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


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-12-12, 09:24 PM   #1
greaper007
Senior Member
Thread Starter
 
Join Date: Feb 2004
Location: Denver, CO
Bikes:
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
New frame jig for sale on instructables

This isn't an advertisement, I just noticed this instructable

http://www.instructables.com/id/Buil...-routed-frame/,

that showed how to use this frame jig

http://www.flatpackfoundry.com/index...&product_id=50

For 350 dollars this seems like an ok deal for a hobbyist builder, what do the more experienced folks think?
greaper007 is offline   Reply With Quote
Old 04-12-12, 10:23 PM   #2
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Bikes:
Posts: 14,664
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
there are a number of plans out there for much nicer jigs that probably don't cost that much. You can get aluminum extrusions from Misumi for a very reasonable price. Apparently nobody has ever felt like offering a kit though, that is one disadvantage. I'm guessing a lot of these jig kits don't get built.

We discussed the jig in question in this thread.
unterhausen is offline   Reply With Quote
Old 04-12-12, 11:09 PM   #3
MassiveD
Senior Member
 
Join Date: Jul 2011
Bikes:
Posts: 2,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Before buying anything, I would create a list of things a jig might do for you, such as:

Be easily adjusted

Be easily positioned for hot work, so you can have parts at any angle you want so gravity is your friend

Have sufficient offset, and yet be sturdy enough that offset does not compromise function.

Be reasonably able to handle the range of designs one want to create.

Easily related design parameters to jig position. This can be a big time waster. The Paterek method works, but is quite time consuming to relate.

Define dimensions and fits

Be adapted to your form of building

Fix parts firmly enough that they do not shift during reasonable hot work

Increase efficiency

Contribute to the professional level of your shop where relevant

Aid in designing

Support purging, heat sinking, grounding, whatever...

Etc...

Then ask yourself whether a particular design will do whichever of these or others, you want. I have 5 basic requirements, and most of the jigs I looked at were pretty close to zero on them. The jig I eventually bought thinking it would handle my 5, ended up not doing it, it only hit 3. For instance it was too short for some of the frames I wanted to build, it had never occured to me to ask, since I assumed it would build something other than track bikes...

A lot of jigs are just jigs, the don't actually do anything.
MassiveD is offline   Reply With Quote
Old 04-13-12, 10:03 PM   #4
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Bikes:
Posts: 14,664
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
I recently realized I would have a really hard time building a 'bent on my jig. that's a little annoying
unterhausen is offline   Reply With Quote
Old 04-14-12, 03:45 PM   #5
MassiveD
Senior Member
 
Join Date: Jul 2011
Bikes:
Posts: 2,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
I have a tandem project idea, half of it will probably be straight...
MassiveD 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 06:33 AM.