I have a question about the elevator trim I am purchasing one that does not have any trim on it and I hear everybody talking about how pitch sensitive they are is adding a trim tab something I should really consider doing and how difficult is it going to be if I add the trim tab thank you in advance for the information
Sent from my iPhone > On Nov 18, 2020, at 5:51 PM, Flesner via KRnet <[email protected]> wrote: > > On 11/18/2020 2:19 PM, Jeff Scott via KRnet wrote: >> My reasoning follows: The slower you go, the less effective your trim >> becomes. So, for your trim to be effective enough to have a shot at landing >> the plane with trim only (A requirement I set for mine), you need to have a >> longer throw to get as much nose up trim as possible for slow speed. > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > I've tried to control pitch with trim only to simulate loss of pitch control > several times. I'm convinced it's not the length of throw, if total travel > is adequate, but the speed of the actuator. With my setup by the time I > start to get the change I want I've gone too far. I get in to PIO in about > three cycles. I might be able to keep from going in vertically but it's not > going to be a pretty sight. I hope to never need trim to land as I doubled > the elevator control horn, possibly the weakest link in the pitch system and > the only cause of a loss of pitch control accident I'm aware of. > > As far as mounting my actuator, I simply removed foam to make a cavity, glued > in a piece of 3/32" ply for a platform and used very tiny screws to mount. > It doesn't take much. > > https://www.dropbox.com/s/iyqod5cb5pmeom3/IMG_8615.JPG?dl=0 > > A simple cover > > https://www.dropbox.com/s/pggv503t8li98om/IMG_8613.JPG?dl=0 > > Larry Flesner > > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/[email protected]/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to [email protected] _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]
