Re: [RCSE] OK, this is Different...

[GordySoar]

Here's something crazy for you rc sailplane enthusiasts!   Since I started flying Pikes, I found that the top linkage set up that they come with allows too much flex in the system for the flaps. So I installed the standard carbon horns we've all used on Compulsions, Addictions etc. Yep I slotted the surfaces and epoxied the full size horns (4 holes) carefully into the surface.   I use a square to align the horn with the servo arm, then mark the surface with a fine point marker.  Then I use a dremel cutting wheel to create the slot. I then use a fine router bit to get any slag out of the bottom (underside of the top skin).  I put a small piece masking tape inside the hinge line, or wiper area to keep resin from wicking in there.   Then I mask off the slot so that I can be generous with 5min expoxy with some filler mixed in, just to thicken it some.  I wipe some resin into the holes along the bottom of the horn, then press it into the slot.  The excess that oozes out, get wiped off when I pull the masking tape pieces away, just before the resin set up.   I also check to make sure the horn is aligned in all axis before the resin hardens up.   I install the servos so that the output shafts face the fuselage (opposite the usual way), that way the top link threaded insert doesn't have to be ground away inside to make way for the horn's base.   The servo uses the usual 2 hole arm and the arm is leaned toward the hinge line about to splines worth.  That insures that I'll get all the flap movement I'll want.   I use Sullivan clevis' (2/56), but I don't use threaded rod or metal rod at all any more. Instead I use carbon pushrod the same thickness at the 2/56 rod.  I CA one on to the end of rod, then make sure that my servo is zero'd with the RX, and the surface is centered, then I wick some CA into the other clevis to lock it in place.  Yes I have had one or two instances where the CA let go, but its back to tight with another drop of CA on the field. :-)   The reason I got away from metal pushrods was bending...and soldering.  The heat wasn't doing the clevis' any favors and the carbon set up is lighter too. :-)   This is the system I am using on the World'sHeaviestCarbonSupra  and my Perfect too, and so far they are holding tonite here in Atlantic City. :-) I recently did the same mod on my Sharon, and now get a lot more down flap and braking as  result of that.  One thing the Picolario has shown, I get a pretty substantial launch boost from the firmer flaps.   Gordy Atlantic City tonite