HopePilot Posted September 27, 2010 Report Posted September 27, 2010 I went to check out a small fuel leak (another thread) and was surprised to find my elevator pointing down (it was only pointing down a little the night before. I hadn't realized it, but my electric trim wasn't working and I was still trimmed full nose up from landing. I reset my speed brake circuit which had popped out, and I was able to get my electric trim working and trim the elevator back to looking normal. Maybe I'm being paranoid, but shouldn't my elevator look "flat/horizontal" to the horizontal stabilizer even if I'm trimmed all the way nose down? Last question. When you are trimmed all the way nose down, and you pull the yoke back, will the elevator pull up much beyond level with the horizontal stabilizer? Mine didn't (well, just a little) and now I can't remember if it did previously. Quote
Parker_Woodruff Posted September 28, 2010 Report Posted September 28, 2010 If your trim is in the takeoff position, your elevator will be more or less in even with the horizontal stabilizer on an M20J. Does that make sense? The forces you feel after trimming are very much tied into springs. If you trim all the way down, you will have to put in quite a bit of force to get the elevator in the full up position, but nearly nothing to have it down. Quote
FlyDave Posted September 28, 2010 Report Posted September 28, 2010 >> I hadn't realized it, but my electric trim wasn't working and I was still trimmed full nose down from landing. I don't think you should be trimmed full down for landing. If I did that I'd strike the prop on the ground for sure (and most likely worse). >> I reset my speed brake circuit which had popped out, and I was able to get my electric trim working and trim the elevator back to looking normal. Can't you adjust trim with the trim wheel between the front seats? Did the speedbrake installers put the speed brake power on the electric trim circuit braker? If so, I'd check the amperage required for both and verify that the CB is rated for that much current (installers should have done that when they installed). Also, I'm not sure if putting speedbrakes on the electric trim is Kosher but I'm not an A&P so call LASAR or another shop and ask them. >> shouldn't my elevator look "flat/horizontal" to the horizontal stabilizer even if I'm trimmed all the way nose down? No. The further you're trimmed down from TO position the further the elevator will pitch down (trailing edge) from the H-Stab. After shutdown, I trim all the way nose down to get the yokes as forward as possible providing more room to ingress/egress the cockpit and the elevator trailing edge is way down. Quote
HopePilot Posted September 28, 2010 Author Report Posted September 28, 2010 Whoops, I meant I was full trim up (I was thinking back to my Cessna days). Quote
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