RC Warbirds and Warplanes Discuss rc warbirds and warplanes in this forum.

CARF F4U-1 Corsair build thread

Reply
Old 09-26-2012, 03:48 AM
  #1451
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is a n early test showing how the doors need to clear the fork, impossible with a 4" shock. You will see that on this model, I had not yet gotten the shock shortened, but simply used one of the correct length from the RC car industry.

http://www.youtube.com/watch?feature...5HZH4lu60&NR=1
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 04:20 AM
  #1452
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is the video with the permanent doors installed.

http://www.youtube.com/watch?v=T91Ez...ature=youtu.be
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 04:41 AM
  #1453
AngusMc
 
Join Date: Mar 2011
Location: Listowel, ON, CANADA
Posts: 101
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Hi Gary, link does not work, "video removed by user"

this is great, all this info really helps
Thanks again
AngusMc is offline  
Reply With Quote
Old 09-26-2012, 04:45 AM
  #1454
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: AngusMc

Hi Gary, link does not work, ''video removed by user''

this is great, all this info really helps
Thanks again
Sorry guys. Working on it. I screwed something up. I'm downloading it again. Should be OK in a couple minutes. I'll edit the link when it is done.
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 04:51 AM
  #1455
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is one that works, in the meantime.

http://www.youtube.com/watch?v=Q2cD-BlZrSo
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 05:05 AM
  #1456
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

OK, I fixed the link in the previous post.
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 09:00 AM
  #1457
MANFRED
 
Join Date: Jan 2002
Location: san diego, CA
Posts: 1,677
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Gary, would love to get that geometry on the door links you made.
Thanks
MANFRED is offline  
Reply With Quote
Old 09-26-2012, 10:14 AM
  #1458
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: MANFRED

Gary, would love to get that geometry on the door links you made.
Thanks
Thought I put that in a post. I'll see if I can find it, and if not, make it available here. It really is nice to be able to eliminate those rear air cylinders.
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 12:30 PM
  #1459
MRadu
 
MRadu's Avatar
 
Join Date: Feb 2007
Location: Los Gatos, CA
Posts: 770
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Gary,

On mine the shock was longer than the first release. So what I did was open up the spring shock in the tail wheel and then using a brass tube I cut a little more the 1/4" of an inch and slipped it over the piston and then replace the spring and with thread lock (blue) I put the shock back together. Hope this helps.

One question: How can I get the control arm for the tail hook? As seen in your tail wheel video.

Thanks
MRadu is offline  
Reply With Quote
Old 09-26-2012, 01:01 PM
  #1460
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: MRadu

Gary,

On mine the shock was longer than the first release. So what I did was open up the spring shock in the tail wheel and then using a brass tube I cut a little more the 1/4'' of an inch and slipped it over the piston and then replace the spring and with thread lock (blue) I put the shock back together. Hope this helps.

One question: How can I get the control arm for the tail hook? As seen in your tail wheel video.

Thanks
Just as a note to those who may not be comfortable with doing the mod themselves, Darrel will 're-manufacture" the shock to the proper length, without any loss to load capacity (as in shortening the spring, or reducing travel), at no charge (he did a quick turn for me, around as well). Keep it mind that that shock is the whole smash for holding the tail wheel in place. And, without the proper travel and load capacity, you WILL bend the upper pivot arm (the one the cylinder pushes on) when she bottoms out.

All the parts you see on the tail gear I hand made, except the hook itself. That is part of the Greame Mears upgrade kit. I don't know of any commercial source for them. If someone does, please let us know. Will save me some time on the next one.
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 01:18 PM
  #1461
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is a better view of the parts I made, and how they all work.

http://www.youtube.com/watch?v=TkKSBCstNu0

Couple things I'd like to add. I originally used a screw in the hook, just screwed into the resin, as seen in the video. This screw eventually worked loose and the rear part of the boom with the hook slid off as we took off (looked pretty cool with the hook down until it did) . Fortunately, this happened right over the runway on take off, and another pilot found the hook and kindly returned it to us. I then through bolted it and added some CA, with no more issues.

Also, as you can see, I did not paint the servos and lead wires in the top of the gear bay. A scale judge downgraded us for that!!! This is one of the couple things that kept us out of 1st place, as we missed it by just 1 point. Easy fix.

Everything else on the tail worked perfectly and looked great.

