Q1 Plans Chapter 14 Page 14-1
- Details
- Category: Quickie Plans
- Published: Monday, 12 May 2008 10:28
- Written by Dan Yager
- Hits: 2164
SIDE CONSOLE INSTALLATION
The side consoles can now be installed. Use one BID over the bare orange foam side, overlapping onto the fuselage, fuel tank, and seatback bulkhead. Some trimming of the sides may be necessary because of differences in your locations of the fuel tank, etc. Also, the top side console rests on top of the side console.
After installation, therefore, you will have one ply of BID on each face of the consoles.
TRIM SYSTEM
Roll trim and rudder trim are both ground ajustments. The pitch trim can be altered in flight, even though for most flying, you will probably find that you don’t retrim very often.
Roll trim is adjusted by changing the length of the rod end combination that joins CSA6 and CSA7. This must be done on the ground, of course.
Rudder trim should be accomplished by placing a small tab on the rudder and bending it to make the rudder trim at the desired angle. Remember that bending the tab right will make the nose go left. The rudder trim should only be installed if flight test proves it necessary.
Pitch trim is actuated by an arm on CSA8 with two springs attached to it. The tension in the aft spring can be varied by the position of the trim handle, which is a sawed-off hacksaw blade. Changing the tension in the aft spring will cause the CSA8 trim arm to rotate to a new position, which means that the elevators have rotated to a new position. Look at the sketch and understand the last few sentences.
The details show you how to hook up the system. There are several things that should be noted. The springs are fastened to the AN100-3 thimbes and the hacksaw blade by looping safety wire around the combination two times. Of course, the last loop of the spring should be closed so that the safety wire cannot slip out. With the elevator at neutral position, the CSA8 trim arm should be approximately vertical. The lengths given for the springs are the unstreched lengths and are approximate; once the trim system is installed you may have to stretch, or shorten one or both springs to get the proper trim travel. Without touching the stick, the trim system should be able to trim the elevator within a plus or minus 10 deg. range from neutral. If necessary, favor the down elevator condition slightly.
For the trim arm, cut a hacksaw blade from the local hardware store to the correct length. Deepen the notches with a file so that they are at least 1/8” deep. This will mean that you will end up with half as many teeth in order to get the proper depth.
Another piece of hacksaw blade is attached with 5-Min to an orange foam bulkhead, which is mounted at the fwd. end of the fuel tank using 2-BID on each side. A slot in the foam allows the hacksaw blade to rest on the blade attached to the orange foam. To trim the aircraft in pitch, you just lift up and move the hacksaw blade until a different notch rests in the blade attached to the orange foam. Macrame beads from the variety store are attached to the hacksaw blade as a handle. Make sure that throughout the full travel of the trim system, no interference exists with the side console or fuel filler tube.
SEE NEXT PAGE FOR SKETCHES AND DETAILS: