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Why So Many Stem Stackers?


Matt Vandart

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I'd be alot more worried about steerer tube snapage than bar snapage

As someone running 3 miles of stackers, i'd piss myself laughing if i snapped my steerer.

I find it completely unfathomable that anyone could ever do it. Yeah you might have a little more leverage but the fact of the matter is that the large majority is still held perfectly tight inside the headtube.

I've known steerers to give, and it's always at the crown race - when do they ever break above the ht?!

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And also I want to know: is it OK?

I had it like that on my Inspired for a while when I had just got it and the only problem was I couldn't get it tight enough to stay still after landing crappy 180's.

Was just a pain to have to straiten it up all the time.

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yeah 28.6mm tube from cheapest crmo would have a tensile stregth of around 11 tons,good luck snapping that!

The try all Alu forks still snap off at the top of the headset like twigs. The headset design doesn't help but still!

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The closer the stem is to the top of the headset bearings the less stress there will be in the steerer tube. Loads of stackers like that is sure to cause a lot of leaverage and stress on the steerer tube.

But there may possibly be some truth in having some spacers to allow some flex to reduce high stress points. But I don't really know just guessing

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SOOOOO.. Help me please with my problem: how many stackers I need with trialtech 70-35 stem, trialtech high rise bars and element frame if I 5.97 ft tall (182cm).

Now I have 3cm of stackers and it's max that I can set with sawed-off (222mm instead of 235) steerer tube on my inspired forks.

Is it ok or more stackers would be better as said in the beginning of this topic?

Now I know one thing - with this thumb.png bars(30mm stackers, bionic riser) bike was like crap.

And what about 70-35 stem? Isn't reach too short?

image.png

Now with onza 100x30 stem my bike looks like:

thumb.png

Edited by clerictgm
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i left my steerer original,my problem is that my frame has only a 100mm headtube,so i took some ally tube with 28,6 inner diameter and cut off a 50mm piece,only way to get into some streety height unfortunately.

learned from that,new frame has 120 ht.

Edited by FamilyBiker
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  • 2 months later...

as the dark lord was on tf recently to sell his "inspired 20"protos" i was remembered of the fact i would be able to get something up from the dead,i.e.this topic...

:wink2:

purchased some blkmrkt badaboom 3" bars the other day from the german company hibike for 9.99 euro(its true!) and thought:

what about them,anyone has some opinions?if they suck for streettrials theyre going directly on my old marin ss mtb,just curious.

they´ve got 8° back/5° upsweep,76 mm in height.

i´m tying to avoid stacker towers with that,so keeping the topic haha

post-30389-0-86378500-1361562952_thumb.j

Edited by FamilyBiker
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