stunthanger.com
General control line discussion => Open Forum => Topic started by: Steve Helmick on September 26, 2014, 12:09:03 AM
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Being a fisherman, I keep my eye open for potentially kewl new "stuff". The following just dropped into my email, and I thought I'd share. Probably won't be in the stores next Spring, but in any case, I wouldn't run out and buy a 1,000 yard spool of whatever is your favorite fishing line for 1/2A lines. It sounds awfully good, which in itself always makes me skeptical. But there is some progress being made in fishing line technology, so look for it! y1 Steve
> A new line so thin and strong that it could replace braid is about to be launched into the market.
> The company behind the development is World Fishing Tackle, which has been working on the secret project for 2.5 years.
> The line, called Gliss, is made from extruded hmpe fibres and...combines the qualities of both a monofilament and a braid.
> “Gliss looks like a mono, but has huge advantages, including almost zero stretch. Other lines have at least three times more stretch. The low stretch means it is incredibly sensitive... It also has extremely low diameter-to-breaking strength ratios."
> ...it can be produced far more quickly and cheaply than braid...takes around 100 hours to produce 1,000 meters of braid...but he can manufacture the same length of Gliss in a matter of minutes
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Wounder how it holds a knot?
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I bought some 70 lb test Spectra from an E-Bay vendor from China, made 60' lines with it for my S-1 Ringmaster. Test pulling first set I made broke at 30 and 35 lbs pull. My pull method using a fishing scale I am told does not mimic the manufacturer's, which is done gradually under automated control. The lines stretched almost a foot when doing my "break test". I would have expected it to break at least more than under half its rated strength.
First flight with those lines was the wildest flight of my life. One line stretched 4 inches more than the other. I was holding full down on the handle, and the S-1 was maintaining a high circle at least 30 feet above me. Flight was dizzying, laps were half the usual 4-1/2 to 5 seconds. When the engine quit, I had to manually pull the down line with my other hand so I could land.
Talking to others, there must have been some serious quality control issues with the Spectra I purchased. I don't know if I will give Spectra a try again from say a quality vendor. The fact this new stuff stretches very little holds promise.
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I have been told that the Spectra from China can have very different properties than that produced here.
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I bought some 70 lb test Spectra from an E-Bay vendor from China, made 60' lines with it for my S-1 Ringmaster. Test pulling first set I made broke at 30 and 35 lbs pull. My pull method using a fishing scale I am told does not mimic the manufacturer's, which is done gradually under automated control. The lines stretched almost a foot when doing my "break test". I would have expected it to break at least more than under half its rated strength.
First flight with those lines was the wildest flight of my life. One line stretched 4 inches more than the other. I was holding full down on the handle, and the S-1 was maintaining a high circle at least 30 feet above me. Flight was dizzying, laps were half the usual 4-1/2 to 5 seconds. When the engine quit, I had to manually pull the down line with my other hand so I could land.
Talking to others, there must have been some serious quality control issues with the Spectra I purchased. I don't know if I will give Spectra a try again from say a quality vendor. The fact this new stuff stretches very little holds promise.
Its because you bought Chinese "knock off" Spectra. You have to buy Power-Pro brand made in the US. I have been using it on 1/2a planes and combat planes without any issues for 2 years. There is a lengthy thread on here discussing it. Power Pro even issued a warning that China was selling Spectra with their logo on it and it was not up to the same standard as US manufacture. Don't give up on Spectra lines, when you get the right ones, you will love how durable and cheap they are. Hope this helps, Mike
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The word other collectors use is
COUNTERFEIT !
Ward-O
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I have been using 30lb Sufix spectra lines all year with my 1/2a stuff and it is awesome. Well over a hundred flights on one set, and they are still great. Zero complaints about spectra. I had both of my .008 sets of stainless lines fail and crash planes this year.
I'm looking forward to trying some 100lb test spectra on larger, .20-.35 size planes soon.
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If you buy Spectra line, make sure it's made in the USA, because there is a lot of line claiming to be made of Spectra from China that isn't Spectra at all. Some countries don't honor trademarks and are perfectly willing to sell bogus stuff to anybody that is willing to buy it. What I read was to buy your line from established vendors, like BPS, Cabela's, Tackle Warehouse, etc. Buy fishing line from eBay and you are taking a chance. n1 Steve
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I have tried several types for indoor flying.
