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Sweet Spot at 65mph

5 posts from 5 voices
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  1. Kigsby84

    I was thinking about an upgrade from my 650 to maybe a 1100 because I thought I was outgrowing the 650. The faster I went, the ride got less and less smooth. The mirrors would shake so much they were pretty useless and my hands would start to tingle. Now, I'm still kind of new so I didn't go past 60mph (hey, it was fast for me!). Now as I get more miles under my belt and I'm getting better at riding, we had to go on a pretty major parkway this weekend and I went 70 mph (I know, I know...but that's a big deal to me!) Anyway, I hit 60 and the vibration was getting annoying, but when I went 65-70 it was like someone flicked a switch and the vibration went away. My mirrors were clear, the handlebar wasn't shaking - it was odd. I thought maybe it was a fluke, but it did it over and over. As long as I get past 60 I think I'm fine and don't even think I want to upgrade now! Is this normal?

  2. TheGoltj

    Since it's next to impossible to synchronize the carbs at all rpm, and since carb synchronization contributes to the amount of vibration at various speeds, it's very possible that what you experienced was due to the carbs being synched at "cruising" rpm (4500 or so), which is what a lot of folks do because that's the rpm they're going to be doing most of their riding at.

    I'm presuming the speeds you're talking about are what the speedometer reads. Keep in mind that almost all motorcycle speedometers are off by as much as 10%. So, if you think you've been riding at 60mph, you're actually doing closer to 55mph. The reason I mention this is that unless you know (say by using a GPS) what your actual speed is, you may inadvertently cause hate and discontent among the cages that share the highways with you by riding significantly below the speed limit. I don't know how big a problem that is in Tampa, but here in L.A. it's cause for getting run off the road, if not run over.

  3. quicgmicg

    Great reply Goldy.

    I always synch my carbs at the specified idle speed and have noticed a bit more vibration with my 1100 around 60 too. Along with the carb synch, keep in mind that both the 650 and 1100 are high revving engines and tend to operate a little better in the upper RPM range.

  4. jbordelon13

    I've noticed the same thing. My bike doesn't get so shaky the mirrors are useless until around 85-90, but it's definitely "peaceful" at 65. Cruising at 65, I feel as if my bike is a knife slicing through a long tray of butter... Unless it's really windy.

  5. webster98

    i saw an ad for the "bar snake" thats a vibration damper you put inside your bars to cancel out vibrations so if you get one it can help trim away and remaining bad spots so you never feel the vibration "tingle"


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