Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

1 bike - 2 purposes - help me gear this properly

Notices
Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

1 bike - 2 purposes - help me gear this properly

Old 09-30-15, 10:17 PM
  #1  
TenSpeedV2
Senior Member
Thread Starter
 
TenSpeedV2's Avatar
 
Join Date: Dec 2014
Posts: 4,349

Bikes: Felt TK2, Felt Z5

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 942 Post(s)
Likes: 0
Liked 14 Times in 14 Posts
1 bike - 2 purposes - help me gear this properly

2014 Specialized Crave SL:

Currently setup as a SS mountain bike, 34:17 which seems about perfect for the trails here. What I want to do, and plan on doing, is making it a winter commuter. Will throw on some slicker tires as the weather changes and eventually a studded setup. I would like to gear this more appropriately for the street. So I am thinking about getting a second chain and a chainring and just leaving the 17T on there and rolling it. I don't need anything super high but would like something that will let me build up a little speed on a rather flat commute. Any suggestions? The bike does have an EBB as well.
TenSpeedV2 is offline  
Old 09-30-15, 10:22 PM
  #2  
lkyjoker86
Junior Member
 
Join Date: Sep 2014
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
46/17 would work I think.
lkyjoker86 is offline  
Old 10-01-15, 09:36 AM
  #3  
ggpepper
Senior Member
 
ggpepper's Avatar
 
Join Date: Sep 2014
Location: ATX
Posts: 113

Bikes: Trek, Traitor, Marin, Nashbar

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 24 Times in 10 Posts
I ride 42:17 on my Hamilton but I think you would find that too low. A 46 or 48 chainring would be my best guess.
ggpepper is offline  
Old 10-01-15, 09:38 AM
  #4  
nripin
Senior Member
 
Join Date: Nov 2011
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
https://www.surplace.fr/ffgc/
nripin is offline  
Old 10-01-15, 10:17 AM
  #5  
TenSpeedV2
Senior Member
Thread Starter
 
TenSpeedV2's Avatar
 
Join Date: Dec 2014
Posts: 4,349

Bikes: Felt TK2, Felt Z5

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 942 Post(s)
Likes: 0
Liked 14 Times in 14 Posts
Thanks for that link. That is the best calculator I have seen so far.
TenSpeedV2 is offline  
Old 10-01-15, 10:47 AM
  #6  
IAmSam
Senior Member
 
Join Date: Oct 2012
Posts: 1,425
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 327 Post(s)
Liked 113 Times in 56 Posts
Originally Posted by TenSpeedV2 View Post
Thanks for that link. That is the best calculator I have seen so far.
Needs gear inches...
IAmSam is offline  
Old 10-01-15, 11:31 AM
  #7  
TenSpeedV2
Senior Member
Thread Starter
 
TenSpeedV2's Avatar
 
Join Date: Dec 2014
Posts: 4,349

Bikes: Felt TK2, Felt Z5

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 942 Post(s)
Likes: 0
Liked 14 Times in 14 Posts
I don't need gear inches honestly. I just would like to see what the equivalents are depending on what you use for the rear, i.e. what a 46:16 would convert to with another set up.
TenSpeedV2 is offline  
Old 10-01-15, 11:37 AM
  #8  
hohum
Senior Member
 
hohum's Avatar
 
Join Date: Aug 2015
Location: Jersey Shore
Posts: 117
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Edit: sorry, didn't read OP
hohum is offline  
Old 10-01-15, 12:03 PM
  #9  
IAmSam
Senior Member
 
Join Date: Oct 2012
Posts: 1,425
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 327 Post(s)
Liked 113 Times in 56 Posts
Originally Posted by TenSpeedV2 View Post
I don't need gear inches honestly. I just would like to see what the equivalents are depending on what you use for the rear, i.e. what a 46:16 would convert to with another set up.
IMHO G/I is the by far best way to give you the comparison you ask for...simple gear ratio doesn't account for variables like wheel/tire size & crankarm length

nripin's link does give development but IMHO it is nowhere near as ez to relate to as gear inches

