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Subframe fab

jimboFosho said:
Hah! Now EE is just a little over the top don't ya think :twofinger
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EE drops you down into nerd status..

juanrrabicorto-150x150.jpg

http://www.elexpecial.com/wp-content/uploads/2010/09/juanrrabicorto-150x150.jpg
 
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DannoXYZ said:
Whisky_Richard & stangmx13, interesting discussions. Let's work up some FEA models to test and do some real-world loading and see how they compare. You guys familiar with SolidworksPlus?
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Give me some dimensions and I'll bite.

At work we generally use ProMechanica for our rough stress analysis. I could always have the analysis team downstairs do a monte carlo (given the correct boundary conditions) and run it through NASTRAN though.:nerd

I still maintain that to keep the same design, but to stiffen/strengthen it, the best bet would be to stitch weld strips of steel along the top and bottom of the cantilevered portion of the subframe (and extend the strips into the non-cantilevered portion).

I agree that pushing the truss out to reduce the cantilever length would be ideal structurally, but it wouldn't look as nice. I also agree that making the tubing 2" tall would be more efficient, but I also think that wouldnt look as nice either.

Lastly, I think it would be safe to assume the bolted joints are free to rotate. If this guy rides this thing enough, they will work loose eventually :ride
 
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I ride more days than I don't... don't know how many miles on it so far because I haven't had an odometer much, but I've worn out a couple Angel ST rears and a couple sport tires.
 
jimboFosho said:
Heh, throw up some dimensions and we can figure some stuff out. I am currently running autodesk cause my solidworks got all messed up when I moved some files around.
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Whisky_Richard said:
Give me some dimensions and I'll bite.

At work we generally use ProMechanica for our rough stress analysis. I could always have the analysis team downstairs do a monte carlo (given the correct boundary conditions) and run it through NASTRAN though.:nerd
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Working those up. Using the OP's material as starting point. Will devise a test-configuration to sample same-length beams with differing orientations and reinforcement methods.

I would also like to verify with physical testing as well. May need to downsize the tubing in order to get meaningful and measurable deflection numbers with safe loads. Don't want to be loading up a beam with 1000-lbs of force in case it snaps...
 
part of why I made this subframe/seat combo is I wanted to be able to take a passenger :rofl
 
Bike looks cool!

Off topic:

We should build a big ring and let the engineers battle it out with micrometers and slide rules......
"TONIGHT WE DINE.....ON THE PERIOTIC TABLE!!!!"
 
super sweet!! i love custom projects like this!
 
I love where you mounted the R/R. So much air flow, so little chance of frying itself. I looked at my friend's '09 GSXR750 and Suzuki FINALLY put them in a place that gets cool air (left side fairing, sticking out).
 
TheRiddler said:
I love where you mounted the R/R. So much air flow, so little chance of frying itself. I looked at my friend's '09 GSXR750 and Suzuki FINALLY put them in a place that gets cool air (left side fairing, sticking out).
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Yeah, I just had to replace it so I didn't want to fry it. It's still an old tech one, so it can get hot... but not with as much airflow as it gets.
 
Wow... it does look much better. Might as well just go ahead and uh, do the swingarm too. If it were *my* bike I'd consider wrapping the forks with black duct tape to see how that would look. I'd probably just leave'em like that until I got bored some day and peal it off. But I'm ghetto'n shit.
I digress...

Badass.
 
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