Fun with fiberglass

For general discussion of the Just Aircraft family of aircraft.
Includes: Highlander, Escapade, Summit and SuperSTOL.

Moderator: scubarider2

Fun with fiberglass

Postby rmullins » Fri Feb 27, 2015 2:15 pm

Weather too bad to fly so the next best thing..add improvements.

dash.jpg


dash done.jpg


mold.jpg


IMG_20150218_173241177 (640x480).jpg
Rick Mullins  #144
Cincinnati, Oh
User avatar
rmullins
Veteran Member
 
Posts: 321
Joined: Wed Jul 16, 2008 8:01 pm

Re: Fun with fiberglass

Postby moving2time » Fri Feb 27, 2015 4:49 pm

Rick, Very interesting frame work. Did it make it any easier to install the avionics? Obviously an I-Pad on the right. Looks like a portable of some sort on the left. The photos make the fairing at the Lift Strut look rather large. Interesting to see how much you pick up. I'm thinking that anything cleaning up the drag will add to your top end. How smooth is the feathering into the wing? Looks like a nice job and definitely a creative approach to cleaning the strut attachment up. When my turn comes I want to look into making a flexible boot. I would hope to keep it all below the leading edge. Your work may prove that it may not be possible. More negative weather up hear this weekend and even calling for more snow. Help! Hope you and Carl and Bob are doing well. Joe B
moving2time
Veteran Member
 
Posts: 191
Joined: Fri Oct 15, 2010 5:42 pm

Re: Fun with fiberglass

Postby rmullins » Fri Feb 27, 2015 8:03 pm

It didn't change the avionics install for me that much from my original panel but I would think the STOL guys would appreciate the extra space because they have an extra brace back there. On the left is my phone running a Android app I found just last week called Avare. Pretty cool aviation navigation software with sectionals, and it's free! The main reason I pulled the panel back was to get it closer to these old eyes.

I noticed the picture seemed to make the fairing look bigger than it is. I tried to make it as aerodynamically clean as i could (at least to my eye). I'm anxious to fly it to see if it eliminates the turbulence you can see on the fabric behind that strut. Stay tuned...
Rick Mullins  #144
Cincinnati, Oh
User avatar
rmullins
Veteran Member
 
Posts: 321
Joined: Wed Jul 16, 2008 8:01 pm

Re: Fun with fiberglass

Postby gkremers » Sat Feb 28, 2015 8:26 am

Rick,
Very nice work, I'm interested to hear how the strut fairing helps out in flight.

Most people are looking forward to the spring but I'm kind of enjoying it. The Highlander on skis has been fun this winter.

Take care
Gary
User avatar
gkremers
Veteran Member
 
Posts: 398
Joined: Sun Aug 08, 2010 8:06 am
Location: Michigan

Re: Fun with fiberglass

Postby User GDS » Sat Feb 28, 2015 6:44 pm

Looks great. I'm in the same mode, have a couple of projects going. (Thanks, GKremers, my wing root closure looks like yours, only not painted yet)

I'm ready to build some fairings for the aileron pulleys, and don't have much fiberglass experience. Can you recommend how to make a mold for the glass? I was thinking of taking some rigid foam and pressing it up into the pulley for a starting point, then hogging out the foam until I've got an aerodynamic shape that fits. Maybe do the lay-up over some object on a table?

thanks, Gary
GDS
So Cal
Highlander #232
Rotax 912ULS, Dynon Skyview
User GDS
Veteran Member
 
Posts: 304
Joined: Sun Jul 01, 2012 11:59 am
Location: Big Bear Airport

Re: Fun with fiberglass

Postby danerazz » Sat Feb 28, 2015 7:30 pm

You can use almost anything as a fiberglass mold. Foam, metal, wood, plaster, concrete, clay, any inanimate objects ( tough to get live stuff to hold still until the epoxy cures). I like clay.
Dane

Paralysis by analysis
#242
danerazz
Veteran Member
 
Posts: 866
Joined: Tue Aug 18, 2009 9:33 pm
Location: Bangor

Re: Fun with fiberglass

Postby User GDS » Sat Feb 28, 2015 9:59 pm

Thanks, I've got foam and plaster, I'll start there.


The main reason I pulled the panel back was to get it closer to these old eyes.

I go for high-tech solutions. I take a picture of the instruments with my phone, text it to my daughter with a note, "I know you're busy at work, but does everything look OK to you?"
GDS
So Cal
Highlander #232
Rotax 912ULS, Dynon Skyview
User GDS
Veteran Member
 
Posts: 304
Joined: Sun Jul 01, 2012 11:59 am
Location: Big Bear Airport

Re: Fun with fiberglass

Postby Jack L » Sun Mar 01, 2015 6:32 am

Thanks, I've got foam and plaster, I'll start there.


