Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-12-06, 08:33 AM   #1
Wheels4
Senior Member
Thread Starter
 
Wheels4's Avatar
 
Join Date: Sep 2005
Location: Decatur, alabama
Bikes: Trek Hybrid and Scott Roadie
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
cogs in back, single gear up front???

I'm not sure if anyone does this.... but, I've got a frame and fork i'm building up as my commuter/single track bike... and i was thinking that since i don't use the small ring and hardly use the big ring(got the road bike for fast stuff).. might be easier for me to make this a 9 speed bike. besides cranks with one chainring... is there anything else that I would need to purchase? assuming this is a good idea(which seems to be, for me)


thanks for any help given...

__________________
all-around: 09 Trek 7.3 FX
roadie: 09 Scott S60
Wheels4 is offline   Reply With Quote
Old 01-12-06, 08:43 AM   #2
shants
roll'em high
 
shants's Avatar
 
Join Date: Feb 2005
Location: columbus, ohio
Bikes:
Posts: 2,391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
depending on how you set it up (chainline of front ring relative to rear cassette), you might not be able to reliably use some of the gears with a 9 speed. i'm not particularly well-versed with respect to chainline tolerances on geared setups, but i know that you can only have it so far off. i suspect that, with a nine speed, if you can get the single chainring straight on with the fifth gear, you will probably be okay. just something to take into account.
shants is offline   Reply With Quote
Old 01-12-06, 08:43 AM   #3
Momentum
the goal
 
Join Date: Feb 2005
Location: Brixton, London
Bikes: Bob Jackson track
Posts: 457
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You relaise that this is the singlespeed and fixed gear (ie bikes with one gear) forum, don't you? You may have better luck in the commuting forum.
Momentum is offline   Reply With Quote
Old 01-12-06, 08:52 AM   #4
kbabin
Senior Member
 
kbabin's Avatar
 
Join Date: Mar 2004
Location: Fayetteville, AR
Bikes:
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The setup you are looking for is used by alot cyclocross racers. Post there for help...

Kevin
kbabin is offline   Reply With Quote
Old 01-12-06, 08:57 AM   #5
Wheels4
Senior Member
Thread Starter
 
Wheels4's Avatar
 
Join Date: Sep 2005
Location: Decatur, alabama
Bikes: Trek Hybrid and Scott Roadie
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Momentum
You relaise that this is the singlespeed and fixed gear (ie bikes with one gear) forum, don't you? You may have better luck in the commuting forum.

yes, I understand what forum this is... I was just asking.

thanks for the input all... I'll take it over to the commuting forum.
__________________
all-around: 09 Trek 7.3 FX
roadie: 09 Scott S60
Wheels4 is offline   Reply With Quote
Old 01-12-06, 09:03 AM   #6
eyefloater
Me talk pretty one day.
 
eyefloater's Avatar
 
Join Date: Aug 2005
Location: Toronto
Bikes:
Posts: 2,073
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It should work. Your chainline might run into trouble if you were thinking of using the largest or smallest ring, but in your case it should work fine.
eyefloater is offline   Reply With Quote
Old 01-12-06, 09:03 AM   #7
mattface
Senior Member
 
mattface's Avatar
 
Join Date: Sep 2005
Location: Montpeculiar, VT
Bikes: Soma Rush, Fuji Cross, Raleigh Technium Mtn Bike, Ross 10 speed with Shimano 600.
Posts: 3,949
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Back in my day we used to call that a 5-speed. I think you'd be better off using in internally geared hub like a Shimano Nexus INter-8 or SRAM S7
mattface is offline   Reply With Quote
Old 01-12-06, 09:14 AM   #8
mattface
Senior Member
 
mattface's Avatar
 
Join Date: Sep 2005
Location: Montpeculiar, VT
Bikes: Soma Rush, Fuji Cross, Raleigh Technium Mtn Bike, Ross 10 speed with Shimano 600.
Posts: 3,949
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Momentum
You relaise that this is the singlespeed and fixed gear (ie bikes with one gear) forum, don't you? You may have better luck in the commuting forum.
Oh like we are all bastions of on-topicness here. A few of us know something about gears, and are more than willing to help someone with an unconventional setup.
mattface is offline   Reply With Quote
Old 01-12-06, 09:19 AM   #9
shants
roll'em high
 
