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Author Topic: '1/8A LaStick' Build  (Read 1509 times)
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steveair2
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« on: January 18, 2015, 10:42:42 PM »

I finally decided on this winters project.  The '1/8A LaStick'.  Designed by Dave Fritzke & Gene Rock, based on a Fred Reese design.
I'll be converting it from Cox .020 power to electric. I'm trying to keep the modifications to a minimum. There will be a few.
Pictures aren't working for me now,  I'll get them up soon.
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steveair2
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« Reply #1 on: January 19, 2015, 06:36:20 PM »

Ribs and wing structure going together. First modification is taking out the dihedral.
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steveair2
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« Reply #2 on: January 20, 2015, 09:03:47 PM »

Getting a bit more done.
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steveair2
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« Reply #3 on: January 22, 2015, 08:50:30 PM »

Second modification, I changed the leading edge from 1/8th square to 3/16 x 1/4.
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PlaneFoolish
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« Reply #4 on: January 22, 2015, 09:50:17 PM »

What do you use for a flat surface?  It appears you get very strong pin retention.  Thanks
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steveair2
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« Reply #5 on: January 22, 2015, 10:19:34 PM »

Hi Plane,  thanks for checking out my build.  This particular building board is made from a piece of 3/4" white pine shelving that I checked for flatness with my aluminum yard stick.  Then I glued a piece of 1/2" drywall to it.  Drywall is my preferred building surface.  It works great.
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PlaneFoolish
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« Reply #6 on: January 23, 2015, 08:44:16 AM »

Thanks.  I'll give it a try.
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carpetbagger
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« Reply #7 on: January 23, 2015, 12:54:51 PM »

Taking notes on your mods since the 1/8A LaStick is on my list.
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steveair2
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« Reply #8 on: January 24, 2015, 10:59:44 AM »

Thanks Carpet,  this is the smallest R/C model I have ever built.  I've built rubber free flight larger than this one.
I was looking for something quick, easy and economical.  My model building time and budget is limited.  If it fly's well
I may use it for a base for an original design I have bouncing around in my head.
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steveair2
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« Reply #9 on: January 25, 2015, 02:10:01 AM »

Third modification, added center section vertical webbing on the rear of the spar.
Fourth modification, added leading edge blocking for leading edge wing screw.
Fifth modification, lengthened each wing tip 5/8th of an inch to increase the wing span 1 1/4 inches.

I'm also showing how I use masking tape to protect the ribs while sanding the leading and trailing edges to shape.
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dputt7
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« Reply #10 on: January 25, 2015, 03:27:00 AM »

    Hi Steve, that's a great idea with the masking tape, It looks like you are using a "grit stick" ( my Name for it) to sand it with, I have one that I bought many years ago and would love to get a couple more, any chance you know where they are available.
                                                                                                                             regards Dave
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steveair2
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« Reply #11 on: January 25, 2015, 09:23:36 AM »

Thanks Dave.  Try this link http://www.permagrit.com/dealers.php?osCsid=1fmrcuvbprv5pg6pv3eblto7o7
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PlaneFoolish
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« Reply #12 on: January 25, 2015, 10:27:51 AM »

I am a relatively new builder, even though "long of tooth" and you are giving me some nice tips and tricks in this build.  Thanks for pics and keep them coming.
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dputt7
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« Reply #13 on: January 25, 2015, 06:52:59 PM »

  Thanks Steve, Ive just ordered some to replace my old one, the spar slotters look handy. Kudos
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steveair2
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« Reply #14 on: January 25, 2015, 09:38:14 PM »

Much thanks guys for your input, interest and compliments.  I need to remember to try to include tips and tricks on my build threads.  I'm no master modeler by any means, but I have been building models for a little over forty years.

I thought I would be further along than I am today.  I did detail wood work to the center section and wing tips, I also made and hinged the ailerons.
In the picture you can see I cut one CA type hinge into three smaller hinges. I cut the corners at a forty five degree angle to make them easy to insert.
Also, tip for the day;  dollar store fingernail files make great sanding tools for small models.

I increased the chord of the ailerons from 5/8th inch to 13/16th of an inch.  At this point I'm going to stop counting the modifications I do to this design.
At the beginning of this thread I said I would keep the modifications to a minimum.  I think I'm the type of guy that starts out folding a paper airplane, and ends up
trying to build a 747.  IT"S FUN! 
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steveair2
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« Reply #15 on: January 25, 2015, 09:49:19 PM »

I got ahead of myself.  Pictures for today.  The hinging tools shown were not used on this model.  I guess they work well for larger models, but I used my eye and a number eleven exacto knife for these hinges.  It worked better for me.
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PlaneFoolish
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« Reply #16 on: January 26, 2015, 12:01:16 PM »

I also use the building aid pictured in the pint glass  Grin.  When I'm thinking of what to tackle next, it comes in handy.
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steveair2
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« Reply #17 on: January 26, 2015, 07:52:15 PM »

Beer and Balsa!  They go hand in hand!
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steveair2
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« Reply #18 on: February 01, 2015, 02:01:22 AM »

working on aileron linkages.  I'm using printer paper and Titebond glue to reinforce the center section and aileron linkage areas.
.
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steveair2
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« Reply #19 on: February 17, 2015, 10:00:03 PM »

This is my second model to use Solar Film Lite.  I really like this stuff. It really likes to stick to itself and takes getting used too. 
I like the low heat and it conforms to small radius well.  I went ahead and covered the wing before starting the fuselage.
My thinking is to break up the tedious covering so I'm not covering the whole model at one time.
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steveair2
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« Reply #20 on: February 22, 2015, 01:18:57 AM »

Fuselage going together.
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steveair2
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« Reply #21 on: February 26, 2015, 10:16:16 PM »

More progress on fuselage.  Modifications made are........

Moved firewall forward 1/2" to account for shorter electric motor.
Moved bulkhead at trailing edge of wing aft 5/16" to account for increased wing chord.
Moved tail post aft 1 1/2" to account for slight increase in stabilizer area.
Added triangle stock to account for, I like rounded corners.
Converted from nose dragger to tail dragger.

Funny thing,  the other day I stopped at Hobby Lobby to see if their limited balsa supply included triangle stock.
I was happy to find that they had the 3/8" stock that I was looking for.
Yesterday I tried to cut a piece to fit, only to find that there was no right angle on the stock!
I've never seen triangle stock that was not a right angle.  I'm saving it in case I build a model with triangular bulkheads!
I had to make the drive across town to Hobby Town to get the right stock.
Good hobby shops are getting rare.  SAD!
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steveair2
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« Reply #22 on: March 01, 2015, 02:02:31 AM »

Sheeted and rough shaped the fuselage, and built stabilizers.  Both stabilizers were enlarged slightly and changed from solid 1/16" sheet to framed up 1/8" sticks.
Came up with a neat way to make a round vertical stabilizer.  It came out very strong. I'll cover it as shown in the picture with no added structure.
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steveair2
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« Reply #23 on: March 08, 2015, 01:23:33 AM »

Hinged and covered stabilizers.  I really like the Solarfilm Lite covering!
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steveair2
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« Reply #24 on: April 12, 2015, 05:21:37 PM »

I wish I had more time to build models!  Installed servo rails, push rod tubes and tail wheel.  Mocked up landing gear from 1/16" welding rod.
Installed motor.
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