Hello Strida riders.
I’m aware that this forum topic states Advice from experienced owners on maintenance and repairs. And I am by no means an exdperienced Strida rider/mechanic. I’ve driven it maybe 10km.
Anyway, the story in short: I bought a Strida 5.2 second hand. What I thought was a bend/worn handlebar was in fact a worn handlebar locking hole on the frame.
As you may know this is not easily replaceable. While waiting for my new front tube I took a vice and bend the frame over the locking knob.
I took a photo of the result. I didn’t take a photo prior to the fix, so I drew out the procedure.
The result is a secure lock on the brass knob. The handlebar won’t ride out when driving the bike and doesn’t wobble any more when in locked position.
If you are interested, a longer description is on my tumblr blog. I didn’t want to bore you guys so read at your own risk. ^_~
http://mactirereviews.tumblr.com/post/82926525921/worn-torn-bent-strida-handlebar-lock-second
One thing I should point out, bending aluminium weakens the material. There is a risk of breaking when bending. And if it breaks while driving, well, I hope you are not putting you weight on it then 