GDS, I bought 3' Styrofoam balls and clay from a craft store to make a plug and mold. I cut the ball in half and glued it to a piece of melamine and used the clay to form the rest of the profile. Yellow is the plug and white is the mold.

Pulley covers.JPG
Jack L
Veteran Member
 
Posts: 104
Joined: Sun Apr 27, 2014 12:10 pm

Re: Fun with fiberglass

Postby Tralika » Sun Mar 01, 2015 10:43 am

Gary,
Here's a link to an EAA Hints for Homebuilders video on making molds from foam. I've used the technique several times. It's very easy, fast and cheap.

http://eaavideo.org/video.aspx?v=1881622714
John Nealon
Wasilla, Alaska
Highlander Extreme #191
mykitlog.com/jnealon
Tralika
Veteran Member
 
Posts: 201
Joined: Thu Oct 08, 2009 12:49 pm
Location: Wasilla Alaska

Re: Fun with fiberglass

Postby barry767 » Sun Mar 01, 2015 3:51 pm

I've noticed fluttering of the lower wing fabric just aft of the wing strut attach point, indicating lots of drag there. Thinking of making a fiberglass fairing to correct this. Also considering covering my extreme gear with with a removable fairing made of .025 6061T4. Lots of drag there too I'm told. Anyone done this?
User avatar
barry767
Seasoned Member
 
Posts: 78
Joined: Fri Jul 29, 2011 10:06 am
Location: San Diego, CA

Re: Fun with fiberglass

Postby User GDS » Sun Mar 01, 2015 10:01 pm

Thanks guys, now I've got a plan.
GDS
So Cal
Highlander #232
Rotax 912ULS, Dynon Skyview
User GDS
Veteran Member
 
Posts: 304
Joined: Sun Jul 01, 2012 11:59 am
Location: Big Bear Airport

Re: Fun with fiberglass

Postby Johnny C! » Fri Mar 06, 2015 2:00 pm

Rick,
Could you post a few more detail
photo's fo your strut fairing?

Great job!

Thanks!

John




rmullins wrote:Weather too bad to fly so the next best thing..add improvements.

dash.jpg


dash done.jpg


mold.jpg


IMG_20150218_173241177 (640x480).jpg
There are many things that happen really fast when you are
flying an airplane. There is no sense in rushing any of the others.

I would much rather be looking down at the runway, than up at it.

Duane Sorenson & Rick Norton Gone West 6/8/09. Godspeed
User avatar
Johnny C!
Veteran Member
 
Posts: 815
Joined: Thu Sep 07, 2006 9:55 am
Location: Brevard, NC

Re: Fun with fiberglass

Postby moving2time » Wed Mar 25, 2015 5:14 pm

Rick, Have you been able to get any time in the air with your new wing strut fairings? Any thoughts on the performance & value? We are still struggling with the weather up here. There has been a couple of flyable days but then our runways have been plowed and have dried off while you may still have snow in the grass or be to wet to get out. Looking forward to hear your assessment of the mods. Joe B
moving2time
Veteran Member
 
Posts: 191
Joined: Fri Oct 15, 2010 5:42 pm

Re: Fun with fiberglass

Postby rmullins » Wed Mar 25, 2015 8:26 pm

I haven't had a chance to fly it yet. The weather has kind of sucked here also. Our field is pretty sloppy plus I got side tracked helping a friend fix a truck he rolled.. Sorry Johnny, I wasn't ignoring you, I was just waiting until I had some more info to report. I don't know how much cleaning up the plane will help...I read a great quote that said cleaning up a plane will not turn a tractor into a racecar... but I would be pleased if I could squeeze another 10 mph out of it. A friend put me onto a website about the "Mystery Pacer". A guy claims to have sped up a Pacer from 120 mph to 155. Most of the increase he says came from cowling improvements. It made me think about the big hole under our cowlings to accommodate a nosewheel. I know Lynn Gardner closed it up and told me she could hear the difference in wind noise, but I don't know if it increased the speed. Has anyone here experimented with that?
Rick Mullins  #144
Cincinnati, Oh
User avatar
rmullins
Veteran Member
 
Posts: 321
Joined: Wed Jul 16, 2008 8:01 pm

Re: Fun with fiberglass

Postby Tralika » Wed Mar 25, 2015 8:56 pm

Did you read the article in Kitplanes about offsetting cooling drag with a radiator duct?

http://www.kitplanes.com/issues/32_3/bu ... 198-1.html
John Nealon
Wasilla, Alaska
Highlander Extreme #191
mykitlog.com/jnealon
Tralika
Veteran Member
 
Posts: 201
Joined: Thu Oct 08, 2009 12:49 pm
Location: Wasilla Alaska

Next

Return to Just Aircraft