shants's Avatar
 
Join Date: Feb 2005
Location: columbus, ohio
Bikes:
Posts: 2,391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
end of thread.
shants is offline   Reply With Quote
Old 01-12-06, 09:23 AM   #10
Lunigma
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
sheldon brown has a similar setup, i forgot which bike he uses it on. one problem you might run into is that the chain might fall off the front. you should use a single speed chainring with high teeth so that it wont shift off. you could also use chain stoppers which prevent the chain from falling over.
  Reply With Quote
Old 01-12-06, 09:38 AM   #11
vobopl
re:member
 
Join Date: Jan 2005
Location: Cracow, Poland
Bikes: unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
Posts: 874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
or a front derailleur (no lever necessary) to act as chain guide.
vobopl is offline   Reply With Quote
Old 01-12-06, 09:53 AM   #12
Wheels4
Senior Member
Thread Starter
 
Wheels4's Avatar
 
Join Date: Sep 2005
Location: Decatur, alabama
Bikes: Trek Hybrid and Scott Roadie
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks for the suggestions guys... I've already done a search and found some issues to look for: like the 3rd eye chain thing, fr derailler fixed in one position. I was just wondering about chainline and spacing issues with a 9sp cassette... and anything else i was not aware of.

My next question was going to be how to set up as a single speed with the hub I already have instead of buying a fixed gear or s/s hub. but... I think i'll think about it alittle more.

thanks again everyone....
__________________
all-around: 09 Trek 7.3 FX
roadie: 09 Scott S60
Wheels4 is offline   Reply With Quote
Old 01-12-06, 10:01 AM   #13
jamey
Senior Member
 
jamey's Avatar
 
Join Date: Oct 2004
Location: st. pete/tampa, FL
Bikes:
Posts: 1,588
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
isn't this a common set-up for trials riders? keep in mind i said TRIALS not time trials..i could see everything getting out of control if i didn't make that clear.
jamey is offline   Reply With Quote
Old 01-12-06, 10:13 AM   #14
Alexi
Senior Member
 
Alexi's Avatar
 
Join Date: May 2004
Location: Boston
Bikes:
Posts: 814
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I rock that some times on cross bikes, just go to cyclocrossworld.com and pick up a dog tooth or a third eye
Alexi is offline   Reply With Quote
Old 01-12-06, 10:23 AM   #15
Momentum
the goal
 
Join Date: Feb 2005
Location: Brixton, London
Bikes: Bob Jackson track
Posts: 457
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wasn't trying to be rude - just checking that you knew.

If you're commuting with it (ie not doing trials) then you may find that a non-ramped, high tooth singlespeed/track ring on the front keeps the chain in place without needing a derailleur or other funky devices.
Momentum is offline   Reply With Quote
Old 01-12-06, 11:20 AM   #16
lala
contrarian
 
lala's Avatar
 
Join Date: Jan 2004
Location: CO Springs
Bikes: 80's ross road bike/commuter, 80's team miyata, 90's haro mtb xtracycle conversion, koga mitaya world traveler
Posts: 2,848
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Moved to cyclocross, since OP began a thread in commuting.
__________________
Higher ground for the apocalypse!
lala is offline   Reply With Quote
Old 01-12-06, 12:02 PM   #17
Spudmeister
Old enough to know better
 
Spudmeister's Avatar
 
Join Date: Feb 2005
Location: Kentucky
Bikes: On One, Surly, Gunnar, Lemond
Posts: 257
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Wheels4
i was thinking that since i don't use the small ring and hardly use the big ring(got the road bike for fast stuff).. might be easier for me to make this a 9 speed bike. besides cranks with one chainring... is there anything else that I would need to purchase?

