What fixed Gearing do you use ?

[skupp]

I have 46x16 on 700C wheels, not sure what that equates to in inches... Might have to try a higher(?) gear, as on downhills and straights I seem to be pedalling like a banshee...

 

[Joe24]

77.625 if i am right?
You think thats bad downhill, dont ride 65

 

[skupp]

cool, thanks for that, still very new to this sort of thing... So at a guess, 77inches is a good middle of the road gear? 80+ better for straights/downhill, 70 or less better for the steep bits?

BTW, for fellow newbies, to calculate gear inches (Chainring/Sprocket)*26.4
- Thanks to Frustruck on another thread

Cheers!
Daniel.

 

[Greenbank]

I have 46x16 on 700C wheels

It also depends on the size of the tyre you have. The bigger the tyre the further you travel (slightly) for one revolution of the wheel.

46x16 on 700c * 20mm tyres is 75.2"
46x16 on 700c * 38mm tyres is 78.5"

Multiplying chainring/sprocket ratio by 26.4 will give you the gear inch for a 26mm 700c tyre.

 

[GrahamG]

I really struggled up the Bristol hills in 68" earlier this week, so back to 64 1/2" until I'm less of a fat bastard and my ankle is back to fully fit.

 

[Mr Phoebus]

Always rode 78" but for the last 7 months I've dropped to 68".
One drawback is that I now sweat like a pig through being more animated.

 

[piedwagtail91]

63.5 or 47x20. just about right for the climbs around the ribble valley Yorkshire dales.

 

[BentMikey]

66" here, 48x19. That's good for at least 38mph down Leaves Green hill, and even my recumbent only manages 46mph or so there, so that's plenty fast enough.

Any clown can brute force a massive gear, spinning is a whole different thing. I'm still trying to get anywhere near FWN, quite some learning to do.

 

[rootes]

I have ended up with 48x18 as that what the bike came with.... seems ok around woking area.. 70"

top gear on my 2 speed brommie is 72"

 

[Origamist]

66" here, 48x19. That's good for at least 38mph down Leaves Green hill, and even my recumbent only manages 46mph or so there, so that's plenty fast enough.

Any clown can brute force a massive gear, spinning is a whole different thing. I'm still trying to get anywhere near FWN, quite some learning to do.

A seasoned and skilled cyclist can twiddle and push a big gear - the two are not mutually exclusive.

 

[Greenbank]

66" here, 48x19. That's good for at least 38mph down Leaves Green hill, and even my recumbent only manages 46mph or so there, so that's plenty fast enough.

Any clown can brute force a massive gear, spinning is a whole different thing. I'm still trying to get anywhere near FWN, quite some learning to do.

I'd say you're almost there. 38mph on 66" is a very respectable 191rpm.

 

[BentMikey]

AFAIK 185rpm, it's probably not quite 66" given the tyre or something. I wish it was 191!

 

[MessenJah]

I use this

 

[Greenbank]

http://www.aukweb.net/pix/picsolo.php?Pic=5

 

[TheDoctor]

Ermm, 39/18 for 58.5 of your Earth inches.

It's fine for pootling about York, and I can spin it fast enough to drop a standard Arch, should I choose to (and be prepared for the consequences)!