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Old Jan 01, 2015, 08:19 PM
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Redwing Slick 76" all Electric Build Log

I purchased the Green Version of the Redwing Slick a few months back and just now found the time to build this bad boy.
I have heard nothing but excellent reviews on this plane.
This build will be ALL electric. Motrolfly with ZTW Gecko 155 all on 6s power.
Opening the box and looking at the components, design and craftsmanship it should not disappoint!
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Old Jan 01, 2015, 08:25 PM
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A loose test fit of the components and I get even a bit more excited to get this bird in the air. Control surface throws look great The fit of the cowl, wings and canopy are right on.
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Old Jan 01, 2015, 08:45 PM
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There were some old comments on the hinge quality an many ARFs. I had some Robarts handy so I compared the quality. The free play and the pin diameter are the same.
The new Redwing hinge points were of equal quality to the Robarts so the supplied hinges are going on this plane!

By the way, the White are Redwing and the Gray are Robart
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Old Jan 01, 2015, 09:13 PM
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The power system was noted in the first post. I am using all XQ Power servos on this build. The 4xxx series digitals have been solid on all the planes I have seen locally. The feedback on the web is positive on all the XQ-4xxx servos. Redwing sells and supports them well and I bought them as a package with the plane. XD-40xx servos are rated to 6 volt. I chose the XD-41xx series as they are good to 8.4 volts. The Gecko ESC has a BEC built in that can be programmed up to 8.4 volts so they were a perfect match.
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Old Jan 02, 2015, 08:07 AM
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Mchad,

Do you have pictures of the motor setup yet? I would like to know how your going to build the motor stand? On my servos I like to reinforce them with epoxy all around the servo wooden box. Thanks
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Old Jan 02, 2015, 05:30 PM
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I am glad you asked about the servo box. I sometimes known as Mr. Overkill.
I made a little PDF of the servo tray mod. All you have to do is cut some wood stock as I have listed and the update only takes 15 minutes or so. Lets see if the PDF is viewable!!
Just in case it does not open I put the exact same info in the next 4 or 5 posts.
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Old Jan 02, 2015, 05:34 PM
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Cut (4) pieces 1/8 x 5/16 x 1-1/8 Ply, (4) pieces 1/8 x 3/8 x 2-3/8 ply and (4) pieces 1/4 square x 7/8 long hardwood.
First Test fit servo in servo mount. Then remove servo and set aside until the last step
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Old Jan 02, 2015, 05:36 PM
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Using ample amounts of medium CA glue the 1/8 x 5/16 x 1-1/8 ply as doublers for the servo screws on the inside as shown. Next glue the 1/4 square hardwood bocks as shown applying medium CA to the bottom, side and front surfaces. Both blocks will bump up against the ply doublers you just installed.
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Old Jan 02, 2015, 05:37 PM
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Mark 3/8 from each edge of the main panel to help with centering of the long ply parts. With just two drops of medium CA tack glue the two long ply strips parallel to the main panel and touching the servo mount upright. Test fit in actual wing panel before firmly gluing in place.
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Old Jan 02, 2015, 05:38 PM
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After test fitting hit joint with thin CA. Follow up by filleting all joints with medium CA. After CA is cured you are ready to reinstall the servo.
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Old Jan 02, 2015, 05:42 PM
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The finished product looks like this. You can do this about as fast as you can read it.

Plenty of things will break before this does!!
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Old Jan 02, 2015, 05:51 PM
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You may have seen my extra build that had a motor box extension. I mocked up the plane and found that the CG will be perfect with the battery in the stock motor box and is easily accessible through the canopy. I am using the magnetic setup for the hatch and the two lower points in the cowl.
This plane will be the smoothest e-conversion ever. There is nothing to change. No reason to mess with perfection!
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Old Jan 02, 2015, 06:08 PM
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So the XQ 4116 look like this;
•Gear Style: Futaba Arms
•Gear Type: Metal - Titanium
•Weight: 1.46oz (56g)
•Size: 40x20x39mm
•Torque: 8.5v - 234 oz/in (16.9 kg/cm), 7.2v - 205 oz/in (14.8 kg/cm)
•Speed: 8.5v - .11 sec, 7.2v - .13 sec



At $45 each these are the best value out there hands down. I typically buy Hitec and Savox but these are quick, smooth and have been holding up well.



I am using the XQ-4120 for the rudder at 291 oz/in on the 8.4 volt setup for $48 each.
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Old Jan 02, 2015, 08:48 PM
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Good job Mchad! Thank for the info...
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Old Jan 04, 2015, 01:13 PM
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So lets Mount the Motor. I made the extension from .063 Aluminum formed three sided box. I think this has much less flex over standoffs and about the same weight. If I remove some material with lightening holes it would be even lighter. Duh....
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