's Forum Archives - Cyclo-Cross

Archive Home >> Cyclo-Cross(1 2 3 )

what size single chainring census(25 posts)

what size single chainring censusbuffalosorrow
Oct 13, 2003 9:39 AM
I am running 12-23, 9 speed.
I was thinking 48 or 49. Should I drop to 46???
re: what size single chainring censusflyweight
Oct 13, 2003 11:11 AM
12-23?!? Erwin Vervecken and all the other pros run 12-27.

Most of the pros who run single rings are using a 42 or 44.

Vervecken uses a double and his big ring is only a 48 and he's a whole lot stronger than any of us will ever be. Nobody runs a 49 and most people are better off with a 46.
Oct 13, 2003 3:55 PM
Got me thinking. why, may I ask?
being that I like to run, rather than ride up steep inclines, I can't imagine ever getting in 46:27
does this mean no SS for Iron Cross???JMD
Oct 13, 2003 7:32 PM
This is Jay (the one who bought your Michelin Sprints) - does this post mean you are going geared for IronCross? I am going SS and am scared stiff after reading the email on the course today.
One more quick question for you - I know you said that you ran the Tufo's with the diamond tread to commute on -will these fit under standard dual pivot road brakes??? Thanks for the reply!
eek! scared also...buffalosorrow
Oct 14, 2003 8:47 AM
America's longest cross race
50+ miles. Apporx. 6000 Feet of climbing!
Est. couse time 4-9 HOURS!
Course designer Dr. David Albright notes, "we designed thid cours with one thing in mind, can never punish bicyle riders enough."

I'm shaking in my knees.

I am debating between a Verge series race and the 50 miler.
I guess I should flip a coin.

Re- tufo diamond and dual pivot brakes, dont know hav'nt tried it yet...sorry

Re-Q on cassettes. I am hooking up my colnago. The three races so far have proven to be a disadvantage for the SS kind, long grassy flats and slow long inclines, blast. This past weekend was not so bad I placed 12th or 13th?

Jay are you racing any of the Mac races so far? I raced with another SS'er in the B race in Revere Pa 'evo cross'
That was'nt you, was it?
Go the SSclimbo
Oct 14, 2003 12:24 PM
if I can make it to Iron Cross I'm going with a 38x20 SS CX bike, the description sounds wicked. Did you race B's also at Evo? I saw a guy all in black on a SS in that race. If any of you guys are racing at the Granogue or Wiss races I'll look out for you, who do you race for? bike? names? I race A's for Beacon but I'll be around to watch the B races. in the all black ls skinsuit...buffalosorrow
Oct 14, 2003 12:38 PM
look out for me, although sometimes I suck...
-Alexia long sleeve all black skinsuit, odd tattoos (left knee blackened and nect tats)
I ride for myself. Although I have been thinking of creating a Jonny Cash homage team. "Cash's Ashes" rest in infinate peace.

-I ride a Graham Weigh SS, orange to black fade and I have an older rabobank schemed Colnago that I am always working on, and ride it towards the end of the season.

I hit the further east Mac races, NJ series, CT, Sag Harbor NY series and some MA races, depending on the course and how I feel I enter B or C, if there is a large time gap sometimes I race both. I try not to travel more than 3 hours in one direction.

ok, cool, I saw you then...climbo
Oct 14, 2003 1:04 PM
I remember the tats, especially the left knee, I just got my first myself, tribal arm band. I'll say hi if I see you next race.
ok, cool, I saw you then...buffalosorrow
Oct 15, 2003 4:03 PM
I had a hard time in that particular race, the begining and the end, I could not spin fast enough to keep up with the geared riders, at the start. Actually I was last in the first lap, somehow I managed to pick of ten or so riders by the third lap. The other diffucult portion was the winding long grassy incline, toward the end. 36:16 did not do it.

Can you offer any harsh criticism? Seeing me ride that day..
i didn't see much of the raceclimbo
Oct 16, 2003 5:34 AM
but a 36x16 is definitely a big gear to push. I run lower so I can spin and recover. I ran a 38x18 that day and have a 38x20 ready for Granogue because there is usually a couple of steep climbs in there.
were you the other SS rider in the B race?buffalosorrow
Oct 16, 2003 12:02 PM
Were you in the B or were you riding in another cat?
I remember passing a fellow ss, silver/ ti ss? On the long incline. Was that you, I am focused (singlespeed, single-minded) while riding.
Unfortunatly my friends and I voted to see what race to attend this weekend and the CT race won, so we are heading north on saturday.

