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Old 09-12-2010, 12:10 PM   #151
AKjeff
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I love the frame work and mods.

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Old 09-12-2010, 02:38 PM   #152
anonny
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This build is tickling my fancy, would love to do an old Goose.
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Old 09-12-2010, 03:21 PM   #153
Loadedagain OP
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Quote:
Originally Posted by Jinx
Well, as feared, this project has ground to a bloody halt...get on with it, Laddie
i know i'm a slow bastard, but i'll try my best to get it done a wee bit more efficiently ... the nickel sure would be cool... doesn't lend itself too well to future modifications though. i'm leaning toward a snazzy silver colour done in powder coat (with a quart of enamel to help my habit of welding on fresh paint).

oh... added the support tubes up front this morning.



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Old 09-12-2010, 08:23 PM   #154
Nessman
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Eventually I'll get around to dis-integrating my brakes. When I do I'll make a bracket from this pattern to mount a rear MC under the swingarm.

The "center" punches in the two big holes are 1.9" apart for scale reference. It bends on the crease.
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Old 09-12-2010, 10:53 PM   #155
Jinx
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Quote:
Originally Posted by Loadedagain
oh... added the support tubes up front this morning.
I hope you are as happy with the way this is going as your audience is

PS - Ain't straight tubes wonderful things?
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Old 09-12-2010, 11:01 PM   #156
Misery Goat
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Damn, nice work, Colin.
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Old 09-13-2010, 02:34 AM   #157
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God....

I hope you saved that fairing. You're gonna want it later!
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Old 09-13-2010, 02:54 PM   #158
Loadedagain OP
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Quote:
Originally Posted by Jinx
I hope you are as happy with the way this is going as your audience is

PS - Ain't straight tubes wonderful things?

funny you say that. i really am enjoying this project. this thing is going to be really cool when it's done... i hope. there are some concerns about getting specific parts in time. unfortunately that stuff is out of my hands.

someone on another forum asked me how i go about making some of the parts i put on the bike. it's a little more than a bandsaw and file! i made up the trans/engine mount this morning. here's how i did it

1) after dreaming up what i wanted to do in my head and on a cocktail napkin i drew it up in autocad. i know... there are way cool 3d programs that are so much more efficient... simple 2 dimensional parts get simple 2 dimensional drawings.



2) once it's drawn i overlay a cutting path, which you can see in the blue and red lines. the blue is the main cut pat, the red is a second "release" path as i am going to hold the metal in a vise and don't want to just chop it out of its holder right away.

once that's done i have a little piece of software that writes the code. the code is refereed to as "g-code" and is a simple linear instruction set - g0 means go straight as fast as you can to a coordinate x and y. g1 is linear cutting speed, g2 is a clockwise circle, etc, etc... m codes are motor codes. m3 and m8 turn the spindle and coolant on. for those in the know just ignore 12fpm! i didn't say i was fast!



once we have the code a piece of aluminum goes into the milling machine vise. set zero in x, y, and z and run the program... oh yeah. make sure you have the right cutting tool in the mill. nothing sucks more than programming for a 3.8 mill and running the program with a 1/2". i love machining my vise!

and we're off!



machine the trans end, then some pockets, then the engine end... then slip in a centre drill to mark the holes... then my favorite part. releasing the part from the pieces holding it in! i aint gonna show you that shit show. here it is just before...



then toss the bad boy up in the drill press and poke the holes through where the cnc c-drilled them and we're done! all it needs is finishing. it could be polished, or annodized, or painted... i dig annodizing in matte colours so i'll bead blast it later, then send it out to the annodizer with a bunch of other stuff



then it's time for a trial fit on the bike! here is that chunk of aluminum in its new home for the first time! cool. it actually fits! will weld some bosses on the top cross bar later to hold it vertically.



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Old 09-13-2010, 03:08 PM   #159
Nessman
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Old 09-13-2010, 04:08 PM   #160
crazydrummerdude
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Why would you take a CNC'ed part to a drill press? Program those holes in, too!

Also, if you used a bigger piece of stock (so the vice wont collapse), you might be able to come back by with an endmill and just drop the part out of the bottom. Actually, that's exactly what I did with the last thing I CNC'ed.

/armchair quarterback
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Old 09-13-2010, 04:12 PM   #161
Loadedagain OP
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i know i know... no tool changer so the time it'd take to change to a drill when it was already c-drilled? drill press i go! ... a smart guy could have made the part in less than an hour with a jig saw and drill press.
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Old 09-13-2010, 06:47 PM   #162
radguzzi
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Wow...



And it is difficult to get me speechless.


Most excellent work Loaded...

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Old 09-13-2010, 08:04 PM   #163
fishkens
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Neato. Like I said, thanks for the educatin'.

Keep up the great work.
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Old 09-13-2010, 10:53 PM   #164
kbasa
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{pedantic asshole}
I'd put a radius on those edges.
















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Old 09-13-2010, 10:59 PM   #165
Loadedagain OP
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Quote:
Originally Posted by kbasa
{pedantic asshole}
I'd put a radius on those edges.



settle down buttercup. they'll be softer once the part is bead blasted.
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