Cyclocross Bikes - SS / Fixed

Refers to it here http://www.cyclocrossworld.com/Tech.cfm?Action=Edit&MenuKey=3&theKey=44&ShowDisabled=0

"The UCI limit on tire width is 35 mm"

Guess they no what they are on about?

I assumed the idea is to keep cycloX bikes close to there roadie cousins. If you allow fat tyres, disc brakes, and wider bars, the border with 29er's becomes pretty vague.*

(*based on zero real facts, and yes I realise assume make an ass out of u and me)

Know, I don't think they do.

I still think they may do

http://www.uci.ch/Modules/BUILTIN/getObject.asp?MenuId=MTkzNg&ObjTypeCode=FILE&type=FILE&id=NDkyNTc&LangId=1

Wheels of the bicycle may vary in diameter between 70 cm maximum and 55 cm minimum, including the tyre. For the cyclo-cross bicycle the width of the tyre shall not exceed 35 mm and it may not incorporate any form of spike or stud

I still think they may do

http://www.uci.ch/Modules/BUILTIN/getObject.asp?MenuId=MTkzNg&ObjTypeCode=FILE&type=FILE&id=NDkyNTc&LangId=1

Wheels of the bicycle may vary in diameter between 70 cm maximum and 55 cm minimum, including the tyre. For the cyclo-cross bicycle the ***width ***of the tyre shall not exceed 35 mm and it may not incorporate any form of spike or stud

aha.
I have a set of 32mm cycloX tyres which dont fit under my full mudguards (very tall). Meaning I need to remove them each time I fancey a blast on the trails. Alway found this a tad weird, as my 35mm commuters fit with a fair amount of clearance.

Fixie Inc PureBlood now has a Single Speed spec and price.

Complete singlespeed bike spec:- £1735

Mosquito handbuilt wheels - Surly hubs/Salsa Delgado Cross rims/DT spokes
Truvativ Omnium track c/set
Avid BB7 disc calipers. Cane Creek brake levers
Cane Creek headset.
Thomson stem and seatpost, Cinelli Graphis XL bar.

Are there any CX frames that stand out as being particularly roomy in the tyre department? I know that the Surly Cross Check goes up to 700 x 45 still with mudguard clearance, is that about the limit?

singular peregrine?

thanks, but 700x37 with mudguards, and unfortunately disc only (though I understand why the frame warrants discs, I'd rather stick with V's at the moment if possible)

i have a peregrine and i run 43c with mudgaurds + spacers + room to spare

edit: i might have a 47 on the front and 43 on the back come to think of it...

Are there any CX frames that stand out as being particularly roomy in the tyre department? I know that the Surly Cross Check goes up to 700 x 45 still with mudguard clearance, is that about the limit?

Any more than that and your defo in 29er territory.
Not many v-brake models around these days though.
Just chuck some drops on a karate monkey.
http://www.tredz.co.uk/.Surly-Karate-Monkey-29er-MTB-Frame_31717.htm

I've thought about a KM, but the unused braze-ons will bug me. I've basically got an idea of the perfect bike in my head, and am looking to combine 2 or 3 of my current bikes into one tri-purpose build that can switch between wheelsets for different purposes (commuting in shit weather, mtb'ing a few weekends a year, noddy low level CX in winter). But looking around it seems that what I want is too out of line with commercial interests to get anything OTP unfortunately.

This (in terms of the concept) is the closest I've found to what I want, but without going custom I'm clearly going to have to compromise...

On paper a pompino would be ideal, but max tyre is only 700 x 32, which is too skinny for the mtb part of the build.

