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post #51 of 73 (permalink) Old 10-15-2015, 9:52 PM
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Re: Fork Alignment: Rocking the Forks

I still kind of wonder how you can set the front height while rocking the forks, do you tighten everything below the top triple and then slide the tubes down a bit?

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post #52 of 73 (permalink) Old 10-15-2015, 10:32 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

Tighten everything gradually in increments, rechecking as you go.

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post #53 of 73 (permalink) Old 2-7-2016, 7:06 PM
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Re: Fork Alignment: Rocking the Forks

I'm a bit late, but any reason why a 3" piece of metal/glass? Wouldn't a 1" wide ruler work or something along those lines? I only ask because i dont know what kind of person has a 3x9" piece of scrap glass/metal lying around. I surely don't.
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post #54 of 73 (permalink) Old 2-7-2016, 8:48 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

No, the purpose of the width it to cancel out minor error by exposing them to a greater distance. Or if two lines are only slightly off parallel the further you extend those lines the greater the error. And the easier to detect it.

Go to a granit shop and beg a piece of scrap from a counter cut. The shop near me has tons they'd love you to help them dispose of

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post #55 of 73 (permalink) Old 2-9-2016, 12:44 PM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by FOG
Bent handle bar.

FOG
I saw you posted this earlier in the thread. I grabbed some granite and did the test and the granite barely rocked at all and my left handlebar is slightly more forward than the right. The fork tubes slide and turn fine without budging
Is there any way to be sure it is my handlebars before shelling out the money for new ones?
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post #56 of 73 (permalink) Old 2-9-2016, 1:22 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

The reason you "Rock The Forks" Is to prevent Bump steer. OR if your forks are twisted you front wheel will turn when they are compressed.

Read what you do to adjust them in the How too piece The look at your bars is you still can tell you need to strip the controls and grips then remove them from the stanchions the roll them on a flat surface to see if they wobble.

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post #57 of 73 (permalink) Old 2-9-2016, 2:02 PM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by FOG
The reason you "Rock The Forks" Is to prevent Bump steer. OR if your forks are twisted you front wheel will turn when they are compressed.

Read what you do to adjust them in the How too piece The look at your bars is you still can tell you need to strip the controls and grips then remove them from the stanchions the roll them on a flat surface to see if they wobble.

FOG
I took the bars off the bike and the risers and rolled them. They are dead straight. no problems there.

Are u saying to go back and redo the rocking and adjusting?

Are my forks definitely straight since I can twist them smoothly in the triple trees or should I look at removing the forks and having them checked out for straightness?
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post #58 of 73 (permalink) Old 2-9-2016, 3:05 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

On the forks being straight.
Straight means parallel I was just explaining why you care,
If they are not. Parallel the wheel will turn as the forks compress, not a lot but enough to disturb your corner line.

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post #59 of 73 (permalink) Old 2-9-2016, 4:19 PM
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Re: Fork Alignment: Rocking the Forks

Jay, don't spend money on new handlebars if one is only a little off. Just put the bent one in a vise and bend it back. A little heat will help.

John Z.

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post #60 of 73 (permalink) Old 2-13-2016, 11:57 PM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by John Z
Jay, don't spend money on new handlebars if one is only a little off. Just put the bent one in a vise and bend it back. A little heat will help.

John Z.
That CAN be done but it is not a generally recommended practice.

And Jayrock..... I noticed you said the granite didn't hardly rock at all.... which in my mind translates to...
It did rock some.
The point of rocking is so you can adjust the forks so there is no rocking.

Recheck and adjust until there is no rocking... then look at your bars again.
If they are still off... either replace the one that's annoying you or if it's super minimal just leave it be.

O_E_M
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post #61 of 73 (permalink) Old 2-27-2016, 6:23 PM
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Re: Fork Alignment: Rocking the Forks

Okay so I got the forks aligned umtil the plate stopped rocking but the handlebars are now not aligned with the wheel. Is this an indication that something is bent? Maybe the lower or upper tree?
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post #62 of 73 (permalink) Old 2-27-2016, 9:36 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

If you did not do the rocking procedure everything could be bent.
First determine if the tubes are straight by twisting the in the triples the if you can not rock the tubes it is because the triples are bent.
The procedure was designed to check the whole front end.

