:30 AM
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ORIGINAL: YAT-28E

Ram,
Where is you rfield?
Is that Bernie O in that pic post #90?
The field is in Grafton on rt 82 west of Cleveland. Yes, that is Bernie. He was checking out our planes and flying style for possible future participation in the model display part of the Cleveland Air Show. Looks like Zombie and the F4U may be part of the show next year. It would be a real privileged to represent the giant scale war bird segment of our hobby.

It was a treat to meet Bernie, and Bob Brown at this event. Icing on the cake.

Here is a few more pictures of Bernie checking out the action.
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Old 08-28-2011, 11:40 AM
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Default RE: CARF F4U-1 Corsair build thread

Some more pictures of the Corsair, taken by Panhandler. Thanks so much for getting these.

In the second picture, you will see the generous up elevator I am using to taxi her. With this throw, I have no problems what so ever.

Thank you Cleveland RC for giving us a clear airspace to fly her.
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Old 08-28-2011, 02:22 PM
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Default RE: CARF F4U-1 Corsair build thread

The guy in the red shirt taking pictures is Al our Club Pres.. I'll post some pics up when he emails them to me,, they usually come out great
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Old 08-28-2011, 02:30 PM
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ORIGINAL: scale only 4 me

The guy in the red shirt taking pictures is Al our Club Pres.. I'll post some pics up when he emails them to me,, they usually come out great
Looking forward to seeing them. Thank you.

Does he post pictures of events on your web site?
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