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Need help with a foam wing control line build Empty

Need help with a foam wing control line build

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Need help with a foam wing control line build Empty Need help with a foam wing control line build

Post  Ricksrod Sat Sep 14, 2019 4:00 am

I'm building a control line plane using a 48" foam wing. Wing under. It's running an old K&B 35. It's a profile with a slot cut over the wing to accommodate the bellcrank. I'm needing help on how to run the lines over the wing and off the wing tip. I'm thinking of attaching two tubes on the end of the wing to run the lines through but I'm stumped how to attach the tubes at the wing tips any ideas?
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Post  Levent Suberk Sat Sep 14, 2019 7:15 am

Can be made like this:

Need help with a foam wing control line build Cl10

(www.airplanesandrockets.com)
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Need help with a foam wing control line build Empty Re: Need help with a foam wing control line build

Post  Ken Cook Sat Sep 14, 2019 1:41 pm

Most of my combat planes are foamies with exposed bellcranks. One thing I always try and do is to make the bellcrank sit as tight to the wing as physically possible. Sometimes this even requires a bit of sculpting of the foam for pushrod clearance. I probably wouldn't like to do so on a stunter. The problem I have come across is that the inboard wing wants to fly tip high when upright. This may not be the situation on a profile stunter. A combat model without a fuse in my experience requires a bit of warping the outboard panel for compensation. What I have noted is that some of the guys have melted a guide through the wing tip. They heated a 1/8" piece of tubing and entered the end of the wingtip slightly below the centerline of wing. They pretty much eyeball it and come up from the entrance through the top of the wing which usually exits on the top a few inches back from end of wingtip. Dubro nylon antennae extension is then epoxied into the hole and sanded flush to the wing and tip.

The main thing here is that you have no reference for leadout exit. Due to being a stunter, I would opt for a slider for adjustments.
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Need help with a foam wing control line build Empty Foam Wing help

Post  Ricksrod Sat Sep 14, 2019 7:10 pm

Thanks for  the quick response. Picture and comments gives me a lot to work with. I'll post some pics before and after the first flight. RC Plane RC Plane Smile
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Post  Ricksrod Wed Sep 18, 2019 12:01 am

The plane is complete. It's scratch built using foam wings from a cub, running an old K&B 35. It has a 48" wingspan. I plan on taking it on it's first flight this weekend.Need help with a foam wing control line build Scratc10
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Post  rsv1cox Wed Sep 18, 2019 12:32 am

I love your color combo and the quality of your work. Hope your flight is successful.
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Post  944_Jim Wed Sep 18, 2019 12:54 am

Wow! That looks really good. What are the line guide loops made from?
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Need help with a foam wing control line build Empty Line Guides

Post  Ricksrod Wed Sep 18, 2019 2:23 am

@944_Jim wrote:Wow! That looks really good. What are the line guide loops made from?

The guides are just wood threaded metal loops. They are threaded & glued in into a strip of plywood. There is another strip under the wing and it's all sandwiched with small bolts. (hope it holds)
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Post  TLAnderson Wed Sep 18, 2019 2:26 am

Looks really good! Good luck with your flights. Smile
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Need help with a foam wing control line build Empty Foam wing

Post  Ricksrod Wed Sep 18, 2019 2:51 am

Thanks for all  the encouragement. The color was inspired by a resto I did on a cox PT19. The design was sort of a single seat PT19.Need help with a foam wing control line build Both_p10
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Post  getback Wed Sep 18, 2019 2:03 pm

The plane looks great Rick hope the maiden go well !! Popcorn
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Need help with a foam wing control line build Empty First Flight

Post  Ricksrod Wed Sep 25, 2019 6:27 pm

@getback wrote:The plane looks great Rick hope the maiden go well !! Popcorn

The  First Flight went great!  Even on 60" lines I got a little dizzy. That K&B 35 did a great job. The home made "Stooge" worked well too. I just kept level flight to see how she did. Looking forward to my next flight.
Need help with a foam wing control line build First_11Need help with a foam wing control line build Stooge13
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Post  rsv1cox Wed Sep 25, 2019 7:08 pm

@Ricksrod wrote:
@getback wrote:The plane looks great Rick hope the maiden go well !! Popcorn

The  First Flight went great!  Even on 60" lines I got a little dizzy. That K&B 35 did a great job. The home made "Stooge" worked well too. I just kept level flight to see how she did. Looking forward to my next flight.

With 60 inch lines I would think you were a whirling dervish. Smile No wonder you got dizzy. Smile

Seriously, glad your first flight with it went so well. Earns a greenie.

Bob
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Need help with a foam wing control line build Empty Foam wing project

Post  Ricksrod Sat Sep 28, 2019 2:26 am

Just got the decals and a Real fuel tank.Need help with a foam wing control line build 20190910
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Post  getback Sun Sep 29, 2019 2:56 pm

Good to hear everything went well Very Happy Plane looks good with decals and what size tank is that ?
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Post  Ricksrod Sun Sep 29, 2019 11:56 pm

Thanks! It's a 6 oz tank. That K&b 35 likes the fuel a lot! Was going to fly today and discovered I had left my control handle at the park. I ran over there but it was gone. Had that handle since 1975 or so.confused
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Post  getback Mon Sep 30, 2019 3:29 pm

Well taht Sucks sorry to hear it was not there , heck i would make a sign saying it was left there with a 5- reward ,, man thats alot of fuel LOL how long will it go with that much or do you know yet ? Airplane
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Need help with a foam wing control line build Empty Lost Handle

Post  Ricksrod Tue Oct 01, 2019 11:09 pm

@getback wrote:Well taht Sucks sorry to hear it was not there , heck i would make a sign saying it was left there with a 5- reward ,, man thats alot of fuel LOL how long will it go with that much or do you know yet ? Airplane

Took your advice and posted a pic. and reward at the park. Got a call from a maintenance worker today that found it! Handle is back safe and sound.

Thanks for the tip!
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