News:



  • February 24, 2024, 06:26:50 PM

Login with username, password and session length

Author Topic: SLC OVER Polyspan?  (Read 106376 times)

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #200 on: September 08, 2022, 08:51:00 AM »
Come on Doug you been on here long enough to know SLC means Super Light Covering.  It has been covered in the finishing section ever since Larry introduce the procedure to us.  It does make for a stronger surface with the combination of materials.  I also believe it is lighter than dope and silkspan.  Some good pictures of results in finishing section. S?P

Now to finish my first cup of coffee. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline 944_Jim

  • 24 supporter
  • Trade Count: (0)
  • Captain
  • *
  • Posts: 832
Re: SLC OVER Polyspan?
« Reply #201 on: September 08, 2022, 03:54:05 PM »
Gentlemen,
Does SLC shrink more in one direction than the other? That is, do I need to be concerned about a grain like silkspan or DocSpan?

Thanks in advance.

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #202 on: September 08, 2022, 05:20:09 PM »
In my experience no. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #203 on: February 07, 2023, 10:46:55 PM »
Check out Doc’s new thread on a refinishing job. Maybe he will put a completed photo here? 😃
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #204 on: February 18, 2023, 07:13:16 AM »
He finished it and it looks great! 👍
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #205 on: February 18, 2023, 03:14:26 PM »
Sorry Larry, but this one is now all Mono-Kote finish over what i couldn't get off of the doc paper and  mylar. D>K

The gray is before.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Online kevin king

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1519
Re: SLC OVER Polyspan?
« Reply #206 on: February 20, 2023, 12:52:47 PM »
Doc you must be quite the prolific builder. Stripping off a dope finish to a completely new monokote finish in no time. Great job.

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #207 on: February 25, 2023, 05:18:24 AM »
SLC is “super light covering”. Look for Phil Cartier in classifieds. It is a Mylar film with heat sensitive adhesive.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #208 on: May 12, 2023, 03:51:22 PM »
Y’know, with 56000 + hits on this thread, we need some more photos of models using this technique. Surely the good Doc isin’t alone in seeing the benefits.

No dope, light weight, tough as nails, what is keeping you guys? 🤠

With light park flyer transparent film over light polyspan it looks like the best free flight finish. And is togher and lighter.

👍
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #209 on: May 12, 2023, 04:15:48 PM »
Now I was just think’in, what if you bonded a layer of carbon veil over the polyspan and then overcoated it with film, it would easilystand up to just about anything and still be very light. 🤠

Spray adhesive to stick the carbon down on the polyspan then the SLC to finish the composite covering.

🤔
« Last Edit: May 12, 2023, 05:10:53 PM by Larry Renger »
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online Dan McEntee

  • 23 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 6781
Re: SLC OVER Polyspan?
« Reply #210 on: May 12, 2023, 09:25:28 PM »
  I think this thread rates getting pinned to the top to make it easier to find. I think it's been well proven!
   Type at you later,
    Dan McEntee
AMA 28784
EAA  1038824
AMA 480405 (American Motorcyclist Association)

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #211 on: May 12, 2023, 09:36:20 PM »
Hey, the old DOC has almost made it bullet proof without the carbon veil.  I think I have posted pics of the planes I have done.  Well my latest is waiting for fuse to be covered. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Dennis Toth

  • 2020 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 4175
Re: SLC OVER Polyspan?
« Reply #212 on: May 14, 2023, 11:30:16 AM »
Question: I want to have a medium blue color as the base, I was thinking I could use medium silkspan as the base then UltraCote Parklite film cover (to save weight over the full UltaCote). Do you think the silkspan will give the parklite additional strength and wrinkle resistance as the SLC seems too?


I know this is a very long thread but it contains a lot of good information and ways to approach covering.

