I need a stem
- Thread starter pnj
- Start date
I've had good luck with this DMR, and it less than $50...
http://www.ebikestop.com/dmr_headstock_stem_50mm_2318mm_black-SM3052.php
http://www.ebikestop.com/dmr_headstock_stem_50mm_2318mm_black-SM3052.php
headstocks seem excessively heavy. Look into truvativ stems. Relatively cheap and bombproof. Havent heard/experienced any slipping problems myself
This is what I've got. I can't seem to get it tight enough. I guess I can try a cheater bar, worse that would happen is the bolts break...
http://www.jensonusa.com/store/product/ST308A11-Truvativ+Holzfeller+Mountain+Stem.aspx
http://www.jensonusa.com/store/product/ST308A11-Truvativ+Holzfeller+Mountain+Stem.aspx
Are you greasing your steer? If so, I would try without and see if that helps. Sound silly, but try taking a piece of heavy-grit sandpaper and scuff up the steer/inside of the stem. It has helped for me.
Is it slipping under hard crashes, or while casually riding around?
The star-nut only controls the preload of the headset. That has nothing to do with your stem slipping. You could pre-load the headset, tighten the stem, and remove the top-cap/bolt and have no problems (supposing your stem works as its intended.) Welp, I'm out of ideas, to be honest. Maybe someone else can chime in.
That stem should provide decent holding power. Check your headset, perhaps one of the bearing cups is cracked or something.
Clean the stem and top of the steerer really well, maybe even with some denatured alcohol or something like that.
Clean the stem and top of the steerer really well, maybe even with some denatured alcohol or something like that.
Even with a cracked bearing-cup... His stem should not spin on the steer under normal riding conditions. now hard crashes or laying the bike over, etc its acceptable...
Well, since he didn't say whether the problem was his bars turning, or his headseat loosening, we are both just guessing now, aren't we? 
I seriously doubt it's the former though, unless you are crashing, the stem has to be pretty loose to mis-align the bars.
I seriously doubt it's the former though, unless you are crashing, the stem has to be pretty loose to mis-align the bars.
Touche!! I wasn't even thinking of his headset coming loose when I read "HOLD MY FORK."
What about one of these? http://jensonusa.com/store/product/ST402A04-Easton+Havoc+Dhfr+Stem+07.aspx
that stem only works on 25.4 bars
Damn.. didn't realise the 31.8s were out of stock...
headset comes loose, stem doesn't twist on the stem. it's weird, but I will try to crank the fvck out of the bolts and see what happens. it's a new bike, all I did was swap the stem. a task I am more then capable of doing....
are you sure you have enough headset spacers?
Perhaps the bolts on the stem are stripped? I've had that happen. That stem should not be that crap.