---------------------------------------------------------- Allegro-List Digest Archive --- Total Messages Posted Mon 08/28/06: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:15 PM - Rotax Fuel Pressure Gauge (Hugh McKay III) 2. 06:32 PM - Elevator Trim Tab Setting (Hugh McKay III) 3. 07:22 PM - Stick position vs. Elevator position (Hugh McKay III) ________________________________ Message 1 _____________________________________ Time: 03:15:57 PM PST US From: "Hugh McKay III" Subject: Allegro-List: Rotax Fuel Pressure Gauge Gentlemen: The Fuel Pressure gauge from Rotax for my 912UL is marked with two red lines, one at 0.2 bar, and the other at 0.5 bar. I assume these are min. and max. indications. The Rotax 912UL Operators Manual page 10-5 states that the min fuel pressure is 0.15 bar, and the max is 0.4 bar. Are these red lines on the gauge essentially the figures given in the manual, 0.15 and 0.4 bar (i.e. as close as they could mark the gauge)? Hugh McKay ________________________________ Message 2 _____________________________________ Time: 06:32:46 PM PST US From: "Hugh McKay III" Subject: Allegro-List: Elevator Trim Tab Setting Gentlemen: I believe I understand how to set the trim tab on my Allegro 2000, but would like to have some independent confirmation or correction. Here is my understanding. With the trim tab lever in the cockpit set in the vertical down position, the trim tab should be set in the neutral position relative to the elevator. In this neutral position the wire cable is clamped to hold the tab in this position. When the lever is moved forward (nose down) the tab would be pulled up (by the spring on top of the elevator) relative to the elevator itself. When the lever is pulled back, the tab is pulled down (by the wire cable) relative to the elevator itself. What I dont understand is the stop screw on top of the tab that limits the max up position that the spring pulls the tab to. How is this stop screw set? What is the limit of the up-deflection of the tab, and how is it measured? Any help would be deeply appreciated. Hugh McKay ________________________________ Message 3 _____________________________________ Time: 07:22:54 PM PST US From: "Hugh McKay III" Subject: Allegro-List: Stick position vs. Elevator position Gentlemen: Gentlemen: On page 180, section 44.9 of my Allegro 2000 Quick-Build Kit Assembly Instructions there is a description of how to set the elevator stop bolts located at the control stick. I have followed the instructions, which I quote as follows; hold the elevator 3? above the neutral position and set the front stop bolt. Hold the elevator 2 19/32 below the neutral position and set the back stop bolt. I have set the elevator positions as explained. However, with the stops set as described, the front stop bolt allows the bottom of the hydraulic brake lever attachment on the stick to hit the fiberglass console before the limit on the stop bolt. This should not occur. With the stop bolts in these positions the stick can be moved forward until the lower portion of the hydraulic brake lever hits the console, and pulled back to a position slightly aft of vertical before hitting the rear stop. If the elevator dimensions called for are correct, something else needs adjusting. Page 101 of the assembly manual shows a threaded fork at the end of the elevator push/pull rod at the point just to the rear of the lower aileron control lever and aileron stops. On my plane there is about of thread showing on this fork, with an adjustable metal band clamp on the end of the push/pull rod at this location. Can I loosen the metal band, and adjust this threaded fork to reposition the stick to clear the console and keep the dimension limits on the elevator? I am not sure what the adjustable metal clamp on the elevator push/pull rod is used for other than this? Can anyone help me with this problem? Almost, almost, almost through with my Allegro, Hugh McKay