Out crop dusters strip here where I keep my Kr2 is 800 metres 2600ft. I use about half of that for both take and land. Phil Matheson Australia http://www.philskr2.50megs.com/
Sent from my iPhone > On 30 Jan 2021, at 15:52, Dr. Feng Hsu via KRnet <krnet@list.krnet.org> wrote: > > Thank you all Brad, Larry and John for the encouraging words and the > excellent tips on getting my KR2 off the ground for the maiden flight. It > is good to hear that someone outside the US have actually managed to get a > KR2 certified to fly without much modifications (i.e. kept tailwheel & > cable break as the original design)?! > > I have actually thought about never touching the cable breaks for the first > landing, but not sure if our 5200ft runway here at KAEG was long enough to > allow the KR2 run out of momentum?! It looks like this risk is now > completely acceptable assuming your 600meter estimate is accurate. In this > case, I have a safety factor of about 2.5 at the least with respect to > runway limit on landing! > > I have been trying to do some high speed taxing on the KR2, and especially > trying to stop the bird completely for an engine runup test, but I failed > it every time because the bird just kept moving with only less than 2500rpm > throttle regardless how desperately I step my toes on the break paddles.... > Frankly, I felt like I could break the cables easily or rape apart the > paddle supporting structure on the floor (100% wood!) if I just put > whatever force with my toes needed in trying to stop the bird...!! > > Converting it to tricycle landing gear and hydraulic breaks would be major > modifications, and I don't think it's a project can be completed with less > than another full year of time and thousands of dollars to spend, right?! > > I am trying to get a true risk picture for taking this bird to the sky > without modifications, and I am afraid to say that such a safety risk is > quite serious perhaps, which probably explains why there is almost no one > here in the US who is still flying a KR2 with the original design unchanged > (taildragger with cable breaks)....?! > > I will be very keen to hear if anyone here in the US who is still flying a > KR2 with the same configuration as mine? > > Kindly, > > Dr. Hsu > 713 513 0423 > >> On Fri, Jan 29, 2021, 11:09 AM Great Western Airsports < >> f...@greatwesternairsports.com> wrote: >> >> Dr Hsu, hi. >> >> There's much advice on here but Mr Flesner in an email today gave good >> advice. Don't overcontrol, use your fingers to control rather than 'a whole >> arm,', be smooth but postive. >> >> Your concerns about retracts are possibly well founded but, you've alway >> got the option if a go-around, it's an option and privilege available to >> you until you find your feet. >> >> My 2-penneth from someone who recently putting through certification >> albeit here in the UK(std KR-2, Retracts, cable brakes) >> >> 1. Find the longest runway available to you for your first flights. Don't >> use brakes other than as taxi aids and power checks, keep stick fully aft, >> these aircrafts will tip onto the prop if you're undisciplined whilst >> taxying over a pencil(maybe an exaggeration). Over the hedge at >> 60mph(ground speed) in my aircraft results in approx 600 metres roll >> without brakes. >> >> 2. During takeoff roll, increase power smoothly and control direction with >> rudder, just as you were taught. If you let it get out of hand, side loads >> build up which I understand has led to failures. >> >> 3. Heavy landings may cause bending moments to put the undercarriage >> through the upper wing surface, not seen it but I've heard - a go around in >> that first bounce is your solution until you build experience with your >> aircraft. >> >> Kind regards, >> >> Brad Wagenhauser >> Chief Flying Instructor >> >> Great Western Airsports >> Brown Shutters Farm Airfield >> Somerset >> >> Mobile - 07516 235 000 >> Email - f...@greatwesternairsports.com >> Website - www.greatwesternairsports.com >> Facebook - https://www.facebook.com/greatwesternairsports >> ________________________________ >> From: KRnet <krnet-boun...@list.krnet.org> on behalf of Dr. Feng Hsu via >> KRnet <krnet@list.krnet.org> >> Sent: 29 January 2021 16:34:45 >> To: KRnet >> Cc: Dr. Feng Hsu >> Subject: Re: KR> Washington KR2S Wanted >> >> Hey John, >> >> Is your KR2 a taildragger or tricycle? I certainly share your neigative >> feelings about trying to flying the KR2 bird, despite that I almost >> finished everything by putting in nearly a good year of my weekend time on >> the project after bought it nearly a year ago... Honestly, my uneasy >> feelings about this KR2 is not so much about the control surfaces or >> anything related to the power plant or prop....My biggest concern is about >> the fact it is built by someone based on the original KR2 design with >> retract gear, taildragger, and worst of all the cable activated break >> system! My fear is that it may not be able to stop the bird after landing, >> needless to mention the risk of ground looping or lack of breaking power to >> perform engine runups before taking off... >> >> Bottom line is that, the more I learn and work on this KR2 bird, the less >> confidence I have to ever want to take her into the sky someday....?! I bet >> your KR2 is already converted to hydraulic break and tricycle landing gear, >> to say the least, correct?! I would venture to guess that your bird is >> several times safer than mine to take her for the maiden flight...?! >> >> I have been praying that someone in this community would offer to help >> getting this bird to where she belongs - not in the hangar for sure! >> >> Kindest regards, >> >> Dr. Hsu >> 713 513 0423 >> >> On Thu, Jan 28, 2021, 12:32 PM John Gotschall via KRnet < >> krnet@list.krnet.org> wrote: >> >>> I have a kr2, 2180 turbo, I have never flown it. It needs work. >>> It is on stock gear. >>> >>> I have built and flown many shapes and sizes RC models over the decades, >> I >>> can sort of just tell by looking at the airframe, weight, and balance how >>> it will likely handle in flight. >>> >>> So every time I get the urge to work on my KR2 I get the feeling I won't >>> much like flying it. It's just too short in length, seems to me it will >> be >>> touchy and never will be nice and stable, easy to fly, decent airplane >> for >>> cross country. That depresses me and removes my motivation. >>> >>> Elevator response reports of which there are many reinforce the negative >>> thoughts. Also dismal spin test reports (video). >>> >>> For a long time I owned a Cessna 172. I really liked flying it, super >> nice >>> to fly. Really properly proportioned. >>> >>> I wonder if the kr2S would generally be more like the cessna to fly as >>> compared to the kr2. The longer moment with the longer fuse looks >> better. >>> Might be able to recover from a spin. Is more stable? >>> >>> I would like to buy a KR2S I think. When I go to work on it I would not >> be >>> discouraged by the short fuse. >>> >>> Any for sale near Seattle? >>> >>> thanks >>> >>> jg >>> _______________________________________________ >>> 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 >> > _______________________________________________ > 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
