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Old 12-28-10, 02:30 PM   #1
Taiden
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My winter project: El Cheapo tall bike

Hey all,

I figured this should go in the Alt Bike section since I'm not really building a frame from scratch, but if this is supposed to be in Framebuilders mods please feel free to relocate it.

I started working on this project yesterday (December 27th), so I'll make a few posts just to make sure it's current.

Also, I apologize if my terminology is off. If I say the wrong things please correct me! This is a learning process for me.

Here we go!

Last edited by Taiden; 12-28-10 at 02:35 PM.
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Old 12-28-10, 02:32 PM   #2
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I picked these bicycles up at the local dump. You gotta love free!

I'm aiming for a five foot seat height when I'm done.

Also, I'm the joking type, and since tone is lost on the internet I'll put a if I'm just kidding around

I call this Project Assplant, stolen from another member on here






Two frames and components off the other!





Frames stripped






Rear triangle removed (Sawzall action)





Top rear triangle removed





Measuring bearing races





Frame alignment tool
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Old 12-28-10, 02:32 PM   #3
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A quickie update

Here's the REAL frame alignment tool ($17 at the local hardware store, who knew they carried these things? )






I didn't want to drop money on tapered bushings, so I went this route instead. The headtube bearing races have radiused corners and the fit is very good (well, not to a machinist!) so this should work out for my first attempt. It's 5/8" steel threaded rod, grade 8 washers, and grade cheap (2?) nuts.

I may go buy some more nuts so I can lock them down before I start the welding, which wont be for a while!
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Old 12-28-10, 02:33 PM   #4
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Finally got fitup on the lower frame seat post pretty good. It was kind of tricky because the top bikes downtube has an octagonal cross section.

Here's a pic of fitup. Gap is constant all the way around, but not to a machinist!



Here's a pic of the mitering. I appreciate files and hacksaws more now.



An overview of what this accomplishes

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Old 12-29-10, 10:15 AM   #5
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Are you going to weld the seat post of the bottom bike in place or just tighten the bolt?
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Old 12-29-10, 11:02 AM   #6
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I will tighten the bolt at first, and once I see that the bicycle rides well it will get welded.
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Old 12-31-10, 11:13 AM   #7
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wanna see more...dont leave us hangin' bro !
had mine three yrs now, thinking of stripping it and really cleaning it up !
yet another project !
good luck !
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Old 01-01-11, 12:59 AM   #8
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No worries! I got another update for you.

A few words before the pictures. I have so much respect for guys who TIG weld roll cages. I can run a decent (not good) bead flat, but trying to run around a pipe with a hand amptrol only is extremely humbling. Also, people say fitup is critical for TIG and they are not lying. I thought I would get away with a 1/8" gap on some thin tubing, and it didn't work at all. I ended up just blasting it with some 6013 and that didn't make it any better.


Regardless, here are some pictures. And people wonder why I don't weld stuff for them. :LolLolLolLol:




Head tube extension all set up and ready to go.



Fit up on the seat post was terrible so I blew right through it in the middle. Learning experience. I'm going to add a support that will run parallel with it.



Head tube all welded up.



Top head tube extension weld



Bottom head tube extension weld



Fork extension weld #1



Fork extension weld #2



Extended fork



The bike almost done



Me standing next to it (I'm 6'3"). Yes the chain is on the wrong side. Woe is me. :LolLolLolLol:
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Old 01-01-11, 02:16 PM   #9
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Maiden Voyage! Plus some thoughts on the bike.

I need to add in that extra rear support and fix my chain line.

http://www.youtube.com/watch?v=hvT2F8spudk
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Old 01-01-11, 04:06 PM   #10
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A big hearty fukkinA dood from Socal. Looks good. Got me a mountain bike frame and am looking for a 2nd frame for my own tall bike.
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Old 01-01-11, 05:37 PM   #11
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A big hearty fukkinA dood from Socal. Looks good. Got me a mountain bike frame and am looking for a 2nd frame for my own tall bike.
fukkin right there guy! this bicycle is wikkid high, feel like a god damned sand piper flyin straight for a change!

haha, I got my chainline worked out I think. I had my first successful ride earlier, but it was at night so no videos. I'll snap a video tomorrow with all the updates. Thanks for the reply, it made me laugh.
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Old 01-01-11, 07:13 PM   #12
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Dude, I love tallbikes.... rock it out, man!
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Old 01-02-11, 12:34 PM   #13
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http://www.youtube.com/watch?v=xEm_esKCdAw

Last post guys... this has been a fun (albeit short) project. Next one will have more engineering behind it.
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Old 01-02-11, 12:40 PM   #14
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Dude, I love tallbikes.... rock it out, man!
This bike is so much fun. It makes me want to ride again. I'm going to build a nicer one this time, and keep this one for daring friends.
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Old 01-02-11, 08:51 PM   #15
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I bet with the seat being just behind the rear axle that thing pulls wheelies really easy. At five feat in the air you probably learn to ride wheelies without falling off.
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Old 01-17-11, 08:40 PM   #16
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Careful, tallbikes are like gateway drugs. Next you'll be riding a littlebike, chopper or unicycle in public.

They are a blast.
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Old 01-27-11, 06:17 PM   #17
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haha....love the tall bike! Be sure to post again when you start your next project!
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