Fastening Elevator stab in 36% Katana

[i3dm]

Hello guys,
in my new WM Katana 36% (former AW model) the elevator halves have 1 bolt each, threading into the stab tube, that is full with wood. im a little concerened about this bolt possibly loosening up from vibration.

any tips on how to make sure its in ? i take the stab off every time i finish flying in order to fit the plane into my car.
thanks.

[Vtailman777]

The tube you are referring to is very thin. The tube has been reinforced with with a harder wood such as poplar. Use a drill size to suit tap size...drill and then tap hole....tap must go into wood full length of machine screw that us used. I prefer to go at least to half depth. Occasionally, place a drop of CA in hole( when off of plane) to strenthen the tap threads. Use a drop of locktight on machine screw and let dry before inserting screw. Chase the machine screw thread with a die.....the die will leave a small amount of loctight on thread..just enough to assure a good fit and maintain in place.

Eventually you will enlargen the hole too much...so just rotate the tube a quarter turn and begin the process all over...hope this helps..., V.

[red_z06]

use 4-40 bolt with rubber backed washer and very light tightening. It will never loosen with rubber holding it.