How to measure and cut a fork steerer tube for any threaded fork, suspension or rigid. Let’s do this.
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Notice our Gap here so got the top edge Here down to the top of the steer tube That’s of approximately three mil and That’s our excess space that’s the Gap We need So before we make our cut make sure you Got all your components in there it’s Functioning as if you were to Write it and then before I tighten up my Stem I’m just compacting everything Pushing the bottom of the fork top of The handlebar and stem Getting all that play out we’ve got your Necessary spacers in there You could go ahead and tighten up your Clamp if you have to walk away that way You kind of lock in your setting right There I’m going to go ahead and use this you Can use a marker something white if you Can get something fine enough but I’m Going to Mark the top here I’m just Going to do a gentle scratch with this Brand new blade and these steer tubes Are aluminum If you’re working with carbon this will Work too so I’m just going to do a Little just a little scratch the surface And kind of get it so it’s at least a Quarter inch or more so you can see it And then we can go ahead and disassemble Everything So this everything else will come back Off
So I’m going to go ahead and use the Vise and I’m going to use this as a part Tool this is an old one it’s an sg-6 so This is going to allow me to install my Fork has a guide for my blade it’s going To cut a nice straight line in there but This is going to go in Black portion is going to be out here Because my Fork’s going to be here Tighten this really good And then basically so the line we have Here the one I first scratched that’s at The Top Line we’re going to go three Millimeters below that and take in come Take into consideration the thickness of Your blade so if you don’t want to go Too thick but I mean you may have a Millimeter or two to play with so main Thing is that we don’t cut so far down That the clamp or the stem does not get Enough gripping material so I got this Marked to about Three mils so one of those slashes or Those little markings one two three and Then you’re going to put another marking So would be something like right about There Boom so this is where we do making our Cut that guy right there So Fork’s getting installed this way Blades coming in here so I’m going to Look down this site I’m going to put this in Kind of roughly tighten this top up this
Will hold your fork [Applause] So when you make your cut here your Piece is going to fall but your fork is Going to stay clamped and still it’ll be Safe but I want to get some eyeballs Inside there so I’m just going to drop My blade down let it sit take a peek Over here see where I fall And I need to slide out maybe a Millimeter adjustments in that little Mark here’s a regular hacksaw here uh He’s a new one Not sure what teeth something small Something Cuts well so remember the Blade the easier to cut Really can’t if you’re doing carbon you Could use a carbon specific cutting Blade Um Then you got to change your head here Because it’s only so thick the carbon Blades are much thicker so it won’t fit In this style this is very thin barely Fits this metal here Uh you could use a metal blade for Carbon just cut slowly maybe throw some Tape over your cut don’t inhale wear a Mask cutting metal with this is a metal Cutting blade teeth are going going Forward it’s going to cut going forward A little bit of weight of the blade a Little bit of pressure when you’re Coming back I just let the weight of the
Saw kind of drag back you don’t need to Push hard coming back just gentle Pressure keep it nice and full try to Use the whole length of your blade here Foreign [Music] We’re going to take off the sharp edge Here And it could be for safety so you don’t Cut yourself during the installation but When you go ahead and put your yeah I’m A little out of breath When you go ahead and put your uh if you Have to slide your head set one of your Cover cover plates over it That’s going to be one of your last Things after your bearing it’s going to Be an o-ring in there it’s tucked inside It’s internal you don’t want to cut that O-ring as you slide it over the sharp Edge it’s going to use a file we’re Going to take that sharp edge off And just watch your knuckles This will try and take some skin off And just be real careful when you check That sharp edge make sure that’s gone if You want extra style points we could Always remount the the interior there no Need to just the tool I have it’s like a Plumbing tool A lot of hard pressure it’s just a Curved blade here this is going to take The sharp edge off the inside I’m going to use some very hard pressure
There doesn’t only need a couple one or Two revolutions and we’re looking pretty Good So this is exactly what we’re looking For so without the spacers we have this Some people may Have want no spacers on top they’ll get Rid of that which means they have this Piece here so then they will cut this so I would make a marking here and then Measure three millimeters below this Line To get rid of this so this would be just Below our stem but in this case it’s Going to do this the same same concept Though we’re getting the same thing Notice our Gap here so got the top edge Here down to the top of the steer tube That’s approximately three mil and That’s our excess space that’s the Gap We need so when you go to make your top Screw adjustment the screw that’s coming In the top here That’s going to pull the steer tube up So this tube may come up and we need That three mil of space because it may Be reduced to two mil or 1.5 mil just to Take the play out of this headset Properly and then we lock it in place by Tightening our stem bolts so you always Need to see this in place if you’re Having issues with headset adjustment You tighten it you go for a ride it Loosens up you tighten it again it feels
Great but then after your next ride it Loosens up take that top cap off Completely have this exposed and we need That Gap here if you don’t have it you Can easily just throw a the appropriate Size spacer inside there to create that Space that you need
