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View Poll Results: Dyna Riders, have you ever experienced Dyna Death Wobble?
NO
113
74.34%
YES
39
25.66%
Voters: 152. You may not vote on this poll

Dyna Death Wobble Poll YES OR NO

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Old Jan 23, 2022 | 07:41 AM
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Originally Posted by Mchad
THATS hysterical
thanks……
 
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Old Jan 23, 2022 | 08:29 AM
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Originally Posted by rocket23
thanks……
that was directed at snake eyes, not you, but anyway.
 
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Old Jan 23, 2022 | 08:34 AM
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Originally Posted by Mchad
that was directed at snake eyes, not you, but anyway.
my reply was a chance at satire. Slim chance lol
 
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Old Jan 23, 2022 | 08:44 AM
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Originally Posted by rocket23
my reply was a chance at satire. Slim chance lol
Ahhh, ok. Probably a good attempt. I’m just slow sometimes lol
 
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Old Jan 26, 2022 | 12:41 PM
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Can anyone expound on the geometry behind the wobble.. I mean the actual math that shows a correlation between wobble and rubber mounting the motor? I was hoping to see that
 
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Old Jan 26, 2022 | 01:23 PM
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Originally Posted by lespaul6
Can anyone expound on the geometry behind the wobble.. I mean the actual math that shows a correlation between wobble and rubber mounting the motor? I was hoping to see that
I doubt anyone here has. Maybe take it on yourself as a fun project...?
 
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Old Jan 26, 2022 | 01:28 PM
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Originally Posted by lespaul6
Can anyone expound on the geometry behind the wobble.. I mean the actual math that shows a correlation between wobble and rubber mounting the motor? I was hoping to see that
Motorcycle Dynamics by Vittore Cossalter.
 
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Old Jan 26, 2022 | 02:31 PM
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Originally Posted by Max Headflow
Motorcycle Dynamics by Vittore Cossalter.

I saw that.. looks like no one thing can be the sufficient cause e.g. swingarm design etc because oscillations originate from multiple sources at one time, under the correct conditions. Wobble vs weave theory... all complicated stuff. I was curios because it was pointed out in an earlier thread that the Harley engineers got the geometry wrong on the dyna... I wanted to see the dissenting engineers mathematics that would prove that.. I dont' think its out there
 
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Old Jan 26, 2022 | 02:49 PM
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Originally Posted by rocket23
I dunno if it's a ''death wobble'' but before it went into hibernation it did have a wobble at low speed with the hands off the bars.........any thoughts??
Originally Posted by Bubba Zanetti
Your steering neck bearing bearings need adjusted.
Check your fall away and adjust from there.

https://m.youtube.com/watch?v=uJzQPsE4AoE
By all means, listen to Bubba; he knows FAR more than I about motorcycles, maintenance and setup, but ..... I had the low speed "hands-off" wobble and lost it with new tires. The front was cupped. Keep your air pressure up to snuff to minimize cupping and it may go away.
 
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Old Jan 26, 2022 | 05:39 PM
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Originally Posted by BelchFire
By all means, listen to Bubba; he knows FAR more than I about motorcycles, maintenance and setup, but ..... I had the low speed "hands-off" wobble and lost it with new tires. The front was cupped. Keep your air pressure up to snuff to minimize cupping and it may go away.
Good call, that’s a good possibility for a wobble too.
And believe me, I don’t know a whole helluva lot more than what I’ve learned here.
 
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