M750 FRONT WHEEL WILL NOT SIT STRAIGHT

FATTIRE · July 28, 2014, 03:54:34 PM

Fellas, I have posted on here a few times already and have been helped out immensely with some of the issues I have been encountering. It would seem that once I fix a problem, a new one develops.

So I have a M750 and installed a 900ss front wheel. I replaced the entire front end of myM750 as it was wrecked. I just got finished mounting it on the wheel. I do not want to tighten down the two clamp bolts on the right side of the bike as I am waiting for the big to sit properly and bring in that little gap. Right now with the handle bars straight, my front wheel cants slightly at about 3 degrees to the right. What would be causing this?

I have tried moving the wheel forwards and backwards to no avail. I have pushed down on the handlebars to press the forks. I am just out of ideas. Your help would be much appreciated.

ducpainter · July 28, 2014, 03:56:24 PM

Are the axle and bearing sizes compatible?

FATTIRE · July 28, 2014, 04:00:59 PM

I was able to switch out my wheel bearing on my M750 Wheel and install in the 900ss. My front axel is the same and all fits properly.

Speeddog · July 28, 2014, 04:06:23 PM

Quote from: FATTIRE on July 28, 2014, 03:54:34 PM
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I replaced the entire front end of myM750 as it was wrecked.

~~~SNIP~~~

Exactly which parts did you replace?

FATTIRE · July 28, 2014, 04:10:19 PM

I replaced my bent forks, shattered wheel, and speedometer drive. All other parts such as wheel bearings, and axel I was able to switch over to new wheel.

Speeddog · July 28, 2014, 05:29:28 PM

Most likely the triple clamps are bent, pretty common when forks get bent and/or wheel bent/broken.

Did you have any trouble at all sliding the fork legs into the triples?

xcaptainxbloodx · July 29, 2014, 10:07:37 AM

you shattered a front wheel and didnt replace the front axle?

FATTIRE · July 29, 2014, 03:11:13 PM

It was not hard at all to slide the tubes through the triple clamps. All was very easy. As far as the axle, it is a solid piece of steel and has no bed to it at all. No need to replace as it is not damaged as I rolled it on a flat surface.

In any case, today, I am going to align my forks again. Perhaps I tightened up the fork clamps bolts to much or there is to much tension some place.

Ddan · July 29, 2014, 03:53:50 PM

Are you sure you have the same amount of fork leg below the triples?

xcaptainxbloodx · July 29, 2014, 04:49:07 PM

assuming your forks are aligned properly, and that your triples are straight (cast triples useually snap rather than bend)

the only thing it could be is the front axle/bearings. as those are the largest determining factor in how a wheel lays when bolted in, and are the only items re-used after the wreck, I Am pretty skeptical that they are not the problem.

I mean, even if the forks weren't even, or the triples were bent, a true axle would either physically not fit or would correct measurement errors.

also, as a general rule you, never re-use wheel bearings when swapping from good wheel to good wheel, let alone ones that have seen an apparently catastrophic impact. the things are like 20$, why risk it?

FATTIRE · July 30, 2014, 05:22:15 PM

Well after taking everything apart, I found out that it was the lower triple tree. It had a slight bend in it just enough to throw it all out of waco. Now I am just trying to tighten up that front wheel. As soon as I fix a problem, another one exists. As soon as I tighten down the axel to 60ft lbs of torque, The wheel does not want to spin freely anymore. I don't have the clamp bolts tightened either. is that the incorrect torque spec as that is what I read. Your though would be awesome.

Speeddog · July 30, 2014, 06:13:56 PM

If the lower triple is bent, then it's not prudent to spend time on any of the other stuff until you replace it with a straight one.

FATTIRE · July 31, 2014, 02:05:14 PM

I made that last positing because I have already replaced the lower triple. When i bough my replacement forks, they came with it. It was just easier for me to replace the tubes than the upper and lower. After I found that it was my lower triple that was bent, I replaced it yesterday. Now, the front wheel sits straight. The only problem I have now is when I torque down the front axel, the front wheel does not want to move with out me forcing it. Any thoughts? The torque spec I used was 60 ft lbs.

DarkMonster620 · July 31, 2014, 04:54:48 PM

how much torque to the pinch screws? is about 10Nm

brad black · July 31, 2014, 07:27:55 PM

speedo drive interference or not siting correctly? there's not too many ways to get that problem.

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M750 FRONT WHEEL WILL NOT SIT STRAIGHT