whats your CX race gearing?
I’ve done a bit, yes 😀Posted 4 years ago
44/12 is over 100″ with a cross tub on. 36/46 might be popular but I dare say that’s because a lot of bikes/cx-specific chainsets come with it as standard. 36 is too small for most and a 46 is too big – when did you last use top gear in a race? And if you don’t use it, why have it? On a cross bike with its longer chainstays, with a smaller ring like a 42 or 44 you get a reasonable chainline even as far as the 24t on a 12-27 cassette. So you can start on the 44/24 and just ping up the block as you sprint off, rather than bogging down in too big a gear or trying a chainring shift halfway down the start straight.
Hey Tricky, I wasn’t attacking you. It was the way you said that you NEED a 46 to race cross for the flatter sections, wether or not you know who anyone is, is irrelevant. Everyones needs are different but the OP asked what is YOUR cx gearing for racing.
LS has been racing cross for a long time and is keen as anyone I know and very competitive, he uses a 44 outer, I use a 42t most of the time (as do the past 3 National champions for that matter) You may prefer a 46.Posted 4 years ago
I’m thinking of going 1×10 this year.
to help combat mud educed mechanicals.
was thinking 39/12-28
with double bash guard as apposed to a chain catcher. I’m thinking a bb area with no mech one less place for mud to build up.
struggling to find a 39t bash guard
my other bike is used for commuting too. I need to replace the drive train soon so I might go: 36/44 – 11-28Posted 4 years agotaxi25Member
Most races around here the leaders will lap half the field twice ! So what gearing they have is irrelevant to me anyway. I like a 34/46 with a 13/28 out back. The lower gear keeps me spinning and helps get me up some stuff without dismounting. Thats what works for me, but there’s no magic bullet.Posted 4 years ago
After racing on Wednesday night i think i’m inclined to agree with a few on here and go 1×10
I didn’t move into the big ring once nithe whole race ( 😳 ) (although i put my tub wheels on yesterday and dropped a kilo off the weight!)
So maybe a 42 up front with an 11-32 out back would be better
i’d then have a lower bottom gear
42×32 – 2.6 /35.4″
42×11 – 7.6 /103.1″
Compared to now
36×25 – 2.9 / 38.9″
So who races on 1×10 and is completely happy?Posted 4 years agopixelmixMember
I’m currently running 1×10 (39t front for muddy Scottish races, 11-32 at the rear) – rare that I spin out in a race, only when commuting on the road.
I find the chainline less than awesome though, and I’m considering going to 2×10 with 11-27 or whatever out the back.
How common is a front mech failure, and has anyone else found that the wide chain angles on 1×10 can be a bit of a pain? I wonder if this is contributing to my rather rapid chain wear and iffy shifting.Posted 4 years ago
36/42 with 11-28.
Never ever needed a 46.
but with a 1×10 set up you won’t need a 36/46
Currently your bottom gear
36×28 – 34.7″
With a 1×10 it would be
42×32 – 35.4″ which isn’t a huge difference
42×11 – 103.1″
This is why i’m thinking it’s less hassle/weight tighter chain going 1×10 and you still have a good range of gears for racingPosted 4 years agojonbaMember
46:34 and 11:28 on the back.
I race in the 34 and use the 46 for getting to races and riding old railway lines and bike paths.
Won one league, 4th in another and normally place top 10. I prefer to sit and spin rather than stand and mash though.Suits me but not others. I’d probably run a 38 up front and a mtb cassette out the back if I was going 1×10.Posted 4 years agoSamMember
38-18 for SS duties, I think the geared bike is 38-46 and 12-27. I almost never use the big ring in actual cross races, but as it’s a bike which sees a bit of road and general riding use as well it’s nice to have it on there. I’m thinking of setting up a single ring disc equipped geared bike for this season.Posted 4 years agojohn_lMember
Ran a Kite 39/19 last season & had best results yet – down to improved fitness & a lovely bike more than the gearing though.
Now using 1×9 – same 39t but with a 12-28 cassette & a Paul’s keeper. Campag Centaur & 105. Hoping that the lower gear options will help with v muddy & lumpy courses, can’t imagine that 39/12 is going to be a real limiter!Posted 4 years ago
I raced on a 34/46 last year always in the 34. not sure a gear this low is a bad habit I need to get out of though.
will try either
or 39 single (39t bash guard is the smallest I can find)
I think a chain catcher will trap as much mud as a front mech will (making the 1×10 setup pointless)Posted 4 years agodoboMember
I raced 1×8 in a 39t with 11-28, i felt it was pretty tough going on some of the wet draggy hills so geared down to 38t 11-28 and find that a good mix. I currently got the 39t back on through summer though.
sram pg850 8 speeds are great and you can pick em up for £20
Im not exactly troubling the fast riders though.
ive been in races praying for a lower gear but never a higher one!
also i dont have scientific proof to back it up but i think spinning with lower gears can maintain a better speed than grinding big gears at a lower cadencePosted 4 years ago
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