Go Back  Bike Forums > Bike Forums > Framebuilders
Reload this Page >

Anything about this design an obvious trainwreck?

Notices
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.

Anything about this design an obvious trainwreck?

Old 09-16-13, 03:43 PM
  #1  
Senior Member
Thread Starter
 
corwin1968's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Likes: 0
Liked 32 Times in 18 Posts
Anything about this design an obvious trainwreck?

I'm playing around with a design that is inspired by vintage MTB drop-bar conversions and the 26" Rivendell Atlantis. I used Bikcad for this rendering and the wheels are 26" and the tires 50mm Schwalbe Big Apples. Does anything jump out as unworkable given the other measurements and if you were going to recommend a change, what would it be. This is a theoretical recreation/fitness/all-purpose bike. Lots of rides around the neighborhood, on local MUPS, maybe some hard-packed dirt, maybe some 20-30-40 mile rides. The goal is agile & sporty but stout enough for a large Clydesdale. Geometry is based on what I like in a 700c bike and some pulled directly from other 26" bikes or WAGS.

Attached Images
File Type: jpg
Custom frameset idea.jpg (75.4 KB, 78 views)
corwin1968 is offline  
Old 09-16-13, 03:50 PM
  #2  
Carpe Velo
 
Yo Spiff's Avatar
 
Join Date: Dec 2011
Location: Fort Worth, Texas
Posts: 2,520

Bikes: 2000 Bianchi Veloce, '88 Schwinn Prologue, '90 Bianchi Volpe,'94 Yokota Grizzly Peak, Yokota Enterprise, '16 Diamondback Haanjo, '91 Bianchi Boardwalk, Ellsworth cruiser

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 14 Times in 13 Posts
I like the fact that you've put the bars up at saddle level. Top tube is just about the same length as on my own do-everything bike, though mine is slightly sloping, so yours is effectively just a touch longer. I don't know about all the other dimensions, as I'm not a framebuilder. Brake bosses appear to be way too high, cantis and V-brakes have the bosses just below the level of the rim. I think you were really just playing with frame dimensions, however.
Yo Spiff is offline  
Old 09-16-13, 03:54 PM
  #3  
Senior Member
Thread Starter
 
corwin1968's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Likes: 0
Liked 32 Times in 18 Posts
Originally Posted by Yo Spiff
I like the fact that you've put the bars up at saddle level. Top tube is just about the same length as on my own do-everything bike, though mine is slightly sloping, so yours is effectively just a touch longer. I don't know about all the other dimensions, as I'm not a framebuilder. Brake bosses appear to be way too high, cantis and V-brakes have the bosses just below the level of the rim. I think you were really just playing with frame dimensions, however.

Yeah, mostly what is labeled. The detail stuff I'll leave to the frame builder...if I ever actually have it built.
corwin1968 is offline  
Old 09-16-13, 05:41 PM
  #4  
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: Santa Rosa, California
Posts: 10,489

Bikes: Waterford 953 RS-22, several Paramounts

Mentioned: 71 Post(s)
Tagged: 0 Thread(s)
Quoted: 634 Post(s)
Liked 68 Times in 57 Posts
The thing that stands out for me is the 45mm BB drop. My road bikes all have BB drops in the 70mm-75mm range, and even my track bikes, which typically have the least BB drop, have a 55mm drop.
__________________
- Stan

my bikes

Science doesn't care what you believe.
Scooper is offline  
Old 09-16-13, 06:12 PM
  #5  
Senior Member
Thread Starter
 
corwin1968's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Likes: 0
Liked 32 Times in 18 Posts
Originally Posted by Scooper
The thing that stands out for me is the 45mm BB drop. My road bikes all have BB drops in the 70mm-75mm range, and even my track bikes, which typically have the least BB drop, have a 55mm drop.
The BB drop is something I took from other 26" bikes. My 700c bike has 70mm drop and I'm pretty happy with that but I have no idea how that translates to 26" wheeled bikes.
corwin1968 is offline  
Old 09-16-13, 06:36 PM
  #6  
don't try this at home.
 
rm -rf's Avatar
 
Join Date: Jan 2006
Location: N. KY
Posts: 5,918
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 964 Post(s)
Liked 495 Times in 342 Posts
It reminds me of this All-City Cycles Space Horse.

rm -rf is offline  
Old 09-16-13, 06:48 PM
  #7  
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: Santa Rosa, California
Posts: 10,489

Bikes: Waterford 953 RS-22, several Paramounts

Mentioned: 71 Post(s)
Tagged: 0 Thread(s)
Quoted: 634 Post(s)
Liked 68 Times in 57 Posts
Originally Posted by corwin1968
The BB drop is something I took from other 26" bikes. My 700c bike has 70mm drop and I'm pretty happy with that but I have no idea how that translates to 26" wheeled bikes.
Oops! Sorry, I missed that little detail. Looking at the Rivendell Atlantis geometry tables, the 26" (559mm BSD rims) models have a BB drop of 48mm, and that's with 26 x 2.35 tires.
__________________
- Stan

my bikes

Science doesn't care what you believe.
Scooper is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
blujosh
Commuting
44
12-07-15 04:54 PM
DIMcyclist
Classic & Vintage
2
09-26-12 09:11 AM
adamskiboy
Track Cycling: Velodrome Racing and Training Area
8
07-02-12 01:38 PM
Adrian_
Singlespeed & Fixed Gear
3
04-12-12 02:00 PM
paipo
Track Cycling: Velodrome Racing and Training Area
4
09-22-10 03:05 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.