Servo buzzing can be caused by binding in the linkage....What you will notice as you get a totally slop free linkage sometimes it will still have some buzzing especially with digitals....It depends on the servo and the the size of the control surface....The weight of the Aileron can also be an issue...Since old Newton is acting on the control surface this force is creating a reaction force in the servo...hence the power usage....
This is only a issue on very large control surfaces...not the pattern ones usually have....Some slight buzzing can be possible...but this does't happen during flight there are many other forces at work up there.


Why do you drill them? on the 2mm links....the reason is these will work as they stand on 2-56 threads....the 2mm hole is a touch small to jam the 4-40 into and start cutting a thread...The clevis part is a strong nylon or plastic type material like most connectors....So I did them out slightly and run tap down them partway. The tap going down say 1/2 way allows for the start of the threads...and the rest to be cut by the threads so its a tight fit...If you tap the entire connector the clevis will turn on the rod like its a nut....When you take you servo out of clevis off to work on something the clevis will turn and loose its adjustment.


Cables......I'm not a fan of cables. They seem to have benefits but I just have not liked them on the elevator...In principle they have some advantages....Weight, and flexibility of adjusting all 4 travels....L-UP, Ldown, R-up, RDown all independently.....


My hang up is I guess the cable will stretch a little over time and you will have to adjust the tension....I use 30lb test nylon coated steel fishing line for cable....Don't have issues with the cables breaking....but it will stretch a touch...and if there gets any slop you will feel it. I just don't like to build setups that require maintenance in the future....Yes I use cables on the rudder....so whats my problem....just never really been sold on them for the elevator........Also they look crappy coming out of the fuse....again they are more functional than pretty...just not my cup of tea.


OK now for my Elevator pushrods.......I'm working on a comparison between the MK, Cables, and the CF pushrods I use....Its in a word document right now...and not edited....I will post it under a separate topic like Elevator control linkages....or something like that.....probably tonight.....got some stuff to do today....but should get it done.....\


Troy