I have recently rolled out a new set of .022 diameter solid lines for the 12-20 lb weight models that I fly. The new rules state that the .024 braided or .022 solids can be used. I got the lines from MBS model supply.

The new lines were pull tested to 100+ lbs and they passed without any problems. the handle, connectors or flying lines themselves had no problems

Then I made up a sample and subjected that single line to 110 lbs with the normal connectors. The sample in the picture is the .022 diameter solid line that is wrapped with copper wire like they do for CL aerobatics. What was interesting is that the connector failed at 110 lbs instead of the line or the wrapped ends. This line is rated at about 135 lbs of maximum line tension to remain safe.

the 14 lb B-29 pulls about 40-50 lbs during flight which means each line is loaded to 25 lbs. The pull test for the 14 lb model is 70 lbs.

Ready to get flying at the Nats!
Fred

I built some handles last year and pull tested all of them, and one failed, yeah you never know when the stuff is worn out or broken. The solids are interesting but it held on even at 110 lbs of tension. I need to update my pull test mechanism and get the weights up to 150 lbs, really want to see where and what fails when the line tension gets up there.

I plan to run a sample of the other line diameters also

Fred