Fighting residual wobblies

Discussion in 'Cruzbike Class (Riding & Refining your Technique)' started by Kit Bradley, Jun 13, 2017.

  1. Kit Bradley

    Kit Bradley Member

    Howdy, again! I'm back with new questions that I hope can get answered! Mostly, about wobble on my Sofrider v3.

    I've gotten to the part where I'm having a lot of fun on the bike, able to ride as far as I ever have, and I'm going faster than I ever have on any bike, at that. (Admittedly, I've never owned a truly fast bike.) While I feel safe on the bike, there's a little more wobble than I've had on other bikes, upright or recumbent. For me, the wobble tends to even out when I'm accelerating or climbing when I'm pulling back harder on the handlebars and my cadence has gone down. As my cadence increases above 70 or so, I find that some wobble starts to creep in.

    And, sometimes, the wobble feels. . . nice. Like, the boom gets into a rhythm that doesn't seem to affect forward speed. Is this something I should avoid, or learn to reproduce? Is it good, bad, or neutral?
     
  2. tiltmaniac

    tiltmaniac Guru

    If you like it, and you're having fun, and you want to have fun, keep it :)
     
  3. jond

    jond Zen MBB Master

    V 20 rider caveat. Using the boom of the bike involving the upper body for additional power generation is an advantage of the platform.

    So yes wobble can and does naturally occur . Especially powering on. If you get out of sync in the learning process the wobble can cause consternation with an unintended choice of direction. This is phased out totally with experience so that only a good wobble is left in the choice of direction line.

    I am as agile on the v as compared to my df. And faster.
     
    super slim likes this.
  4. I tended to weave for months after learning to ride the Q, and it concerned me, like "am I ever really going to get the hang of this." One day I realized that it was no longer a losing-control wobble; it was natural, and no worse than I'd ever done on my uprights. I was able to relax a lot more after that, which of course lessened the weaving.
     
    super slim likes this.
  5. trapdoor2

    trapdoor2 Zen MBB Master

    My hypothesis: wobbles are part of biking in general. However, because the typical riding position differences between recumbent and DF, any 'wobble' feels significantly different. Recovery from tiny wobbles on a DF is primarily a shift in balance, displacing shoulders and hips for small corrections. Mostly because we started young (on DFs), it became 2nd nature to do these things and we forget that we're doing it.

    On a recumbent, almost all wobble recovery is a function of steering, as our body position is generally fixed. This is exacerbated as seatback angles get more shallow. For adult 're-learners' it takes much longer for us to divert repetitive conscious actions off to sub-conscious 'muscle memory'...we simply have to keep at it until most of it is engrained. I think there will always be some 'oops!' moments but as you continue to ride, they become less significant.

    I had to go back to riding my DF (years ago) to prove to myself that my recumbent wobbles were not significant. I have a good stretch of flat, straight pavement on the MUT that is about 1/10 mile from my house...and it has a painted line (to the separate walk/run lane from bike lane). I rode both, trying to hold as close to that line as possible. Turned out to be same/same for me, so I quit worrying about it.
     
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  6. hurri47

    hurri47 Well-Known Member

    Ride any bike through a puddle and look at the trail it leaves. Bikes wobble. My Cruzbike enjoyment increased dramatically when I quit holding myself to an impossible standard of stability.

    -Dan
     
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  7. telephd

    telephd Well-Known Member

    In the beginning I had a high speed wobble that used to catch me off guard. IME the wobble subsided with a more efficient peddling technique. I found that my right leg was dominant and that induced a swerve/wobble to the left periodically. When I worked on smoothing out my peddling the wobble seemed to disappear. By far my worst experience was coming off of a roll over and pouring on the power....got my attention in a big hurry.

    Have fun learning to pedal circles ;-)
     
  8. Kit Bradley

    Kit Bradley Member

    Thanks, everyone! I'll factor in that I might be overanalyzing it. I mean, the Sofrider is both my first short wheelbase recumbent and my first Cruzbike, and I felt like I wobbled on my LWB for a while. (Though how long, I no longer remember! After some point, it just became something I didn't notice.) And, of course, all bikes wobble. So, because it's a new kind of bike for me, I'm likely overanalyzing it.

    Otherwise, relax, and learn to use the wobble to my advantage! That's mostly what I wanted to hear.

    FWIW, I think that I am also right-leg dominate. When coasting, I find that my right leg is more upright in the pedals than my left, and when I try to replicate it with my left leg that I do wobble unacceptably. I know my legs are of equal physical strength - I also lift weights, and years of lunges have sorted that out - so it's not that. I've been working on coasting with both legs in any position, but I can also work on pedaling technique. A few hundred thousand more pedal strokes are likely to get that fixed. ;)
     
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  9. McWheels

    McWheels Active Member

    Yes, the wobble comes to us all. Even after 300 miles I would find I needed a periodic 'balance correction' every 100 metres or so. It's slowly got less and less and most of the time all those micro-corrections just happen. I also sold the DF to help pay for my V2k [softrider] so I had no option but to square it away through persistence.
     
  10. Rod Butler

    Rod Butler New Member

    Is it too radical to suggest that for some of us, the left and right crank length may have to be slightly different, the bike is symmetrical, we are not.
     
  11. I've seen this discussed on BROL several times. The consensus seems to be that it's better to shim the shoe and/or cleat for slight differences in leg length.
     
  12. Doug Burton

    Doug Burton Zen MBB Master

    Wobbles... This may help you or it may not.

    Folks who have been around here a looong time may remember I built a conversion kit bike on a discarded Softride MTB frame with a pretty reclined hardshell seat. The "Redbike" taught me an awful lot about the dynamics of MBB bikes.

    I remember taking the bike to the Outer Banks for vacation, and to ease getting it in the van, I lowered the handlebar height and rotated the bars such that the grips were closer toward the seat. Not much, maybe 3 inches.

    I took the bike out on a ride on the NC12 bike lane (a wonderful piece of infrastructure) and suddenly found that I had a lot of trouble keeping the bike on a straight line - it wobbled. It cornered fine, but it seemed like regardless of how much I relaxed my shoulders, when I pedaled the bike wanted to move off of straight ahead.

    Now I was a pretty experienced rider at that point, so this phenomenon really intrigued me.

    I restored the handlebars to their original configuration, and instantly the bike was back to its former obedient self.

    After moving the bars to various positions to explore this, I discovered that if the grips were 3 or more inches behind the axis of the fork steerer tube and the Cruzbike steering column, the wobble would always come back.

    Perhaps if you look at this on your Sofrider, you may find some insight. I realize the Vendetta and Silvio designs violate this "3 inch rule" and folks have little trouble riding them (although, interestingly, i have more trouble keeping my Silvio 2.0 out of the wobbles than my Silvio 1.0 or Sofrider or Quest.)

    I also find that if my arms are more stretched out, it's easier to keep a straight line when pedaling.

    Presented for your consideration. Best of luck in any case.

    red-1413.JPG
     
    Charles.Plager and Eric Winn like this.
  13. bladderhead

    bladderhead Zen MBB Master

    I thought my Silvio was better behaved after I truncated it.
     

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