SuperMax - Pulley tracking inward

[vej]

So, I had SuperMax rebuild my pulley. I just installed it on the wheel and I can’t seem to get the wheel aligned properly. If I roll my tire forward (normal direction) the belt tracks in on the front pulley, all the way in until it barely touches the transmission. I’ve measured from the swingarm pivot on both sides…. About 16 1/8”, I’ve adjusted the pulley side of the tire further back and further forward. I’ve adjusted the rotor side of the tire further back and then further forward… any way I adjust I get almost the same results!

Ideas? Suggestions? This isn’t complicated, I’m not sure what the hell I’m missing here!

Thanks!
:flag:

 

[standuprick]

Its possible your tranny isnt lined up correctly

 

[vej]

The problem with that is that the bike was 100% except for my broken belt (due to the worn out pulley). I took off the pulley, mailed it in for upgrade, got it back, installed it.... and now I have this issue I'm trying to resolve.

Normally I'd take it down to BD Tampa... but EVERYONE there is new (except for my mechanic (Travis)).... and the place isn't the same.

 

[RRRUFF]

What does your drive pulley look like in regards to wear? You can actually tweak the axle one side or the other and make the belt move. In other words it won't be perfectly aligned with the swing arm pivot bolts but the belt will track. Certianly check the axle alignment with transmission shaft alignment first though this is the most important thing. Check your sprocket bolts and that the sprocket isn't wobbling when you rotate the wheel. Also if you took the hubs apart check and be sure you have everything bolted back together correctly. The hubs are match marked to one another and to the wheel. One other thing you can try is to reverse the drive belt, sometimes that will make a difference. Just some ideas to look at, hope it helps.

 

[tommy666]

Hub alignment...

 

[erldawg]

Are the spline / pulley teeth square with the the outside of the pulley? It wouldn't take much of a slope in the splines to initiate the belt to track to one side. Just a thought.

Like Ruff said try turning the belt around and see what happens.

 

[pknowles]

Did you reinstall the pulley in the same position as when you removed it??Is it trying to climb up on either side of the realr pulley?

 

[steveo]

what about the wheel spacers did you get them back in the right place

 

[vej]

Responses for all....

OK… in order, here I go:

RRRUFF:
You can see slight wear on the drive pulley from where the belt always rode before. The rear pulley isn’t wobbling from what myself or my cousin can see or feel. The hubs were NOT taken apart, I just took off the rear wheel and then removed the pulley ONLY. I did reverse the belt to see if it would matter…. It didn’t.

Tommy666:
I didn’t do any work on the hub at all…. Notta.

Erldawg:
I thought of that…. And I hope that’s not the issue. I sent an email to supermax asking about it and they said they’ve never had that problem with any of their pulleys…. Soo?! Maybe but hopefully not.

Pknowles:
I don’t know if the same holes lined up exactly… I didn’t think to mark them… figured it should have all been balanced and I just put it back on. The belt is NOT trying to climb up on the rear pulley on either side.

Steveo:
Spacers… yep, all in correct. That was simple… 2 spacesrs on the rotor side and 1 on the pulley side. The “lipped” spacer on the inside with the lip inward.

An additional interesting note is that if I spin the tire backwards the belt starts tracking back to the outside, but never goes beyond what it should be...

 

[pknowles]

Back the tire up with the adjustment screw on the left side and keeping it on the jack, spin the wheel forward by hand and see if this helps or makes it worse.

 

[mobsta]

Belt changing position when rotating the wheel backwards is normal.Are you sure the belt didnt always ride inward on the front pulley and you just have to make a minor adjustment to get it off the trans?My bike is left hand drive but my belt dosen't ride on the center of the front pulley it is inward some.Just sayn

 

[BBChopper]

Are you 100% that the rear was true before you took it apart? My guess is it wasn’t and now it is and things aren’t aligning up. I had that happen to me when I got my chop used in 06. Everything was good for 200 miles then I got the belt squeal. Tightened and aligned the rear and the belt went all the way outside plus some. I found the dealer had the wheel out of line to make the belt center. My trans/motor was out of line. I fixed that and all was well.:2thumbs:

 

[vej]

OK... Next?

OK, so my cousin and I have adjusted and adjusted the tire... we can see the wear on the front pulley where it used to ride dead center... can't get it there now.

When i put a straight edge across the front pulley and back to the rear pulley, the rear pulley is IN about 1/4" or so, so that would be the reason for the belt tracking over (or so i would assume).

Since i did NOT take off the hub, nor did i take out the bearings, why/how is the rear pulley in so far (causing the belt to ride in)?!

Everything must have lined up properly before i sent off the pulley and had it supermaxed... so it should line up now, right!?

3 Spacers, 2 on the brake side, 1 on the pulley side, really obvious which are which.... so i don't get it. How do i get the pulley out where it should be?

 

[pknowles]

IF THE REAR PULLEY IS IN A QUARTER INCH OR SO, IT SHOULD BE RUBBING THE TIRE AS THERE ISN'T A QUARTER INCH TO SPARE. SOUNDS LIKE A SPACER IN THE WRONG PLACE. YOUR PULLEY WILL ONLY FIT IN ONE DIRECTION, RIGHT?

 

[vej]

IF THE REAR PULLEY IS IN A QUARTER INCH OR SO, IT SHOULD BE RUBBING THE TIRE AS THERE ISN'T A QUARTER INCH TO SPARE. SOUNDS LIKE A SPACER IN THE WRONG PLACE. YOUR PULLEY WILL ONLY FIT IN ONE DIRECTION, RIGHT?

Correct, pully only fits one way, and the hub actually recess' into my pulley.

However, all spacers ARE in the right place, there are only 3. I've read the manual, my cousin read it we've taken it apart, etc etc.

It doesn't rub the tire unless I "cock" the tire a little trying to get the belt to run to the outside. If I spin the tire backwards the belt will work itself all the way to the outter edge of the front pulley, but it won't go over the edge or hang off. When I spin it normally again it will go all the way in and rub the tranny. I can see exactly where it used to ride and don't get why it's doing this.

 

[pknowles]

If it ran fine before it's. Got to be in the adjustment. Look at the transmission. Mount bolts and see if it movedwhen you broke the belt.

 

[2004BC]

If you straight edged the two pulleys and the rear is 1/4" inboard then you need to align them.

 

[karata]

Knowledge Base:

The problem is with the new belt not the pulleys,I have stated before in a post about the manufacture of belts.
Belts are mfg. with the cords 3 ways:

Z Twist-----Belt will track to the Right with a CW Rotation (RSD Trans)

S Twist-----Belt will track to the LEFT with a CCW Rotation (LSD Trans)

SZ Twist----Belt will track Nuetral regardles of Rotation (LS or RS Trans)

As you can see if someone sold you the belt with a incorrect Twist you will not overcome the problem you have.

Jim Longo'
Karata

 

[X-ray Doc]

Karata,
How would you tell which kind of belt you have?

 

[pknowles]

The problem is with the new belt not the pulleys,I have stated before in a post about the manufacture of belts.
Belts are mfg. with the cords 3 ways:

Z Twist-----Belt will track to the Right with a CW Rotation (RSD Trans)

S Twist-----Belt will track to the LEFT with a CCW Rotation (LSD Trans)

SZ Twist----Belt will track Nuetral regardles of Rotation (LS or RS Trans)

As you can see if someone sold you the belt with a incorrect Twist you will not overcome the problem you have.

Jim Longo'
Karata

Damn Jim, We run into this problem all the time with steel cable, just never gave it a thought with a fiber belt. Now, I need to do some research and find out how they are made.