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  #11  
Old 09-15-2022, 01:11 PM
seagull seagull is offline
 
Join Date: Dec 2019
Location: Highland, CA
Posts: 537
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At 1200rpm an out of balance nose wheel will shake but not as bad as when it decelerates around 1/2 that RPM and hits the natural frequency of the nose gear strut. Do it yourself and you will be a believer in wheel balance.
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  #12  
Old 09-19-2022, 10:35 AM
rmac1376 rmac1376 is offline
 
Join Date: Sep 2009
Location: Newport Beach, CA
Posts: 5
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it is your front wheel out of balance. mine did the same thing until i tried the early lift of nose on takeoff to minimize the wheel speed....no vibration! common problem.
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  #13  
Old 09-19-2022, 04:38 PM
Jcurry Jcurry is offline
 
Join Date: Jul 2021
Location: Cocoa,Fl
Posts: 116
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Quote:
Originally Posted by HansLab View Post
The shake is quite severe to be originated by the frontwheel
On several occasions, I thought my engine was going to shake right off my airplane. Getting the nosewheel up right away and doing the wheelie takeoffs solved the issue.
I confirmed this was causing the issue by intentionally holding my nose wheel on the ground longer than normal. It shook everytime I did this...
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Last edited by Jcurry : 09-19-2022 at 04:55 PM.
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  #14  
Old 09-22-2022, 10:22 AM
HansLab HansLab is offline
 
Join Date: Jan 2015
Location: Netherlands
Posts: 172
Default Chapeau!!

Still cannot believe the results, but: after having balanced the frontwheel the shaking was gone.
Entirely.
30 grams of lead made all the difference. And concerning the small diameter of the wheel that is quite a lot, but the results count.

How I love this forum.
Let's continue it for a few decades.
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  #15  
Old 09-22-2022, 12:35 PM
WJaviation WJaviation is offline
 
Join Date: Jul 2020
Location: Pensacola
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Quote:
Originally Posted by HansLab View Post
Still cannot believe the results, but: after having balanced the frontwheel the shaking was gone.
Entirely.
30 grams of lead made all the difference. And concerning the small diameter of the wheel that is quite a lot, but the results count.

How I love this forum.
Let's continue it for a few decades.
What device did you use to balance the wheel? Iíll be doing it this winter as well.
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  #16  
Old 09-22-2022, 01:35 PM
HansLab HansLab is offline
 
Join Date: Jan 2015
Location: Netherlands
Posts: 172
Default balancing

I just went to a motorcycle workshop, where they had the appropriate gear to balance the frontwheel (Automotive did not work for the rim was too small for the gear they use there). Just stick-on 5 grams lead pieces. OUtbound pressure keeps it tight, the man said when I figured they' d be gone with a flight or two...
We'll see.
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  #17  
Old 11-14-2022, 02:42 PM
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Tony_T Tony_T is offline
 
Join Date: Dec 2008
Location: Lacey, WA
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It is quite possible to install the stick-on wheel weights inside the wheel halves. Turn the wheel on the motorcycle wheel balancer and mark the heavy spot. Once the tire is deflated, remove the hardware and separate one wheel half from the tire, tube, wheel assembly without disturbing the clocking of the tire and apply weights inside the wheel halves opposite the heavy spot. Reinstall hardware loosely and repeat as necessary to achieve excellent balance.
Clean the places inside the wheel where the weights will go first with a suitable solvent, rubbing alcohol works well.
We no longer have lead weights available here in the US, and the weights shown are a lighter metal so it took several of them to balance the tire assembly.
This is the nose wheel under discussion. On the mains the weights can go on the outside.
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Last edited by Tony_T : 11-18-2022 at 10:25 AM. Reason: Replaced image with a better picture
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  #18  
Old 11-15-2022, 11:47 AM
HansLab HansLab is offline
 
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https://photos.google.com/share/AF1Q...RnSnJOYVFqZUl3

https://photos.google.com/share/AF1Q...RnSnJOYVFqZUl3

weights glued to the outside of the frontwheel. Comments of the supplier: "centrifugal powers will press the weight more thourrow"
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