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Top Flite Giant Scale F4U Corsair

Old 05-21-2008, 11:29 PM
  #101  
rea59
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Originally Posted by Lieutenant Loughead View Post
WOW! Absolutely amazing!

What's the expected AUW?

SUBSCRIBED!
I'm expecting 28 to 29 lbs but the motor will be good for 33 lbs. That said however the new A123's could reduce the weight even more leaving me with "extra" power....anyone ever seen a "3D" warbird....he he
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Old 05-21-2008, 11:31 PM
  #102  
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I would not even consider anything less than A123 cells, amazing build cant wait to see it in the air
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Old 05-21-2008, 11:48 PM
  #103  
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I've done more work but still not quite ready to post the pic's yet (also need to take a few more). After getting my AMA number I joined a local club. Today I received my key to the gate and plan on taking my Telemaster and Chipmunk to the field tomorrow morning (I also spent time working on my Monster Pitts and going to my daughters graduation from 5th grade) The club field has two 50 foot wide by 600 foot long runways (one grass and one paved) I'll be flying there in preparation for someday maidening this one.
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Old 05-22-2008, 12:32 AM
  #104  
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She's looking good Ray! Coming along very nicely.

Can't wait to see her done!
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Old 05-24-2008, 12:24 PM
  #105  
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Great build Ray, thought I would share a couple of pics of the Plettenberg in spinner motor in my 2.1M Composite Extra, the front former has been suitalbly braced since the pics where taken.

Have you run up the double motor Axi yet, if so with what sort of results?

Have you looked at he Kodiak switch yet? I just bought four more to convert the rest of my fleet to A123 batteries.

Mike
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Old 05-24-2008, 03:10 PM
  #106  
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Neat!

Haven't run up the motor yet due to no batteries.:o With batteries there is a shelf life so I am waiting till the build is almost complete before purchasing. Also better and lighter batteries may be available by then. Currently the A123's are available in 1 to 4 cell configurations (I will need 8 each in a 5 cell configuration) I'm sure I could make these or have them made up but then by the time this build is ready for the batteries 5 cell should be readily available. I have checked out the Kodiak switch and it does look suitable for some applications but here's the problem area. I really don't want to run 30 to 40 amps "through" the receiver as the Kodiak does. The 'Power Box" runs only the "signal" through the receiver and the "high current" side to the servos bypassing the receiver. Most receivers simply are not capable of "drawing" the amount of current that the Kodiak switch can provide.
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Old 05-24-2008, 03:58 PM
  #107  
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Ray

Its rearly a question of how much power your servo's are going to pull through the Rx bus, most Rx's will happily take 20amps into the servo bus connections, Spektrum have brought out an even bigger capacity Rx for Giant Scale Applications.

As to the A123's I source them from DeWalt 36volt batteries and solder up my own packs, lots of information on how to do this on the web, I will look up some links and post them for you.

Mike

EDIT: to add link: http://www.slkelectronics.com/DeWalt/index.htm

Last edited by BaldEagel; 05-24-2008 at 04:02 PM. Reason: To add link.
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Old 06-19-2008, 03:55 PM
  #108  
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Post F4U Corsair

Any update on this plane yet? Have you hadit in the air yet? No post on this thread since May.
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Old 06-21-2008, 01:03 AM
  #109  
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Haven't done much in the last six weeks. (It is after all flying season)

I added a couple of bulkheads to both sides of the nose. This was a 'dead' area but I'm going to use it to direct airflow to the batteries. Note the holes added into the battery area. The utility shelf is also complete. It's also removable in case anything is in the way I can re-route it. Added the forward skins to the bottom of the fuse and used painters tape on the wing saddles to prevent changing the shape while sanding the same shape into the outer skin. (this area will also get a 1/16 ply covering to fill the gap between the outer skin and plywood saddle former thus creating the area that rests on the wing.) Taped all the way around the hatch area before putting the skin on it to prevent the skin from accidentally adhering to the fuse. Last a pic of the nose bottom covered and shaped. You can see the firewall and clearly see the right thrust built in. (plane is upside down)


1. Vent area
2. Wing saddle
3. Utility area
4. Taping the utility area before skinning
5. Nose skinned and shaped.
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Old 06-21-2008, 01:11 AM
  #110  
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Originally Posted by Gryohead View Post
Any update on this plane yet? Have you hadit in the air yet? No post on this thread since May.
Gryohead
Welcome to Wattflyer!

As you can see this plane is still under construction. I also plan on detailing it so it'll probably be another year or longer before it's maiden flight. (during the build of this one I've built 20 others both balsa (ARF) and foamys (scratch) Have to increase my flying skills before this is ready.
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Old 06-23-2008, 05:26 PM
  #111  
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wow it is looking spectacular,i just read through this entire thread, and im crazy impressed at what you have done

ill definitely be following this one!


jon joe
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Old 06-23-2008, 11:43 PM
  #112  
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Originally Posted by jonloe View Post
wow it is looking spectacular,i just read through this entire thread, and im crazy impressed at what you have done

ill definitely be following this one!


jon joe
Thank you for your interest. As stated in the first post this will be a long slow build. The plane is a monster and takes up all of my bench. Soon I will have to combine the wing and fuse to do some work on the belly pan. Room to work will be a real issue then. However she is looking real good and tests my skills at every turn. I too watch and wait for it to be completed.
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Old 06-23-2008, 11:58 PM
  #113  
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sounds great

i hope one day i will do something like this. maybe even a corsair im a sucker for corsairs
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Old 07-28-2008, 06:03 PM
  #114  
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Any more progress Ray? I'd be more than happy to come back to Kentucky and fly it off that nice paved runway when it's done.
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Old 07-28-2008, 10:57 PM
  #115  
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No recent progress.......Building/Flying/repairing.......and of course spending too much time at work. Hope to get back to it soon though.


