Thank you Mr. Colin for your very encouraging post commenting about the KR2 original design. Honestly, I need such post like yours to help keeping my dream alive for getting my KR2 off the ground someday! I was thinking about giving it up on my dreams to actually fly the bird after described my KR2 issues and get no encouraging response on the original design with my type of configuration, especially for a cable activated break and taildragger with attractable main gear that is extremely hard to operate....
Does anyone know whom Larry Geiger is? Your video about his KR2 won the 1993 KR2 of the year is a huge boost on my confidence about the KR2 original design. My KR2 looks almost identical to his except not suring about his break? My breaks and retractable wheels look almost identical, so I would assume that Larry Geiger's KR2 in the video was also equipped with a cable break, such as in the original design, perhaps? Another video provided in your link was a maiden flight of a KR2 with my type of design, but the video scared me a heck of a lot when watching the guy (your friend?) almost lost control on his first take off...?! You also mentioned a number of times about nothing wrong with the standard KR2 design. However, I am not sure what was exactly the standard KR2 design by Ken Rand? Was it also called the original KR2 design with the same type of configuration like my bird (such as retractable main gear with cable break system, taildragger with a speed break board in the belly)? Am still looking to find out if anyone on the planet who still owns and flies the type of KR2 like mine, especially here in the US?! Kindly, Dr. Hsu On Thu, Feb 4, 2021, 9:46 AM colin hales via KRnet <krnet@list.krnet.org> wrote: > I've read lots about stability and landing. > > I have a stock KR2. It's fine!!!! > > You don't need to extend the fuselage length or put a bigger tailplane on > to make it more stable. Those people who say there KR" is unstable haven't > got it set up right with respect to the C of G. Just make sure your C of G > is correct. A bigger tailplane means probably a bigger elevator, overall > affect of both is a more stable aircraft until you move the larger, more > powerful elevator. So now you need a smaller elevator, but then you won't > have such an agile aircraft. It's all a waste of time and effort. > > If you lengthen the fuselage, yes you get a more stable aircraft until you > move either rudder or elevator. Don't forget pitch or yaw control is a > function of forces and length which can be exchanged for torque. More > length more torque, overall affect of lengthening fuselage. Nothing but a > waste of time and effort. Yes its more stable until you touch the controls, > then the fact they are further from the centre of pressure makes them more > powerful or the aircraft is just as light and twitchy. > > JUST GET THE Cof G RIGHT AND THE AIRCRAFT ORIGINAL DESIGN IS FINE! If its > not broken, don't try to fix it. > > As for landing, its easy. Just fly along the runway in a slowly descending > attitude, no flare or faffing or pilot induced oscillation, PIO. When the > wheels touch, stick forward to keep the plane on the ground and close the > throttle and wait for the tail to touch down. > > The biggest problem with the KR2 is you have to finish it, I bet 90% that > get started never get finished. > > So don't worry about modifications or re-inventing the wheel, pitch > sensitivity or flying or landing, just worry about finishing it, because > most people won't ever finish the poor plane, but will sell it on again to > the next person who will want to modify it and re-invent the standard KR2 > design when there is nothing wrong with it, except from what they may have > heard from someone who has zero flying experience of flying a Kr2 or from > some bloke down the pub or flying club. I've got over 1,000 hours in three > standard KR2's and they are fine... > > Final information for the day. Brakes. Trust me, you need the best brakes > you can get. When its all going a bit wrong, wishing you had fitted better > brakes won't be of much help. > > For examples of how to land a KR2 watch these or loads of other videos on > youtube. > > https://www.youtube.com/watch?v=RSJXKZhHkfQ > > https://www.youtube.com/watch?v=9FJuTyf2sJc > > maiden flight of a friends KR2. > > https://www.youtube.com/watch?v=omBs9lCkBLI > > > [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png > ]< > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free. www.avg.com< > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail > > > _______________________________________________ > 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 > _______________________________________________ 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
