The DAR was absolutely correct about trim flutter. I had a trim cable break on my SuperCub clone. The trim tab went into flutter so violent is darn near shook the plane apart. Elevator tips were a blur with roughly 6" oscillations on a wire braced tail. You could see the shock waves from the flutter rolling out the length of the wings. I made it a short distance to an airport, but you can't imagine how violent that little trim tab can flutter causing significant damage to the aircraft in the process. I removed the cable trim system in favor or a Ray Allen servo system BECAUSE is locks up when stopped. -Jeff Scott
Sent: Saturday, September 22, 2018 at 7:14 AM From: "Rob Schmitt via KRnet" <krnet@list.krnet.org> To: "Craig Williams" <cr...@kr2seafury.com>, KRnet <krnet@list.krnet.org> Cc: "Rob Schmitt" <robert7...@aol.com> Subject: Re: KR> Wing Leveler Craig, I tried to use a RC servo for my KR elevator trim. The DAR would not accept it. His issue was that if the servo lost power it didn’t have a lock up mode unpowered. The possible result was flutter in the trim tab. I had to remove it. Worth checking before you go that route. Thanks, Rob Schmitt N1852Z > On Sep 21, 2018, at 7:09 PM, Craig Williams via KRnet <krnet@list.krnet.org> > wrote: > > I've been racking my brain since the autopilot discussion and I finally came > across something that may work but I need to install it and try first. It's > actually a single axis gyro for stabilizing RC helicopters in yaw. Once > engaged it will output an immediate counter steer command to any movement off > axis. It's meant to mounted in the Z axis but could be mounted in any > orientation depending on the axis you want stability in. The question is will > a small tab on one aileron be enough to control. It's time to put the "E" > back in experimental. > > Craig > N886MJ > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at > http://www.krnet.org/info.html[http://www.krnet.org/info.html]. > see > http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org[http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org] > to change options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/[https://www.mail-archive.com/krnet@list.krnet.org/]. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html[http://www.krnet.org/info.html]. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org[http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org] to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. 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 krnet-le...@list.krnet.org
