Single speed gear ratios, what do you find works best

PB Forum :: Dirt Jumping & Street
Single speed gear ratios, what do you find works best
Author Message
flag tombarton
Posted: May 14, 2012 at 4:49 Quote
Which is the easier gearing out of 32:16 and 34:16?
flag tom666
Posted: May 14, 2012 at 5:24 Quote
tombarton wrote:
Which is the easier gearing out of 32:16 and 34:16?

32-16.
flag roblucas87
Posted: Apr 10, 2013 at 2:35 Quote
currently building a Norco torrent with 38:16 Big Grin
just need to build my wheel set for my specialized
enduro so I can take the wheels off it and put it on the
torrent and put the newly built wheelset on my
enduro
flag Benji1982
Posted: Apr 10, 2013 at 3:46 Quote
25/9 or 28/14 on 24" Smile
flag cmc4130
Posted: Apr 21, 2013 at 23:16 Quote
Benji1982 wrote:
25/9 or 28/14 on 24" Smile

25/9 is common for 20" wheels.

28/12 would be similar for 24" wheels ...
flag Gazeddy
Posted: Apr 30, 2013 at 3:35 Quote
im 36/13 was 36/14 but had 32/12 much prefer 36/13
flag dxb1
Posted: May 6, 2013 at 14:56 Quote
Benji1982 wrote:
25/9 or 28/14 on 24" Smile

Neither- go 25/11 dude it is sweet!!!
flag LavenderGooms
Posted: May 6, 2013 at 21:25 Quote
Funny story, when I first got my NS rotary hub, it came with a 10t cog and all I had for a ring was a 30t so I ran 30-10 on a 26 for about a month.... It was nuts.
Im on 25-10 now and its still pretty hard.
flag suspended-flesh
Posted: May 16, 2014 at 14:41 Quote
Uh I just realized this is in the DJ thread. Sorry and nevermind, I'm talking about a street speedster.
flag Woolfy21
Posted: May 21, 2014 at 6:01 Quote
can anyone help me out please, can someone tell me the best ratio for a dj bike which is used for dirt jumping and a large chunk of downhill or slopestyle trails. Ive got no interest in trying to pedal up i just wanna be able to pick up speed quick on flat and going down and not run out of gear, i dont mind pedalling abit harder than most, but i just dont want the gear to run out too quick. oh yeah wheel size is a 26"

Cheers!!
flag scrippsranchDJ
Posted: May 21, 2014 at 7:36 Quote
Just buy a sprocket with one or two more teeth if you dont have enough speed.
flag Woolfy21
Posted: May 21, 2014 at 7:56 Quote
what on the front or rear?
flag cmc4130
Posted: May 22, 2014 at 17:04 Quote
Woolfy21 wrote:
can anyone help me out please, can someone tell me the best ratio for a dj bike which is used for dirt jumping and a large chunk of downhill or slopestyle trails. Ive got no interest in trying to pedal up i just wanna be able to pick up speed quick on flat and going down and not run out of gear, i dont mind pedalling abit harder than most, but i just dont want the gear to run out too quick. oh yeah wheel size is a 26"

Cheers!!

For what you're looking for (more top end speed while mostly riding downhill) I would say a gear inch number in the mid 60's.Note that this would be stouter than the typical/ standard bmx/DJ 55 gear inches. Although.... when you say "pick up speed fast" that works better with a 55-ish gear ratio.

Unsecure image, only https images allowed: http://i1239.photobucket.com/albums/ff509/austinmtbbmxalliance/Gear_Ratio_Chart.jpg
flag cmc4130
Posted: May 22, 2014 at 17:11 Quote
Dethklok wrote:
I run 25/10 on my bmx, 18/13 on my 24" trials


Going to try out 25/12 on a street/DJ 26" build...have a feeling its going to be too light tho

Is your BMX 24" wheels? Cuz 25/10 with 20" wheels is too light. 25/9 or 28/10 is more "normal."

 


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