rumble strips dangers - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 15 (permalink) Old 05-23-2017, 06:14 PM Thread Starter
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rumble strips dangers

anybody ever have cross the interstate shoulder rumble strip at speed and live to tell about it?

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post #2 of 15 (permalink) Old 05-23-2017, 06:34 PM
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Can't say that I have but I get the feeling there's a story behind this.

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post #3 of 15 (permalink) Old 05-23-2017, 08:32 PM
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I dont think they should cause any problems on a MC.

At some exits they have them across the whole lane, so you dont slam the toll booths at 80mph.

might scare the kwrap out of you though...
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post #4 of 15 (permalink) Old 05-24-2017, 03:38 PM Thread Starter
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I dont think they should cause any problems on a MC.

At some exits they have them across the whole lane, so you dont slam the toll booths at 80mph.

might scare the kwrap out of you though...
thing is you cross those at 90 degrees not at an angle like what you would have to do on the shoulder ones, i'v crossed the shoulder ones at 45 or 50 and they grab you pretty good at that speed but recovery is easy, i guessing at a certain speed recovery might not be possible, like if you had to use the shoulder to get out of trouble with no time to slow down before crossing that strip.

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post #5 of 15 (permalink) Old 05-24-2017, 08:20 PM
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I googled this a bit today and I dont see any indication of danger to MC riders.

They also put them on the center line on some two lane roads so you dont cross into on coming traffic.

They are dips or bumps scalloped into the asphalt, and they dont have any directional component to them. Not like when they groove the pavement to put down new asphalt, or the gratings on steel deck bridges.

It might deflect your steering angle a bit but I dont think it would be enough to knock the wheels out from under you, like hitting a median or a curb. Motorcycles are incredibly stable because of the gyro forces of the spinning wheels, esp at highway speeds. It would take a tremendous force to knock a motorcycle over sideways.

Now Im going to have to find a road with rumble cuts in the center line and try it. (no officer, I have not been drinking...)
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post #6 of 15 (permalink) Old 05-25-2017, 07:45 AM
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I've crossed over the center ones on a two lane just to see what they do. It's a rough ride just like in a cager but not something that will put you down. To me some steel bridge grates are worse.
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post #7 of 15 (permalink) Old 05-25-2017, 07:50 AM Thread Starter
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Quote:
Originally Posted by KCW View Post
I googled this a bit today and I dont see any indication of danger to MC riders.

They also put them on the center line on some two lane roads so you dont cross into on coming traffic.

They are dips or bumps scalloped into the asphalt, and they dont have any directional component to them. Not like when they groove the pavement to put down new asphalt, or the gratings on steel deck bridges.

It might deflect your steering angle a bit but I dont think it would be enough to knock the wheels out from under you, like hitting a median or a curb. Motorcycles are incredibly stable because of the gyro forces of the spinning wheels, esp at highway speeds. It would take a tremendous force to knock a motorcycle over sideways.

Now Im going to have to find a road with rumble cuts in the center line and try it. (no officer, I have not been drinking...)
i'm worried that crossing one at speed could cause an unrecoverable tank slapper
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post #8 of 15 (permalink) Old 05-25-2017, 08:00 AM
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I dont think a properly designed, maintained (wheel bearings, steering head..) and loaded MC is able to get into a tank slap instability.

Its an interesting topic, Ive never seen any thorough studies on tank slap.
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post #9 of 15 (permalink) Old 05-25-2017, 09:18 AM
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I hit one at 75 and didn't have any issues...it's a rough ride for sure, but it wasn't anything I couldn't handle.

Sent from my Nexus 5X using Tapatalk
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post #10 of 15 (permalink) Old 05-25-2017, 02:29 PM Thread Starter
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I hit one at 75 and didn't have any issues...it's a rough ride for sure, but it wasn't anything I couldn't handle.

Sent from my Nexus 5X using Tapatalk
was it kinda like a heavy vibration and that was it, good i feel my fear subsiding already
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