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Old Jun 05, 2014, 08:19 AM
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Joined Sep 2011
128 Posts
Redwing MXRS Must Read

I posted a while ago about the 1st FS RC Flight Training School putting the MXSR into their fleet. They just reported back that it is the best plane in their fleet. They know their planes and have tested just about every plane made. I know it is a long post but I think anyone with the MXSR will want to check out his set-up for this plane. It really shows you the detail it takes to properly set up a plane for IMAC along with a few cool mods. Here are his comments...
"Hi Tim.

Sorry about the delay getting back to you, but I wanted to wait until I could give a report on the MXSR. I spent a full day working on the setup and the performance I've been able to achieve a level of handling that exceeds just about everything in the school training fleet. I used the airplane in last week's advanced aerobatic class and each guy stated that because of the performance and convenient size (they fly 100cc and larger back home), each was going to order one for themselves. Indeed, they felt that the airplane flew as well as a 40% without nearly the hassle/expense!

I've optimized the MXSR for precision IMAC style aerobatics using the following setup:

Ail travel/expo: 5/8" / 25%
Elevator travel/expo: 7/8" / 25%
Ruder travel/expo: 2-1/2" / 30%

CG = 1" forward of the edge of the wing sheeting.

I placed a 3/32" shim under the top of the wing recess at the trailing edge to fill the gap and ensure the wing sits at the same angle every time.

I lowered both ailerons 1/16" from neutral (tricks wing into acting like it has positive incidence and thus neutral pitch stability)

I opened up the front of the cowl to expose the entire front of the engine cylinder to improve cooling.

I also installed 1/2" triangle vortex generators 3" in front of the aileron hinge line to help the airplane fly more like it's on rails and provide a more linear control response. Of course, installing thicker ailerons would be more optimum and make the VG's unnecessary, but is obviously not an option with most finished ARFs.

The airplane needed only small rudder-aileron/elevator mixing flying with the above settings.

I will do my best to share with as many people as I can our success with your MXSR. Pics will soon follow!


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Last edited by mchadwick63; Aug 10, 2014 at 10:11 PM. Reason: corrected ele throw
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Old Jun 07, 2014, 10:55 PM
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Joined Jul 2013
7 Posts
Awesome! His students will be pros after flying on this beast.
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Old Jun 07, 2014, 11:07 PM
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United States, TX, Elgin
Joined Aug 2005
57 Posts

Dave is "spot on"; this plane is a diamond in the rough. I first had a chance to get a pull on Chris Boultinghouse's (RC Today Show) MXS-R down in Austin. The plane was so predictable and capable of any maneuver. "Redwing RC" has done it again!
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Old Jun 07, 2014, 11:45 PM
Team RedWing RC
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United States, NY, Albany
Joined Aug 2013
440 Posts
Cool! Can't wait for pictures/videos.
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Latest blog entry: FancyFoam MX2 EPP Build!
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Old Jun 14, 2014, 03:32 PM
Back Roads Outlaws
Joined Feb 2012
11 Posts
Throw a VVRC 40CC Twin in it if you really want to have fun
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Old Aug 10, 2014, 10:11 PM
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Joined Sep 2011
128 Posts
The correct throw on the elevator is 7/8".
I noted on the original post that the ele spec was not correct.
I just got around to emailing Dave at 1sr RC flight School and he replied in like 10 minutes.
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Old Aug 12, 2014, 10:39 AM
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los36's Avatar
United States, TX, The Colony
Joined Nov 2012
357 Posts
thanks for the update.
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