Best,   DennisT

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #213 on: May 14, 2023, 07:17:35 PM »
Try it and let us know.   Never know something until you try it.  Like the mylar applications I have  done it as base coat and on another plane did it as top coat  For me it elleminates a lot of dope with mylar on top. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #214 on: May 16, 2023, 04:48:32 AM »
Question: I want to have a medium blue color as the base, I was thinking I could use medium silkspan as the base then UltraCote Parklite film cover (to save weight over the full UltaCote). Do you think the silkspan will give the parklite additional strength and wrinkle resistance as the SLC seems too?


I know this is a very long thread but it contains a lot of good information and ways to approach covering.

Best,   DennisT
Parklite fim works just fine. I used on a couple of planes and it has stood up well over several years of hard use.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #215 on: December 26, 2023, 08:33:48 AM »
SLC is”super light covering” a thin Mylar with heat sensitive adhesive coating.

Oftenavailsble at sign shops who use for laminating documents.

Any of the “park flyer” films will also work fine.

🤠
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 22719
Re: SLC OVER Polyspan?
« Reply #216 on: December 26, 2023, 08:55:27 AM »
Well the old DOC just tried to get on Phil's Corehouse site.  What I came up with is=t does not show his SLC.  But if a person does a search for Mylar material you will find several places that have shrinkable mylar.   D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #217 on: February 02, 2024, 04:51:22 PM »
Hey guys, 62,000 + views and more every day. Is anyone but Doc Holiday using the technique, and if so, who, where and how did it work for you? C’mon give!  H^^
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Dave Hull

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1886
Re: SLC OVER Polyspan?
« Reply #218 on: February 03, 2024, 02:21:41 AM »
Larry,

I know this is likely to be sacrilege, but I have a dyed-tissue-over-clear plastic job in my garage. Only issue is that it is only one half of a wing. Dunno where the rest went, but definitely missing. So is the fuselage and all the rest. I lucked out and got the wing half with the AMA number still on it. Very nicely dun up, so the prior owner prolly was significantly upset. And since it came from Whittier, I suppose one of the G'Knights would recommunize the individual that is doing yer favorite covering system all backwards. Who knows, mebbe some of them other Knights (Knaves?) have already gotten on him and if he got reformed, he's built everything since in the right order...?

That might be your existence theorem for SLC modified stuntskins....other than Doc himself. After all, he tried doctor paper, pharmacist's paper, kinesthesiologist's paper, and maybe some others.

The Divot

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #219 on: February 05, 2024, 06:17:13 PM »
As mentioned before, the appeal of SLC over tissue, especially using ModPoge adhesive is that no dope or clear coat are needed. Tough, fuel PROOF and high gloss. 🤠

Oh yes, rigid, tough as nails and light weight. What more can you want?

If you really must, it is paint ready with only surface scuffing. No primer needed.

For larger models, use heavier colored films. The tissue under layer will help stabilize the covering in hotter conditions.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Dave Hull

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1886
Re: SLC OVER Polyspan?
« Reply #220 on: February 08, 2024, 12:49:17 AM »
Well, Larry--I'm glad you asked. Since paintin' and finishin' just ain't my thing, I want a covering and paint system that has kinetic autogenesis. That is, I put the wood airframe on the bench in the shop. Then, I unroll the covering right next to it. If the covering takes adhesive, well, I want to open the can or bottle or whatever and put that on the bench, too. Take some cans of paint and do the same deal. Then I want to turn off the light, and shut the door and come back the next day to a bee-uutiful airplane, fuelproof and ready to go.

I mean, since you were asking, "what more could I want?"

The Divot

Offline fred cesquim

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 850
    • Fred Cesquim Aeromodelos
Re: SLC OVER Polyspan?
« Reply #221 on: February 08, 2024, 03:21:57 AM »
i have tried silkspan over SLC, in my opinion too heavy for a competitive F2b plane finish, and after primer, paint and buffing you cannot see that it was paper doped.
i still stick with my paint over monokote method as a light, fast and good finish method.
last picture you can see the mokoted red and paint over, not detrimental to the finish looks.
unless i am missing something here, what is the great advantage of the method of slc/polyspan?