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post #63 of 73 (permalink) Old 2-27-2016, 10:43 PM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by Jayrock205
Okay so I got the forks aligned without rocking but the handlebars are now not aligned with the wheel. Is this an indication that something is bent? Maybe the lower or upper tree?
You need to go back to post #1 on page #1... re-read it and perform the steps accordingly.

Once you have loosened the forks and turned the chrome tubes in the fork bridges to determine they aren't bent, the next step is to try and rock the forks to get them in perfect alignment with each other.

If you cannot get the plate to not rock no matter how you tweak things... then you know that either your upper, lower, or both fork bridge(s) is/are bent.

O_E_M
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post #64 of 73 (permalink) Old 2-28-2016, 11:18 AM
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Re: Fork Alignment: Rocking the Forks

Okay I think you guys misunderstood what I said. I meant I DID do the rocking procedure and got the forks aligned to the point where the plate is not rocking anymore meaning the forks are in alignment. BUT, when the plate doesn't rock anymore, the handlebars are not aligned with the front wheel. I can get the handlebars aligned with the front wheel but when I do the plate will rock back and forth on the forks meaning they are not aligned.


And yes when I twist the fork tubes in the triples, they spin freely and smooth with no binding.
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post #65 of 73 (permalink) Old 2-28-2016, 1:09 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

OK we need a little history, any reason to think your lower triple clamp could be bent? Crash? . They do bend rather easy . and can be straightened easily as well. The fork may be Parallel at some point but must be off at another point.
Now you need to take off the lower tree and clamp the stem in a vise then tighten both tube in the clamps then you can easily see the bend then a torch and by hand you can bend the tree back straight using the tubes for leverage Rock them for a final check.

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post #66 of 73 (permalink) Old 2-28-2016, 3:35 PM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by FOG
OK we need a little history, any reason to think your lower triple clamp could be bent? Crash? . They do bend rather easy . and can be straightened easily as well. The fork may be Parallel at some point but must be off at another point.
Now you need to take off the lower tree and clamp the stem in a vise then tighten both tube in the clamps then you can easily see the bend then a torch and by hand you can bend the tree back straight using the tubes for leverage Rock them for a final check.

FOG
Oh I am just guessing when I say maybe the tree is bent. I don't have any experience with this sort of problem.

Bike is a 2005 with only 1600 miles on it. Ive had it for about a month now. It does not appear to have any crash damage. Only thing I noted when I bought the bike was that all the triple tree clamp bolts were loosened for some reason. Idk what the previous owner did to it to have them all loose.


I think I may have to do what you suggested FOG. I'll take the front end apart within the next week or so and see what I find.
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post #67 of 73 (permalink) Old 2-29-2016, 1:36 AM
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Re: Fork Alignment: Rocking the Forks

Just because the bike only has 1600 miles and didn't appear to have any damage doesn't mean it wasn't in some kind of bump up.
Being new enough and with such low mileage it's entire possible something happened (dropped, hit something) and it was damaged... and some shop took some insurance money to "fix" it.
But they may have not done it correctly.

I'm just taking a guess with that theory though.
You know something is off a little bit somewhere, the clamp bolts were loose, but you noticed no obvious damage...
And when you say loose... couldn't have been too loose I wouldn't think, otherwise the forks would've slid up.

Like FOG said, pull your upper and lower bridges out, clap the steering stem in a vise, slide the forks in, place the upper bridge on, rock the forks while slowly snugging everything up.... then see what you've got.

O_E_M

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post #68 of 73 (permalink) Old 3-12-2016, 9:50 PM
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Re: Fork Alignment: Rocking the Forks

Ok i dont mean to steal the sunshine from what this thread is all about but i feel like sharing my experiences here might help someone else who encounters that they cant rock the forks and align their front end.


