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


Go Back   > >

Track Cycling: Velodrome Racing and Training Area Looking to enter into the realm of track racing? Want to share your experiences and tactics for riding on a velodrome? The Track Cycling forums is for you! Come in and discuss training/racing, equipment, and current track cycling events.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-23-10, 12:04 AM   #1
F4UX3/2
death from your left
Thread Starter
 
F4UX3/2's Avatar
 
Join Date: Dec 2008
Location: San Francisco
Bikes: scott CR1 rase rig, special__ed langster commuter masheen
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
my cranks are 130 bcd am I effed

So I wanted to buy (or rather rescue) a cheap used fixie and turn it into something I could use at the track.

Just like my start with road bikes I bought something that I, knowing nothing about what I needed, decided looked like it would be good. I got a great deal on a used specialized langster thinking it's aluminum so it should be stiff and sugino cranks are supposed to be good right? Anyway I was going to order a 50t chain ring tonight and found out that unless I want to switch to a 3/32 chain and rear cogs pretty much everything that big and designed to be used on the track was 144 bcd.

can you convert 130 cranks to accept a 144 ring I couldn't find anything on the subject, or do I just need new cranks

thanks

Last edited by F4UX3/2; 03-23-10 at 12:07 AM.
F4UX3/2 is offline   Reply With Quote
Old 03-23-10, 12:09 AM   #2
Eric Estlund 
Member
 
Join Date: Oct 2009
Bikes: Winter Bicycles
Posts: 45
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
No adapter, but TA offers up to 52t 1/8 130bcd rings.
__________________
--
Eric Estlund
Winter Bicycles
Eric Estlund is offline   Reply With Quote
Old 03-23-10, 12:41 AM   #3
F4UX3/2
death from your left
Thread Starter
 
F4UX3/2's Avatar
 
Join Date: Dec 2008
Location: San Francisco
Bikes: scott CR1 rase rig, special__ed langster commuter masheen
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
awesome thanks

I also just realized that I could go up to about 85 gear inches with the stock 42t and a 13t cog, which is considerably cheaper and will at least get me through the beginner clinics.
F4UX3/2 is offline   Reply With Quote
Old 03-23-10, 02:05 AM   #4
carleton
Elitist
 
carleton's Avatar
 
Join Date: Jul 2005
Location: Atlanta, GA
Bikes:
Posts: 13,257
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 125 Post(s)
I'm not sure if you know this, but you will "grow" into bigger gears as the season progresses.

42/14 is exactly the same ratio as 48/16, which is the gear you will likely train on in the beginner classes and race with for the beginning of the season. This gear will probably become your warm up gear throughout the season.

When you are ready, your race gear will be the 42/13 which is the same as a 48/15. You'll probably race on that for most of the season.

Towards the last 1/3 of the season, you might grow out of the 42/13 but not be ready for a 12 yet, that's when you start fine tuning your gears with maybe a 43 or a 44.

So, for right now, all you need is a 14t cog for the beginner classes and the first few race days. Then buy a 13t. Before you go and buy chainrings, consider moving to 144BCD if you have the budget for it.

Also, go 1/8". 1/8" is the track standard. 3/32" is the exception to the rule.
__________________
Quote:
Originally Posted by gtrob View Post
Roadies can run tempo all year as that's what humans were designed for. If you want to be a cheetah, lay around and lick your paws more.
carleton is offline   Reply With Quote
Old 03-23-10, 10:48 AM   #5
fatallightning
Cat 666
 
fatallightning's Avatar
 
Join Date: Jul 2008
Location: nyack, ny (yes, that one)
Bikes:
Posts: 1,462
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
there are plenty of nice 130bcd rings, TA, stronglight, sugino, etc.
fatallightning is offline   Reply With Quote
Old 03-23-10, 12:51 PM   #6
F4UX3/2
death from your left
Thread Starter
 
F4UX3/2's Avatar
 
Join Date: Dec 2008
Location: San Francisco
Bikes: scott CR1 rase rig, special__ed langster commuter masheen
Posts: 286
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks guys

I ordered a 13 and 14 as I usually spin 50 x 15-17 in a flat crit and those come close to the top and bottom of that range, a friend is giving me a 48t 130bcd chain ring and 16t cog as well so I'll be well on my way to a quiver of gears.
F4UX3/2 is offline   Reply With Quote
Old 03-24-10, 01:50 PM   #7
lotek
Forum Admin
 
lotek's Avatar
 
Join Date: Dec 2001
Location: n.w. superdrome
Bikes: 1 trek, serotta, rih, de Reus, Pogliaghi and finally a Zieleman! and got a DeRosa
Posts: 17,710
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
not as effed as my 151BCD cranks.
__________________
Sono pił lento di quel che sembra.
Odio la gente, tutti.


Want to upgrade your membership? Click Here.
lotek is offline   Reply With Quote
Old 03-25-10, 01:08 PM   #8
Ray R
Registered User
 
Join Date: Jun 2004
Location: San Diego, California
Bikes: 5 Colnago, 2 Olmo, Bianchi, 4 Austro-Daimler, Merlin, Fisher Tandem, John Waite track tandem, Schwinns, Steyrs, Bill Holland Ti path racer, Chinese prototype FS
Posts: 445
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by lotek View Post
not as effed as my 151BCD cranks.
My fixed gear road bike has pre-1968 Campagnolo cranks with a 151 bcd. I currently have a 49 (which came with the cranks, found in the garage of an 80 year old former track rider) and a 45 which I found in Belgium on eBay. I am running 3/32" however. You may have more difficulty finding 1/8" but I'll bet there is some pre-'68 Campy stuff out there as well. Keep searching eBay!

Last edited by Ray R; 04-06-10 at 01:15 PM.
Ray R is offline   Reply With Quote
Old 04-04-10, 06:02 AM   #9
bikejack
Senior Member
 
Join Date: Aug 2004
Bikes:
Posts: 271
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Stronglight and TA both have a range of 130 1/8 chainrings. I have several of the Stronglights no problems and cheaper than the 144's available.
bikejack 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 09:11 PM.