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


Go Back   > >

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)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-27-10, 07:28 PM   #1
jslug1234
Junior Member
Thread Starter
 
Join Date: Jun 2010
Bikes:
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
what to look for in bike geometry.

Im kind of new to this and was wondering what i could judge and what means what when it comes to frame/ fork (or any other parts') geometry. It would be nice just to know what im looking at and how to judge what bikes and parts are good for me.
jslug1234 is offline   Reply With Quote
Old 08-27-10, 08:32 PM   #2
europa
Grumpy Old Bugga
 
europa's Avatar
 
Join Date: Oct 2006
Location: Adelaide, AUSTRALIA
Bikes: Europa, Hillbrick, Road Chief, Repco Superlite (Ol' Rusty)
Posts: 3,328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
'Tis an impossible question to answer for you mate, without very specific requirements and, as you admit to being new to this, you don't actually know what those requirements are. Bikes are a bunch of compromises and how they gell also depends on the person riding them - for example, my son and I are the same height, but a full on sports bike for him would be much more aggressive than a full on sports bike for me due to the ravages of those extra 35 years of life that I carry (ie, I'm a fat old bugga while he's young and impossibly fit).

The best tip is to get out and ride as many bikes as you can. Long rides and regular useage are best but it's hard to get someone to loan you a bike for that. In the mean time, build yourself a few. Get a track frame (ie, very aggressive) and build that into a cheap bike. Get an old roadie (ie, more relaxed) and build that into a cheap bike. See which one you prefer and why. Which one suits your lifestyle, and that's a bigger question than most people realise - it might look cool to ride a track bike with very low bars, but I ride 30kms to work up and down some nasty hills and I can assure you that such a track bike has little attraction for me.

There's another option too - own lots of different bikes

But yeah, it's a journey of self discovery. Once you've decided you like such and such a bike, you can then refine it into something better. For example, I love my old roadie based Europa, but am having a new bike built with more sporting geometry while still giving me the riding position I find so comfortable.

Richard
europa is offline   Reply With Quote
Old 08-27-10, 09:07 PM   #3
Scooper
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: San Francisco California
Bikes: Waterford 953 RS-22
Posts: 10,230
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
You might read and digest Dave Moulton's Blog entries on bicycle design to get a flavor of the effects of steeper/slacker frame angles, longer/shorter trail, longer/shorter chainstays, more/less bottom bracket drop, longer/shorter wheelbase, etc., on handling, comfort, etc.
__________________
- Stan
I'm with her.
Scooper is offline   Reply With Quote
Old 08-27-10, 09:34 PM   #4
adriano 
*
 
adriano's Avatar
 
Join Date: Nov 2008
Location: Baltimore
Bikes: http://velospace.org/node/18951
Posts: 6,879
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
flat or down sloping top tube, steep head tube, 'tight' wheelbase, lugged, steel, brand name, no bosses, short headtube for saddle to handlebar drop, threaded headset, track drops, mks pedals, double straps, njs or campanyolo everything, 40mm rims, expensive hubs, and all that other functional stuff.
__________________

α
adriano is offline   Reply With Quote
Old 08-27-10, 09:39 PM   #5
carleton
Elitist
 
carleton's Avatar
 
Join Date: Jul 2005
Location: Atlanta, GA
Bikes:
Posts: 13,269
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
Quote:
Originally Posted by jslug1234 View Post
Im kind of new to this and was wondering what i could judge and what means what when it comes to frame/ fork (or any other parts') geometry. It would be nice just to know what im looking at and how to judge what bikes and parts are good for me.
It sucks that you have to do this all alone with just the internet to help you. I mean, it would be so cool if there was like a regional, hell, while we are wishing, a LOCAL shop you could go to and they would have people to help you. (and while we are still wishing) they would have bikes IN THE STORE ... IN ALL SIZES for you to try on. That would be so cool.
__________________
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 08-27-10, 09:40 PM   #6
Squirrelli
GONE~
 
Join Date: Apr 2010
Bikes:
Posts: 6,757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by adriano View Post
flat or down sloping top tube, steep head tube, 'tight' wheelbase, lugged, steel, brand name, no bosses, short headtube for saddle to handlebar drop, threaded headset, track drops, mks pedals, double straps, njs or campanyolo everything, 40mm rims, expensive hubs, and all that other functional stuff.
You missed the >80 seat tube angle.
Squirrelli is offline   Reply With Quote
Old 08-27-10, 09:53 PM   #7
WoundedKnee
Antarctica awaits
 
WoundedKnee's Avatar
 
Join Date: Jun 2009
Location: Tucson, Zona
Bikes:
Posts: 1,965
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by carleton View Post
It sucks that you have to do this all alone with just the internet to help you. I mean, it would be so cool if there was like a regional, hell, while we are wishing, a LOCAL shop you could go to and they would have people to help you. (and while we are still wishing) they would have bikes IN THE STORE ... IN ALL SIZES for you to try on. That would be so cool.
WoundedKnee is offline   Reply With Quote
Old 08-27-10, 09:55 PM   #8
carleton
Elitist
 
carleton's Avatar
 
Join Date: Jul 2005
Location: Atlanta, GA
Bikes:
Posts: 13,269
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
__________________
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 08-27-10, 11:08 PM   #9
six30nine
Senior Member
 
six30nine's Avatar
 
Join Date: Apr 2010
Location: Vancouver, WA
Bikes:
Posts: 63
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by carleton View Post
It sucks that you have to do this all alone with just the internet to help you. I mean, it would be so cool if there was like a regional, hell, while we are wishing, a LOCAL shop you could go to and they would have people to help you. (and while we are still wishing) they would have bikes IN THE STORE ... IN ALL SIZES for you to try on. That would be so cool.
That's crazy talk! Next you'll start making up stuff like this mythical place you speak of selling parts and accessories (in different sizes and colors) and possibly doing repairs and adjustments. Whatever you're smoking, I want some!
six30nine is offline   Reply With Quote
Old 08-28-10, 01:14 AM   #10
WoundedKnee
Antarctica awaits
 
WoundedKnee's Avatar
 
Join Date: Jun 2009
Location: Tucson, Zona
Bikes:
Posts: 1,965
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by carleton View Post
...
WoundedKnee is offline   Reply With Quote
Old 08-28-10, 02:22 AM   #11
Sixty Fiver
Bicycle Repair Man !!!
 
Sixty Fiver's Avatar
 
Join Date: Sep 2007
Location: YEG
Bikes: See my sig...
Posts: 27,264
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Quote:
Originally Posted by Scooper View Post
You might read and digest Dave Moulton's Blog entries on bicycle design to get a flavor of the effects of steeper/slacker frame angles, longer/shorter trail, longer/shorter chainstays, more/less bottom bracket drop, longer/shorter wheelbase, etc., on handling, comfort, etc.
This ^^^
Sixty Fiver 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 01:07 AM.