emjhay

hi, been trying to figure this out, i googled as much as i can but could not get a straight answer. basically i have a cervelo dual that i want to convert to road bike, the only affordable shifter i can get is a shimano 105 5700. yes i can sell the cervelo to get a road bike but i really want to convert this and since i got the bike already its a great way for me to learn how to do it. my question is again can i use a shimano 105 5700 shifters to my 9 speed cassette. if adjusting the limit screws and adjusting the derailleur is the answer that would be great.

alcjphil

105 5700 is a 10 speed shifter. You cannot "adjust" it to work on a 9 speed cassette no matter what you do

emjhay

thank you, yes the shifter is a 10 speed. i thought you can adjust the limit screws to make it work.

emjhay

will any 9 speed shifter works though ?

CliffordK

https://en.wikibooks.org/wiki/Bicycl...ing_Dimensions

The problem is the spacing between the cassette sprockets is different (3.95 vs 4.35).

I have found derailleurs to be somewhat forgiving for shifting, so it may somewhat work, but not optimal.

The easiest thing, however, is to simply buy a 10-speed cassette + 10-speed chain. It should be fine on your freehub.

Your 10-speed shifters should work with most 9-speed derailleurs, as well as 105 & Ultegra 10-speed derailleurs (not 4700 Tiagra 10 speed)

hydrocarbon

Just buy a 10-speed chain and cassette, dude.

NextDIYikeproj

and rear derailleur!?

hydrocarbon

NextDIYikeproj
No need; a 9-speed Shimano road derailleur works fine with a 10-speed cassette; they have the same pull ratio so all you need to do is adjust the limit screws and the B-gap. (The exception to this is the Tiagra 4700 and RX400 derailleurs, which use a different pull ratio for some reason.)

CliffordK

I missed the question. Yes, 9 speed Shimano compatible shifters should work with 9 speed Shimano compatible derailleurs and cassettes.

shelbyfv

Have you looked at Microshift or Sora? A used shifter can be a pig in a poke.

alcjphil

The overall width of a 9 speed cassette is within 1 mm of the width of a 10 speed cassette(actually the 10 speed cassette is narrower), so limit screws won't do anything. Think about it: 8,9,and10 speed cassettes all fit on the same freehub

70sSanO

The cheapest route is to try an alternate cable routing at the rear derailleur. I've never tried the 10 speed shifters with 9 speed cassette, but I've done the old Dura Ace mix-n-match.

In simplistic terms, it is a 10% rule. If the shifter pulls 10% less than it needs the alternate cable routing makes up the difference; 10 speed shifters pull 2.3mm of cable, 9 speed shifters pull 2.5mm of cable The Hubbub routing takes about 5% off. If you understand that all you are doing is moving the lever attach point to pivot point you can fine tune it a bit by positioning the derailleur washer tab.

At any rate here is a link...
https://www.sheldonbrown.com/dura-ace.html

John

himespau 

Isn't there a j-tek shiftmate that'll work? Or is there a Shimergo setup that'd work?

KCT1986

Another option is use a pre-9 speed Dura Ace RD-740x series. See the attached chart, last row second column.

The RD-740x will move more per shift than other 9 speed RDs and match the 9 cassette spacing almost perfectly.

philbob57

The 10 speed derailleur, as stated above will work with the 9 speed cassette, as CliffordK and hydrocarbon said above. If by 'shfter' you mean 'shift lever', you'll need to go the alternate cable routing, old Dura-Ace, or proper shifter lever route. I'm running a 10-speed der on my 7 speed freewheel with 7 speed SIS shifters without any problems - same pull ratio, so the 7 speed shift lever pulls the right amount of cable for the 7 speed freewheel. A 10 speed shift lever probably would not pull the right amount of cable for a 9 speed cassette.

emjhay

yes i do mean the shift lever, i think i'll pass on the 105 shift lever and try to get a 9 speed ultegra, or sora to make the conversion easier on me. currently right now its hard to get a used for a reasonable price. i think im gonna go get the sensah 9 speed shift lever. has anyone have any experience on those?

70sSanO

If you are able to find affordable Ultegra 6500 STI’s in excellent condition, you are better than most people on this planet.

You can get Sora R3000, but I think you’ll need a new FD due to a change in cable pull. I’m not certain if the change ended with Tiagra doubles or trickled down to Sora R3000. I’m sure someone here knows.

John

emjhay

Can anyone confirm the front derailleur is compatible? I saw a set at a reasonable price for the Shimano ST-3500 STI.

70sSanO

You need to be aware that Sora ST-3500 shifters are older than Sora ST-R3000. The 3500 shifters have an external shift cable routing, whereas the R3000 shift cable routing is internal; runs under the bar tape.

There is nothing wrong with external routing. Some think it is a better routing, but some don’t like the old 90’s look.

I believe Sora 3500 is compatible with the older Shimano road front derailleurs that have a shorter cable pull. I think it is the R3000 that has more cable pull.

John

CliffordK

I've never been particularly happy with my Ultegra and Dura Ace 9s shifters. And things like cover plates are almost impossible to source.

I'd buy new Sora/Tiagra/105 before going with the Ultegra/Dura Ace 9s.

=====================================================

As far as front derailleurs, unfortunately they aren't as well documented as the rear derailleurs. I would avoid many of the MTB parts when upgrading to brifters.

I haven't seen those before.

One of the issues with the lower end Shimano shifters is they route the cable out the side, so you have cables all over the place.

It looks like the Sensah may have aero routing like the newer Shimano shifters, as well as the Campy shifters.

They may well be worth a try.

No guarantees, of course.

KCT1986

The ST-3500 front shifter is for double rings and should work with older shorter pull compatible FDs. If you have a Shimano 9 speed FD road such as the FD-6500, the ST-3500 should be fine for shifting a double crankset. This doesn't take into account any change that you may make to the tooth count of the chainrings, just the cable pull issue.

If you go to the newer Sora R30xx series, note that the double shifter (FD-R3000) works with the newer cable pull. Interestingly, the FD-R3030 (triple) seems to still use the older cable pull.

So, ST-3500 on a double, very likely..
ST-R3000 on a double, no.

emjhay

thank you for all the input. I will update all of you once i do find something available at a reasonable price in my area (ontario).

emjhay

im in a potential deal with a 9 speed 105 shifter , can these be compatible with the ultegra 9 speed i currently have?

CliffordK

It should be fine. I like the Ultegra derailleurs.

emjhay

thanks for the input! im trying to minimized my expense therefore im hunting for a 9 speed shifter that could work with my bike.