Look closely and you can see the tail hook has come loose and is down as she rolls down the runway and lifts off (about 2 min into this video) on her 4th flight.

http://www.youtube.com/watch?v=onOX3fJKZtw&feature=em-
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 04:24 PM
  #1462
AngusMc
 
Join Date: Mar 2011
Location: Listowel, ON, CANADA
Posts: 101
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Another question, I have Robart 165 door cylinders, at the end of the stroke I have about 1/8-3/16 left to attach to the door hinge mount hole, typically I would just put a ball link on the end and be done but not enough room, it looks like I need a 2-56 theaded 90deg fitting of some sort, I have seach the web and cant seem to find anything any suggestions

Angus
AngusMc is offline  
Reply With Quote
Old 09-26-2012, 06:43 PM
  #1463
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: AngusMc

Another question, I have Robart 165 door cylinders, at the end of the stroke I have about 1/8-3/16 left to attach to the door hinge mount hole, typically I would just put a ball link on the end and be done but not enough room, it looks like I need a 2-56 theaded 90deg fitting of some sort, I have seach the web and cant seem to find anything any suggestions

Angus
First, I would go with better air cylinders. We use Ultra Precision cylinders. They are what they say, and DON'T LEAK. Here is a link for them. With the stock air gear, you need ALL the pressure you can get to keep the gear locked.

http://www.globaljetclub.com/index.p...product_id=394

You can move the cylinder towards the center for more room if you need it.
Attached Thumbnails
Click image for larger version

Name:	Fd92567.jpg
Views:	83
Size:	57.1 KB
ID:	1805370   Click image for larger version

Name:	Wu59641.jpg
Views:	49
Size:	29.0 KB
ID:	1805371  
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 06:46 PM
  #1464
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

You Corsair guys will love this. I took this at the Cleveland National Air Show this past Labor day.
Attached Thumbnails
Click image for larger version

Name:	Mk27691.jpg
Views:	41
Size:	20.2 KB
ID:	1805372  
ram3500-RCU is offline  
Reply With Quote
Old 09-26-2012, 09:16 PM
  #1465
saramos
 
saramos's Avatar
 
Join Date: Dec 2003
Location: Northridge, CA
Posts: 3,037
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Nice!
saramos is offline  
Reply With Quote
Old 10-02-2012, 12:18 PM
  #1466
nauticom
 
Join Date: May 2002
Location: Gibsonia, PA
Posts: 121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Gary:

You stated in your post on page 40:

With my marks triple checked, I cut the homemade rails in. I then epoxied the rails in the slots. I am using a flat head machine bolt, with a jam nut tightening it to the canopy. Then a self-locking nut will be screwed onto the inside, which will run in the rail. This will give the scale look on the outside of the canopy. I'll drill a hole behind the rail so these can be inserted, then I'll screw a plate on to cover this. The full scale has this look.

I was going to use brass for the doubler on the inside of the canopy, but then thought of using some carbon fiber and found that the pieces that you cut the main gear doors are perfect for this. I cut this to shape and was able to drill and tap it with 2-56. Works great.

Gary,
My project is a Zeroli Corsair. I just got the L&D jackscrew and controller from Mitch and looks very good.

I am looking at the flat screw and locking nut you used for sliding in the sloted brass rails for the back of the canopy. My 2-56 locking nuts are to big for the 1/4 square brass rails I have from NCIS (R.I.P).
Also in a few posts latter you show going to a ball link with L shaped brass for mounting to the front of the canopy. how did you attach the push rod to the ball?
I have found at my LHS a ball and socket 4-40 size that, with some sanding I can get it to work. These are make by LOSI and are at Horizon. Looks like model car stuff.
Thanks for any help you can offer.
Bob Masterson
bokee@consolidated.net



I have the NCIS supplied rails and ball links but cannot find a small enough nut to fit inside my rails. They are 1/4" square
nauticom is offline  
Reply With Quote
Old 10-02-2012, 12:25 PM
  #1467
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread


Quote:
ORIGINAL: nauticom

Gary:

You stated in your post on page 40:

With my marks triple checked, I cut the homemade rails in. I then epoxied the rails in the slots. I am using a flat head machine bolt, with a jam nut tightening it to the canopy. Then a self-locking nut will be screwed onto the inside, which will run in the rail. This will give the scale look on the outside of the canopy. I'll drill a hole behind the rail so these can be inserted, then I'll screw a plate on to cover this. The full scale has this look.

I was going to use brass for the doubler on the inside of the canopy, but then thought of using some carbon fiber and found that the pieces that you cut the main gear doors are perfect for this. I cut this to shape and was able to drill and tap it with 2-56. Works great.

Gary,
My project is a Zeroli Corsair. I just got the L&D jackscrew and controller from Mitch and looks very good.

