Raked triple trees?

[Drew]

not if you are a rough cunt.

I think we both know that I am. But I expect the clamps would snap if you tried to pinch the fork with any note worthy degree of angle.

[nodrog:Me]

I think we both know that I am. But I expect the clamps would snap if you tried to pinch the fork with any note worthy degree of angle.

Dont the spacers go on the stem?

[Kickaha]

however but it's still a lot better to either make clamps with a different offset or as has been mentioned use adjustable head races.

Knock me some up for the Bucket then

[Drew]

Dont the spacers go on the stem?

Didn't look at the picture that well. If that's the case, that system only adjusts the steering angle. Not what these dudes are on about.

[Mental Trousers]

Yeah they're for choppers and Harleys, but they illustrate what's going on.

On a race bike often the back end will be jacked up way above the standard setting, thereby reducing the trail on the front wheel. So adjusting the rake to slightly steeper than the steering head angle gives you more trail, offsetting that lost from jacking the arse up.

Fully adjustable triple clamps are something I've lusted over since I started racing.

Now thats the adjustable ones. Picture will explain what many words wont.

Pretty crappy and look like for old bikes.Just saw bottom of page Choppers!

Roadracing the forks are made steeper than the steering head rake.

Will have to do a drawing maybe

[nodrog:Me]

Didn't look at the picture that well. If that's the case, that system only adjusts the steering angle. Not what these dudes are on about.

If the top of the stem stayed in the same place and the bottom of it moved forward, is that not raked out?

Fucked if I know whats happening.

[bogan]

If the top of the stem stayed in the same place and the bottom of it moved forward, is that not raked out?

Fucked if I know whats happening.

Yeh it would be, but I'm pretty sure Robert Taylor's intuition would have him turn up at your garage and smack you upside the head if you tried tightening it up with mismatched offset plates

[Mental Trousers]

That's different. Adjusting the top and bottom of the stem means the forks are still parallel. Whereas different offsets on the triple clamps the forks are at a different angle to the steering head.

Changing the steering head angle changes the wheel base of the bike. Changing the offset of the triples allows you to keep the same wheel base if done correctly.

If the top of the stem stayed in the same place and the bottom of it moved forward, is that not raked out?

Fucked if I know whats happening.

[Drew]

If the top of the stem stayed in the same place and the bottom of it moved forward, is that not raked out?

Fucked if I know whats happening.

Trying to adjust the fork angle, independant of the head stock angle. So as to change the trail to a different degree, relative to steering postion.

I think. I'm not that bright.

[bogan]

Trying to adjust the fork angle, independant of the head stock angle. So as to change the trail to a different degree, relative to steering postion.

I think. I'm not that bright.

It's more to do with suspension action I think. Cos with a raked tree, it's still pivoting around the headstock angle, same as with a parralel tree with modified offest. But then as the suspension moves, it's not parrallel to the steering angle, so the effective fork offset changes based on suspension position.

I think. I'm not a racer.

[Drew]

It's more to do with suspension action I think. Cos with a raked tree, it's still pivoting around the headstock angle, same as with a parralel tree with modified offest. But then as the suspension moves, it's not parrallel to the steering angle, so the effective fork offset changes based on suspension position.

I think. I'm not a racer.

I don't see the gain, but that doesn't mean it's not there.

[bogan]

I don't see the gain, but that doesn't mean it's not there.

Neither. Front swingarm sounds like a way better solution...

[Drew]

Neither. Front swingarm sounds like a way better solution...

Never ridden anything with one, but I'm told there is next to no feel.

[bogan]

Never ridden anything with one, but I'm told there is next to no feel.

Bloody useless riders, always nitpicking at sound engineering solutions

[Ocean1]

That's different. Adjusting the top and bottom of the stem means the forks are still parallel. Whereas different offsets on the triple clamps the forks are at a different angle to the steering head.

Changing the steering head angle changes the wheel base of the bike. Changing the offset of the triples allows you to keep the same wheel base if done correctly.

Buell changed the XB12X for the last model. They'd always had piss poor steering lock, so they made new clamps with the forks an inch further forward, to get more clearance from that big fuckoff headstock. They also moved the axle back 1" in the fork endcap. Same rake, same trail, more steering angle.

Split spherical clamp inserts have been around for engineering applications for ages, they'd work just fine with an eccentric sleeve in the fork clamps to change fork angle.

Edit: I'm not convinced that the offset and head angle required to get the correct trail just happens to be the optimum angle for the forks to work at. It's certainly easier to manufacture bikes that way but I wonder how close the resulting fork angle is to the angle that results in the least side, (fwd/aft) load, IE: pointing directly at the compression forces.