"Weave" and "Wobble" Explained - (Video) - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 17 Old 09-11-2013, 08:50 PM Thread Starter
What Kinda Bike Is That?
 
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"Weave" and "Wobble" Explained - (Video)

Please take the time to watch the video embedded below. Even though it is nearly 30 years old, the information contained within it is still contemporary to our time.

B.

2007 DL-650 (I gave away in 2012 with 111,000 + miles)
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post #2 of 17 Old 09-11-2013, 09:12 PM
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Let's see, we only need a good rear tire, correct tire pressure, no loaded top box or panniers, to lay down on the tank and a BSR. Well I guess I can always eat more Interesting find though. Brave test riders taking their hands off the handlebars and also riding through a wobble that is so severe that it shakes their feet off the pegs

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post #3 of 17 Old 09-11-2013, 10:22 PM
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10 minutes and not even a hint at what actually CAUSES it. I've been on bikes up to 160 mph and can't say i ever experienced weave. has it been designed out of bikes since this video was made?

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post #4 of 17 Old 09-11-2013, 10:52 PM
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Neat video, wow, those two must have known what they were really doing on two wheels to be "weaving" up to 90 mph like that.

Thanks for posting...:beatnik:

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post #5 of 17 Old 09-12-2013, 01:36 AM
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I had a BMW R90S. It never wobbled. Watching the segment with uneven fork leg compression, all I could think of was it needed a fork brace.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

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post #6 of 17 Old 09-12-2013, 03:17 AM
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Great classic video -- thanks.
I'll be more informed if ever that happens.
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post #7 of 17 Old 09-12-2013, 11:39 AM
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very cool video.
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post #8 of 17 Old 09-12-2013, 01:49 PM
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Quote:
Originally Posted by teevee View Post
10 minutes and not even a hint at what actually CAUSES it. I've been on bikes up to 160 mph and can't say i ever experienced weave. has it been designed out of bikes since this video was made?
Largely so, yes. Having said that, my Vee has developed a bit of a weave since I made some suspension changes some years ago, at speeds (indicated) of around 160 and up. What's interesting is that the weave actually goes away when I'm cornering at those speeds, which suggests to me that my theory that there is insufficient sag at the front end might be correct (because the suspension compresses under cornering loads). But I might be way off.

Amazing to think that manufacturers actually sold bikes with such horrendous handling issues out of the box. Surely doing so today would be asking to be sued out of existence. I've always figured a bike should be reasonably safe and stable up to the maximum speed it is capable of based on its power and gearing. The Vee is actually electronically capped at about 200 km/h (125 mph) for just this reason - it's capable of more, but the handling may become dangerously unstable above (or even below, right Greywolf?) that speed.
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post #9 of 17 Old 09-12-2013, 02:20 PM
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Quote:
Originally Posted by V-Strom Ry View Post
electronically capped at about 200 km/h (125 mph) for just this reason - it's capable of more, but the handling may become dangerously unstable above (or even below, right Greywolf?) that speed.
Adding a big windscreen and putting too much weight in a top box will bring the danger speed down significantly.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

Please vote in the poll on what Strom(s) you have at https://www.stromtrooper.com/informat...-you-have.html
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post #10 of 17 Old 09-12-2013, 04:17 PM
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Although, my bike actually does develop a "weave" as opposed to the bikes in the video above, which I would call more of a "speed wobble" or imminent tank slapper. The weave my bike develops is of a much lower frequency than in the video. I had a bike (with a bent frame) years ago that would go into speed wobbles like that. I actually found the same thing - rolling off the throttle would make it worse, but shifting my weight (like laying down on the tank) would quell it, at which point I could slow down.
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