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DIY hanger alignment tool

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#21 ·
... But what for the thru axle folks ?

I guess it's even easier then. Simply get an old solid rear axle (or M10x1 threaded rod) and thread into your hanger. Then with the wheel off, put in your rear axle and just make both axle parallel.
 
#23 ·
David C said:
... But what for the thru axle folks ?

I guess it's even easier then. Simply get an old solid rear axle (or M10x1 threaded rod) and thread into your hanger. Then with the wheel off, put in your rear axle and just make both axle parallel.
Click to expand...
Another great idea! :thumbsup: That's 3 new ways I picked up from this thread on straightening the derailleur hanger. Sorry, forum won't let me positive rep you anymore.
 
#24 ·
this is my solution. its not a tool but a work around.


I used a sturdy 12 inch steel straight rule and a C clamp.

Clamped the ruler on a flat spot on the derailleur hanger.

Align the ruler with the cogs looking at the bike from the rear to the front. Align the vertical plane with the ruler at 9 o'clock and also the horizontal plane with the ruler at 12 o'clock).

Purely eye balling it, it took about 5 adjustments bending the hanger with a crescent wrench. And she was good to go.
 
#26 ·
The DAG 2 is awesome. What I've found is that you're more likely to cure some bad shifting by aligning the derr rather than wasting time twisting the cable adjustment. The derr is far more likely to go wonky than you are to get significant cable stretch.
 
#27 ·
Found a 10M x 1.0 bolt at my local hardware store, a couple of collars, nylon washers, 20-1/4 threaded rod and nuts, and aluminum tubular square stock. Cost is about $15, and should work as a decent alignment tool. I'll post a picture when its assembled. I really like to buy tools, but considering i have one bike, investing $70 bucks for a tool which is used infrequently doesn't make sense since.
 
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