Offline bill bischoff

  • Trade Count: (0)
  • Admiral
  • ******
  • Posts: 1676
Re: SLC OVER Polyspan?
« Reply #222 on: February 08, 2024, 08:45:41 PM »
The idea is to apply the paper, then the SLC. The SLC provides the slick, sealed surface for painting, just like painting over Monokote. The paper or polyspan underneath provides the strength and rigidity, and since it's porous, there are no trapped air bubbles when you apply the SLC.

Offline fred cesquim

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 850
    • Fred Cesquim Aeromodelos
Re: SLC OVER Polyspan?
« Reply #223 on: February 09, 2024, 03:08:11 AM »
The idea is to apply the paper, then the SLC. The SLC provides the slick, sealed surface for painting, just like painting over Monokote. The paper or polyspan underneath provides the strength and rigidity, and since it's porous, there are no trapped air bubbles when you apply the SLC.

then why not cut time and weight going with monokote? it´s already painted with the base color and can be painted over. the strenght is perfect as i have used on i-beams and about 15 F2B competitive planes for a longe time, so no warps, twists or flexing are of any concern.
maybe worth a try on monokote, if properly sealed over the surface and ribs, it will lock and strenght the wing.
i have used a lot on 2-3 meters sailplanes with far less structure and a huge demand on strenght while being high speed towed up and never had an issue.
food for though
regards

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #224 on: February 15, 2024, 09:35:45 PM »
Film over tissue is stonger and lighter. Period! Try it and then comment. If you haven’t tried it you know nothing about it.

I have extensive experience with plain Monokote, and in So. Cal. hot weather it turns to mush.

Give film over tissue a shot and then we can listen to your opinion.

🤠
« Last Edit: February 15, 2024, 09:53:10 PM by Larry Renger »
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline fred cesquim

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 850
    • Fred Cesquim Aeromodelos
Re: SLC OVER Polyspan?
« Reply #225 on: February 16, 2024, 04:35:22 AM »
Film over tissue is stonger and lighter. Period! Try it and then comment. If you haven’t tried it you know nothing about it.

I have extensive experience with plain Monokote, and in So. Cal. hot weather it turns to mush.

Give film over tissue a shot and then we can listen to your opinion.

🤠
I have been pro modelling for the last 35 years of my life with about 300+ planes built ( from c/l to 1/3 scale jets r/c) and while doing that lived on 3 parts of the huge country of Brazil, each of the 3 cities had either inclement sun or cold, and betwen them a tropical zone ( with a mix of annoying hot to chilling cold) so i belive i have a bit of experience with covering materials and finishes, plus, having my own planes weekly exposed to the weather.
film sags? yes, a bit, but a quick heat gun from time to time put it back in shape.
lately i have switched my method and the film is bonded entirely to the plane while covering and this prevented the sag 90%.
never had a structural failure. So my goal  it´s the lightest / good looking finish to achieve, and pretty much film painted do that.
this plane have a 57" wingspan and fully loaded for flight weights 1600 grams. i see no reason to add weight.
anyway, modellers have choices and should work with what aorks better for them and suits the needs
if you´re happy and having sucess with the polyspan/slc method, that´s a nice thing
regards from Brazil

Online Larry Renger

  • 21 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3976
Re: SLC OVER Polyspan?
« Reply #226 on: February 18, 2024, 11:40:17 AM »
I’m not saying Monokote doesn’t work, but film over tissue is better. Try it and see. 🤠
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline fred cesquim

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 850
    • Fred Cesquim Aeromodelos
Re: SLC OVER Polyspan?
« Reply #227 on: February 21, 2024, 10:17:03 AM »
I’m not saying Monokote doesn’t work, but film over tissue is better. Try it and see. 🤠
i still see no point on doing that, i will end up with the outer surface monokote like, and with weight penalty and no strenght advantage.
but whatever works for each one will do
regards


Advertise Here
Tags:
 


Advertise Here