Which derailleur

[jayonabike]

If I'm running 50/34 at the front with 11-28 cassette do i need Ultegra SS or GS?

Thanks

Jay

 

[ianrauk]

Om my Van Nich I run the SS with a 28

 

[jayonabike]

Cheers Ian, I thought as much, just wanted to ask here first.

 

[User6179]

Cheers Ian, I thought as much, just wanted to ask here first.

GS is what you want .
http://bicycles.stackexchange.com/questions/7264/how-to-calculate-the-capacity-of-a-rear-derailleur

 

[jayonabike]

Surely thats for a Double ( i.e 53), I'm running compact. GS is for Triple? Thats how I read it.

For Shimano:

SS - Short Cage Road Double - Maximum Cassette Cog is 27 and Total Capacity is 29

GS - Medium Cage MTB/Road Triple - Maximum Cassette Cog is 34(MTB)/27(Road) and Total Capacity is 33(MTB)/37(Road)

 

[User6179]

Surely thats for a Double ( i.e 53), I'm running compact. GS is for Triple? Thats how I read it.

For Shimano:

SS - Short Cage Road Double - Maximum Cassette Cog is 27 and Total Capacity is 29

GS - Medium Cage MTB/Road Triple - Maximum Cassette Cog is 34(MTB)/27(Road) and Total Capacity is 33(MTB)/37(Road)

your total capacity is 33, 50/34 = 16 and 11/28 = 17 , added together is 33 = GS

 

[User6179]

total capacity is 29 on SS

 

[young Ed]

best derailer is no derailer single speed is what i mean!
Cheers Ed

 

[jayonabike]

cheers ed, about as useful as a chocolate kettle

 

[User6179]

btw the 105 mech is half the price of Ultegra and looks the same , just bought a new one to replace my Ultegra mech.

 

[ianrauk]

your total capacity is 33, 50/34 = 16 and 11/28 = 17 , added together is 33 = GS

SS works perfectly fine for his (and mine) set up.

 

[young Ed]

cheers ed, about as useful as a chocolate kettle

Don't listen to me I just talk a load of old nuts and bolts!
Cheers Ed

 

[smokeysmoo]

btw the 105 mech is half the price of Ultegra and looks the same , just bought a new one to replace my Ultegra mech.

105 is basically last generation Ultegra anyway thanks to the trickle down effect, nowt wrong at all with it, good choice

 

[User6179]

SS works perfectly fine for his (and mine) set up.

Think it would do as long as you don't cross the chain , small to small on one of my bikes that's past the capacity the figure 8 goes that far back the chain rubs together.

 

[ianrauk]

Think it would do as long as you don't cross the chain , small to small on one of my bikes that's past the capacity the figure 8 goes that far back the chain rubs together.

Nope, it works perfectly fine. 4000 miles has told me so.