Lightning-List Digest Archive

Mon 06/07/10


Total Messages Posted: 7



Today's Message Index:
----------------------
 
     1. 05:22 AM - Re: Re: Wheel Balancing results within the week... (N1BZRich@aol.com)
     2. 09:13 AM - Re: Wheel Balance (n5pb@aol.com)
     3. 09:17 AM - Re: Wheel Balancing results within the week... (Bill Strahan)
     4. 09:20 AM - Night flight (Bill Strahan)
     5. 09:25 AM - Wheel bolts (IFLYSMODEL@AOL.COM)
     6. 09:45 AM - Re: Wheel Balance (Mefford, Walt)
     7. 07:44 PM - Re: Night flight (Steven Sundquist)
 
 
 


Message 1


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    Time: 05:22:41 AM PST US
    From: N1BZRich@aol.com
    Subject: Re: Wheel Balancing results within the week...
    Get well soon, Bill, Hope you have good results with your wheel balancing. If you take at look at the March 2009 Lightning Newsletter you will see a short article in the tech tips section about a racing go kart wheel balancing tool that I used to balance my wheels. I tried that after Linda reported good results having her wheels balanced at a local motorcycle shop. My results were positive, but didn't completely do away with all the shimmy. I think the shimmy is kind of inherent in the round rod gear leg design, but as we have mentioned before, lots of other factors can also help or hinder - tires (pressures and compounds), toe in/out, aircraft weight, and runway surface. Seem to be lots of variables, but we look forward to your findings. Blue Skies, Buz In a message dated 6/7/2010 12:02:23 A.M. Eastern Daylight Time, bill@gdsx.com writes: --> Lightning-List message posted by: "Bill Strahan" <bill@gdsx.com> Well, within a week, give or take. In my two year experiment with weird infections, I got a tick bite while in Arkansas the day before Memorial Day and it quickly became apparent I had picked something up from the critter. I haven't had as much as a cold in the last year, and suddenly this. Oh well. I'm on antibiotics that kill everything, including my body's attempts to digest food. :( I did get back out to the hangar on Friday and got both wheels balanced. I was very happy with the balancer, it proved to be ultra sensitive and the results were repeatable so I felt confident in the balancing done. In each case, the wheel was light on the side with the valve stem. That seemed strange, but the red dot and the valve stem were on the same side, and for one wheel it took 1.25 ounces on the rim to balance it. The other took 1.5 ounces in the same spot. I took a couple of short videos, and will hopefully fly tomorrow with wheelpants off. If all is well I'll put the pants back on, fly again, and will report on the results. I sure hope the shimmy is gone. It's the one thing keeping me from taking passengers right now, because I just don't like explaining it. It's just enough to be unsettling. Bill Read this topic online here: http://forums.matronics.com/viewtopic.php?p=300290#300290


    Message 2


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    Time: 09:13:06 AM PST US
    Subject: Re: Wheel Balance
    From: n5pb@aol.com
    Lynn, I put 1 ounce into the nose wheel and did 3 full takeoffs and landings wit h breaking and taxi back. the shimmy I've experienced seem not to be there so I decided to put 1.5 ounces in each of the mains. When I got to the left main to remove the wheel, two of the 3 bolts that hold the wheel rimms together were missing and the 3rd one was just hanging in place. I was pretty stunned to see this (as you can imagine). The one remaining one looked as though it had been sheared off. I did a FOD walk around the local taxi area and found another piece of a bolt (this one still had the nut in place, but missing the head portion-appearing to be sheared off as well. Still haven't foun d the 3rd bolt. As a result of this, I haven't proceeded with the install of the dyna bead s in either of the mains yet. More to follow... I would suggest everyone check their main rim bolts and nuts to make sure they are secure. Bear -----Original Message----- From: IFLYSMODEL@AOL.COM Sent: Fri, Jun 4, 2010 2:45 pm Subject: Lightning-List: Wheel Balance Hey Bear: I guess I missed your message. How did the new type of tire bala nce work for you? Lynn ======================== =========== -= - The Lightning-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Lightning-List - -======================== ======================== =========== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== ======================== =========== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ======================== ===========


