Acrylic Vs. PVC Tubing for WTCs

[toppack]

Great Idea, Mike
I put plastic glue in the small cracks around screw holes. Glue is same as used for plastic models and has low viscosity also, so it goes into cracks. It seemed to work, but not sure yet. The cracks have not got any larger so maybe they are bonded.

[toppack]

I found solvent type Adhesive for Lexan (polycarbonate).
It may be same formula as Plastic glue and an inexpensive alternative for it.

http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=71&product%5Fid=19275

[toppack]

I found out the clear PVC pipe is Not very Clear when in a bright light or in Sun light, so looks like it may not be so good for WTCs. Oh well, I tried. :o
Click Pic:

[Slats]

Toppack -just use Lexan and be done with it already.

better still just buy from David and Mike.
Sorry mate but being at this sub game now 15+years - I am all for taking the tested roads.

Best

John

[toppack]

I like to experiment and learn about new and different construction materials and components, but as of now I'm thinking you guys are correct about polycarbonate (Lexan) being best to use, that's available in Clear pipe.
But I'll never stop looking for 'Something Better', no matter what I'm Doing. The accepted way is Not always the best way. ;)

[Nuke Power]

Let me know when you come up with a better mouse trap or wheel :)

[toppack]

Let me know when you come up with a better mouse trap or wheel :)

Hey, I need to keep some Secrets! :D
I may want to become a Millionaire, when I patent them. ;) :D

[Albion]

Lexan is a superb material, i used to race 1/32 slot cars, their bodyshells are vac formed from 5 or 7 thou lexan sheet. You can take a shell screw it up in your hand and it will bounce back (albeit with a few bends in it)

[toppack]

Yes, I build 2 full-scale experimental aircraft that had bubble-canopies and windshields made of Cast Lexan, great stuff to work with.
It's my understanding that it's stronger if it's 'Cast' polycarbonate, instead of 'Extruded' like the pipe we are using for sub-drivers. It's also more expensive. Extruding induces stresses that can crack easier.
I've been trying to find data on the durability difference in them but not been able to?

[He Who Shall Not Be Named]

Yes, I build 2 full-scale experimental aircraft that had bubble-canopies and windshields made of Cast Lexan, great stuff to work with.
It's my understanding that it's stronger if it's 'Cast' polycarbonate, instead of 'Extruded' like the pipe we are using for sub-drivers. It's also more expensive. Extruding induces stresses that can crack easier.
I've been trying to find data on the durability difference in them but not been able to?

You're over-thinking this, damit. Invest the energy in something else. Please!

Home built aircraft -- my respect for you continues to expand. Did you see the knife-edge recovery when that home-built lost a wing?

David,

[toppack]

You're over-thinking this, damit. Invest the energy in something else. Please!

Home built aircraft -- my respect for you continues to expand. Did you see the knife-edge recovery when that home-built lost a wing?

David,

Oh, I don't let my wondering questions slow me down any, It's just fun to learn these Useless bits if Info, when taking a break from the physical projects . :D
I do have to take a Lot of breaks now, tho. :D LOL :D

No I didn't see that! How the heck could he recover with a Lost wing? :eek: Was it just part of the wing that came off?

[He Who Shall Not Be Named]

Oh, I don't let my wondering questions slow me down any, It's just fun to learn these Useless bits if Info, when taking a break from the physical projects . :D
I do have to take a Lot of breaks now, tho. :D LOL :D

No I didn't see that! How the heck could he recover with a Lost wing? :eek: Was it just part of the wing that came off?

It was crazy/wonderful. Single-engine, small, low wing aerobatic type with big engine. He lost the entire wing, right at the root -- about 800 feet, even if he had a fanny pack he didn't have the altitude. I think he was finishing an outside loop when the wing came off. He throttled back, went into an inverted flat spin. He knew he was dead and wagged everything and throttled up; seemed like he was going to die fighting. Plane went out of frame for a moment, then when we see it again he had gotten it on its side and was flying knife-edge, wing (the remaining half of his wing) high. He made a straight in approach on the runway, knife-edge all the way, about 20 feet off the deck he chops throttle and quarter rolls upright and slams onto the deck. A bit of prop contact but other than that all three wheels on the ground and he rolls into the infield. Wow!

Here it is on UTube:

http://www.youtube.com/watch?v=jd7OSTxUD8Q

Wonder what the inside of that cockpit smelled like?

David,

[toppack]

WOW, Amazing bit of flying, WOW!!! :eek:
When he was heading toward the crowd there were probably others that didn't smell so good either. :)
Thanks for the video.

[He Who Shall Not Be Named]

WOW, Amazing bit of flying, WOW!!! :eek:
When he was heading toward the crowd there were probably others that didn't smell so good either. :)
Thanks for the video.

Indeed. That buzz-saw coming in -- you had to ask: "Is he still driving that thing, or is God going to take out the tank-farm too?".

[junglelord]

Yes, I build 2 full-scale experimental aircraft that had bubble-canopies and windshields made of Cast Lexan, great stuff to work with.
It's my understanding that it's stronger if it's 'Cast' polycarbonate, instead of 'Extruded' like the pipe we are using for sub-drivers. It's also more expensive. Extruding induces stresses that can crack easier.
I've been trying to find data on the durability difference in them but not been able to?

I worked for Rohm and Haas for 5 yrs, my dad for 36yrs in Morrisburg Ontario.
I worked with "cast" acrylic. My dad is a Lab Tech.
They had also had "extruded" sheet, which we would help start the sunday night shift
with the inital extrusion sheet.

I worked mix and fill for cast acrylic in the MMA form. I worked oven room. I worked mold room. I worked finish and packing. I did it all. We made cast Plexiglas, Implex was extruded. Pretty cool stuff.