Do i have a fork is...
 

[Closed] Do i have a fork issue? OEM Pike on a Spesh Enduro 29.

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I was looking at the bike wondering whether it would take an angleset or whether to use an off-set bushing at the shock end. Anyway whilst looking at the fork I noticed that the fork stancions and lowers dont seem to be in-line with the steerer. So I used a straight-line Laser to line through the center of the forks. The outcome is that when lining through the fork leg the laser line hits the front of the top-cap and not the center as expected & if i line down through the middle of the steerer the laser intersects the center of the ( offest ) axle. Is this normal?


 
Posted : 30/03/2015 5:41 pm
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Aren't all suspension forks offset at the crown as well as the dropouts?


 
Posted : 30/03/2015 5:44 pm
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That sounds bad.

Just to be clear it looks like the forks have been 'bent' backwards toward the frame?

if you drew a line thrgough the centre of the steerer you should be a bit behing the axle (looking at the pictures onlie there looks like there's very little crown offset but you should be at least the width of the drop out (to centre) behind the axle. I'd have thought.


 
Posted : 30/03/2015 5:53 pm
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its normal , most (if not all) forks are 'bent' like that as part of creating the offset of the wheel to the steering axis.

They use a combination of offset in the drop out , and offset in the crown.

edit : The offset is backwards? that doesnt sound normal.


 
Posted : 30/03/2015 5:54 pm
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Every day's aschool day. Will check that out next time I'm in the shed.

Edit: Eh, oh bloody hell it's raining and I'm going to have to go to the shed now.


 
Posted : 30/03/2015 5:58 pm
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Yes, if I draw an imaginary line through the steerer I hit the center of the axle which gives the illusion of the forks being bent backwards as if I've ridden into a wall.


 
Posted : 30/03/2015 6:06 pm
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Have you ridden into a wall?


 
Posted : 30/03/2015 6:07 pm
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Not ridden into a wall but there was a strong headwind yesterday.


 
Posted : 30/03/2015 6:33 pm
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Got a pic a bend that big should be visible.


 
Posted : 30/03/2015 7:42 pm
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I'll get one up tomorrow. ..


 
Posted : 30/03/2015 8:33 pm
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This image is taken grom the web. You can see if you follow the line of steerer down towards the axle the fork isnt on the same axis

[img] [/img]


 
Posted : 30/03/2015 8:51 pm
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I read somewhere that some manufacturers are fitting CC anglesets as standard these days. Are you sure you don't have one fitted in the steeper position?

Just a thought looking at the picture


 
Posted : 30/03/2015 9:29 pm
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Thats what it looks like. Shirley it would be advertised it as so. T'would be a bonus if it was.


 
Posted : 30/03/2015 9:36 pm
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It'd still be n the centre of your top cap though if it was due to the angleset.

Although using the highly scientific method of holding the edge of my phone up against the image above it does look possible


 
Posted : 30/03/2015 9:56 pm
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There is no angleset in an E29, because they use the 'campy style' headset, where there are no cups, the bearings just sit on the inserts in the frame.

Thus there isn't any option to run an angleset, or any other form of headset than the one it comes with.


 
Posted : 30/03/2015 10:10 pm
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This ^^^, hence why i sold my spesh carbon bikes.


 
Posted : 30/03/2015 10:18 pm
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I'm glad everything's as it should be though. As for the no angleset thing I'll just have to use an offset bushing.


 
Posted : 31/03/2015 12:25 pm
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Usually if the lowers have an offset at the axle, the steerer and the stanchions/lowers are parallel, but not necessarily on the same plane.

There are cases where the offset is implemented by having the stanchions angled in relation to the steerer:


 
Posted : 31/03/2015 2:28 pm
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Having just acquired an E29, I can't understand why you'd want to **** about with it's geo as I feel it's bang on and you'd only mess that up!


 
Posted : 31/03/2015 3:22 pm
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For the same reason I've changed the bars, stem, brakes, removed the 2 by, added a 42t One-up, changed the front tyre, changed the grips and added a bell...


 
Posted : 31/03/2015 7:55 pm
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@ otsdr. ....in the picture you've linked to you can clearly see that the steerer and fork uppers and lowers dont align. In the picture you can see that the wheel attaches directly to the bottom of the fork hense the offset to compensate. My forks have an offset axle and the fork legs are 'set back' so that the axle aligns with the steerer.


 
Posted : 31/03/2015 8:03 pm
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OP Why on earth would it be designed to have zero offset? I think you're just holding your laser squint, or get your bike checked. If you follow the steerer (and not the conical headtube) it's (of course) straight.

[img] [/img]


 
Posted : 31/03/2015 8:24 pm
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Rockplough..do the same but drawing a line up through the center of the lowers...


 
Posted : 31/03/2015 8:29 pm
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Knock yourself out.

[img] [/img]


 
Posted : 31/03/2015 8:43 pm
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Nothing wrong with that.

Combo of tapered head tube and offset built into the crown makes it look wonky. Nothing actually wonky in the pictures.


 
Posted : 31/03/2015 8:47 pm
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Just for fun, here are your two laser beams.

[img] [/img]


 
Posted : 31/03/2015 8:49 pm
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What I'm lining through is the blue line. Which goes through the centres of the Axle, and steerer tube top and bottom.


 
Posted : 01/04/2015 9:18 pm
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It may go through the steerer bottom, but not centrally. For that, look at the pic with the red line further up.

If the axle was lined up with the steerer tube you'd have fork with zero offset, and therefore loads of trail. You'd barely be able to turn the thing.

Look at how the stanchions are not aligned with the steerer. Why do you think that is? To add some offset. Then more is added by the axle being out front of the lowers.

If the steerer is genuinely aligned with the axle you need to get it checked out.


 
Posted : 01/04/2015 10:11 pm
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if you bought a specialised, then all the bits n bobs will be in some way proprietary.


 
Posted : 01/04/2015 10:13 pm