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CrazyMotorcycleGuy
Most users ever online was 4,519, September 2, 2015 at 03:26 AM.
Go Back   DCSportbikes.net > Sportbike Operation > Test and Tune

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  (#1)
Knee Draggin!
 
Modian's Avatar
 
Posts: 576
Join Date: September 30, 2002
Location: Manassas
March 31, 2004, 12:48 PM

How can you tell if your front wheel is out of alignment? Or if your forks have a slight twist?

I switched to a 70 series front and had to raise my forks to compensate. Now I have a slight issue where my bike wants to go right at higher speeds. It's only really noticeable above 50. Whatever it is, it's very slight. But it's enough for me to notice by the fact that my bike is slightly leaning left and my right clip-on is closer to me than my left. So how can you tell which wheel is out of alignment? And how would I check and fix my front if it is that one?

-Mod

PS: I should of made the switch to a 70 long ago. The bike feels much more planted, absorbs bumps better and just falls over into corners thanks to the new profile. I thought I'd have to move my fender, but amazingly it fit.
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  (#2)
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Join Date: October 1, 2002
Location: Boston, MA area
March 31, 2004, 01:12 PM

I know that I saw a trick on the web somewhere using string to check the alignment of a rear wheel, but can't seem to find it. Here is a site that has a lot of information about aligning forks on a BMW that may be helpful.

http://w6rec.com/duane/bmw/fork/title.html

And a couple other more basic ones:

http://www.vfrworld.com/tech/forks.html

http://www.yamahafz1oa.com/quadrunne...lignment.shtml

No personal experience, but thought these might give you some ideas.

Good luck.
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March 31, 2004, 01:16 PM

Found this, which may help. Not exactly what I remember about the string technique but it is similar:
Attached Files
File Type: doc wheels.doc (36.0 KB, 1 views)
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  (#4)
Knee Draggin!
 
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March 31, 2004, 01:34 PM

I saw the string technique but it seemed limited to the rear. I wanted to see if there was another way. And none explained how to make sure the forks were straight. Thanks tho, I'll look at those links.

It is possible that it's my rear out of alignment since my hash marks meant squat and I just adjusted my chain, but I want to know for sure.

-Mod
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March 31, 2004, 01:35 PM

and this:

http://www.yamahafz1oa.com/sportryde...ntmethod.shtml
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  (#6)
Knee Draggin!
 
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March 31, 2004, 01:37 PM

Quote:
Originally Posted by rddy
Ha, I looked at that exact page before I posted.

-Mod
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March 31, 2004, 01:39 PM

Quote:
Originally Posted by Modian
Quote:
Originally Posted by rddy
Ha, I looked at that exact page before I posted.

-Mod
Yeah, that one won't help you much with the front, but the others might. Good luck!
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  (#8)
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March 31, 2004, 02:22 PM

Take your front wheel off.
Loosen the top and bottom triple clamps.
Install the axle. Tighten the triples.
You can easily measure if your forks are off then.
Plus installing the axle while the triple's are loose will make the forks line up.
It's easy for me to do but tough to explain here.
Bring it by and I'll give you a hand if you want.


Steve
2015 Yamaha R1
2011 Harley Electra Glide Limited
2009 Yamaha Zuma 125
2006 Honda CRF150F
2004 Honda CRF150F Monster
2003 Honda CRF 150F Mini-monster
www.cornerspeed.net
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  (#9)
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March 31, 2004, 02:53 PM

It might be your clip-ons that are a little off.

Also, I'd probably still move your fender cause with tire flex and all...well it looked real close.
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  (#10)
Knee Draggin!
 
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March 31, 2004, 03:15 PM

It's not the clip-ons, I know what that feels like. I made sure they were lined up when I tightened em back down. They were out of sync the first time we put them on and I didn't get that fixed till last week.

I guess I'll get some string and rule out the rear before I concentrate on the front.

-Mod
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  (#11)
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April 1, 2004, 11:04 AM

Quote:
Originally Posted by Modian
I guess I'll get some string and rule out the rear before I concentrate on the front.
-Mod
Excellent idea as it's the easiest to do. It's pretty easy to eyeball it as you rotate the rear wheel and watch the sprocket and chain to see if there is any lateral movement.
Let me know if you need a hand...


Steve
2015 Yamaha R1
2011 Harley Electra Glide Limited
2009 Yamaha Zuma 125
2006 Honda CRF150F
2004 Honda CRF150F Monster
2003 Honda CRF 150F Mini-monster
www.cornerspeed.net
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  (#12)
Knee Draggin!
 
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April 4, 2004, 01:09 AM

Looks like it was a combination of the front and rear, mostly rear I think. Though the way the rear was pointed and the way it was behaving doesn't make sense to me. With Grendel's help, I got it all straight. Fixing it made me realize I need to raise the forks another milli or two however. I feel like I have an entirely new bike.

I'd also like to comment that while having the clip-ons mounted below the triple is great for riding, it's murder on my back in rush hour. Turning your bike into a track bike isn't real good when you don't have another bike for commuting.

-Mod
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  (#13)
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Join Date: September 27, 2002
Location: Leesburg, VA
April 6, 2004, 01:22 PM

Your right Modian, its a pain and scary at times depending on how tight your suspension is set.

Make sure you re-adjust your suspension for regular road riding, i.e. Pot Holes, Uneven surfaces and what not.

You can really get in trouble when you find your suspension is too tight at full lean over some bumpy pavement.


Ride your ride and be safe this season.
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  (#14)
Knee Draggin!
 
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April 7, 2004, 03:32 PM

ce qui? ¿qué? was? che cosa?

Are you in the right thread? My suspension is set up perfectly.

-Mod
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April 7, 2004, 03:43 PM

Is his the same bike you had problems with before with the marks on the swing-arm being off resulting in poor rear wheel alignment. Or do you just have bad luck?
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