I am looking for some advice for 29er SS.

What gear sizes are people using ?

I have seen 34-18. Any others ? I used 32-17 on a
26″ bike once.

Thanks.

32:18

The end

try 34:18 and see – you can always swap to a 19 or 17 if you need to.

(I run 32:17 on my 26″ SS due to having weedy knees and crap lungs).

Or read this thread from a week ago: http://singletrackworld.com/forum/topic/ss-ratios-on-29er

32:18 is about the same as 32:16 on 26″ (arround 52″ gear)

I use 32:20, but probably should go up to 32:19 to keep the fitness gains coming rather than getting lazy.

32:18 is good for my legs around the Chilterns. I tend to drop to a 19 on the back for bikepacking trips and really big days with lots of hills.

34:18 here and getting up things I didn’t think I would.

33:18

IMAG0335 by pten2106, on Flickr

32:20 but only riden a couple of times think will change to 32:18/19 when fitness allows.
Lovin it so far

32:19

Singular Swift by rOcKeTdOgUk, on Flickr

I see 32:18 seems to be the most common.

Something in my head though says bigger wheel (29) requires
bigger front chainring ie. 34.?

I see 32:18 seems to be the most common.

Something in my head though says bigger wheel (29) requires
bigger front chainring ie. 34.?

Then you will need a bigger rear cog.

32 : 20 for me. Just right for towing a 2 up loaded kiddie trailer around the peak.

4.1m, or 50×28 if you insist on using the more complicated method.
http://singletrackworld.com/forum/topic/why-does-no-one-use-gear-inches-or-metres-development