Time for a change.
Join Date: Jan 2004
Location: 6 miles inland from the coast of Sussex, in the South East of England
Bikes: Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
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Originally Posted by warriorsdad
I have an older specialized sirrus it has shimano 105 cranks now I never thought it could be the frame though there no rubbing going on just when I pedal hard up hill or stand up to pedal it feels like the cranks are weak. But I could be mistaken.
105 cranks will not flex unless you have very strong legs- the cranks/ bottom bracket are loose or you have a cracked frame.
To change from double to triple will be a new set of cranks along with the bottom bracket- probably a new front derailler and may require new shifters.
Check the bike out and unless you need lower gears- I would not bother changing. And if you do require lower gears- then changing the rear cassette or chainrings is a far cheaper alternative.
How long was I in the army? Five foot seven.