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Discussion Starter · #1 ·
Hey...

I accidentally messed w/ my preload setting on my Manitou Spyder R (my bike is old: http://forums.mtbr.com/showthread.php?t=481076)

The preload setting is on top of the stem. I haven't worked on the bike for a while, and I forgot what it was...so I started tightening it. When I remembered what I was doing, I stopped, then tried to loosen the bolt a bit (trying to undo what I had done).

So, this got me thinking...what the hell was I messing with? How does a "preload" work, and did I screw anything up?
 

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T.Wrecks said:
Hey...

I accidentally messed w/ my preload setting on my Manitou Spyder R (my bike is old: http://forums.mtbr.com/showthread.php?t=481076)

The preload setting is on top of the stem. I haven't worked on the bike for a while, and I forgot what it was...so I started tightening it. When I remembered what I was doing, I stopped, then tried to loosen the bolt a bit (trying to undo what I had done).

So, this got me thinking...what the hell was I messing with? How does a "preload" work, and did I screw anything up?
If you didn't loosen the stem clamping bolts that hold the steerer tube, you didn't change the preload.

What's preload? As I understand it, when you install a threadless fork, after you've put the spacers and stem onto the steerer tube and put the top cap on, you tighten the top cap allen bolt to take all the slack out of the headset assembly ("preload").

Then you align the stem/handlebars with the front wheel and tighten the stem clamping bolts that hold the steerer tube. Once those are tight, that top cap is doing nothing. You could remove it and ride, if you wanted, but it'd look bad. :D

jeff
 
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