So i finally took the front end apart. I want to make note that i have done a bearing job once years ago on a honda nighthawk 750. I thought all head bearings were made as a single unit and not individual bearings. I was pretty surprised when tiny individual ball bearings started dropping out of the steering column.

Anyway, I got it apart. Rolled the front forks on a flat desk and didnt notice any warpage or rounding. They rolled flat.


I laid the bottom triple tree/steering stem on couple of different flat surfaces and this is what i found.








As can be seen, the left(as viewed in the pictures) clamp seems slightly bent outwards when I try to lay them flat on the counter. I tried this on different work surfaces to account for variations in surface flatness and I cant get the thing to lay flat. It kind of makes sense for the left one(as viewed in pics) or really right side on the bike to be tweaked like this. That's perhaps why the bars want to track closer to my right side and the left handlebar is farther away.


Not 100% sure what I should do now. I know it was recommended to try heat and bend it back in place on a vice with the fork tubes, but im thinking i might end up damaging my fork tubes if i fudge that up. May just buy another one on fleabay. If i do that route, i just want to know, are the 1st and 2nd gen lower triple trees the same?
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post #69 of 73 (permalink) Old 3-12-2016, 10:37 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

That lower will bend like a willow in a windstorm clamp the stem in a strong vise an fit the tubes first straighten the best side as parallel to the stem shank. Then the other tube to allow the fitting of the top triple.Then rock the tubes to straighten any twist,

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post #70 of 73 (permalink) Old 3-13-2016, 12:31 AM
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Re: Fork Alignment: Rocking the Forks

Quote:
Originally Posted by FOG
That lower will bend like a willow in a windstorm clamp the stem in a strong vise an fit the tubes first straighten the best side as parallel to the stem shank. Then the other tube to allow the fitting of the top triple.Then rock the tubes to straighten any twist,
FOG, shouldnt the flat plate be rocking on the forks now before I have started to straighten the lower tree? When I lay the flat piece on the forks now, it stays flat. This means the forks are aligned and the top and lower tree are aligned too right?

This is strange because I figured that twist on the one side would cause that fork to point farther back than the other, but they seem to be parallel still.

I also tried laying the fork stanchions on a flat desk with the lower triple tree attached to see if the fork would rock back and forth on the desk. They appeared perfectly straight....

I'm starting to get confused as to what the problem is...
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post #71 of 73 (permalink) Old 3-13-2016, 12:50 PM
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Re: Fork Alignment: Rocking the Forks

#1: The balls in the bearing should NOT have come out seperately.
Plan one getting new ones. Get a set from All Balls.

#2: No, the forks on the Gen 2 are 1mm larger than the Gen 1... So you can't use Gen 1 stuff here.

#3: Your lower fork bridge is bent.
Clamp the stem in a vise.
Put the correct tube in the left side (right side of pic) and make sure it's as close to parallel to the stem as possible.
Then install the other tube and bend the lower bridge until that tube is as close to parallel to the stem as possible.
All the while checking the fit of the upper fork bridge.

The purpose is to have the fork tubes in line left to right and front to back with the stem.

O_E_M
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post #72 of 73 (permalink) Old 3-13-2016, 12:50 PM Thread Starter
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Re: Fork Alignment: Rocking the Forks

The rocking only considerers one plane. The fork may be off in the other plane. This is why you fit the upper plate first .

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post #73 of 73 (permalink) Old 3-13-2016, 5:56 PM
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Re: Fork Alignment: Rocking the Forks




Here i am at my base's auto hobby shop and I realized that I was in over my head. I had them clamped by I couldnt get that triple to budge an inch and i was afraid I'd just end up screwing up my forks. I didnt want to try heating it because honestly ive never tried that before and I didnt want to learn today. So i think I may just fork over the 20 bucks for a used one http://www.ebay.com/itm/2003-Kawasak...lUh6d4&vxp=mtr





Also I am wondering something. The proper orientation of the forks is A in the picture right? Completely straight from bottom to top?

When you said another plane might be unaligned FOG, did you mean that perhaps my current forks are more like B in the picture?
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