7 speed to 8 speed upgrade...

[e0richt]

I have a low end road bike which is a 14 speed. It has a Shimano 2200 derailer
and currentyly uses a 7 speed cassette with a spacer...
the shifters are 7 speed indexed stem shifters.

if I wanted to upgrade to using an 8 speed cassette

could I use the stem shifters in "friction mode"?
or would I need to go to a bar end shifter?

would I have to change out the derailer?

 

[gclark8]

Use 2200 STI Shifter/Levers with and 8 speed HG50 12-25 cassette, the 2200 derailleurs are 8 speed.

2200
EST2200DPAX ST-2200 STI SHIFTER SET 2200 8-SPEED DOUBLE
EST2200TPAX ST-2200 STI SHIFTER SET 2200 8-SPEED TRIPLE

Some of the 2200 Group: http://www.shimano.com.au/catalog/c...<>ast_id=1408474395181400&bmUID=1187807890389