Realized

Imagined:

Realized:

Full photo set.

Next steps -- Build it up (they knobby rear tire isn't staying) and ride it, then build a rack for it.  Alistair helped me with alignment today and took a few photos too.  The frame brazing is done except for a couple of water bottle bosses and whatever other brazeons I realize that I forgot.

We measured the angles today, around 71.5 seat tube angle and 73.5 for head tube angle.  Fork offset is around 30-35mm (this is a fork from a Bike Friday Family Tandem) giving a trail of about 35-40mm and flop of about 10-11mm.  Right in the ballpark.

Published Monday, July 07, 2008 3:51 AM by AlexWetmore
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Comments

# re: Realized

Hi Alex:

Congratulations - your frameset is looking great! This is a true DIY triumph. I can't wait to see it assembled.

James Black

Sunday, July 06, 2008 11:36 PM by James Black

# re: Realized

Nice! Them'r some fancy mitres! Thanks again for documenting all this, it's fantastic to see the process you've gone through.

Monday, July 07, 2008 12:13 PM by Jimmy Livengood

# re: Realized

Looks great!! How did you resolve the DT - BB shell question?

Monday, July 07, 2008 12:30 PM by Nick Marinelli

# re: Realized

The original DT was cut out and the weld was cleaned up as much as possible.  There is still a tiny sliver (cresent moon shaped) of DT welded to the bottom of the seat tube.

The new DT comes in at a shallower angle and a little (~2mm) below the original DT's cresent moon.

When I brazed in the new DT I filled the whole area between the old and new with brass.  I think it looks pretty good:

alexandchristine.smugmug.com/.../5107556_tDdQU

I feel pretty confident with it structurally, but I am curious to see how it holds up.  The DT/HT/Cargo Tube junction was actually harder, just because there was a compound miter and a very shallow angle between the DT and cargo tube.

Monday, July 07, 2008 12:54 PM by AlexWetmore

# re: Realized

Whoa! You could totally fire bottle rockets out of that thing. Better yet, a Roman candle.

Nice bike.

Monday, July 07, 2008 8:09 PM by Leaf Slayer

# re: Realized

I think you have some potato cannon potential.  It would be useful for expressing disapproval in certain situations where cars are hazardous to the cyclist.

Friday, July 11, 2008 10:04 AM by Hank

# re: Realized

What a beautiful mess.

It will be cool to see what kind of front rack you put on it.

Congrats!

Saturday, July 19, 2008 8:18 AM by beth h