Virtual buildoff

Sep 14, 2013
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Bradley Illinoiz
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The Challenge: create a bike design using...
Cad, napkins, graph paper or crayons.
Your noodled out designs with
multiple posts for a progression of ideas.
Anybody in?

Carl.
Sent from my moto g(6) play using temporal shifting...
 
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Sep 14, 2013
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and my idea transferred into paint.net for some cleanup and refining. The fork is still a mystery...
Muscle Spasm 2.jpg

I'm still tweaking drawings for the Columbia tandem I have yet to cut, but since the 26 x 4 wheelset showed up, it looks like I'll be building a whole rear triangle and using a jackshaft...

Carl
 
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Sep 14, 2013
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The fork is still up in the air.
The final fitment will be after the rear is assembled.
I think maybe I want a stock trail so that the rear steer will be smooth and easy, not a fight. A simple design.
Muscle Spasm 3.jpg

I also have an idea, much like Picasso's Bull
with a set of bars up front.

Carl.
 
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tjwilson

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Love the idea for the thread Carl. Great opportunity to see other's design and thought process. Here's an example of my typical approach.

Things usually start with spending way too much time searching images online:
inspiration.jpg


Lots of thumbnail sketches:
sketches.jpg


A slightly tighter sketch to be used for a trace once I have something that I think looks promising:
sketchSelected.jpg


I place the sketch into Adobe Illustrator to trace. I have "master" dimensions for distances between seat-crank-handlebars, trail, and crank centerline to ground clearance that I'll check and make adjustments as required. These dimensions are from previous builds and bikes that I have that I find comfortable to ride:
startTraceAI.jpg


Finished trace in Illustrator:
trace02AI.jpg


In Illustrator I split the trace into individual pieces that will be extruded in SketchUp:
traceSplit.jpg


The file is then exported as a CAD .dwg file and imported into SketchUp. SketchUp allows the outlines to be selected, face surfaces created and extruded, curved surfaces created between outlines generated, etc. Here is the imported .dwg drawing after pulling, stretching and combining in SketchUp:
sketchupProjection.jpg


Then the fun of playing with colors, angles and perspective. I've always left the 3D models pretty rough. Theres a lot of fine tuning, correcting and detailing that could be done. The purpose for me is to try and get a sketch that I like, adjusted to realistic dimensions, and then get a general idea of what it might look like in 3D:
decoVRdesign_09132018.jpg


decoVRdesign02_09132018.jpg


decoVRdesign_09122018_frnt3qtr.jpg


decoVRdesign_09122018_side.jpg


decoVRdesign_09122018_rear3qtr.jpg
 

The Renaissance Man

__CERTIFIED DIVER__ (Open Water & Open Dumpster)
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Love the idea for the thread Carl. Great opportunity to see other's design and thought process. Here's an example of my typical approach.

Things usually start with spending way too much time searching images online:
View attachment 84175

Lots of thumbnail sketches:
View attachment 84176

A slightly tighter sketch to be used for a trace once I have something that I think looks promising:
View attachment 84177

I place the sketch into Adobe Illustrator to trace. I have "master" dimensions for distances between seat-crank-handlebars, trail, and crank centerline to ground clearance that I'll check and make adjustments as required. These dimensions are from previous builds and bikes that I have that I find comfortable to ride:
View attachment 84178

Finished trace in Illustrator:
View attachment 84179

In Illustrator I split the trace into individual pieces that will be extruded in SketchUp:
View attachment 84180

The file is then exported as a CAD .dwg file and imported into SketchUp. SketchUp allows the outlines to be selected, face surfaces created and extruded, curved surfaces created between outlines generated, etc. Here is the imported .dwg drawing after pulling, stretching and combining in SketchUp:
View attachment 84181

Then the fun of playing with colors, angles and perspective. I've always left the 3D models pretty rough. Theres a lot of fine tuning, correcting and detailing that could be done. The purpose for me is to try and get a sketch that I like, adjusted to realistic dimensions, and then get a general idea of what it might look like in 3D:
View attachment 84182

View attachment 84183

View attachment 84185

View attachment 84184

View attachment 84186
I sure hope that you build this! Very nice.
 
Sep 14, 2013
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Thanks @tjwilson, I just thought a thread full of noodling would be a cool thing to share amongst ourselves. I have noodled a bit in Sketchup too. But what I really miss was the simplicity and the intuitiveness of Deluxe Paint on the Amiga platform. So for now paint.net is quick and easy, I can turn a photo into a line drawing pretty quickly. Plus I'm a hack anyway... your drawings are definitely pro.

Carl.
 
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Wow! I would love to see that built!
well I do have plans to build something similar but not so long in the back and maybe not so over engineered in the front,we will see,I will need to secure a cruiser frame first so may be a future build,Glen has been enlisted to help along the way if it takes off
 
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I've never built a frame but have had an idea for years. Since I probably won't have the means or place to build something, I might as well try to draw it here. My plan was to start with a regular cantilever frame and lay out the tubes, tack weld them to the donor frame. Then cut away the pieces I didn't want and finish it up with good welds. I would probably use the BB, seat tube, and head tube from the original frame so the angles would be good for riding and be easy to line up the drive train, and then do the forks and handlebars. I'm a poor artist, so I'm taking my time drawing it up. I'll post it up soon.