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anyone know?
will a 26t ring with a 34t sprocket at the back give me a similar ration to 22/32?
yes 🙂
It's easy to work out.
1/2" pitch chain so the circumference of a 36T chainring is 36 x 1/2" = 18"
diameter = circumference/ pi = approx 5.7" = 14.6cm
In reality, it'll be a little bigger because the circumference is the diameter where the chain's pins sit so maybe add another 5mm - eg it'll be around 15cm
and for the ratios:
22/32 = 0.69 (lower is an easier gear)
26/34 = 0.76 which is approx 10% higher/harder
I'm looing at the same thing 🙂 FWIW, I'll be going with a 24t granny ring (24/34 = 0.71 eg nearly the same as 22/32)
does that make a 32t 12.95 (+5mm?)
Yep, sounds right. The size of a chainring is a linear relationship with the number of teeth eg a 32t chainring will have a diameter of 32/36th of a 36t one.
thats handy to know - cheers
will go 24/36 up front if my bash-guard is big enough
[i]22/32 = 0.69 (lower is an easier gear)
26/34 = 0.76 which is approx 10% higher/harder[/i]
Fail.
32/22 = 1.455
34/26 = 1.308
The 34/26 is the 10% lower gear.
Double fail!
You've got confused.
He's asking about 22t granny ring with a 32t cassette sprocket and 26t granny with a 34t cassette sprocket
So there 😉
Aha!
I read the title ok and then read the post wrong.
Doh! Apologies - only single fail then, just me 😉