Hello/inappropriate drop outs?

Ride it singlespeed for a while. Jump it off footpaths for a while. Throw it at brick walls. You know, the usual kind of bike testing we do..

IF it breaks, it probably not gonna snap off just like that, I'll probably see some cracks first, then hopefully only one side breaks before the other. I mean, they wont snap off at the same time. I should also say that Im not planning to ride this bike in terrain, If it doesent break when I ride down a curb, Im happy. Im gonna ride it unpainted til it gets warm enough to spray outside, or til I find someone who can do some powder coating for a small amount of money.

I've showed the bike for a few friends (theyre all working as civil engineers and hopefully they know a little bit about materials etc.) and they think it will work.

And just to show you all how strong it is =)=)=)=)

http://www.youtube.com/watch?v=vW_HrmS-Oeg

haha

Exactly. give it ago. Post when you have built it up.

I like the music you make!

Nephs

I've showed the bike for a few friends (theyre all working as civil engineers and hopefully they know a little bit about materials etc.) and they think it will work.

And just to show you all how strong it is =)=)=)=)

http://www.youtube.com/watch?v=vW_HrmS-Oeg

haha

Nice one, beat it out of track to boot.

Civil engineers dig holes and build bridges.

they don't make bike frames.

I hope it works out for you, but enthusiasm is no substitute for knowledge.

RPM
...
I hope it works out for you, but enthusiasm is no substitute for knowledge.

Aye, but you're a long way from getting that knowledge if you're not enthusiastic.

good luck... be carful, have a break and a helmet.

"be carful, have a break" haha was that an intentional warning? You're brilliant linguist and don't know it chris :)

i've must have translated the title wrong, mechanical engineers migh be a more suitable title. however it wont help me out when im lying on the street with broken bones and spokes.

but as the brick said, some of the old drop outs had to be left on the "upper" tubes, and theres no couple force (it can at least be neglected) on that welding. The downer ones has about 1,5-2cm2 contact with pretty thick metal and are welded "around that", in lenght direction approx 15mm. kinda hard to explain.

this is the same drop out shown from both sides.

my biggest concern, however, is that it looks like shit with the two angles meeting. I should have just milled my own ones and made them bigger and "longer".

I wonder what Im trying to do here.. Am I trying to convince you all that it actually is going to work? -well that wont make them stronger, thats for sure..

thank you for all your opinions. Im keeping them all in mind when Im going out for my first test ride. and I'll wear a helmet, no brake thou, the frame is completely stripped. I should also say that this frame was a half decent mtb frame 10 years ago, and I was just about to throw it away or sell it for six pack of beer when I came up with this idea. the drop outs costed me about two packs of smokes, and here I am sitting inside on a friday wich means I already compensated economically for this project.

Im enthusiastic and gaining knowledge (and experience) everyday, it's great having you here to teach me!

Witcomb dropout replacement.. looks a bit different.
I'd ride yours (carefully) for a while just to see what happens. But for a regular ride I'd want something I'm more confident with.

Nice rescue work.. but CAnt you at least put a brake on the forks?
and what frame was it out of interest?

yepp thats how I was planning to do it. I'll do it more properly next time.
Just ordered a set of Dura Ace track hubs, wont afford a new frame in a while, at least not until the king of sweden decides to pay out study grant again.

hippy, sometimes i know all about it....

hammer time.

the fork is stripped too. it was a swedish "Cyclepro".
what good will a break do anyway? If it breaks down a hill i think the friction against the tarmac will do fine as a break..

this will still be my regular ride, and no I didnt weld those drop outs myself:

what does you engineering company make?

and how can i avoid being killed by it

Sky Lifts

please tell me you dont supply American resorts.

nice bike (sprit) by the way.

no i dont do sky lifts.
im not working as an engineer... im studying. The guy who did the welding said he was experienced, he's becoming an engineer in six months. We did the welding in the workshop at uni. the two I showed it for actually works for saab aero, theyre working on "JAS 39 Gripen". if you dont want to get killed by it just dont mess with the countries that use those planes in thier air force. shouldnt be too hard i guess. But of course these guys have no clue about bike frames so Ill just grab my coat and call a cab... just forget about it. I just wanted to tell you that people have seen it and thinks it should work fine. them beeing engineers or not might not be relevant, i dunno. but im not expecting you to ask for the welders number

edit: just to eliminate any chance of misunderstanding, the guy claimed to be a experienced welder, not experienced engineer.

this all feels irrelevant for some reason.. the drop outs still gonna look the same

In my experience the welds look okay, although a little industrial. i.e. they've fused with both materials but you can tell which side they were done from. For the loads you'll be putting on these as a road bike, you should be okay....although you can never tell with welding if you've mismatched the materials.

Get the job filed down, you could then fill it (bodge) to blend the curves and spray/powdercoat before the join oxidizes. It will look as good as most rescued frames.

Nephs no i dont do sky lifts.
im not working as an engineer... im studying. The guy who did the welding said he was experienced, he's becoming an engineer in six months. We did the welding in the workshop at uni. the two I showed it for actually works for saab aero, theyre working on "JAS 39 Gripen". if you dont want to get killed by it just dont mess with the countries that use those planes in thier air force. shouldnt be too hard i guess. But of course these guys have no clue about bike frames so Ill just grab my coat and call a cab... just forget about it. I just wanted to tell you that people have seen it and thinks it should work fine. them beeing engineers or not might not be relevant, i dunno. but im not expecting you to ask for the welders number

edit: just to eliminate any chance of misunderstanding, the guy claimed to be a experienced welder, not experienced engineer.

this all feels irrelevant for some reason.. the drop outs still gonna look the same

i was joking mate, i'm new to the world of frame building as have only built one frame, but i did spend a lot of time with some one who has been building bikes for almost 40 years asking all the questions i could, and from what i know and learned from him i think you did a lot of bending. the welds look fine just do not sand them, though you probably know that being an engineer.

if it breaks you learn what you did wrong, if not then you learn what you did right. seriously props for trying this.

imho it will break soon, but im a pessimist.

two days, one crash and a few curb-drops. -I have a good feeling about these drop outs.
paint is coming. or maybe i should just get me some of those "what a..."-stickers.

stop running into things...

nice nipples btw