One of our club members has been making servo arms for the past couple of years. Sold more than 8000 of them so far, including large numbers of IMAC and TOC flyers.

His name is Scott Benedix, and his CNC Machine Shop is SWB Manufacturing, not to be confused with Jeff Seymour at SWB turbines, even though they are only about 50 miles apart here in WI.

His web site is www.swbmfg.com

He is a 40% Giant Scale builder/flyer himself and got tired of all the slop in the output spline/servo arms, particularly with 8411's so he spent allot of money getting the best broach he could to make the interface slop free.

I do know quite a few jetsters have found out about them and are using them.

Tom

All of his arms are tapped for 4-40 ball links. The metal clevis into a metal servo arm just wears way too fast on Giant Scale planes and gets sloppy in short order. Jets might not vibrate as much, but I still use the ball links on all my planes except my BVM planes, which are hard to convert.