I don't know really, this is the checklist anyway:

• Either: singlespeed with track ends and V/canti mounts, or geared with vertical dropouts and an EBB (I don't want to be messing around aligning discs in track ends)
  
• Horizontal toptube/easy to shoulder (my bikes have to live in my bedroom, which means carrying them up two flights of stairs twice a day or more)
  
• Geometry suitable for my height (5ft 8" female, wary of a 29er here)
  
• Frame designed to take a rigid fork (if I'm selling two beloved bikes it had better be for a sub-20 lb build)
  

I've thought about a KM, but the unused braze-ons will bug me. I've basically got an idea of the perfect bike in my head, and am looking to consolidate 2 or 3 of my current bikes into one tri-purpose build that can switch between wheelsets for different purposes (commuting in shit weather, mtb'ing a few weekends a year, noddy low level CX in winter). But looking around it seems that what I want is too out of line with commercial interests to get anything OTP unfortunately.

This (in terms of the concept) is the closest I've found to what I want, but without going custom I'm clearly going to have to compromise...

On paper a pompino would be ideal, but max tyre is only 700 x 32, which is too skinny for the mtb part of the build.

I don't know really, this is the checklist anyway:

• Either: singlespeed with track ends and V/canti mounts, or geared with vertical dropouts and an EBB (I don't want to be messing around aligning discs in track ends)
  
• Horizontal toptube/easy to shoulder (my bikes have to live in my bedroom, which means carrying them up two flights of stairs twice a day or more)
  
• Geometry suitable for my height (5ft 8" female, wary of a 29er here)
  
• Frame designed to take a rigid fork (if I'm selling two beloved bikes it had better be for a sub-20 lb build)
  
  

I'm 5'7" and ride a 29er, so its doable if you can get the right geometry.
https://www.lfgss.com/post1236513-23417.html

It depends on what sort of off-roading you're doing but a CycloX bike can handle quite alot. I ride my utility bike off road alot, and its a blast.
https://www.lfgss.com/album.php?albumid=1126

Most cycloX frames will fit a 42, and you can always swap the fork for a 29er fork and run a fatter tyre up front.

i just sold a 26" wheeled kona unit. reckon that would have been perfect. you could fit 700's in it with a tyre up to 32 i think for the road, canti and disc mounts front and rear, chuck normal 26 inch wheels in for the mtb/cx days (as long as you arent racing). the rear drops are sliding so fixed or freewheel is fine. might have had to use clamp on mudguards but otherwise.....

good luck. the holy grail of bike is so different for each person no?

If only MTBing a few weekends a year then maybe hire a bike as otherwise you are making the build harder for just a couple of weekends riding. A cyclo-cross bike would cater for the main uses of commuting and cyclo-cross riding.
Or just go MTBing on the cross bike as well - massive tyres are overrated anyway :-)

I've thought about a KM, but the unused braze-ons will bug me.

cut them off.

i have a peregrine and i run 43c with mudgaurds + spacers + room to spare

edit: i might have a 47 on the front and 43 on the back come to think of it...

are you racing that at the Forest of Dean? Im taking a 26 " wheel bike.

I've thought about a KM, but the unused braze-ons will bug me.

The extra braze-ons will be less evident when it is built up (IMHO). I myself would like the opertunity to run discs later if it was me, and if so the V-brake mounts can likely be removed (I've seen a Voodoo wanga frame, were this was done and the holes filled and sprayed. Looked OK). The mudguard eyelets could come in handy too.

An alternative is the Salsa El Mariachi. Which is a similar frame but without v-brake mounts, and with an EBB. So disc only but cleaner looking.

http://www.tritoncycles.co.uk/products.php?plid=m4b0s251p3530

As TheBrick says the gear related braze-ons are easy to remove.

If your mainly riding on the road and canal paths etc. Then maybe the slow handling of a 29er is not the thing. In which case something like a cross check would be a nice base (lots of braze-ons again though).

Fatties Fit Fine (FFF) stays and our beautiful slope-crowned custom fork provide room for tires up to 700 x 45 with mud and fender clearance. For real!

Might fit a 2,0" 29er tyre without mudguards then?

Just my thoughts. It'd come down to the sort of handling you like I suppose.

