Posts: 271
Joined: 3/20/2007 From: Mobile,
AL, USA Status: offline
Well, I got my OS 1.20AX and it doesn't fit between the engine rails. I thought this was a drop in fit? Can I carve away where needed to make it fit without degrading structural integrity? Secondly, I'm finding it impossible to run my elevator servo wire from the back to the front. I get about 3" in and it just stops. The best I can tell, the elevator servo wire needs to make a 90 degree bend downward before traveling forward, but it just won't go! I wanted to maiden it tomorrow, but if I can't get this stuff figured out it won't happen. Help!
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics
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Joined: 3/26/2002 From: Kannapolis,
NC, USA Status: offline
o i c how much would u need to grind off to make your 120 fit about an 1/8" or so per rail? I seem to always recall having to do this to my kits back in the day. Can u fish a piece of clothes hanger into the hole to see if u r hitting a lump of glue or foam?
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Joined: 3/20/2007 From: Mobile,
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I've tried to run a length of inner pushrod tubing with no luck. I might need something slightly more flexible. Actually that just gave me an idea. I've got some pipe cleaner I might be able to run through. Yeah, I think an 1/8" on either side would do it for the engine mount.
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics
Posts: 271
Joined: 3/20/2007 From: Mobile,
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I just tried the pipe cleaner and it wouldn't go through either. I'm starting to get PO'd. I can't even get my eyes situated to look into the trough to know what the problem is. I may have to resort to cutting away covering which really angers me, since I've already applied my own graphics over the white.
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics
Hey TJ, Don't do anything drastic! I had the same problem with an OMPKatana. Get the smallest Nyrod or similar that you can find. Then cut the end to a point like a hypo needle. Then as you try to feed it thru the fuse rotate it so it tries to find a way. It WAS a pain. I KNOW what you are going thru. Something to consider. If you want to test fly tomorrow just run the servo leads down the outside of the fuse. Use some tape to keep them from flopping around. You'll get to fly and think about a non-destructive solution to your problem. Good luck! Hang in there! JLK
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Joined: 3/20/2007 From: Mobile,
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After some colorful language and tugging and pulling, I finally got the wire through. Well, almost. I've got about an inch of it through the wing box. I think the connector protector for the extension is hung up. Now I just need t figure out how/where to mount/install the receiver and battery. I'm scratching my head on this one.
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics
Posts: 77
Joined: 8/22/2002 From: Hamilton,
OH, USA Status: offline
TJR1
What kind of receiver are you using? If it is small enough you can put it inside the fuselage as I have pictured below. This is a JR R770 seen in this picture. As for the battery, wrap it in foam and put it in the LEFT wing panel just behind the leading edge. I put a switch with charge jack in this panel as well ( as pictured ). Now, use a Y adapter with the left aileron and switch so that all you have to plug in is the left aileron servo and right aileron servo from the small extensions coming from the receiver. Remember it doesn't matter where the battery is plugged into the receiver. That it why using the Y adapter saves you from having to make 2 connections in the left side. I use a 5 cell 2700mAh NiMh for this plane and it works perfectly. NO PROBLEM shaving a little off the engine rails for the OS 1.20 AX. I would suggest mounting it all the way back in the rails for the greatest support and you shouldn't have any problems.
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Joined: 3/20/2007 From: Mobile,
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That makes good sense. I'm using a Futaba R148DF receiver with the plugs on the end. I may have to do something different with the Aileron servo extensions so that I end up with a pigtail on the receiver to make life easier. Where did you run your antenna? More pictures, I love pictures.
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics
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Joined: 7/19/2004 From: Berwyn,
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Sounds like you're getting the wire thing figured out. i ran my antenna down the side to the fuse bottom and then back, covered with clear blenderm.
As for the engine, just grind a bit to make it fit. I've had a 1.20AX on my Fusion for over a year with no problems at all. And I beat that slab like a rented mule!!!
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Joined: 8/22/2002 From: Hamilton,
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See the pics below for antenna routing. It's really easy. I drilled a small hole to allow a small diameter plastic tube (throttle cable housing) to go into the bottom of the compartment where the receiver is. You will be drilling through the CF I-Beam but that is OK. I then secure it to a Hitec servo arm like you see here with a rubber band around the tail wheel. This keeps everything tight and out of sight. I also put a keeper on the antenna before it exits the fuselage so the tension from the rubber band doesn't pull on the receiver itself. Also note where I added CF tubes to the underside of the horizontal stab. This is a good idea as that I the one known weak spot on the airframe. Last but not least be sure to add extra CA to the root ribs and the wing tube where it touches the second rib and shear webs. There have been a few cases of these parts not having adequate CA applied. I promise you when you get this plane in the air you are going to LOVE IT!!
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I like the linkages and control arms that you used, that looks sharp. Can you post a more detailed shot of your receiver and connections? I may have to buy more extensions to make it work, but I'm concerned about too many connections.
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Check your six... I might be on it! AMA#: 741093 Member: Azalea City Model Aeronautics