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DA-7900 RD limit screw

Posted: Mon Mar 12, 2012 7:20 pm
by PoorCyclist
Just thought this was a little strange.

I opened a new in box RD-7900, bolted it on, no cable yet.

the High limit screw came about half way backed out from the factory. and it is sitting below the 4th cog. I had to back out a few more turns to get it to sit on the smallest cog. The hanger is not bent.

Is this quite normal? On SRAM I could only get to 2nd cog with the screw turned in. My guess is Shimano thinks if my shifter or cable broke, I can select probably any gear to ride home.

Re: DA-7900 RD limit screw

Posted: Mon Mar 12, 2012 7:40 pm
by Bigger Gear
More range means the rear derailleur can accomodate a variety of dropout thicknesses, but presumably SRAM has enough and Shimano's is overkill.

Maybe it is for juniors and cadets so they can block out the big gears easily?

Re: DA-7900 RD limit screw

Posted: Mon Mar 12, 2012 7:40 pm
by Weenie

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Re: DA-7900 RD limit screw

Posted: Mon Mar 12, 2012 8:09 pm
by thisisatest
typically, shimano derailleurs arrive out of the box with the limit screws set about two gears in- 3rd hardest and 3rd easiest. so yours is within reason.