ORIGINAL: Wnuk
As for me, i've been flying the heck out of my CPP lately. My only complaint with it is the tail holding power. It just isn't what I would like it to be. I recently tried the Microheli CNC Dual Tail Holder and Verticle fin combo. Guess what? As soon as I put the CNC holder on I started getting MAJOR glitches. I twisted my tail motor wires (Thanks Choppers!), and even insulated the CNC Holder from the CF Boom to no avail. I have NO idea why this is happening. But as soon as I go back to the stock tail holder, the glitches go away. I'm at a loss!
Jim
hrm, yeah that is kinda weird. I am running the microheli cnc dual tail holder without any glitch problems at all. A couple of things that I can think of with the dual tail. Just depending on how musically inclined you are, take the gear off and spool up the two motors, if they have the same pitch, then they are running at the same speed. It usually takes a musically trained ear to hear the difference though. If you here a wa wa wa sound that's called a beat and it means they are not running the same speed. The longer apart that wa wa wa sound is the closer to sync they are if the pitch is reasonably close.
a couple things that could make them run at different speeds... the lead wire is too long to the second motor. The two lead wires are of different lengths or resistances, a little but will probably be fine, but alot is not good (see note at the end). One motor is more broken in, one motor is more worn than the other motor or close to failing.
If it is an RFI type deal, make sure that the caps are connected to the negative pole of the motor and then grounded to the outside of the case and there is continuity between all the grounding points without the negative wire lead.
Just a couple of other things, I didn't need any insulation between the CF rod and the alum tail holder, you may want to check your tail motor wire for shorts along it, like closer to where the cnc mounts because it could short to the cnc and it wouldn't short to the plastic.
If you have a way to take some pics of your setup that might help trouble shoot it a bit.
note: I tried just for an experiement to run the dual tail with only the positive wire connected because the cases are grounded together and connected through the rf cap. This was enough difference in resistance to make the motors run at a pretty significant speed difference.
Also be careful about just sliding the motor back from the gear, if you leave the pinion in the hole that it goes through (like sliding it back just a bit), it can bind the motor and fry your 3 or 4 in 1 and/or blow a fuse as well as ruin your motor. just ask me how I know =P