Wobbling on Birdy's rear folding point
#1
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Joined: Jan 2019
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Wobbling on Birdy's rear folding point
Hey everyone, just wanted to ask. Today is the second time I used my Birdy Classic for a ride since I got it. I noticed that there is a slight wobbling on the rear folding point whenever I try to lift the bike through the saddle. Is this supposed to be normal or something's off? I'm just worried that it may snap on the road while riding.
Edit: it won't let me post the video URL
Not sure if I'm just paranoid but I don't remember it wobbling like that before I left.
Please enlighten me, thank you!
Edit: it won't let me post the video URL
Not sure if I'm just paranoid but I don't remember it wobbling like that before I left.
Please enlighten me, thank you!
#3
If it's wobbling from side-to-side (like a fish's tail), it needs attention. The rear triangle does not lock up tight when the bike is unfolded, and you can expect it to move up and down, depending on how worn the rear elastomer is. The rear triangle rotates on a steel pin, and it can wear where it runs through the frame. If you search hard, there is a place which made these pins with roller bearings, which were almost impervious to wear. Another maker also made titanium pins which weighed half as much as the originals. If the frame is worn to the point that it is moving around in the frame, you can other have it drilled out and have a bushing pressed in, or drill it out to fit a larger pin.