    Message 3


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    Time: 09:17:12 AM PST US
    Subject: Re: Wheel Balancing results within the week...
    From: "Bill Strahan" <bill@gdsx.com>
    I couldn't sleep last night, so went flying. When I took off I could tell the takeoff roll was MUCH smoother. I had high hopes. I landed and was surprised again at how smooth it felt. No, not my landing, but the airplane when it was on the mains. Unfortunately, as I slowed to about 20 mph or so, the shimmy was still there. Nick once said there was a specific wood piece to purchase from Home Depot, I believe. If he'll chime in that will be my next step. The shimmy now seems worse, but only by contrast. TKI has a fairly new runway and the plane is incredibly smooth on rollout right up until the shimmy, then it really shakes from about 20-15 mph. I want it fixed even more now that it feels so good the rest of the time. There was a 172 in the pattern with me (at midnight!) so I spent the rest of the flight playing "catch the 172, then extend my downwind." Sure, I could have flown slower than he did, but the plane is too much fun, especially on a glassy smooth crystal clear night. The HID light works well, but I wish I had put one in each wing now. Nick, any suggestions on that wood strip to change the resonant frequency of the gear? Bill Read this topic online here: http://forums.matronics.com/viewtopic.php?p=300350#300350


    Message 4


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    Time: 09:20:34 AM PST US
    Subject: Night flight
    From: "Bill Strahan" <bill@gdsx.com>
    I have about 3 hours at night in my Lightning now, and It's become apparent I'm going to have to do something to reduce the reflection on the canopy from the GRT EFIS. Has anyone else experienced this? I have the brightness turned all the way down, but the reflection on the canopy is very distracting. I was thinking a simple shield velcro'd to the edge of the EFIS would work fine. Anyone else had this issue? If so, how did you address it? Bill Read this topic online here: http://forums.matronics.com/viewtopic.php?p=300351#300351


    Message 5


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    Time: 09:25:22 AM PST US
    From: IFLYSMODEL@AOL.COM
    Subject: Wheel bolts
    Hey Bear: I am very happy that you found the problem before the wheel actually came apart. Keep us informed on what you find. Lynn


    Message 6


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    Time: 09:45:07 AM PST US
    From: "Mefford, Walt" <walt.mefford@garmin.com>
    Subject: Wheel Balance
    I did try dyna beads on the mains and really did not notice much of a difference. The biggest effect was by adjusting the tire pressure, tightening the axel nut so the drag on each main was approximately the same and going to 6 ply tires. This provided a noticeable improvement with tracking during taxi and an improvement in shimmy. It is still noticeable on rollout, however. Dyna bead effectiveness is related to tire diameter and rotation speed and 20 to 30 MPH seems to be where they are just starting to be effective with this size of tire. Walt Mefford N881WP From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of n5pb@aol.com Sent: Monday, June 07, 2010 9:12 AM Subject: Re: Lightning-List: Wheel Balance Lynn, I put 1 ounce into the nose wheel and did 3 full takeoffs and landings with breaking and taxi back. the shimmy I've experienced seem not to be there so I decided to put 1.5 ounces in each of the mains. When I got to the left main to remove the wheel, two of the 3 bolts that hold the wheel rimms together were missing and the 3rd one was just hanging in place. I was pretty stunned to see this (as you can imagine). The one remaining one looked as though it had been sheared off. I did a FOD walk around the local taxi area and found another piece of a bolt (this one still had the nut in place, but missing the head portion-appearing to be sheared off as well. Still haven't found the 3rd bolt. As a result of this, I haven't proceeded with the install of the dyna beads in either of the mains yet. More to follow... I would suggest everyone check their main rim bolts and nuts to make sure they are secure. Bear -----Original Message----- From: IFLYSMODEL@AOL.COM Sent: Fri, Jun 4, 2010 2:45 pm Subject: Lightning-List: Wheel Balance Hey Bear: I guess I missed your message. How did the new type of tire balance work for you? Lynn t" target=_blank>http://www.matronics.com/Navigator?Lightning-List tp://forums.matronics.com _blank>http://www.matronics.com/contribution ------------------------------------------------------------------------- ------- This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. Thank you for your cooperation.


    Message 7


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    Time: 07:44:48 PM PST US
    From: "Steven Sundquist" <sttwig@gmail.com>
    Subject: Night flight
    Maybe something here: glarestomper.com Steve Kit No. 48 -----Original Message----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of Bill Strahan Sent: Monday, June 07, 2010 9:20 AM Subject: Lightning-List: Night flight I have about 3 hours at night in my Lightning now, and It's become apparent I'm going to have to do something to reduce the reflection on the canopy from the GRT EFIS. Has anyone else experienced this? I have the brightness turned all the way down, but the reflection on the canopy is very distracting. I was thinking a simple shield velcro'd to the edge of the EFIS would work fine. Anyone else had this issue? If so, how did you address it? Bill Read this topic online here: http://forums.matronics.com/viewtopic.php?p=300351#300351




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