1/2 a Spectra line size?

[kevin king]

Can someone please tell me the Spectra line size for 1/2a please?

[Steve Helmick]

Somewhere between 10 lb and 20 lb test should work well. IMO, the Power Pro "Slick 8" would be a prime choice.             

I always suggest buying from a legit brick & morter store, even if online purchase. There have been reports of Chinese counterfeit "spectra line" that had zero spectra content...bought from eBay or AMAzon. I tend to buy from www.TackleWarehouse.com, but you should have a fishing supply place in Canada that can get it to you faster, without any of the usual "storage" at Customs. https://www.tackledepot.ca/ or https://thefishinhole.com/  Steve 

[kevin king]

THANKS STEVE!

[Brad LaPointe]

Kevin check out Canadian Tire , they carry a selection up to around 40# . Blue shows up ok if the yellow isn’t available. Green is really hard to see .

Brad LaPointe

[Dan McEntee]

Can someone please tell me the Spectra line size for 1/2a please?

   Steve is correct in his assessment. But just weigh the airplane and the pull test if still 10Gs. So a 10 ounce airplane is 100 ounces. Divide that by 16 and you get 6.25 pounds pull test.10 pound line should be finem and I agree with Steve on getting the genuine article from the local Bass Pro Shop of Cabela's. They seem to restock fairly frequently but they have ordered yellow for me when I wanted it for free delivery to the store. I'm flying my .061 Doodlebug Brothers airplane on 10 pound line now and I'm up to 47 feet. I can't imagine flying this on that long  of .008" steel lines!! They would be a nightmare to take care of !!!

 Type at you later,
  Dan McEntee

[Colin McRae]

To keep it simple, this is right from the AMA:

Model wt oz    Engine size     Watts     Rated Spectra lbs

     24                  .09             300            20
     40                  .25             450            40
     64                  .40             600            60
     75                  .75             750            100


I use 20# for 1/2A even though its overkill.

Colin

[Colin McRae]

   But just weigh the airplane and the pull test if still 10Gs. So a 10 ounce airplane is 100 ounces. Divide that by 16 and you get 6.25 pounds pull test.10 pound line should be fine

 Type at you later,
  Dan McEntee

And don't forget a model pull test is pulling on 2 lines, so on the example above each line is only loaded to 3.125 lbs. A safety factor of over 3 for 10# rated Spectra.

[kevin king]

Thanks gentleman. We are teaming up with the EAA people and the Young Eagles Build and Fly Event!!

[Dan McEntee]

Thanks gentleman. We are teaming up with the EAA people and the Young Eagles Build and Fly Event!!

    If you are going top be flying trainers, and hopefully flying lots of kids,  then maybe go with 20 pound, just for the durability. At the KidVenture circles, we actually used either .010" or .012" lines on the TuffBaby trainers and they were powered by the Norvel .061 engines. We could fly them on 42 to 45 foot lines, and that gave good lap times for the instructors to work with. For windy days they had some 40 ft lines. the heavier lines were just more durable, and could take the punishment better. Spectra had not come along yet. I understand that they have developed a new electric airplane, as the collection  of Norvels were getting pretty tired after so many years and countless flight, but I don't know what they are using for lines. Judging from what I'm seeing on the stunt models I'm flying, I think 20 pound line would hold up for you.
   Have Fun !!
  Dan McEntee

[Ken Culbertson]

I don't want to stop our tendency for overkill but we are talking about planes that pull at most 5lbs?  I would check weight and diameter.  In braded the strength is not as directly related to them.  I would find the thinnest, lightest brand that is at least 8 lbs.  For trainers, some stretch is a plus.

I remember my pre .15 days and there were times we flew them on anything we could find, even carpet thread.  You needed someone to drive to the hobby shop you if you wanted to find dacron and mom always had a roll of something I could steel.  It was worth getting grounded tomorrow!  Was it just me, or was not getting to fly a favorite form of punishment? 

Ken
 

[Dennis Toth]

I use the formula: model weight in LBs x 2 x 10 and get the nearest pound test lines (usually round up). FINS 40G lines are the thinnest for the same pound test which gives less drag.

Best,   DennisT

[Ken Culbertson]

I use the formula: model weight in LBs x 2 x 10 and get the nearest pound test lines (usually round up). FINS 40G lines are the thinnest for the same pound test which gives less drag.

Best,   DennisT

I am currently flying on Power Pro Maxcuatro 100lb.  It is the same weight and diameter as the regular 80 but much stiffer.  I also have a set of FINS 80lb that I made up before getting the Maxcuatro.  I have heard that the FINS is better.  I have never used that set.  I get to fly so little that I can't afford to try things just to see what it is like.  80lb is strong enough if it compares in stretch and diameter.  Just asking.

Ken