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-   -   I built a frame (warning: picture intensive). (https://www.bikeforums.net/singlespeed-fixed-gear/167207-i-built-frame-warning-picture-intensive.html)

na975 01-18-06 04:54 PM

road bike geo ?

mcatano 01-18-06 05:50 PM


Originally Posted by wagathon
Are you sure about that seat tube angle being 74° ?

Overall, your frame has the look of the classic tour bikes (except for BB height), e.g., long wheelbase and chain stays, slack angles.

I'm not really sure how the angles came out in the end, to tell you the truth. I haven't gone back and measured anything since crossing the point of no return. It was supposed to be 74°, but there was a healthy amount of letting the chips fall where they may involved in the process. The fork blades might be a little longer than I had originally planned (I haven't actually checked... I just sort of eyeballed it) which might be kicking the front end up and subsequently slackening the geometry a little bit. It's a 42.5cm frame though, so I wouldn't think that a degree or two would have much effect on it... who knows though? The whole process was wicked, wicked ghetto, so I would not be surprised if things veered from their intended course.

I'll take the "classic tour bike" comment as a compliment, though. I want her to build it up with a sprung Brooks and some Major Taylor bars.

And yes, Youth, Kittyclops was an amazing little creature. The heart of a champion...

I'm really, really stoked at the kind words y'all have been dishing out. Thanks so much!

onetwentyeight 01-18-06 05:55 PM

I have to ask, how short does someone have to be to fit a 42.5 cm frame?

mcatano 01-18-06 06:11 PM

She's a little under 5'.

potus 01-18-06 06:26 PM

really excellent work. do you have plans to build a frame for yourself? if you have time definitely post something in the framebuilding forum. it could use a good kick in the ass.

AfterThisNap 01-18-06 06:31 PM

Nice, I've always wanted to build a frame from scratch but have only modified existing rides. Plus, I never learned to braze, but I can TIG a little and MIG like crazy, which happens to suck for bike frames.

The lack of an alignment jig is what get's me. Mad props.

humancongereel 01-19-06 03:01 AM


Originally Posted by mcatano
She's a little under 5'.

hey, that's a square on hipster bingo!

BlindRobert 01-19-06 08:39 AM

That is inspiring. Wow - it looks great! Lucky girlfriend.

evanyc 01-21-06 02:11 PM

yeah.... just showed this to michele. way to make me look bad bro!

"you won't even make the bed!"

jacobs 01-21-06 03:06 PM


Originally Posted by mcatano
I'm not really sure how the angles came out in the end, to tell you the truth. I haven't gone back and measured anything since crossing the point of no return. It was supposed to be 74°, but there was a healthy amount of letting the chips fall where they may involved in the process. The fork blades might be a little longer than I had originally planned (I haven't actually checked... I just sort of eyeballed it) which might be kicking the front end up and subsequently slackening the geometry a little bit. It's a 42.5cm frame though, so I wouldn't think that a degree or two would have much effect on it... who knows though?


If you plan on doing this again, invest in some calipers and a universal bevel protractor. You'll be real glad you did once you see how they integrate themselves into the building process, and I also find myself using the two of them all the time for things outside of framebuilding. I just got a Mitsuoyo UBP on superpawn.com for $40, and that only took me 5 minutes of searching to come up with, so don't be too scared off by the $200+ price tag, deals are out there.

mcatano 01-21-06 03:17 PM


Originally Posted by jacobs
If you plan on doing this again, invest in some calipers and a universal bevel protractor.

I actually do have both of those things, and you're dead on: they were extremely helpful during building and absolutely essentially during the drafting stage. It's just straight-up laziness that has prevented me from double checking the angles since completing it (and the fact that the protractor and the frame are now in two different places...).


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