10 spd dyna sys shadow RD on 9 spd cassette & shifters?

[DubbelBuys]

Will this Work?

 

10 speed dyna sys shadow RD on 9 speed cassette & 9 speed shifters?

 

All is shimao.

 

Thanx in advance.

[walkerr]

If your shifters are indexed, I would guess not - you might be able adjust it to shift across 9 of the gears, but unless the lever has a 10th index, it won't be able to shift to the lowest/highest.

 

You also might have chain width issues - I think 10spd chains are generally narrower than 9spd, which could then be an issue on your FD.

 

Edit - oops, sorry, misread - you're keeping the 9spd cassette just changing the RD unit. Hmm, in which case I'm not sure, sounds more possible, not sure if the RD cogs might expect a narrower chain. I'd guess the RD unit itself won't mind using a smaller travel than it would normally have on 10spd.

Edited March 6, 2012 by walkerr

[Thomo]

I came across this the other day:

 

http://forums.mtbr.com/drivetrain-shifters-derailleurs-cranks/dyna-sys-10-speed-compatability-9-speed-shimano-systems-646014.html

 

Dyna Sys 10 speed compatability with 9 speed (Shimano systems)

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I just set up a ten speed system on my bike using a mix of 9 speed and 10 speed parts. Since there is a lot of confusing and contradictory information about Shimano dyna sys 10 speed, I thought I would post up some compatability issues I have found.

 

1. Road 10 speed derailleurs and shifters are completely incompatible with mountain (dyna sys) 10 speed derailleurs and shifters. The cable pull by the shifters is different for both front and rear. 2. Nine speed rear derailleurs will not work with 10 speed mountain rear shifters. They will however work with road “flat bar” 10 speed rear shifters. Dyna speed shifters pull twice as much cable per shift as 9 speed shifters, so if you use a 9 speed derailleur it shifts two gears for every one push.

3. Dyna sys 10 speed rear derailleurs cannot be used with 9 speed shifters. Road 10 speed derailleurs can be used with 9 speed shifters.

4. Nine speed front derailleurs can be used with 10 speed front shifters, but do not work optimally if used with a 10 speed crankset. Nine speed front derailleurs and cranksets can be used with 10 speed chains and front shifters. A nine speed shifter can be used to shift a 10 speed dyna sys front derailleur. 5. 10 speed road chains are different from 10 speed mountain (dyna sys) chains. The dyna sys chain is a directional chain that is made to shift better with 10 speed mountain drivetrains.

6. 10 speed road cassettes and 10 speed mountain cassette use the same sprocket spacing.

Edited March 6, 2012 by Thomo

[walkerr]

I came across this the other day:

 

http://forums.mtbr.c...ems-646014.html

 

Dyna Sys 10 speed compatability with 9 speed (Shimano systems)

--------------------------------------------------------------------------------

I just set up a ten speed system on my bike using a mix of 9 speed and 10 speed parts. Since there is a lot of confusing and contradictory information about Shimano dyna sys 10 speed, I thought I would post up some compatability issues I have found.

 

Wow! ... what he said

 

Wealth of info there, that's going straight in my "might need this some day" file.

[DubbelBuys]

Thanx for the link & replies.

 

I also read that, but was wondering about it as the speed railleur will only do 90% of it's work & is controlled by the shifter, but it could be that it won't work as stated by MTBR link.