Tiagra cassette with 105?

[awfulquiet]

Hi all!

I'm looking at a KTM Strada 2000, equiped with a Shimano 105 10 speed Triple (5703) 50-39-30 and 105 derailleur.

Does anyone know if I can change the 105 Cassette (11-28 ) for a Tiagra 10 speed 12-30 cassette ? Any issues with rear derailleur?

Thanks!

 

[400bhp]

Is the 105 rear derailleur one of the long caged ones (i know the tiagra triple mech is a long cage but unsure of there is a 105 equivalent)? If so, then you should be fine.

 

[PaulSecteur]

On my secteur tripple with 105 (5600) I tried the 12-30 cassette and there was a slight contact between the upper jockey wheel and the 30 tooth tiagra cassette. That was with the original 2010 RD-5600 rear mech.

I changed it to the later 105 (rd 5701 medium cage as its on a tripple) and that works fine.

So, have a look on the back of the parrellel motion on your rear mech, if it has RD-5701 I would guess it will work, and I suspect this is what you have.

If you have a RD-5700 I would guess it wont work, but you might be luck and have a hanger that is longer than normal, and a bit of B-screw jiggery pokery might see you right.

 

[awfulquiet]

Thanks guys. KTM's site doesn't mention which 105 rear derailleur it is and the photo on the site shows the compact, not the triple.

So, order it and see I guess!

 

[PpPete]

Thanks guys. KTM's site doesn't mention which 105 rear derailleur it is and the photo on the site shows the compact, not the triple.

So, order it and see I guess!

Definitely
My 6600 copes with 12-30 OK and it's same nominal limits (11-27) as the 5600

 

[PaulSecteur]

So, order it and see I guess!

As you have 5703 Im guessing you have the current one and you should be ok.

Incidentally, I was worried the 12-30 would have noticable gaps between the gears and thought I would only use it for known hilly rides. In reality, I doubt I would notice the difference in that respect between the 27 tooth cassette... Except for going uphill! Im not a climber but having the 30 gives me a chance of getting up most things I come across.

Still wont get me up Mow Cop though

 

[awfulquiet]

I don't have the bike yet, will order it from the LBS on Tuesday

I too struggle on the hills (and I'm surrounded by the buggers...)

Cheers all!

Awfers

 

[MisterStan]

Any plans for the 105 cassette??

 

[awfulquiet]

Heh, unfortunately, as the groupset will be new, the LBS is swapping it out and keeping the 105 cassette..