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Bent wheel? Forks? Frame? Axle? Help Please!

  • Thread starter Thread starter CUEagle17
  • Start date Start date
C

CUEagle17

Guest
Hey everyone,


I unfortunately wrecked the other day and thought all would be good except for cosmetics. I bent my crash bar, left handle bar a bit, light, gauge cluster, and left turn signal. I think I was going around 30, and would be surprised if it was faster. I posted some pictures of my problem. It may be hard to see but I will explain the best I can. Something in the front end is bent. I tried to look at the frame and I do not think that is the issue. The forks actually look pretty good, but compared to the wheel something is off. Also, when pushing the bike the brakes are squeaking at certain points against the rotor. I really hope these pictures help. Can any please help me diagnosis this issue?. Ill post more pics in posts.

Thank you,
GS750.jpg
 
More pictures of the issue!
 

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Wheel/discs out of true is easy to determine, just whip the calipers off get someone to sit on the back'v the bike and spin the wheel, you will see any deviation instantly. I see what you mean by the forks, that is easy too, while you are at it just slacken the triple tree bolts top and bottom and try to rotate the fork tubes if they rotate all is good, if it gets stuck and and you need to remove the wheel and the slider moves around in a circle then new tube time, likely slackening all the bolts off and retighten will let it all spring back and it will come straight.
 
Thanks, tatu. When I get a chance I will check what you have suggested. If I take the calipers off and notice the wheels/rotors are untrue what is the fix or remedy?
 
If its a mag wheel then just replace, if its a spoked wheel then its possible to straighten the rim by adjusting the nuts on the spokes. It's possible to get mag wheels and discs straightened but its a specialist job and is successful.

Is the fender mount bolt hole broken on the bottom slider?
 
It's hard for me to see what's wrong in the pics.. but
hopefully the wheel/forks are just "tweaked" or TWISTED.
sight across both forks and see if they are parallel. It takes very little for the forks and the trees to be misaligned, even with the pinch bolts tight, and the upper triple tree nut tight. a light fall will twist them. If this is the problem, your handlebars will also be pointing off , as compared to the front wheel.!!
I place the front wheel against my favorite tree and slap it against it in the direction you want it to move. it will be apparent that it takes very little effort to move them all back into position.
 
Yes, the fender mount is broken on the bottom slider. It was broken when I purchased the bike. With that being noted, it could be possible the untrue alignment may have been there prior to my wreck, but I am not sure. I do know the calipers were not catching against the rotors and it was smoother when pushed. Is a wreck at 30 mph fast enough to cause that untrue alignment?
 
barnbiketom said:
It's hard for me to see what's wrong in the pics.. but
hopefully the wheel/forks are just "tweaked" or TWISTED.
sight across both forks and see if they are parallel. It takes very little for the forks and the trees to be misaligned, even with the pinch bolts tight, and the upper triple tree nut tight. a light fall will twist them. If this is the problem, your handlebars will also be pointing off , as compared to the front wheel.!!
I place the front wheel against my favorite tree and slap it against it in the direction you want it to move. it will be apparent that it takes very little effort to move them all back into position.
Click to expand...

barnbiketom,

I took these earlier, it is hard to tell but I think they are fairly close. But they could have tweaked a bit.
 
Earlier this summer, I started rebuilding my bike from its wreck three years ago.

I knew for a fact that the forks were bent, and had some new tubes ready to install. Once I had new springs and seals in the tubes, I installed them in the triples. Well, I tried to insall them. I was totally surprised to see that they were not parallel. The second tube was so far off-parallel that it would not even go into the upper triple. Even loosening the stem to allow the triples to re-align with each other did not help.

Finally came to the conclusion that the lower triple was bent. That might have happened in your case, too.

By the way, my bike was also wrecked in the 25-30 mph speed range, so yeah, there is enough force to bend things.

.
 
Hopefully there is a GSR member or two near you with a much better front end including the rotors.
Vmass comes to mind. ;) Look for his posting in the sale section.
 
I have a wheel and rotors if that is the problem. I'm only about 2.5 hours away. PM me if you are interested. I have no use for them.
 
Update! From everyone's advice I decided to try and figure out what the issue is. First I took the calipers off and spun the heck out of the wheel! The wheel being in a different direction is what notified me that something was wrong. But after spinning the wheel I noticed the wheel was not bent and is spun on the axle well. Thus, the issue I think lies within the forks or triple tree. I proceeded to disassemble the font end. first I inspected the axle. The axle look pretty good but i thought it may be off just a fraction of a hair (But it is not off enough to move the wheel that far out of line. The forks move within the triple tree separately pretty well (of course) but with that noted i think the left one is at a larger angle that the right pushing the wheel out of line. Now what I do not know is whether its the triple tree or forks. I will say that reassembling the front end did help line it back up, but still not perfect.
 
I had a similar problem with my bike after an accident. Shop installed new forks, fender, front wheel and upper fork clamp and something was still wrong. Here is how we found it, pull the whole front end down, triple trees, upper clamp everything off the bike, leave the brakes alone, just wire them up out of the way on the bike. Reassemble everything off of the bike (yes including the fender) everything BUT the wheel. You only need to tighten all the bolts just a bit. If the axle will not align through the fork holes, then it is your lower fork tree that is twisted. Once we installed a new lower tree, all was good in the world again.
 
thanks, mrbill5491! I feel like your description of what you replaced to arrive at the issue is pretty close to mine. With the season coming to a close it sounds like I have a winter project! Season seems to becoming to a close and I am not sure when I will be back on the road (after taking off the calipers and hoses I ran into some issues). Its unfortunate but I am new to working on bikes. I will start a new thread with my issues. Thank you all for your help!
 
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