Author Topic: Thank you Larry Renger (Read 3336 times)

Mike Griffin · « **on:** August 17, 2016, 02:29:30 PM »

Larry Renger had quite an extensive thread in the forum not to long ago about covering a wing with Polyspan and then ironing SLC over it. I just got through covering a wing this way and I have to tell you, Larry really hit on something with this. Here a a couple of pictures of a Primary Force wing I just finished using that method.

Mike

goozgog · « **Reply #1 on:** August 18, 2016, 03:47:49 AM »

YES!
Thank you Larry Renger!

Besides sharing unique
and innovative information,
Larry was extremely
generous with his time
when he helped me with
my Cox Spitfire replica.
This project could only
happen with Larry's help.
Many thanks Mr. Renger!

http://stunthanger.com/smf/12-a-building/cox-spitfire-replica-build-flight-video/

Cheers! - Keith Morgan

Perry Rose · « **Reply #2 on:** August 18, 2016, 05:55:54 AM »

Is it going to be a clear finish or what?

Mike Griffin · « **Reply #3 on:** August 18, 2016, 07:23:10 AM »

Hi Perry. It will be painted, I just have not decided what color yet. According to Phil at Core House you can paint right over it.

Mike

john e. holliday · « **Reply #4 on:** August 18, 2016, 11:42:41 AM »

Before painting make sure you use a scouring pad to dull the surface. I learned the hard way using paint on SLC.

Larry Renger · « **Reply #5 on:** August 18, 2016, 12:23:23 PM »

That looks great, Mike! Good job.

How did you attach the Polyspan?

Keep us posted on how the painting comes out.

Mike Griffin · « **Reply #6 on:** August 18, 2016, 03:09:49 PM »

Larry all I had was some Nitrate dope and I just put three coats around the perimeter of the wing and then used thinner to attach the polyspan. Then I just shrunk the polyspan and ironed the SLC down on the polyspan. It seems almost impervious to punctures and is very light.

Mike

Larry Renger · « **Reply #7 on:** August 18, 2016, 07:04:43 PM »

That was the point of the plan! No repetitive coats of dope then filler. Fast, clean, easy and light. What is not to like?

Motorman · « **Reply #8 on:** August 18, 2016, 07:16:05 PM »

Instead of SLC you could use Coverite microlite film if you want color. Also, you can use polyspan lite since you're not going to dope the polyspan and it comes out plenty strong. It comes out stronger and lighter than monokote.

MM

Larry Renger · « **Reply #9 on:** August 18, 2016, 07:28:33 PM »

Amen, but not let's confuse a convert.

Besides, I want to see how the painting goes!

Chris Keller · « **Reply #10 on:** August 18, 2016, 07:44:31 PM »

Whats the point of the polyspan? Strength?

Sent from my iPhone using Tapatalk

Mike Griffin · « **Reply #11 on:** August 18, 2016, 07:55:04 PM »

Chris, in my opinion yes, for strength. Larry may chime in here with additional benefits but I look at it as a substrate for the SLC.

Mike

Larry Renger · « **Reply #12 on:** August 18, 2016, 08:01:06 PM »

The torsion resistance becomes phenominal. Also, I have had NO wrinkling in So.CA or Tucson heat after several days, even sitting in the car. It is working for me!

David_Stack · « **Reply #13 on:** August 19, 2016, 07:24:14 AM »

Rusty;

Here you go: http://stunthanger.com/smf/paint-and-finishing/slc-over-polyspan/

r/
Dave

Larry Renger · « **Reply #14 on:** August 23, 2016, 07:34:43 PM »

Sadly, I have also landed inverted on asphalt twice with my Ringmaster. There is the faintest scuff mark on the outboard wingtip. As John Candy would say in "Cars, Trains and Airplanes", you can rub that out.

The better news is that I now have the engine working as it should.

Pat Chewning · « **Reply #15 on:** August 23, 2016, 09:42:27 PM »

What is "SLC"

Mike Griffin · « **Reply #16 on:** August 23, 2016, 10:08:04 PM »

Pat,

SLC. Is a clear Mylar film that you apply and shrink with a covering iron.

Mike

Paul Wescott · « **Reply #17 on:** August 24, 2016, 06:49:36 PM »

Quote from: Pat Chewning on August 23, 2016, 09:42:27 PM

What is "SLC"

10ft = $6.00
100ft = $35.00 + shipping

http://home.earthlink.net/~philcartier/webcat/pricelist.html

Paul W.

Larry Renger · « **Reply #18 on:** September 08, 2016, 11:35:49 PM »

Any paint on this puppy yet?

david beazley · « **Reply #19 on:** September 09, 2016, 03:33:06 AM »

Could the polyspan be painted before the SLC applied?

Mike Griffin · « **Reply #20 on:** September 09, 2016, 11:35:28 AM »

Larry I have been up to my ass in Alligators getting this new KA10 Kit out and put the Primary Force (the wing I show in this post using your method) on Hold. As soon as I have these Kits on the way, I will get back to the PF and get some paint on that wing.

Mike

Larry Renger · « **Reply #21 on:** September 09, 2016, 03:42:18 PM »

David, the whole point of this process is to eliminate all the dope and filler steps. The SLC takes the place of all that.

I now use Microlite film instead of SLC, and need no paint at all! Pretty good selection of solid and transparent colors are available. My Ringmaster is covered that way and has survived a pair of inverted landings on asphalt with no damage! Also, the finish has stayed wrinkle free in hot sun and car storage.

By bonding the film to the fiber you get a composite material with better characteristics than either fiber or film alone. And, it is a really lightweight finish that is quick and easy to do.

If you do want a painted finish, the SLC is primer ready after a light scuffung with a scotch pad. No base coats and filler required.

david beazley · « **Reply #22 on:** September 09, 2016, 05:28:00 PM »

Thanks Larry.

eric rule · « **Reply #23 on:** September 09, 2016, 06:32:11 PM »

Larry:

As someone who is intimately familiar with landing upside down I would like to make you aware of a special model I ran off for another person like you and I who does not know up from down. It is called Mirror/Mirror and is based upon a Ringmaster.

Best wishes
Eric Rule