00:03Hi my name's Al and today I'm going to show you how to change your handlebar height by adjusting
00:09your stem. In order to change the height of your bars and adjust your stem there's not many tools
00:16that you need at all. In most cases just some allen keys will do the job, although some stems
00:22will use torx fasteners so you may need torx keys and we would recommend the use of a torque wrench
00:28just to make sure everything's tightened up properly. The amount of adjustment that you've
00:32got regarding bar height is limited by the length of stereo tube that you've got here so you'll have
00:39a certain number of spacers and we're basically going to be moving those around in order to lift
00:44or lower the stem. If you want to go any further then you're going to need a different stem with
00:50either a positive or a negative rise. We wouldn't recommend using any more than 30mm worth of
00:57spacers underneath the stem because it can put extra strain on your stereo tube which could cause
01:04it to fail. First thing that we're going to do is we're going to loosen the stem so in this
01:08case it's
01:08a T30 Torx key and we're undoing the pinch bolt there and that will leave the stem free to move
01:19on
01:20the steerer tube. With that loose we're going to move on to the preload bolt here on the top and
01:32all
01:32that this bolt and the top cap does is it compresses the whole bearing assembly by pushing the stem down,
01:40preloading the bearings and getting rid of any slop in the steering. It should only be nipped up if
01:49it's over tightened it'll crush your bearings the steering won't feel so good. So with that removed
01:56and this bolt undone you'll see I'm holding the fork. Reason for that is it is free to drop out
02:01at any
02:02time. There's nothing holding it in anymore other than a bit of friction. So now we're able to remove
02:12our stem like so and we can reposition these spaces wherever we like in order to change the height.
02:23So what we're going to do is we're going to put all our spacers in this instance underneath the stem.
02:34So we've got two tens, two fives so 30 mil no more than that. No bike should ever come supplied
02:42with
02:42more than that anyway really especially with a carbon steerer. And we must always ensure
02:53that there's only a couple of mil gap between the top of the steerer tube and the edge of the
02:59stem.
03:01Any more and you will again be putting too much stress on the steerer tube which could cause it to
03:06fail which would obviously be horrible. That gap there is absolutely necessary in order to take
03:13the recess here on the top cap and to give a little bit of adjustment so as we tighten this
03:22preload bolt
03:24there's enough space for everything to compress. If the steerer was flush with the top of the stem
03:29it wouldn't go anywhere and you'd never be able to adjust your headset properly.
03:33So we're just going to nip this bolt up. Check that everything's straight.
03:43You might want to do that on the floor just to get it spot on.
03:48And then it's literally finger and thumb and that should leave the bearings turning
03:54nice and smoothly with no play. Once that's done you need to re-tighten the stem
04:03so we're just going to nip that up.
04:07And then we're just going to finish that off with a torque wrench.
04:11Most stems will have a torque setting on them. In this case it's eight newton meters.
04:16So set your torque wrench appropriately
04:23and tighten away. And that's that. Stem's been raised.
04:30It's a good idea just to do some final checks before you go out on the road to double check
04:35that adjustment of your headset. See everything should be feeling nice and smooth. And if you grab
04:41the bars and try and flex them side to side then you should feel no play at all.
04:51Again just to make sure stick the front wheel between your legs.
04:56Try and move the stem. If it's all torped up correctly it shouldn't move but it's worth checking.
05:03So that's it. We're all done. Ready to go out and hit the road.
05:06Thanks for watching. See you next time.
05:08See you next time.
05:09Bye.
05:09Bye.
05:09Bye.
05:11Bye.
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