Guys
I don't have a rule book and can not find the info on line so asking here.
(well I do have the 1974-75 rule book)
What are the requirements for thong?
Material and size?
Heavy shoe lace???
Part of pull test?
If so how to equal pull on lines during test.
Good source of lines or wire to make?
Stranded .015s
Currently flying on .018x 60.
Going to .015 should help---and go to 70ft?
The safety thong can be made of anything that passes the pull test. I would recommend braided nylon bootstrings - they seem to be more durable than just about anything else. The thong is pull-test separately from the lines, but to the same level of stress as the lines. You hook the thong up to the pull test machine and pull on the handle, not the airplane.
As far as lines go, i get mine from MBS Model supply on 1000 ft reels. The minimum diameter is set by the weight of the airplane, per the table in the rule book. Most of the time you probably want the smallest diameter, but not necessarily - I would be afraid to fly a 63 oz 61-sized piped plane on .015 in any sort of wind even thought it's legal, and sometimes the performance is better with larger-than-minimum lines because they stretch less. The length can be anything from 26 feet to 70 (center of airplane to handle, not actually the line length). What you want it to be depends on the airplane, the power, and a lot of factors. I experiment with line lengths in 1 foot increments with new airplanes, and 1 foot can make a huge difference in the performance. You don't menytion the airplane and engines, but a typical 35-sized stunt trainer with a 25LA, 25FP, 20FP, Veco 19, etc, I would start with .015x60-62 (eyelet to eyelet) and experiment. Same airplane with a Fox 35, McCoy, etc, maybe .015x56-58. For a 40-60-sized piped airplane I would suggest .018x64.
Brett
Topic: Thongs and lines. (Read 2473 times)
