DU:

Disagree, sir.

Jim Walker had patented the two-line system, all the manufacturers of kits or c/l parts, the bellcrank, control horns, etc, had to pay a royalty to Walker for every thing they made and sold. Monoline was an alternate system, and no royalty to Walker was required.

When Stanzel put Monoline on the market, in the mid 50s, he pushed its use as a sport system. He even hired Dale Kirn to go on a "Road show" to demonstrate it as a system for stunt planes. He was able to use line lengths that would not have been operable with a two line system,

One of the things he touted was just that, the longer lines. By using them, one of the "Newbie" objections was countered - the pilot spinning around. "I'll get dizzy!" was a common objection, the longer lines meant he didn't have to spin as fast.

And then the speed boys found that one 0.018" line was less air drag than two 0.012" lines.

So the Monoline system, intended to displace Jim Walker's "U-Control" never caught on, except for U/C speed,where it became dominant.

Bill.