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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 12-15-09, 04:38 PM   #1
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I want to build a completely stupid bike like this

Alas, I cannot weld (at least, not yet). But if I ever can, I'm going to waste some precious steel/talent on something as ridiculous as this thing.


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Old 12-15-09, 04:47 PM   #2
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Holy bad chainline!
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Old 12-15-09, 04:47 PM   #3
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What's the best tire to use for skidzzz?
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Old 12-15-09, 04:53 PM   #4
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there's a guy locally that built a bike that has two 14" car tires on it. he fabricated the whole thing outta square tubing. Don't have any pics though
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Old 12-15-09, 05:06 PM   #5
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So after you build it where are you going to ride it?
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Old 12-15-09, 05:15 PM   #6
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Into the sunset....
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Old 12-15-09, 05:30 PM   #7
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So after you build it where are you going to ride it?
Pretty much anywhere I want to.
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Old 12-15-09, 05:57 PM   #8
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I'd put the giant tire up front, but that's just me. I think that bike is sweet. Hell, if I ever get my hands on a TIG of my own, and space to store a stupid bike, I'm building myself one.
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Old 12-15-09, 06:04 PM   #9
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you guys are idiots. that bike is obviously a purpose-built drag racing machine.
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Old 12-15-09, 06:09 PM   #10
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Alas, I cannot weld (at least, not yet).
You should learn to weld. I made it 22 years welder-free but I bought one 2 years ago and it is awesome. I've welded a couple front bicycle racks, a trailer hitch extension to make my Saris Themla 2 rack work w/ my wifes car.

the most ridiculous bike thing I welded was this:


It rode terribly and it was soon destroyed.
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Old 12-15-09, 06:10 PM   #11
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I wonder how you'd brake with any efficiency at all. FBO would probably work pretty badly due to all the rolling weight in the back. (in reference to the original post)

Hey Ryan, that thing's pretty cool.
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Old 12-15-09, 06:47 PM   #12
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Alas, I cannot weld (at least, not yet). But if I ever can, I'm going to waste some precious steel/talent on something as ridiculous as this thing.

[]
welding steel isn't very hard. Get access to a mig welder and practice for a while on some scraps.
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Old 12-15-09, 06:47 PM   #13
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There was a video posted in Alt Bikes years ago that showed a bike like that. Took a bit of effort to get it moving, but was unstoppable once it got rolling.
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Old 12-15-09, 07:54 PM   #14
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welding steel isn't very hard.
Sticking two pieces of metal together isn't hard. Welding well is difficult and requires a lot of supervised practice.
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Old 12-15-09, 08:19 PM   #15
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Sticking two pieces of metal together isn't hard. Welding well is difficult and requires a lot of supervised practice.
My shop teacher had me teach other students to gas weld and also arc weld. I suppose I was kinda good at it. But I want a wire feed when I build my workshop.
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Old 12-15-09, 09:17 PM   #16
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Sticking two pieces of metal together isn't hard. Welding well is difficult and requires a lot of supervised practice.
x2

when asked if i can weld i always reply with "i can stick metal together"
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Old 12-15-09, 10:02 PM   #17
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You should learn to weld. I made it 22 years welder-free but I bought one 2 years ago and it is awesome. I've welded a couple front bicycle racks, a trailer hitch extension to make my Saris Themla 2 rack work w/ my wifes car.

the most ridiculous bike thing I welded was this:


It rode terribly and it was soon destroyed.
lol, two front aerospokez
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Old 12-15-09, 10:09 PM   #18
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check out the stuff over at AtomicZombie.com

A few folk making bikes like this.
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Old 12-15-09, 10:30 PM   #19
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that is the prototype for the new Pugsley, it was too expensive to do both wheels so one will be fine for the testing.
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Old 12-16-09, 12:18 AM   #20
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My shop teacher had me teach other students to gas weld and also arc weld. I suppose I was kinda good at it. But I want a wire feed when I build my workshop.
It's pretty hard to gas weld, and it's even harder to get good penetration. Wire fed or MIG (metal inert gas, or GMAW gas metal arc welding for the really anal) is really easy, looks great, but is hard to get good penetration with. You want real fun with welding, get a TIG machine. Expensive, but good lord, there isn't much a skilled TIG operator can't do.

As far as welding a bike, it doesn't matter too much, so long as you overbuild a little. I've carried over 60 pounds on a rack I MIGed together out of mild steel tubing. It held up admirably. So long as you don't mind it being heavy, just about anything could do.
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Old 12-16-09, 05:25 AM   #21
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Expensive, but good lord, there isn't much a skilled TIG operator can't do.
This is NOT my handiwork but for example- here are some razor blades that were welded together. For those who don't know, the thinner metal is the harder it is to weld. This dude welded razor blades without burning through. That is hardcore.

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Old 12-16-09, 07:17 AM   #22
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I would imagine the alt bike subforum has lots more advice on welding.
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Old 12-16-09, 08:45 AM   #23
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It rode terribly and it was soon destroyed.
Needless to say with such a rake...
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Old 12-16-09, 10:47 AM   #24
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This is NOT my handiwork but for example- here are some razor blades that were welded together. For those who don't know, the thinner metal is the harder it is to weld. This dude welded razor blades without burning through. That is hardcore.

Try it with ALU



Not my work.

Tig welder is on my list of stuff to buy, but pretty far down, way too many projects right now and I don't need to weld any Aluminum, so I get by with a stick welder.
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Old 12-16-09, 11:24 AM   #25
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My roommate and good friend welds for an armored truck company for a living.

He wanted to learn to weld, so he bought an arc welder and we made a bunch of 4x4s using that thing. Horrible.

Then he got a MIG and used that thing daily for more rat rod and 4x4 fabs.

Then he got a TIG and has since mastered working with soft metals.

He never learned from anyone, he just figured it out with patience and literature.
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