That is a good point. When was the last time I checked tire pressure?
----- Original Message ----- From: "Mark Jones" <mjo...@muellersales.com> To: "KRnet" <kr...@mylist.net> Sent: Monday, September 19, 2005 11:59 AM Subject: RE: KR> Nose Gear question > Good point. I run 40 psi in my tires. > > Mark Jones (N886MJ) > Wales, WI > Visit my web site: http://mywebpage.netscape.com/n886mj > Email: flyk...@wi.rr.com > > > -----Original Message----- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On > Behalf Of L. D. Mueller > Sent: Monday, September 19, 2005 10:52 AM > To: KRnet > Subject: Re: KR> Nose Gear question > > > You know that sometimes tire pressure will affect nose wheel shimmy. I > hadn't seen that listed anywhere in reference to the shimmy issue. > > Newbee KR project owner . . . > > L. D. Mueller > 521 North Madison Street > Cuba City, WI 53807 > 608-744-3333 > ----- Original Message ----- > From: <jeffyor...@qx.net> > To: "KRnet" <kr...@mylist.net> > Sent: Monday, September 19, 2005 9:58 AM > Subject: Re: KR> Nose Gear question > > > > Yes, It is the Diehl. Yes there is a gap space between the on each side of > > the bolt between it and the spring. NOt sure how the bolt would have > > gotten > > bent. the bend is ever so slight. May be moot to the subject. > > I am sure I was not doing 75 when I pulled off and not as high as 85 when > > I > > touched back down so it helps to hear that you have been able to do so > > without this issue. By the way, this is the first time my plane has done > > this. > > I also appreciate the info on your take off on your methods. This is why I > > was hoping to catch a ride with someone at the gathering. Wanted to get > > more > > info and feel from those flying, espesially with the same configuration as > > mine. > > I think I need to look closely at the nose gear back at the fire wall > > engine > > mount side. > > > > Anybody out there near Georgetown/ Lexington KY > > > > Jeff York > > KR-2 Flying > > N839BG > > Home page http//:web.qx.net/jeffyork40/ > > My KR-2 http://web.qx.net/jeffyork40/Airplane/ to see my KR-2 > > Email jeffyor...@qx.net > > > > ----- Original Message ----- > > From: "Mark Jones" <mjo...@muellersales.com> > > To: "KRnet" <kr...@mylist.net> > > Sent: Monday, September 19, 2005 9:57 AM > > Subject: RE: KR> Nose Gear question > > > > > >> Jeff, > >> It sounds as if you are referring to the Diehl nose gear which is what I > > have. I have never had an issue with shimmy on mine. I have rotated at > > speeds as high as 75 mph and landed as high as 85 mph all with no shimmy. > > The spring on mine does not contact the centering bolt when the gear is > > lined up straight. There is (guessing) a 1/8" space on each side of the > > bolt > > between it and the spring. This allows for some free castering before > > contact with the spring. The purpose of the spring is to help align the > > nose > > wheel for landing. You mentioned the centering bolt being bent and I think > > you had to do that prior to your shimmy. With the stops on the nose gear, > > I > > just don't see how it could bend while taxiing. I can turn my plane either > > direction to it's limits and it will not bend the bolt. When you begin > > your > > take off roll, apply enough up elevator to relieve most of the weight off > > the nose wheel without taking it off the pavement. Once you establish > > enough > > speed to control the plane with rudder, gently raise the nose off the > > pavement and wait for the plane to fly itself off the runway. Upon landing > > and after the mains touch down, keep the nose up as long as possible until > > it settles on it's on onto the runway and continue to apply up elevator as > > you slow down. One thing to note is that with the nose gear, the plane > > will > > stay on the runway and not float in ground effect once the mains touch > > down. > > It will bounce on a hard landing as will any airplane. > >> > >> Mark Jones (N886MJ) > >> Wales, WI > >> Visit my web site: http://mywebpage.netscape.com/n886mj > >> Email: flyk...@wi.rr.com > >> > >> > >> -----Original Message----- > >> From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On > >> Behalf Of jeffyor...@qx.net > >> Sent: Monday, September 19, 2005 8:31 AM > >> To: KRnet > >> Subject: KR> Nose Gear question > >> > >> > >> OK, So I may not supply quite enough info for a complete evaluation but, > >> I > > am going to try and get your alls advise. > >> > >> Yesterday when I went to rotate to take off, just at or before the nose > > gear lifted, I felt a pretty significant shimmy in the nose gear. The nose > > came up and the airplane lifted off. I decided to pull the power and set > > back down. I pulled the power, let the plane sit back down and upon the > > nose > > gear touch down, the shimmy came back but much worse. I was actually > > wondering if it was the nose wheel or something significantly out of > > balance > > with the engine. > >> I never really looked at the air speed indicator but I looked at the tach > > and noticed that I still had 2200 RPM and was having a difficult time > > getting the RPM's to come down. I have the vernier ( screw in and out ) > > type > > throttle so I began back screwing the throttle. Everything finally slowed > > down and I taxied off and back to my hanger. > >> > >> Upon inspection of the nose wheel it appears that the bolt that appears > >> to > > hold the little coil spring posts centered, has bent. Or maybe it was bent > > before I started. I also want to point out that the free castering nose > > wheel self centers when you lift up on the front end, a test I was told > > indicates that you have the right tension and such on the nose wheel. In > > testing a couple of them at the gathering, I noticed they did not self > > center and those owners indicated they had no shimmy issues. By the way > > that > > information was not meant as any criticism of anyone else's KR. I just > > wanted to compare my nose gear adjustment to others while there. > >> > >> Here is my question. Did I let the nose gear touch down with to much > >> speed > > thus precipitating the shimmy? Did I do a poor preflight and this > > centering > > bolt was already bent ( Slightly, spring still looks to still be > > contained ) > > ? > >> > >> Is it possible that I let the plane stay planted to long and had to mush > > speed before I pulled the nose wheel come up? Thus precipitated the whole > > thing. Maybe I need to look at the nose gear at the point of the engine > > mount / fire wall? > >> > >> Your thoughts experiences? > >> > >> Jeff York > >> KR-2 Flying > >> N839BG > >> Home page http//:web.qx.net/jeffyork40/ > >> My KR-2 http://web.qx.net/jeffyork40/Airplane/ to see my KR-2 > >> Email jeffyor...@qx.net > >> _______________________________________ > >> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > >> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > >> please see other KRnet info at http://www.krnet.org/info.html > >> > >> _______________________________________ > >> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > >> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > >> please see other KRnet info at http://www.krnet.org/info.html > >> > > > > > > > > _______________________________________ > > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html > > > > > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