Check this one out, its got effin everything...Catculator, the Fixed Gear Calculator
IAmSam is offline  
Old 10-01-15, 02:01 PM
  #10  
SquidPuppet
Calamari Marionette Ph.D
 
SquidPuppet's Avatar
 
Join Date: Dec 2013
Location: Coeur d' Alene
Posts: 7,862

Bikes: 3 Chinese Gas Pipe Nerdcycles and 2 Chicago Electroforged Boat Anchors

Mentioned: 74 Post(s)
Tagged: 0 Thread(s)
Quoted: 2356 Post(s)
Liked 20 Times in 17 Posts
Originally Posted by IAmSam View Post

Check this one out, its got effin everything...Catculator, the Fixed Gear Calculator
Thank you, thank you, thank you. That's the slickest and most complete one I've seen. Easy to use and auto results when you change a field.
SquidPuppet is offline  
Old 10-01-15, 05:57 PM
  #11  
hardboiled718
Senior Member
 
Join Date: Nov 2014
Posts: 516
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 71 Post(s)
Likes: 0
Liked 12 Times in 10 Posts
Originally Posted by IAmSam View Post
Check this one out, its got effin everything...Catculator, the Fixed Gear Calculator
Nice link, I like how it displays everything at once, GI, RPMs, speed, etc.

Here's another good one I used to use: BikeCalc.com - Fixed Gear Calculator
I like it because you can bring up several different ratios at one time on a graph
hardboiled718 is offline  
Old 10-03-15, 10:26 AM
  #12  
idc
Senior Member
 
Join Date: Oct 2009
Location: Virginia/DC
Posts: 1,454

Bikes: quite a few

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
46/17 sounds about right to me although it depends a little on the tire size. If you're running 29ers with studs maybe 44/17 would be better.

Originally Posted by IAmSam View Post
IMHO G/I is the by far best way to give you the comparison you ask for...simple gear ratio doesn't account for variables like wheel/tire size & crankarm length[/URL]
Gear inches don't account for crank length.
idc is offline  
Old 10-03-15, 10:38 AM
  #13  
ThermionicScott 
7-speed cultist
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 20,093

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)

Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 2792 Post(s)
Liked 736 Times in 517 Posts
Originally Posted by TenSpeedV2 View Post
I don't need gear inches honestly. I just would like to see what the equivalents are depending on what you use for the rear, i.e. what a 46:16 would convert to with another set up.
It's simple math. Dividing the chainring teeth by the cog teeth gives a ratio, which you can multiply by any cog to get the equivalent chainring size (after rounding). So 46/16 gives 2.875, if you wanted to use a 15T cog instead, multiply those two and get 43.125. 43T, bam.

For my fixed-gear, I permanently have a 16T and 18T installed on the flip-flop hub, and I switch between a 42T chainring in the winter and a 45T chainring in the other three seasons. So by using 42/18 in the winter and 45/16 the rest of the time, I'm able to keep using the same chain year-round.
__________________
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498
ThermionicScott is offline  
Old 10-03-15, 02:55 PM
  #14  
TenSpeedV2
Senior Member
Thread Starter
 
TenSpeedV2's Avatar
 
Join Date: Dec 2014
Posts: 4,349

Bikes: Felt TK2, Felt Z5

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 942 Post(s)
Likes: 0
Liked 14 Times in 14 Posts
Just based on the fact that this is a 34:17, using the one chain isn't feasible. I would like to go to a 45 or 46 up front so I will need a second one. I don't mind honestly.
TenSpeedV2 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
marzattx
Singlespeed & Fixed Gear
3
07-11-17 08:45 PM
mja024
Bicycle Mechanics
25
01-09-16 05:09 PM
tomfer
Bicycle Mechanics
25
07-25-11 03:40 AM
cL0h
Bicycle Mechanics
11
08-17-10 10:16 AM
nicknyce26
Singlespeed & Fixed Gear
7
07-03-10 09:55 PM

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.