base on the pedal you use, I believe you when you say the bike was not ridden "seriously" when it broke ... ;-)
Yep, exactly. It's had
maybe a total of 6 rides under a 120lb woman and a 150lb man - the last ride with the plastic flat pedals.
but if the seat post went pass the section where it broke, that means the seat tube has room for the post to "move around", and enough so that it cracked site tube.
I'm sorry, that just doesn't make any sense. If the seat post is inserted far enough into the frame, especially as the frame is reinforced at this point, then there is no reason whatsoever for the frame to have broken here except defective product.
Just follow every single recommendation of this book
http://www.wheelpro.co.uk/wheelbuilding/book.php
I can agree with that. I've been building wheels since the early 90s (yeah, I'm old, what of it?
) and got that a while back. Thought it was probably the best book I'd seen on the subject.
Very good! I have been lazy and just used the frame/fork to build the wheels. It still worked but a stand is definitely better. You will also need a dishing tool. I've been VERY lazy on this one too, but I really like this solution. 2 mugs/glass and some coins :
LOL - that's brilliant! That stack of coins might be worth as much as a dishing tool, but at least then you can still use them to buy more stuff.