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Old 07-24-2012, 02:48 PM   #91
tmotten
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Brilliant. Wish I had a workshop like that.

tmotten screwed with this post 07-31-2012 at 02:36 PM
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Old 07-25-2012, 02:26 AM   #92
LukasM
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Fantastic workmanship!

I am not going on my soapbox about starting with an X-Ch again because then Taco might get pissed.
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Old 07-25-2012, 06:32 AM   #93
Kawidad
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Quote:
Originally Posted by kubiak View Post
nice subframe!

It's look pretty good mounted onto a TW hybrid............ Just say'n.............
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Old 07-25-2012, 07:36 AM   #94
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It's look pretty good mounted onto a TW hybrid............ Just say'n.............
yea it would!
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Old 07-25-2012, 03:42 PM   #95
tmotten
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Fantastic workmanship!

I am not going on my soapbox about starting with an X-Ch again because then Taco might get pissed.


I've actually got something else (read better ) on the way. Cant wait.
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Old 07-25-2012, 05:39 PM   #96
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2nd, 3rd 4th subframe

Sorry to let all you blokes down but with the work involved, there will be a second subframe for my other Dakar, but beyond that I can’t see any more production
I am surprised in the time it is taking to make this thing! The main frames came together quickly – it is all the little brackets and taps to hold everything else on. I have no idea how many times I have taken the dam thing on and off the bike. I doubt that there would be enough orders to make up a jig, and even then, the final cost would be prohibitive.
But am happy to provide any details, drawings (when I eventually do them) for those taking on this project themselves.
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Old 07-25-2012, 05:54 PM   #97
LoJack
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I hear ya! Lotsa back and forth.

I made an aluminum one this winter that I scrapped. I botched a weld on one of the main mounting tabs and though I could have fixed it, and made it stronger in the process, the $200 it would have cost me to heat treat it made me think about cro-moly. I'm getting better at welding aluminum, but I am very comfortable with steel and thought this made more sense for the first go.

So I made this for about $50 of 4130:


It weighs a bout 5.5 pounds. Yeah, kinda light for steel, but I am not throwing away my old subframe yet.

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Old 07-25-2012, 06:18 PM   #98
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Very nice - 2.5kg's is light! Love the work - What section of 4130 did you use? Did you TIG weld or braze?

Any more pic's of this or other F650 fabrication projects?

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I hear ya! Lotsa back and forth.

I made an aluminum one this winter that I scrapped. I botched a weld on one of the main mounting tabs and though I could have fixed it, and made it stronger in the process, the $200 it would have cost me to heat treat it made me think about cro-moly. I'm getting better at welding aluminum, but I am very comfortable with steel and thought this made more sense for the first go.

So I made this for about $50 of 4130:

It weighs a bout 5.5 pounds. Yeah, kinda light for steel, but I am not throwing away my old subframe yet.
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Old 07-25-2012, 06:42 PM   #99
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It's 0.875"x0.058" tubing, TIG welded. Don't really have any other pics right now. Had grand plans for a fairing mount and was working on a swingarm drawing but work and laziness got in the way.

I was unable to find a suitable extrusion for the swingarm. Anything that was close in section had sharp edges inside and out. Thought that was a real bad idea so a friend helped me work on a machined arm that had a lattice work of sockets milled out. Looked real neat, but would have ended up being super pricey. So that's on the back burner right now. And I'm currently searching for an alloy swingarm that would bolt on and have some ideas of what might work but haven't found any yet.

But it's gotten me motivated to go back to school and learn some mechanical engineering stuff. Starting with tech school since it's 1/4 the cost, 1/2 the time, and get's into the core what I want to learn.

This is what I am currently working on, a longtail cargo bike with platform racks front and back for a carpenter friend that rides his tools to the job site:


And that's not my work bench. Mine is MUCH messier...

LoJack screwed with this post 07-25-2012 at 06:59 PM
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Old 07-31-2012, 07:43 AM   #100
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All the yahoos in the steel bike thread would love some pics of that. You should post some over there.
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Old 09-05-2012, 12:11 PM   #101
TobyG
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Any updates?
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Old 09-05-2012, 04:39 PM   #102
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Updates

7000km's from home in Vietnam picking up a new ship - this build will take some time!

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Any updates?

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Old 09-06-2012, 05:29 AM   #103
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Vietnam





















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Old 09-06-2012, 02:22 PM   #104
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No worries, take your time :P


I just happened to wonder wether you cancelled that project or whatsoever might happened :)


Looks like you are having a good time in Vietnam, anyways
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Old 12-10-2012, 05:20 AM   #105
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Home again

Home for a bit - trying to finish off this project!

Now have the dash and lights all mounted - very happy with the result.











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