Bent top tube?
 

Hello. I live in Norway (sorry for my bad english), and I am new to this forum.
I have recently bought a 1985 Koga Miyata 912, and the bike is ridden only 50 kilometers.
Everything on this bike is in really good condition, but i have noticed that the top tube looks a bit bent where the tube meets the lugs. The down tube is completely straight, and there is no signs of cracks in the paint on the top tube.
I can't figure out if the top tube actually is bent because of being used or if it is supposed to be like this.
Maybe some of you guys can take a look at the pictures i have attached and give me your opinion?
Thanks!
Magnus Aftret :)

OCD? the bike can be alignment checked, a horizontal top tube need not be perfectly horizontal..

and it is a mass produced factory bike that is not brand new ..


you should have seen the first years of Cannondale frames.




:innocent:

Haha, yes, I think i have some sort of OCD when it comes to bikes.
But thanks for the answer. Think I just ride the bike and don't worry about it then :)

This kind of offness could be the result of a heavy front end impact. But most riders will remember that:) If this is the case the front end of the head tube and down tube will likely shoe greater "bending" and I don't see that.


This could have been the way the frame was right from the start. Do we really know that this is a new situation or just the OP's awareness that's the new element? Many times data without context is not really informative and is distractive.


Ride the bike and keep an eye on the frame and handling. Don't try fixing something that's not really a functional problem. Andy

Good move. Look at your bike less; ride your bike more.