I did this with a mtb bike a few years back - worked fine.
Spudmeister is offline   Reply With Quote
Old 01-12-06, 04:14 PM   #18
doco
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 775
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hey wheels, I am going to do the same thing. I bought a cheapo mtb bike at a garage sale for 15.00. I am going to convert it to a single speed beater. there are several places that have a tension device and spacers for the back. I am going to just take off the fd and put on a jumpstop to stop the chain coming off, then I am going to put this kit on from nashbar and try it out. i'll see hopw it works and go from there. here's a link to nashbar kit, 29.00 is cheap enough....also surly has some options too but more money...

http://www.nashbar.com/profile.cfm?c...eid=&pagename=
doco is offline   Reply With Quote
Old 01-12-06, 04:15 PM   #19
doco
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 775
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
oh if you decide on the nashbar set, get the 10% off coupon and use that too...whole thing will set you back 26.00
doco is offline   Reply With Quote
Old 01-12-06, 05:22 PM   #20
Wheels4
Senior Member
Thread Starter
 
Wheels4's Avatar
 
Join Date: Sep 2005
Location: Decatur, alabama
Bikes: Trek Hybrid and Scott Roadie
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by doco
oh if you decide on the nashbar set, get the 10% off coupon and use that too...whole thing will set you back 26.00
thanks doco.... appreciate it. and thanks to everyone else too. I might try the single speed option... not sure if my legs can handle the hills with just one speed though.
__________________
all-around: 09 Trek 7.3 FX
roadie: 09 Scott S60
Wheels4 is offline   Reply With Quote
Old 01-12-06, 07:57 PM   #21
xlntRider79
crushing all limitations
 
Join Date: Sep 2004
Bikes:
Posts: 138
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by vobopl
or a front derailleur (no lever necessary) to act as chain guide.
That's how I roll. (40 front, 11-32 rear) If your middle ring position lines up with the middle of the cassette well, then you should be able to use all 9 gears with no problem.
xlntRider79 is offline   Reply With Quote
Old 01-12-06, 08:39 PM   #22
jeff williams
I couldn't car less.
 
jeff williams's Avatar
 
Join Date: Nov 2003
Bikes: Ritchey P-series prototype, Diamondback, Nishiki Triathelon Pro.
Posts: 4,395
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There's a few threads on this in the mtb forum. 1 current and many to find using the search function.
Mtb cranks you just run the ring on the middle mount of the triple, chainline should be straight to the 5th cog. A single on a double would have an incorrect chainline -use a track or bmx single crank\spyder I guess?
Mines 38 to 11-30 not dedicated offroad, I do trials type climbing.
Max around 21.8? mph @ 80rpm flatland (26 inch wheel.) do it on 7-8 clusters (I need a strong chain for climbing).
Less IS more...fun.

And lighter.
G-luck

Last edited by jeff williams; 01-12-06 at 08:59 PM.
jeff williams is offline   Reply With Quote
Old 01-12-06, 08:42 PM   #23
Wheels4
Senior Member
Thread Starter
 
Wheels4's Avatar
 
Join Date: Sep 2005
Location: Decatur, alabama
Bikes: Trek Hybrid and Scott Roadie
Posts: 348
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
xlntrider.... how is that ratio working for ya? you climb alot with it? I have some pretty hard climbs on my commute.... and I was thinking about going with a 40 or something close. My cassette is 11-34 so that helps alittle bit.
__________________
all-around: 09 Trek 7.3 FX
roadie: 09 Scott S60
Wheels4 is offline   Reply With Quote
Old 01-13-06, 11:50 AM   #24
xlntRider79
crushing all limitations
 
Join Date: Sep 2004
Bikes:
Posts: 138
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Honestly, the MTB cassette is overkill for road riding, I problably use only the 6 smallest cogs on the road, even on steep hills. Of couse I'm more of a "masher" than a "spinner"

For CX the combination is usually pretty good. I say usually, because last Sunday, the mud was so thick that I could hardly turn the cranks on the flats and even had to pedal to carry any speed on the downhill sections. I was really wishing I had brought my MTB to the race that day.
xlntRider79 is offline   Reply With Quote
Old 01-13-06, 01:22 PM   #25
jeff williams
I couldn't car less.
 
jeff williams's Avatar
 
Join Date: Nov 2003
Bikes: Ritchey P-series prototype, Diamondback, Nishiki Triathelon Pro.
Posts: 4,395
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm 38 to 11-30. Runs great on anything. 26 inch wheels.
jeff williams is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 05:07 PM.