Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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Originally Posted by mo.mashi
I've started by looking at garage sales to see if I can find some little jewls. I've been finding lots of 10 speed racers. Does anyone know how possible it would be to add one additional sprocket to the front and the back to turn the racer into an 18 speeder?
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If the bikes you are finding are truly 10-speed, i.e. 5 speed freewheels and two chainrings, they are very old and will require a lot of work to modernize.
You will have to spread the rear triangle to allow any modern 6-speed or greater wheel to fit and will need a new triple crank and bottom bracket and possibly a new front derailleur.
If the bike has 27" wheels, fitting 700c may or may not be feasible depending on whether the brake pads will adjust downward the needed 4 mm to line up properly.
I recommend you start with something a lot more modern. What you spend in higher initial cost will be more than made up for in component cost savings.