KIS-List Digest Archive

Wed 07/11/12


Total Messages Posted: 4



Today's Message Index:
----------------------
 
     1. 04:17 AM - Nose Wheel Torque (Owen Baker)
     2. 05:13 AM - Re: Roll pin (ALFRED ROSA)
     3. 04:26 PM - Re: Nose Wheel Torque (Kent Pyle)
     4. 05:31 PM - Re: Nose Wheel Torque (ALFRED ROSA)
 
 
 


Message 1


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    Time: 04:17:19 AM PST US
    From: "Owen Baker " <bakerocb@cox.net>
    Subject: Nose Wheel Torque
    7/11/2012 Hello Galin, Why not drill all the way through like you plan to and use an AN 3 bolt with a stop nut on it instead of the roll pin to hold your large bolt in place? I have had very good luck using nylon washers in my KIS TR-1 nose gear stack up to provide friction =93 no shimmy problems. Nylon washers are available from a good hardware store or you can make them yourself using nylon sheet and hole saws of the correct diameter. OC ============= From: owner-kis-list-server@matronics.com [mailto:owner-kis-list-server@matronics.com] On Behalf Of Galin Hernandez Sent: Monday, 9 July 2012 10:37 PM Subject: Re: KIS-List: Nose Wheel Torque Thanks Mike. I am going to make it so the pin extends completely from one side to the other. It just seems logical to me. Also, how much torque do you put on the bolt? I read to tighten it until it takes between 20-30 ft/lb to move the nose gear but how do you measure this without special equipment? I have a torque wrench so I can put a specific amount on the bolt. Galin


    Message 2


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    Time: 05:13:41 AM PST US
    Subject: Re: Roll pin
    From: ALFRED ROSA <fredorosa@gmail.com>
    Credit goes to Bill Schertz. I just copied what he did. Al On Tue, Jul 10, 2012 at 9:22 PM, Galin Hernandez <galinhdz@gmail.com> wrote: > Well Dave I would still rely on your recollection for things like this. > This isn't my solution but I am going to "borrow" it for the airplane. > > Galin > > On Tue, Jul 10, 2012 at 2:42 PM, David Tate <dptate49@yahoo.com> wrote: > >> Galin >> The nose gear origionally had a "radius stop" which, as I recall (not a >> very reliable source) was simply a roll pin in the nose rod and one on each >> side of the fork. The roll pins sheared off with some regularity and I >> never was able to make a good fix. Just made it a practice to avoid >> sharp turns. Your solution with blocks fixed on each side of the fork is >> neat (as long as you use something tougher than a roll pin in the nose >> rod). Wish I had thought of that. >> >> Dave >> >> >>


    Message 3


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    Time: 04:26:22 PM PST US
    From: "Kent Pyle" <kentpyle@iland.net>
    Subject: Re: Nose Wheel Torque
    I too suffered nose wheel pant damage from shimmy. My mechanic recommended balancing the nose wheel to help solve this problem. Kent From: F. Tim Yoder Sent: Tuesday, July 10, 2012 1:48 PM Subject: Re: KIS-List: Nose Wheel Torque Galin, It needs to be pretty tight. you may need to use both hands to move the yoke. The wheel needs to be off the ground, of course. I have seen a Cirrus nose wheel shimmy so bad it blew up the wheel pant. Tim al Message ----- From: Galin Hernandez To: kis-list@matronics.com Sent: Tuesday, July 10, 2012 11:03 AM Subject: Re: KIS-List: Nose Wheel Torque Tim, Now that I re-read your e-mail it makes complete sense. "DUH" I will check to see how much torque is needed to move the nose gear fork. Galin On Tuesday, July 10, 2012, Galin Hernandez wrote: Tim, What do you mean you hook it on the yoke at the "axle point"? Galin On Tuesday, July 10, 2012, F. Tim Yoder wrote: Galin, I use a simple fish weight spring scale to set the torque on my TR-1. I hook it on the yoke at the axel point and tighten the nut until It takes 30# of pull on the scale to move the yoke. The pounds required should be in your manual. Tim ----- Original Message ----- From: Galin Hernandez To: kis-list@matronics.com Sent: Tuesday, July 10, 2012 5:26 AM Subject: Re: KIS-List: Nose Wheel Torque The bolt is threaded but there is no thread in the nose leg so it just slides in and out. The roll pin is what holds it in the nose leg. The only thing I can think is that instead of fabricating bolts for the nose gear they just purchased a standard 3/4" threaded stud and drilled the appropriate holes. How do you measure 10lbs at the rear of the nose fork? Galin On Tue, Jul 10, 2012 at 6:45 AM, Mike and Michele Patten <mikepapa@bigpond.com> wrote: Galin, I didn=92t realise the bolt on your aircraft was threaded into the nose leg. On my aircraft the shaft which protrudes out of the leg is parallel on the top section where it goes into the leg and is held into the leg by the roll pin alone. The threaded section on the bottom is only about 1inch long and supports the belville washers and castellated nut. I assumed this was the upgraded gear, which replaced the original. The tension of the retaining nut is not definitive, but a function of a load required to move the wheel at a certain radius. Can=92t remember the load, but something like 10lbs at the rear of the nose fork. Best to err on the high side otherwise it will shimmy, which is not as obvious to the pilot as someone on the ground observing. Hope this all makes sense. Regards, Mike. From: owner-kis-list-server@matronics.com [mailto:owner-kis-list-server@matronics.com] On Behalf Of Galin Hernandez Sent: Monday, 9 July 2012 10:37 PM To: kis-list@matronics.com Subject: Re: KIS-List: Nose Wheel Torque Thanks Mike. I am going to make it so the pin extends completely from one side to the other. It just seems logical to me. Also, how much torque do you put on the bolt? I read to tighten it until it takes between 20-30 ft/lb to move the nose gear but how do you measure this without special equipment? I have a torque wrench so I can put a specific amount on the bolt. Galin On Mon, Jul 9, 2012 at 6:20 AM, Mike and Michele Patten <mikepapa@bigpond.com> wrote: href="http://www.matronics.com/Navigator?KIS-List">http://www.matronics .com/Navigator?KIS-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c et="_blank">http://www.matronics.com/Navigator?KIS-List tp://forums.matronics.com _blank">http://www.matronics.com/contribution href="http://www.matronics.com/Navigator?KIS-List">http://www.matronics .com/Navigator?KIS-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c


    Message 4


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    Time: 05:31:00 PM PST US
    Subject: Re: Nose Wheel Torque
    From: ALFRED ROSA <fredorosa@gmail.com>
    My nose leg bolt is threaded only at the bottom and possibly threaded at the top but I can't be sure how it's attached to the leg. There is no roll pin holding it though. The main shaft of the bolt is smooth and fits tightly into the fork. I even attached a grease nipple in the fork to lube the contact. If you want to do it right, don't use a threaded stud. It wont be as tight fitting. Al




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