Hmmmm...I wonder if that runway is big enough.
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Old 07-28-2008, 11:10 PM
  #116  
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After seeing the motor you're putting in it, I think all you will need is the taxi way.
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Old 09-19-2008, 05:24 AM
  #117  
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REA59,
I really didn't want to clog your great thread up with my stuff but when I tried to send you a private email though this site it said I could not because I did not have enough post yet. I would really like to talk with you about some motor information when you get the time.
And again sorry to have to drop in like this.
Don Hofeldt here in Huntington Beach California. I sure would like to talk with you about your double AXI set up. I have been using the new AXI 5345/16 on 12 cells and have had good luck flying my 24 pound P-51 and a 24 plus pound Sky Shark P-40. My email is [email protected] . I didn't want to clog up your great thread with my planes but I would like for you to see some clips. I'll try to stick one here you can copy and put into your address bar to see a You Tube clip of a couple of my warbirds. Hope to hear from you and good luck on your corsair,looking great! I just picked up an older Byron Corsair last weekend and maybe we can share some information with each other.
[media]http://www.youtube.com/watch?v=6Q1JCb-i8Xs[/media]
[media]http://www.youtube.com/watch?v=KWs8ZfS7xbg[/media]
Later from Don Hofeldt
Oh I might mention I was one of the 3 guys who did the motor work on the 275 pound model of the Spruce Goose used in the movie"The Aviator" Thats another story,but sorta cool.
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Old 11-16-2008, 11:22 PM
  #118  
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Default Advice please

While we wait for rea59...
I want to get a large Corsair and am about to order the TopFlite Giant kit. I would like to use a AXI 5345/16 on 10 or /18 on 12 instead of the dual 5330/20. My idea is to build light for electric and cover with Monokote. I would also consider Neu or Hacker etc but don't know anything about them I only have AXI motors and I use only Castle ESCs. I have a hv85 and hv110 available for this project. What does anybody think?

I was also thinking of the Brian Taylor plans and parts from Bob Holman but understand they are getting hard to get now.

Any other candidates for an 80"+ Corsair?

Thanks.

Don - have you flown the Byron yet?

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Old 11-17-2008, 02:21 AM
  #119  
bladerunner1955
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Default Electric giant corsair

Rodger your right on the money thinking this big ol bird will be in the 30 pound range. I talked with John at Iron Bay about the expected weight of 30 pounds on my Byron. He said that is what they fly at. My Byron is running the AXI 5345/16 on 12 cells and a 22/12 carbon fiber prop. The carbon fiber really adds some power as you have zero flex like with the APC props. I have the 22/12 WE, wide meaning it has just a touch more bite. I have not flown it yet but hope to in the next couple weeks. I needed some extra weight as far up front as possible so I had my friend make a metal prop nut that will go inside the spinner. then I got a dummy engine that weighs 12 oz. Lets see if I can stick some pictures in this reply. I had the wings on and balanced it at 31 pounds. I have the cowl set up to come off with 4 allen heads and then the firewall, motor, lipolys, esc,cowl are all one unit.
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Old 11-17-2008, 02:59 AM
  #120  
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Looks good Don. Maybe you could build a 14s2p pack of A123s and arrange the cells inside and outside of the plywood tube in front of the firewall so all your weght is up front instead of using those long lipo packs.
The A123s don't burn and are steel cased so you don't have to protect them so much. I was thinking that the TopFlite Corsair would need an A123 pack like that because it is supposed to have a big heavy 40-70cc gas engine that weighs 3.5 to 5.5 pounds and the AXIs are so dammed light.
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Old 11-17-2008, 03:03 AM
  #121  
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I worry that I will lose momentum if I buy this TopFlight kit but I'm tired of waiting for a H9 monster. (they canceled the big P-47) H9 builds light big ARFs.
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Old 11-17-2008, 03:06 AM
  #122  
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Here's a Byron Corsair build... did Iron Bay buy the Byron design?

http://www.rcuniverse.com/forum/m_69...13/key_/tm.htm
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Old 11-18-2008, 03:52 AM
  #123  
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I ordered the TopFlight Corsair yesterday. I have started a build thread here.
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Old 11-19-2008, 05:01 PM
  #124  
ENUT
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BLADERUNNER,What about a 4 blade scale prop? That is what I like about e-power.It lets you the builder dictate what prop to use.looks good.
ENUT.
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Old 11-19-2008, 05:14 PM
  #125  
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E-Nut,
If I knew more about multi bladed props I would go for the 4 blades. I have had such good luck with these carbon fiber 2 bladed props I don't want to rick ANY lose of power with this conversion. I really think I am pushing the limits of the AXI 5345/16 power set up. I will use 12 cells and do fly a couple other 25 pound planes with this set up but this corsair is going to weigh 30 pounds. If I had a pot of gold I know their is motor set ups that can deliver more power. But I hae to draw the line somewhere on spending money to get an airplane in the air. I beleive my set up is going to fly it but that first turn might be interesting I flew this set up next to a P-51 that had a DA-50 in it and I was even maybe a hair faster than the DA-50. The P-51's were both Top Flight 1/5 scale ARF's and weighed the same.
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