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-   -   Re spoked front wheel rubbing on fork ( https://www.xt660.com/showthread.php?t=19842)

Karrotboy 20-10-12 05:57

Re spoked front wheel rubbing on fork
 
I ordered new stainless spokes from JRT in Australia

The thai bike mechanic who i had to fit them fits spokes to all ties of bikes but mostly small bikes.Never the less he agreed to do the work without any doubt but when i picked up the bike and was driving down the street, everything felt normal until i applied the front brake and started feeling and hearing a shuddering from the front end.
After returning to the shop we could see the tyre was rubbing on the right side fork.
Long story short we had the wheel off and on , swapping the spacers around and removed the disk again and refitted but the wheel pulls against the fork when you start to tighten the bolt.

Could this be that he tensioned the wheel wrong baring in mind he works on mostly straight patterned spoked wheels or does anyone have any other ideas. He is going to start from scratch and do it again, see if that works. However JRT sent me all the questions regarding the rim sizes and bike model etc but managed to send the set for the rear wheel too short in length.

All comments welcome

Thanks lads

Pleiades 20-10-12 09:42

From my somewhat limited experience of re-building wheels (tried three times, cocked it up twice and got it spot on once!) I�d have stab in the dark that he didn�t measure the dish or offset with the original wheel off the bike before he started, especially as a lot of drum braked commuter bikes (which sound like the sort he works on) have hub/rims in line. It�s a mistake I made (and a common one apparently); that of falsely assuming that all front wheel rims sit on the centre line of the hub - some do some don�t (almost all rears have a dish to accommodate the sprocket.)

Now, I confess I don�t know about XTX wheels specifically and their dish/offset, but I�m guessing this might/could have happened? Trouble is without a true OE spoked wheel to take measurements off it�ll be difficult to find out what it should be now, unless you can find one, get the specs from Yamaha or contact a wheel builder who does know?

I found the easiest way to measure the dish is to lay the wheel (with spacers in) on a flat surface so it rests on the spacer�s end. Then measure from the rim�s edge to the flat surface it�s sitting on. Repeat for the other side. This will give you the necessary measurements before you begin, in order to check the newly built wheel has the correct dish before refitting and give you a chance to adjust it.

I guess you could measure how much your wheel needs to move over to the left to be in the centre of the space between the forks by taking the distances from the inside of the fork legs (but this might isn�t going to be all that accurate). The spokes can then be loosened and retightened to pull the rim over by that amount.

Of course all the above is guesswork and assumes he (your fitter) had the correct spokes, got the left and right ones on the correct side of the hub and has tensioned everything properly. Were/are the fork legs aligned correctly before the pinch bolts were tightened?

:smilies0944: getting it sorted!

Karrotboy 21-10-12 04:37

I reckon your right, he took a picture of the hub/wheel before but i think that was to just get the pattern right or hub the correct way round.

Thanks for you insight though I'm heading down there this morning to, so hopeful if its not done i can at least tell him what you told be and get it sorted eventually!

Thanks though you might have saved the day and thought he i lesson in spoking big bikes

I'll let you know what the outcome is:sign12:

Karrotboy 21-10-12 10:49

I went back today and all good, he had started again and got it right this time.

Thanks for you reply and advice though

Pleiades 21-10-12 13:20

Result! Glad to here you got it sorted mate.


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