Hello,

During the last few weeks I had to tighten my Dahon handlepost clamp as the lever felt too easy to close. I just tightened the screw that goes against the teflon block and forgot about it until today.

While I was at the train with my folded bike I noticed that one of the two bolts that hold the sliding part of the clamp was sticking out. Obviously, as I felt it was dangerous riding it this way, I tightened it and then had to untighten a bit the teflon block screw to be able to close the clamp.

This is the part I'm talking about, the bolt that came loose is one of the two bolts at the top (the ones which doesn't have an arrow pointing to them):



BTW, this is not my handlepost... mine is a lot cleaner

Currently the clamp closes ok, but I'm not sure how to prevent the two bolts from loosening. If I tighten them all the way, the sliding part can't move and the clamp becomes inoperable. If I leave them loose enough for the clamp to work, they're also loose enough to become loose over time as it happened. How am I supposed to prevent this?

Thanks!

Try a bit of superglue or loctite..(not sure which colour..) I have an old Dahon with a different type of handlepost. I was having the same trouble and some loctite stopped it coming loose..2 years now...

correct .... make sure that everything is nice and clean ... maybe even take the plate out and clean underneath ..watch out there are a couple little springs in there to move the plate back ...
than use Loctite
don't overtighten the adjustment bolt , Loctite might work here as well

Hmmmmmmm that is probably the worst piece of so-called tech that ever came out of Dahon. It was the subject of a recall.

Those 2 screws need Loctite as others have recommended. But beware that there are 5 or 6 screws in that abortion of a latch that can and will work loose, each of which can send you tumbling. They all need Loctite.

Your safest option is to get rid of that POS and replace with a later version. For a tech-savvy person, it is OK but for the average customer, no.

Thanks everybody. Problem solved!

[MENTION=30891]jur[/MENTION] mine is the revised version, not included in the recall. Anyway, I consider myself a decent mechanic... Always do the maintenance in all my bikes. Including forks and hydraulic brakes. I'm not scared by a folding handlepost.