Thanks for the discussion about the EMS/jomar twin synch module. I've know _of_ it for years, but didn't know anything _about_ it. I'll plan to get one and do some testing with it.
I do like Dan Taylor's suggestion of using an elevon mixer for on-the-fly, by-ear engine synching in
http://www.rcuniverse.com/forum/Why_...1131801/tm.htm .
Although the Jomar is sophisticated, the elevon mixer has a certain simple elegance...
--Bill