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RT Aerospace 1/5th T-34C Build

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Old 11-14-2007, 12:40 PM
  #26  
fliir
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Default RE: RT Aerospace 1/5th T-34C Build

Terry:

How are you going to actuate the flaps? Because of the wing dihedral, the flap tubes are not in the same plane where they meet in the wing center section. I would love to hear your solution.

I was thinking about using one of those couplers that connect two elevator pushrods to a single servo. I think Sullivan makes them.

David
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Old 11-14-2007, 03:42 PM
  #27  
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Default RE: RT Aerospace 1/5th T-34C Build

I am thinking about using a seperate servo on each flap. I will just build one tourque rod longer so both will have the same geometry. Not absolutely sure yet, but I don't see a feasable way for the flaps to be connected, due to dihedral, and T/E sweep. Seems like engeneering is 50% of a build these days.
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Old 11-14-2007, 04:52 PM
  #28  
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Default RE: RT Aerospace 1/5th T-34C Build

That could be exciting if you have a servo failure and/or one linkage binds up...

Here is what I was thinking about:

http://www3.towerhobbies.com/cgi-bin...?&I=LXFV37&P=7

That link is for a 2-56 but it is also available in 4-40.
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Old 11-14-2007, 05:16 PM
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Default RE: RT Aerospace 1/5th T-34C Build

I have not had any problem on any of my other birds with 2 servos on the flaps. I do have a couple of ideas how to do it with one servo, and on this bird, I would rather use one. Once I get the torque tubes done and the wing joined, I will work it out.
Here's a pic from the manual, but there are really no details provided.
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Old 11-14-2007, 10:54 PM
  #30  
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Default RE: RT Aerospace 1/5th T-34C Build

The lower picture clearly shows some sort of flex coupling. The angle of the tube changes just inboard of the flap. I would like to know what Ray used.
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Old 11-16-2007, 06:44 PM
  #31  
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Default RE: RT Aerospace 1/5th T-34C Build

OK, time to start building the torque rods to actuate the flaps. This shold be fun. The manual say's to refer to sketch. What sketch?? I will be using some pics from the manual and some sparse referals on the plans. Hope to get them done this weekend. here's the manual pics, and a shot of the new materials.
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Old 11-16-2007, 07:31 PM
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Default RE: RT Aerospace 1/5th T-34C Build

Self Loading Baggage. Hey I resemble that...Oh I mean with out the likes of us Pilots are glorified bus drivers. ha.
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Old 11-16-2007, 10:05 PM
  #33  
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Default RE: RT Aerospace 1/5th T-34C Build

OK, here is the first torque rod set-up. I just tacked it all together, and tacked it all in place, to see how well it would work.
Also posted a vid of the action here: http://www.rcuvideos.com/item/5B92SFQMHG9B9Z49
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Old 11-17-2007, 11:57 AM
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Default RE: RT Aerospace 1/5th T-34C Build

Even after 24 years away from it I still enjoy that description. Team effort though....you're right.
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Old 11-17-2007, 07:46 PM
  #35  
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Default RE: RT Aerospace 1/5th T-34C Build

I guess it all comes down to the platform. In the P-3 the pilots can not launch a weapon with out a NFO in the back. We can not either unless the pilots give us Master Arm Power. We need eachother to fly missions. We are not even talking about the rest of the tube rats needed to accomplish our missions. Definatly a team concept.
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Old 11-29-2007, 07:58 PM
  #36  
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Default RE: RT Aerospace 1/5th T-34C Build

OK, got some more work done. It's been going slow lately as I don't have quite so much time to spend on it.
Joined the wings. I added some extra joiners to the spars since I am using the balsa for spars. Just in case.
Now that I know all the flap mechanisms work well, I can permanently mount the left flap torque rod bearings and sliders. Then i will cover the front of the flaps, and build the top fairings. Next I will work on setting up the flap and aileron servos.
Still need to figure out the best way to run pull-pull from both sides of one servo to each aileron. I have not decided, if I want to make a bellcrank and connector to use 1 servo on the flaps , or just use 2 servos. I'll "ponder" on that for a while.
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Old 11-29-2007, 08:49 PM
  #37  
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Default RE: RT Aerospace 1/5th T-34C Build

What a tremendous job you are doing, that video of the hidden flap linkage and its actuation is awesome.
You are providing some wonderful scale building techniques to the RCU membership.
I certainly appreciate it a great deal.
Count on one more subscription to this thread.

thx Dave
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Old 11-30-2007, 05:39 PM
  #38  
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Default RE: RT Aerospace 1/5th T-34C Build

I sure hope there are some, getting helpful info from this thread. That's why it's here.
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Old 11-30-2007, 09:54 PM
  #39  
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Default RE: RT Aerospace 1/5th T-34C Build

I travel a lot, so sometimes it is a few days between check-ins but you can be sure I am watching every post!

