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Old 02-01-2009 | 06:55 PM
  #26  
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Default RE: LT40 Build thread

Looking good! Your 'bout done with the toughest part. The fuse is gravy.
Old 02-03-2009 | 11:01 AM
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Default RE: LT40 Build thread

Here is a picture of my son's LT40. It was built as a taildragger and has a servo in each wing. We used a Saito 56 on the front.
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Old 02-03-2009 | 11:16 AM
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Default RE: LT40 Build thread

That LT40 looks like a winner.

I've found the Saito 50, 56, & 62 engines to be easier to adjust than the OS 52 Surpass.
Old 02-03-2009 | 03:58 PM
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Default RE: LT40 Build thread

That LT40 looks great Rvator. Thanks Mrbigg. I glued the fibreglass strip with epoxy thinned with alcohol. Then I glued the servo plate on with epoxy also. I'll be using epoxy on the fuse. I just hate the ca glue. I marked the lines and put the motormounts on the firewall. I turned the blind nuts backwards to hold the motormounts while I fitted the engine. Then turned them around one by one pulling them into the plywood. It says to drill the engine holes and gives you a measurement. I'll leave that till last. The weight and balance will be different since it's going to be a taildragger. I also glued the blind nuts on the back of the firewall. I put some tape over the holes so I wouldn't get any glue in the holes.
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Old 02-03-2009 | 09:10 PM
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Default RE: LT40 Build thread

I finished putting the stiffeners on the sides. I used a couple of drill bits in the holes where the dowels go to make sure they lined up.
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Old 02-04-2009 | 02:46 PM
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Default RE: LT40 Build thread

I finished the fuselage. I used epoxy in the first 2 formers. Then as much as I hate it, I used ca on the rest on the sides and bottoms, just to keep everything tight together. Then I used alpetic glue for the top piece. I put some weight on the front too keep the bottom tight.
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Old 02-05-2009 | 06:13 PM
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Default RE: LT40 Build thread

I made up a plate to put inside to support the landing gear. I used epoxy and tightened it all down installing the landing gear temporarily. I put the gussets in for the firewall.
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Old 02-06-2009 | 03:40 PM
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Default RE: LT40 Build thread

I fuel proofed that area where the fuel tank goes. I thinned down epoxy with some alcohol. The part the tank sits on is pretty flimsy and it only sits on a small shelf at each end so I glued a couple stiffeners on it and that will make it more solid on the sides. I glued the windshield in and the piece that the wing sits over ahead of the 3rd former.
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Old 02-08-2009 | 11:16 PM
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Default RE: LT40 Build thread

I just finished up the horizontal stabilizer, and the vertical fin.
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Old 02-10-2009 | 11:21 PM
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Default RE: LT40 Build thread

I cut the slots for the hinges. I put some filler near the spars then sanded the wings. Also did a sanding on the fuselage. I'll do a bit more sanding before I cover.
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Old 02-14-2009 | 02:53 AM
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Default RE: LT40 Build thread

I installed the pushrods, and put extra support in. There seemed to be a lot of sag. On the servo tray I glued some wood supports so the screws would hold better. I sanded the stabilizer the other day and didn't post the pics, also the horizontal fin. I bent a tail wheel bracket, it was duplicated from the sig fourstar. i put a sullivan tailwheel on it. I'll put a tube through the fuselage and the horizontal stabilizer then bend it at right angle to fit the rudder onto it.
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Old 02-14-2009 | 09:09 AM
  #37  
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Default RE: LT40 Build thread

You are doing good work
Old 02-27-2009 | 10:45 PM
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Default RE: LT40 Build thread

Thanks w8ye. I haven't posted lately, I have some more pics. I put some strips on the servo tray to give the screws more to bite into. Finished the fuel tank. Then put the servos in the tray. I started to put a tailwheel with a wire up through the bottom, then I thought i would bend a right angle after to go into rudder, but it's so hard to bend, and I have to go between the hinge and the control horn, so I put in another push rod, crossed it over and will run it off the other side of the servo. I didn't get a pic of that. I finished the covering the horizontal stab.
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Old 02-27-2009 | 11:07 PM
  #39  
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Default RE: LT40 Build thread

I managed to bend my 1/16" tail wire 90 degrees OK with two pairs of pliers. I had to think about that for a little bit before I did it. Wasn't too hard
Old 02-28-2009 | 07:11 PM
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Default RE: LT40 Build thread

w8ye, I bent the tailwheel bottom, and it was pretty hard, but it was ok. But I thought, if I slipped bending it for the rudder, over top of the elevator, I could do damage. So i went the other route. I finished covering now, used 3 rolls of ultracote. I will also post a pic of my four star 60, the one I did last year. The wings are in the background. I like the Sig kits.
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Old 02-28-2009 | 08:10 PM
  #41  
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Default RE: LT40 Build thread

Those look nice
Old 02-28-2009 | 08:23 PM
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Default RE: LT40 Build thread

Most of my planes are Sig kits love em! Last two pics are Sig Hog Bipes I enlarged 16% for Ryobi gas engine. I think I should enlarge LT-40 WAY BIG for the Ryobi gasser and start a build thread on that hmmm fun fun.
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Old 02-28-2009 | 10:42 PM
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Default RE: LT40 Build thread

Nice looking planes sticktickler. Here is the wing all covered.
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Old 02-28-2009 | 10:53 PM
  #44  
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Default RE: LT40 Build thread

You are doing a nice covering job looking at the edges and corners
Old 03-03-2009 | 11:01 PM
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Default RE: LT40 Build thread

Thanks w8ye, I took an upholstery course one time, and learned how to tuck corners, but when i built my other plane a friend showed me a few techniques. He didn't do any of it for me, but he showed me a lot and it helps. Just like the forums here. Before I built my first airplane, I read 3 other threads on guys that built the same aircraft. I have't been as detailed this time, as i was with my other one when posting. I have to apoligize for that. RcKen has a thread on the LT40, and I have referred to his build many times. Anyways, a bit more done, I glued the horizontal stab. Then painted the landing gear. Then I glued on the dorsal fin.
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Old 03-04-2009 | 05:52 PM
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Default RE: LT40 Build thread

I put the control surfaces on today. I used the dubro hinges and used epoxy. Before installing them I heated some vaseline, then dipped just the hinges in and let them cool and dry. It works good, the epoxy doesn't get in the hinges. I used a strip of credit card, it seemed the right thickness to push the epoxy into the slots, then put morre epoxy on the hinges. I then used 99% isopropal acohol to clean the excess epoxy off after installing them. It's starting to look like an airplane now.
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Old 03-04-2009 | 07:24 PM
  #47  
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Default RE: LT40 Build thread

With today's economic times that is the best use of a credit card I can think of.

Spreading epoxy . . . .
Old 03-06-2009 | 11:16 PM
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Default RE: LT40 Build thread

Your right w8ye. I don't use credit card anymore than necessary, When I do, I pay it off right away, the interest they charge is same as loan sharking. Anyways, they are good for spreading epoxy, and I cut a strip to push glue in where the hinges go. I have some more pics to post. I put the decals on. Then installe the horns on the rudder and elevator and got them working. Then I hooked up a rod to the other side of the rudder servo, it crosses over and pulls on a horn I soldered on the tailwheel when the other side pushes the rudder. It seems to be working ok. Won't be long now.
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Old 03-06-2009 | 11:19 PM
  #49  
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Default RE: LT40 Build thread

Here is some more pics.
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Old 03-06-2009 | 11:20 PM
  #50  
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Default RE: LT40 Build thread

Those decals really go well with the yellow. I believe they look better with yellow than white.


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