[Sandscycle]

So..I just finished building up a Cannondale 1fg that I got. I replaced the chainring from a 32 to a 36 thinking it would make me a little faster....I was wrong. Currently I'm running 36/17 and its topping out at 13-14mph. Just wondering what everyone is running on the road. I would like to go a little faster than that. I think right now it is set up good for mountain trail riding. Thoughts?

[offrdmania]

What BCD chainring are you running? On my old 104 BCD I was running a 32/14 for trail riding but now with my 130 BCD im running 39/17 since 39T is the smallest chainring for a 130. Both are the same ratio. I commute so I look for an easy ride instead of speed. There are ratio calculators online to help you find your right ratio depending on what you are looking for.

[Merlincustom]

Plug in your numbers:

http://www.bikecalc.com/speed_at_cadence

for fixed on the road depending on season and elevation I run 49/19, 18, or 16.

[Sandscycle]

Sweet link....was pretty close to what I noticed on the bike. FYI I run a 104 bcd. It's a gossamer v drive crankset

[NateInAZ]

Typically for commuting I run 42/15. Both of the cranksets I use on my single speeds are 144 BCD. I run Suginos from the 80s and a Miche crankset. For faster rides ill usually run my bike 49/15 or 49/16. I did a single speed tour and ran 42/18. It all depends on what you're doing the most. I'd say to try to start out around 70-75 gear inches for beginners.

[erk]

Originally Posted by Sandscycle

So..I just finished building up a Cannondale 1fg that I got. I replaced the chainring from a 32 to a 36 thinking it would make me a little faster....I was wrong. Currently I'm running 36/17 and its topping out at 13-14mph. Just wondering what everyone is running on the road. I would like to go a little faster than that. I think right now it is set up good for mountain trail riding. Thoughts?

I run a 48/16. On flat I do 15- 20 easly.

[Industry_Hack]

Originally Posted by erk

I run a 48/16. On flat I do 15- 20 easly.

Mashing is rough on the knees.

[syrgrad91]

Both of my single-speed conversions are running 42/16, the big difference between the two bikes is that I'm running 27's on the Centurion and 700's on the Peugeot. I haven't measured the crank lengths, so I'm not sure if there is any difference there as well. Not sure what speed I'm doing though, never really paid too much attention to my cadence to calculate it. The gearing seems okay, although I may swap to a larger chainring on the Centurion (maybe a 48T) as I seem to ride that one a bit more aggressively than the Peugeot, and feel like I'm running out of top speed on it.