I am looking at the flat screw and locking nut you used for sliding in the sloted brass rails for the back of the canopy. My 2-56 locking nuts are to big for the 1/4 square brass rails I have from NCIS (R.I.P).
Also in a few posts latter you show going to a ball link with L shaped brass for mounting to the front of the canopy. how did you attach the push rod to the ball?
I have found at my LHS a ball and socket 4-40 size that, with some sanding I can get it to work. These are make by LOSI and are at Horizon. Looks like model car stuff.
Thanks for any help you can offer.
Bob Masterson
bokee@consolidated.net



I have the NCIS supplied rails and ball links but cannot find a small enough nut to fit inside my rails. They are 1/4'' square
I just read through this nauticom. I don't have time right now, but I'll post here this evening with an explanation and more pictures that will make it easy for you.
ram3500-RCU is offline  
Reply With Quote
Old 10-02-2012, 12:42 PM
  #1468
nauticom
 
Join Date: May 2002
Location: Gibsonia, PA
Posts: 121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Gary: Thanks a bunch.
BobM
nauticom is offline  
Reply With Quote
Old 10-03-2012, 04:20 PM
  #1469
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here are some pictures to help with my canopy system for the Corsair. It will also work on other planes.

1. A ball link is used, and captured in a square stock sized to slide into the slotted larger canopy rail.

2. This "driver" is connected to a push rod epoxied into the square stock.

3.The front of the canopy is bolted to a bracket which in turn is fastened to the threaded end of the ball link.

4. The rear of the canopy is held by a bolt fastened to the canopy by a nut on the inside, with a self locking nut on the end. This nut is slide into the canopy rail.
Attached Thumbnails
Click image for larger version

Name:	Mj24712.jpg
Views:	98
Size:	62.5 KB
ID:	1807582   Click image for larger version

Name:	Jh15528.jpg
Views:	93
Size:	75.1 KB
ID:	1807583   Click image for larger version

Name:	Om32043.jpg
Views:	89
Size:	65.5 KB
ID:	1807584   Click image for larger version

Name:	Zx71387.jpg
Views:	95
Size:	72.2 KB
ID:	1807585   Click image for larger version

Name:	Vt57773.jpg
Views:	99
Size:	59.6 KB
ID:	1807586  

ram3500-RCU is offline  
Reply With Quote
Old 10-03-2012, 07:05 PM
  #1470
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Some more pictures.

This is the inside view of the rail, and the 1" insert capturing the ball link.
Attached Thumbnails
Click image for larger version

Name:	Zx72440.jpg
Views:	71
Size:	217.6 KB
ID:	1807645   Click image for larger version

Name:	Lj24048.jpg
Views:	75
Size:	216.2 KB
ID:	1807646   Click image for larger version

Name:	Hf97676.jpg
Views:	66
Size:	81.1 KB
ID:	1807647  
ram3500-RCU is offline  
Reply With Quote
Old 10-03-2012, 07:23 PM
  #1471
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is the whole drive system prototype.
Attached Thumbnails
Click image for larger version

Name:	Wu61493.jpg
Views:	84
Size:	74.6 KB
ID:	1807648  
ram3500-RCU is offline  
Reply With Quote
Old 10-03-2012, 07:31 PM
  #1472
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Here is the video I made based on this system.

The 3000rpm motor I spoke of in the video did not produce enough torque and we settled on a 1200 rpm from Down and Locked.

Although it is slower than we are used to seeing from the air driven systems, I thought the visual affect on the runway was very good. It worked at a speed that one could see it clearly moving.

Closing http://www.youtube.com/watch?v=KfNt4...feature=relmfu

Opening http://www.youtube.com/watch?v=uo_6f9sS1ww
ram3500-RCU is offline  
Reply With Quote
Old 10-04-2012, 05:01 PM
  #1473
nauticom
 
Join Date: May 2002
Location: Gibsonia, PA
Posts: 121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Gary:
Thanks very much for the further insite to your canopy design.
I'm assuming your inside square tube is 1/4" square riding inside a 5/16 square tube?
In any event I cannot find 5/16 square tube anywhere. Any suggestions?I really like the square brass carrier. I will go that route if I can find some of it.
Thanks,
BobM
nauticom is offline  
Reply With Quote
Old 10-04-2012, 08:23 PM
  #1474
ram3500-RCU
Thread Starter
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Quote:
ORIGINAL: nauticom

Gary:
Thanks very much for the further insite to your canopy design.
I'm assuming your inside square tube is 1/4'' square riding inside a 5/16 square tube?
In any event I cannot find 5/16 square tube anywhere. Any suggestions?I really like the square brass carrier. I will go that route if I can find some of it.
Thanks,
BobM
Your welcome Bob.

The slotted outer sq. stock is 7/32 brass (K&S Engineering stock # 154) and the inner one is 3/16 (K&S # 153). Most hobby centers and craft stores carry these.
ram3500-RCU is offline  
Reply With Quote
Old 10-05-2012, 09:54 PM
  #1475
Chris Nicastro
 
Chris Nicastro's Avatar
 
Join Date: Oct 2005
Location: Coeur d'Alene, ID
Posts: 2,403
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CARF F4U-1 Corsair build thread

Holly cow what a model! I just opened my kit today to inspect it and its pretty awesome. Im looking forward to the build and Ill be watching this thread for sure.
Chris Nicastro is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 11:41 PM.