David
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Old 12-01-2007, 12:46 AM
  #40  
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Default RE: RT Aerospace 1/5th T-34C Build

I'm still watching.....I built a full size RV-8 and I found one of the most helpful methods for building as well as a motivator was in watching another builders progress of
his aircaft. It helped to see him move forward when I was hung up and the same thing goes for your thread here. Keep up the good work. WE appreciate it.

Mike
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Old 12-01-2007, 05:26 PM
  #41  
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Default RE: RT Aerospace 1/5th T-34C Build

Got the aileron controls worked out today. The pull-pull is smooth as glass. Next the flap controls, and then the the retract valve.
All these will be in the wing, so I can put in a full cockpit. I am hoping I can make the Top Flite T-34 cockpit kit work, with some minor mods.
BTW, I need a source for some full body 1/5 "jet" style pilots, or some that will pass for the guys in the last pic.
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Old 12-02-2007, 01:21 AM
  #42  
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Default RE: RT Aerospace 1/5th T-34C Build

Terry
I'm not building a T-34 but I'm watching your thread with interest. Great workmanship and wonderful innovation. Keep it going!
Sam
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Old 12-02-2007, 08:46 AM
  #43  
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Default RE: RT Aerospace 1/5th T-34C Build

Sam,
Thanks, but I can't take credit for the "innovation". It's almost all, done per the kit instructions. I have only made a couple of changes.
Made up this flap linkage, but not real sure how well it will work. May be ok, as the servo pulls to deploy the flaps. Still need to put on the flaps and try it out.
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Old 12-02-2007, 10:18 AM
  #44  
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Default RE: RT Aerospace 1/5th T-34C Build

OK, put on the flaps and checked out the linkage this morning. Looks like it will be just fine. I uploaded a video of the operation here: http://rcuvideos.com/item/85RHSM165W7W00YD
I use the servo slow function in my transmitter (Airtronics Stylus) to set the flap speed. Just flip the switch and down they go, nice and slow. Completely eliminates the balloon effect when flaps are applied.
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Old 12-03-2007, 01:44 PM
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Default RE: RT Aerospace 1/5th T-34C Build

Terry,
I have researched the Internet for a 1/5 fullbody pilot for my T34-C . The best result was to follow someone's suggestion to take the 1/5 pilot bust from Aces of Iron- www.acesofiron.com and the arms and legs from Vailly Aviation-www.vaillyaviation.com and join the parts. After some cosmetic and painting job it will look like a pilot of the T34-C.

Geared.
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Old 12-03-2007, 06:27 PM
  #46  
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Default RE: RT Aerospace 1/5th T-34C Build

Well, I have use AoI pilots before in several models. I never saw that bust before, but I was looking at the military pilots. I see they have that one listed as a civilian. It just may be what I need. Thanks
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Old 12-03-2007, 07:08 PM
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Default RE: RT Aerospace 1/5th T-34C Build

Enjoying the photos, keep them coming! I like seeing how you hooked up the flaps and ailerons, good ideas for my future builds!
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Old 12-03-2007, 09:50 PM
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Default RE: RT Aerospace 1/5th T-34C Build

That flap video is very useful in showing how the linkages work. Thanks! I,m also liking that aces of iron pilot mod as well.
Thanks for posting the pics guys.

thx Dave
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Old 12-04-2007, 03:56 AM
  #49  
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Default RE: RT Aerospace 1/5th T-34C Build

hi
just seen this thread for the first time ,been thinking of the top flight one .bit late in the build but can i ask who makes the wing jig & were could i purchase one,how was it too use help or not?, terrific build will keep watching this one
andy
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Old 12-04-2007, 08:28 AM
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Default RE: RT Aerospace 1/5th T-34C Build

The jig, is an "Adjusto-Jig". I don't think they are made anymore, but show up on E-bay and other trader boards occasionally. This particular kit was designed to be built on the jig. All the rod holes were pre cut, and there were no support tabs on the ribs.
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