Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

fork spacing

Old 12-14-05, 04:21 AM
  #1  
Seggybop
o.O
Thread Starter
 
Seggybop's Avatar
 
Join Date: Dec 2004
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
fork spacing

I'm about to make a fork and I'm wondering if there's any particular reason why the fork needs to be more narrowly spaced than the rear dropouts? I would like to have the spacing in front and back be the same so that it would be possible to switch the front and rear wheel if this was at any time desired. Any reason why I should not do this?
Seggybop is offline  
Old 12-14-05, 06:56 AM
  #2  
Bing
Senior Member
 
Bing's Avatar
 
Join Date: Mar 2005
Posts: 78
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Seggybop
I'm about to make a fork and I'm wondering if there's any particular reason why the fork needs to be more narrowly spaced than the rear dropouts? I would like to have the spacing in front and back be the same so that it would be possible to switch the front and rear wheel if this was at any time desired. Any reason why I should not do this?
Because unlike the rear, the front hub doesn't have a cog/cassette so there's nothing for the chain to go around? Are you planning to push this thing with your feet or just coast downhill?
Bing is offline  
Old 12-14-05, 08:22 AM
  #3  
Nessism
Senior Member
 
Nessism's Avatar
 
Join Date: Jun 2004
Location: Torrance, CA
Posts: 2,725

Bikes: Homebuilt steel

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
Liked 9 Times in 9 Posts
What kind of front hub are you thinking of using? All regular front hubs use 100mm spacing between the axles.
Nessism is offline  
Old 12-14-05, 08:55 AM
  #4  
Mike T.
All-round nice guy.
 
Mike T.'s Avatar
 
Join Date: May 2005
Location: Ontario Canada
Posts: 448

Bikes: Kish road bike, Seven mtb, Marinoni road and track bikes.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I did a quick check of the date and yup I was right - it isn't April 1st. I thought I'd blacked out for three months until I checked.

As weird as this post might sound, there IS a mountain bike that uses rear hubs for both front and rear wheels. The name will come to me after I hit "reply". The bike is a snow/sand bike and uses monster wide rims and tires and they use a rear hub up front to get as much spoke width as possible.
Mike T. is offline  
Old 12-14-05, 10:48 AM
  #5  
trackasaurus
guy
 
trackasaurus's Avatar
 
Join Date: Sep 2004
Location: Montreal
Posts: 135

Bikes: Bianchi vigorelli

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
surly pugsly
trackasaurus is offline  
Old 12-14-05, 01:05 PM
  #6  
Seggybop
o.O
Thread Starter
 
Seggybop's Avatar
 
Join Date: Dec 2004
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
the idea is a rear hub flipflop hub on both wheels. switch between 4 gears, and backup if it gets stripped and the nearest bike shop is a thousand miles away.
Seggybop is offline  
Old 12-14-05, 01:15 PM
  #7  
halfbiked
dangerous with tools
 
halfbiked's Avatar
 
Join Date: Aug 2004
Location: minneapolis
Posts: 4,502

Bikes: fat, long, single & fast

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
i'm not a frame/wheel geometry guru, but if your rear wheel isn't offset, it should work just fine. Seems like running 2 wheels with flipflop hubs would do it.
halfbiked is offline  
Old 12-14-05, 07:41 PM
  #8  
Thylacine
Industry Maven
 
Thylacine's Avatar
 
Join Date: Oct 2003
Location: Wherever good bikes are sold
Posts: 2,936

Bikes: Thylacines...only Thylacines.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
This is actually not a completely daft idea. If you ran two dishless hubs of equal width, on a singlespeed for example, you could have two flip flop hubs with the potential of having 4 rear cogs.

Why you'd want to do that though I'm not quite sure!
Thylacine is offline  
Old 12-14-05, 08:58 PM
  #9  
baxtefer
Cornucopia of Awesomeness
 
baxtefer's Avatar
 
Join Date: Oct 2004
Location: not where i used to be
Posts: 4,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
^ almost the idea of a pugsley

instead of the 4 gears it allows to to have 2 gears + disc brakes.
baxtefer is offline  
Old 01-08-06, 02:55 AM
  #10  
meb
Senior Member
 
meb's Avatar
 
Join Date: Aug 2003
Location: arlington, VA
Posts: 1,745
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Seggybop
the idea is a rear hub flipflop hub on both wheels. switch between 4 gears, and backup if it gets stripped and the nearest bike shop is a thousand miles away.
Another fopaw to avoid durring your construction is to make the droppout diameters large enough for rear axles.
meb is offline  
Old 01-08-06, 06:04 AM
  #11  
Seggybop
o.O
Thread Starter
 
Seggybop's Avatar
 
Join Date: Dec 2004
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Will there be any problem with having a dropout slightly wider than the axle in it as long as the axle is bolted securely?
Seggybop is offline  
Old 01-08-06, 11:23 AM
  #12  
velonomad
Older I get, Better I was
 
velonomad's Avatar
 
Join Date: Nov 2003
Location: Greenfield Lake, Wilmington NC
Posts: 1,764

Bikes: '14 BD Lurch Fatbike, '10 homemade road,'03 homemade tourer, '94 Yokota Tandem, '88 homemade MTB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 34 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
A guy in my 'hood built a fixie with that setup. He used QBP part # FS2251 front dropouts and opened the wheel slot up with a file to accomadate the extra axle diameter. Looks cool but the last tine we went riding together I was getting pissed with him about stopping to swap or reverse wheels or otherwise fiddle fart with the wheels whenever the hills got steep.
velonomad is offline  
Old 01-08-06, 02:30 PM
  #13  
Kogswell
Matthew Grimm / Flunky
 
Kogswell's Avatar
 
Join Date: Jan 2005
Posts: 656
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Seggybop
Will there be any problem with having a dropout slightly wider than the axle in it as long as the axle is bolted securely?
What velonomad said.

You can use rear hub up front, but be prepared
for the axle to be bigger. Most roadish front
axles are 9mm and most rears are 10mm.
Kogswell is offline  
Old 01-09-06, 11:09 PM
  #14  
CK95959
bike maker
 
Join Date: Jan 2006
Location: Nevada City CA
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
do it Seggybop! its a good idea and you shouldn't think twice about it. having an interchangable front and rear wheel is a good idea for touring in desolate regions and also a good idea for having more interchangable gearing for a one speed.

Sure you'll have to widen the slots for a 10mm axle but so what.

I might whoop one up for myself just for the heck of it.

More people should build thier own stuff.

CK
CK95959 is offline  
Old 01-10-06, 04:53 AM
  #15  
meb
Senior Member
 
meb's Avatar
 
Join Date: Aug 2003
Location: arlington, VA
Posts: 1,745
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Seggybop
Will there be any problem with having a dropout slightly wider than the axle in it as long as the axle is bolted securely?
Greater risk of bending an axle with the longer moment you put on it. Since you probably have more weight on the rear than the front anyway, the front isn't likely to be the more likely source for an axle failure. With flip flop hubs, I would think you've already minimized that risk to begin with.
meb is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
CrowSeph
Classic & Vintage
0
07-18-18 06:06 AM
mwl001
Hybrid Bicycles
0
06-06-14 02:48 PM
jamesaf
Classic & Vintage
0
07-15-10 09:01 PM
PolishPostal
Road Cycling
0
05-11-05 01:54 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

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.