I've got a cross check and it's a great all round bike. Biggest tyres I've fitted were Bontrager Jones AC-X 29 x 1.9, but there's only a few mm clearance so not great in the mud. Makes it into a fun monster truck cyclo cross bike.

I really think the best frame in this genre is the Singular Peregrine. Disc only with an EBB (which is much better than cantis), takes 29 x 2.1 tyres with a bit more clearance than the cross check, looks amazing. I'd have bought one if they did one big enough for my lanky frame. Would do all the things you want plus touring.

I've got a cross check and it's a great all round bike. Biggest tyres I've fitted were Bontrager Jones AC-X 29 x 1.9, but there's only a few mm clearance so not great in the mud. Makes it into a fun monster truck cyclo cross bike.

I really think the best frame in this genre is the Singular Peregrine. Disc only with an EBB (which is much better than cantis), takes 29 x 2.1 tyres with a bit more clearance than the cross check, looks amazing. I'd have bought one if they did one big enough for my lanky frame. Would do all the things you want plus touring.

With you on the Peregrine.
Just thought a lower TT might be a better idea for a shorter person riding off-road. I could'nt stand over the small :(

I make the standover on the 54 ETT cross check to be around 2" less. Plus, doesnt the geometry, of the cross check, become more compact as you go down in size?
http://www.surlybikes.com/frames/cross_check_frame/

A good point SF, but in typical girl fashion the majority of my height is in my legs (34" pins) so I can comfortably standover a 58cm horizontal tt road bike.

The Peregrine would be the very top of my budget for a frame, but I'll look a bit closer...

A good point SF, but in typical girl fashion the majority of my height is in my legs (34" pins) so I can comfortably standover a 58cm horizontal tt road bike.

The Peregrine would be the very top of my budget for a frame, but I'll look a bit closer...

If the Peregrine has a 83.5 cm standover (hard to see on the geo pic), thats 32.9", less if you fit fatter tyres. Also the 54cm top tube could be a touch long. If neither of these things are an issue, its well worth the price IMHO.

With you on the Peregrine.
Just thought a lower TT might be a better idea for a shorter person riding off-road. I could'nt stand over the small :(

I make the standover on the 54 ETT cross check to be around 2" less. Plus, doesnt the geometry, of the cross check, become more compact as you go down in size?
http://www.surlybikes.com/frames/cross_check_frame/

I have the opposite problem - 6'4" with a 37.5" inseam - so it's hard to get a frame which gets the bars to the right height. My 62cm cross check has about 4.5cm of spacers and a +15 degree stem to get the bars level with the saddle.

Konijn - I've got a Singular 29er and it is a wonderful frame, so I'd really recommend the brand if you can stretch to it and the geometry works for you. I'd also recommentd looking on singletrackworld.com for second hand MTB components to help lower the cost. I got some great deals on disc brakes, wheels, stem etc from there.

I may be selling my Singular Peregrine (small) if you are interested? Only done approximatley 300 miles. This could be frame/forks only or a few other bits as well....

let me know if you want photos.

are you racing that at the Forest of Dean? Im taking a 26 " wheel bike.

it will be with me as i am riding it for the tweed run the week before but will be riding a swift or griffin at the champs or some other mistery singular - come say hi at the singular tent - i'll be the one with the big beard or moustache and no doubt beer in my hand (like every other shmo there ;)

We'll have a couple of nice Peregrine builds at the Tweed Run. I'll be on a fixie resplendent in Berthoud stainless guards, Phil hubs, and a bit of Nitto. My Dad'll be on a more townie style with freewheel.

it will be with me as i am riding it for the tweed run the week before but will be riding a swift or griffin at the champs or some other mistery singular - come say hi at the singular tent - i'll be the one with the big beard or moustache and no doubt beer in my hand (like every other shmo there ;)

cool will do that ^ someone who is also in mentioned in an email that there could be geared riders there, shurely shome mistake?

well we are likely to meet at Tweed run too, Im taking a blue Copenhagen Pederson, (period bikes ftw)