I’m building a mid 2000s full suspension mountain bike and only have about 20mm of steerer tube for my stem to clamp to. are the quill style steerer extenders safe if most of my stem is clamped to the steerer? This could be solved with lower stack headset and stem I’m sure but that gets a little pricey
by Aware-Reindeer7770
12 Comments
Short answer: no. Long answer: Noooooooooooooo
These ones definitely aren’t.
Maybe a dumb question because I’m sure forces are applied differently on the two but is there that much difference between these and an old school quill stem
Damn you! I tried to swipe!
My recommendation is for people to find a bike that fits them and not try make a bike that does not fit them fit them. If that makes sense.
Does it look like the tried and trusted old school quill stem? Is it held together by bits of rubber rather than steel? For casual use, maybe but not for anything serious. The general rule is that the more fixings you have on any part of the bike, the more it is just another place to fail. Bikes are inherently not “safe”. everything is exposed and made to be as light weight as possible. It’s always a matter of degree. This particular style of design I have had problems with in the past. I’m very suspicious of it. I would be happier with a different style stem raiser (that you can buy) that more like an older quill stem.
uh, those looks sketchy AF. i’d rather install one of those steerer tube extenders that go on top (which aren’t considered a very good idea either).
seriously, if a stem with an upwards angle and raised handlebars still don’t do it for you, your frame is way off and you should shop for a new bike.
I used such a kind of anchor, and it went up from the steer tube. Fortunately stem held steer tube much better.
But in your case, stem will hold that badly anchored in steer tube (and could blow it up, is tube is not steel.
There is probably a good reason why mountain bikes don’t come with them anymore…
Holy Christ, as if something like this exists.
I recommend buying a cheap angle stem from Amazon or AliExpress instead. They work fine and are much safer than that.
I used one from velobike, have used it for months, never had a problem, mine is cemented in, insertion of the expansion plug is 50mm instead of the normal 30mm, there is a reason why the longest one is 18mm, safe imo. Wouldn’t recommend the cheaper one though.