But the best was Nano Fill.
I always had some oscillation after the wingover.
Whit these lines it was immediately flat.
With some other modifications the indoor Gee Bee flew more predictable than my outdoor plane.
At the end of the winter I was able to fly the maneuvers at 30 cm !!!
http://lijnbesturing.nl/index.php/werkplaats/electro/214-bouw-instructie-indoor-geebee
http://lijnbesturing.nl/index.php/informatie/fotos?view=album&album=5963928487880164913&page=1
http://lijnbesturing.nl/index.php/informatie/fotos?view=album&album=5963928980325898081&page=1
Greetings Robert-Jan
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“Gliss looks like a mono, but has huge advantages, including almost zero stretch. Other lines have at least three times more stretch. The low stretch means it is incredibly sensitive... It also has extremely low diameter-to-breaking strength ratios."
Spiderwire also made a "solid" HMPE line that was supposed to be strong, under the brand name Fusion. It was strong, but very sensitive to shock loads. Using 30lb. test(~.012 in.) a 7 oz. half A plane that went slack on the lines and cut across the circle broke both lines.
Making it "fusion" negates the advantages of having something like 5000 filaments in the braid.
Properly manufactured Spectra lines have the same breaking strength and stretch as the same diameter steel lines- about 1.5in. of stretch at 22kg(44lb) pull test for F2D combat.
The Chinese stretchy stuff was probably simply plain old polyethylene which would be stretchy as hell and very weak. The gel-spinning technology used in Spectra and Dyneema products such as Power Pro or Sufix orients the molecules. That essentially makes the fiber into a solid strand of molecules with all the stretch taken out.
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One trick to improve breaking strength is to wet the thread before tightening the knot. Big difference! y1
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Being a fisherman, I keep my eye open for potentially kewl new "stuff". The following just dropped into my email, and I thought I'd share. Probably won't be in the stores next Spring, but in any case, I wouldn't run out and buy a 1,000 yard spool of whatever is your favorite fishing line for 1/2A lines. It sounds awfully good, which in itself always makes me skeptical. But there is some progress being made in fishing line technology, so look for it! y1 Steve
> A new line so thin and strong that it could replace braid is about to be launched into the market.
> The company behind the development is World Fishing Tackle, which has been working on the secret project for 2.5 years.
> The line, called Gliss, is made from extruded hmpe fibres and...combines the qualities of both a monofilament and a braid.
> “Gliss looks like a mono, but has huge advantages, including almost zero stretch. Other lines have at least three times more stretch. The low stretch means it is incredibly sensitive... It also has extremely low diameter-to-breaking strength ratios."
> ...it can be produced far more quickly and cheaply than braid...takes around 100 hours to produce 1,000 meters of braid...but he can manufacture the same length of Gliss in a matter of minutes
Sounds like a great kite line also!!! What # lbs. 50 pound etc? GLISS Thanks Steve!
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Nice Kite. Wind powered 1/2A stunter? LL~
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It appears to me that anytime you reduce stretch, you also reduce shock strength. I tried several braided Spectra lines before I found one I liked. I tried some of the unbraided Spectra lines("Fireline" and "Spiderwire") and didn't like them. I have tried fluorocarbon line and am not crazy about it. I looked at the "Nano Fil" at the Sportsman's Show and was kinda impressed but also displeased with the price, so I did some research online and have yet to buy any. Shock strength was said to be a problem. All of these new lines seem to require new knots, and/or using CA to glue the knot prior to use. I'm too old to bother with learning new knots, and I'd rather "keep my line wet". #^ Steve
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Robert-Jan:
Those were great web-sites. What's really fun is when I hit the "translate to English" button and then try to read: "Between Condition is that there is no gap is definitely present." and "Cut some of the nipples off to allow it to fit." Whoa!!
Actually, properly translated (not by Google or Microsoft) this, along with the GeeBee plans, would be a great article for Stunt News or Control Line World.
Scott
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Tanks,
It takes a lot of time to maintain a website.
So it is always nice to get some compliments.
Please don't cut of your nipples.
Check also the DIY timer.
http://lijnbesturing.nl/index.php/werkplaats/electro/de-zelfbouw-timer
And the speed 400 on copper lines
http://lijnbesturing.nl/index.php/werkplaats/electro/speed-400-combat
Greetings Robert-Jan