Check the Highland NJ race on bikereg. Spot brand is sponsering a singlespeed class, with prizes! Cant wait, its only a 40min drive from my place.
no, I raced A'sclimbo
Oct 16, 2003 1:21 PM
The HP race sounds great, my wife's having a baby the day before though so can't make it, it's a sucky course for SS though, very flat !
Oct 14, 2003 8:46 AM
You'd only see a 46x27 on a double ring set-up. Even then you'd try to avoid riding in it as you should never ride in your big/big or small/small gear combos. That said, when you're a mechanic working in the pits and handling a spare bike you always put the spare bike in the big/big combo. This way when the racer comes in to exchange bikes they don't have to do any double shifting to get back up to speed.

With a 42 or 44 tooth single ring a 27 is very useful on muddy but not too steep inclines. Heck, at nats last year there were riders using a 42x27 on some of the flat sections!
Pardon newbie question: Anyone ever NEED 46x12 in CX?Spunout
Oct 14, 2003 9:46 AM
Just wondering. PErhaps some courses are faster than others I guess.
Pardon newbie question: Anyone ever NEED 46x12 in CX?flyweight
Oct 14, 2003 10:22 AM
I've used it (barely) on some downhill sections. Faster/stronger guys use them sprinting for the line.
Other uses for CX bikes besides racinglaffeaux
Oct 14, 2003 10:26 AM
Not all CX bikes are dedicated racers. I use mine for road rides, trail rides, commuting, etc. And yes, I have spun out my 48-12 combo on many occassions.
Other uses for CX bikes besides racingflyweight
Oct 14, 2003 1:21 PM
I've used my CX bike for long road rides/centuries and on such occasions I'd swap out the 46 for a 52. If you're going to use a cross bike as a road bike a 48 is a pretty smart move.
wow this is going to be real flame-baitJS Haiku Shop
Oct 14, 2003 11:27 AM
...but i've used 52/11 on flat and slightly downhill sections of pave walking trail and hard-packed double track in 'cross races. i am much more comfy pushing big gears, tho. my 'crosser is setup with an ultegra triple 52/42/30, xt r.der and 11-32 cassette. i have used both 30/32 and 52/11 in the same race. and didn't throw up.
No problem. We ride WAAAY different courses....Spunout
Oct 15, 2003 4:12 AM
As a note to your course design question above, J, the point at which you shift into your 52/11 is exactly where you could place a double barrier.
re: what size single chainring censusMShaw
Oct 14, 2003 9:30 AM
I'm running a 12x26 with 34/46 rings.

I had 38/48, but found myself in the biggest cogs all the time, so I switched to smaller rings. Now I'm in the middle of the cassette again.

Most single chainring guys I've met are running 42t rings with 12/27 casettes.

Racing or riding?iml
Oct 14, 2003 10:30 AM
For racing, a 42 up front is plenty with a 25 or 27 in back...even for the very, very strong (like top 5 A guys). I never need more than my 42, as real courses never have sections long enough to wind it out beyond what that allows. I'm a huge single ring proponent, if you can handle it, as the small ring on a double is a crutch or bail-out that you don't want/need when racing. And single rings are just plain slick and clean.

For around town or commuting/training, go w/ whatever you like. But I don't even mind my 42 single ring setup for road rides and mid-week training this time of year...and I generally like to roll bigger gears on road and mountain bikes.
Racing or riding?flyweight
Oct 14, 2003 1:27 PM
I wouldn't say a double ring is a crutch. Erwin Vervecken ran a double this weekend and used both rings (he also didn't use top mount levers). Gully on the other hand ran a 42x12/27 single set-up. Sven Niis usually runs a 44x12/27 single set-up.

I think the whole sing/double debate comes down to personal taste. My new Kona will be a single ring bike. I prefer the simplicity and do pretty well running with the bike so having to get off earlier on the hills isn't a problem for me.
Oct 14, 2003 2:55 PM
Perhaps "crutch" wasn't the best description. Vervecken can run a double - and he uses/needs no crutch. But even on that course, with all the mud and slow grass, I was fine with a 42 single. Had I the option of dropping into a 38, I might have...even though I didn't "need" it. I do wish I'd had a 27 instead of the 25...

There is something nice about not having the option...when my brain shuts down it's easier to just keep pedaling hard, rather than worry about shifting on the front.
Oct 14, 2003 3:56 PM
"when my brain shuts down it's easier to just keep pedaling hard, rather than worry about shifting on the front."

That's why I usually race on my singlespeed! Just the thing when the brain is starved of oxygen!
42/12 is nearly same as 53/15...them's good gears to go! nmSpunout
Oct 15, 2003 4:17 AM