Waste gone wild - making a 650b allroad touring bike at home

I had a kind of bicycle in my mind for quite some time now that is not quite easily available. So i have to make it myself. Collecting waste has to be good for something so it started with a ladies 28" trekking frame and the down- and headtube of a 90's mtb frame. My goal was to have a bike with a looong headtube to avoid spacers and overly erected stems. Zero saddle to bar drop and short effective top tube so it can be grabbed in the drop of the bars more often and gives a very relaxed position on top and hoods. The main measuring tool are my eyes, simply because i like how focussed and careful you have to be.

Specs:

clearance for 2.1x650b and 48x700c
final fork will be cheap aluminium, 415mm a-c, disc tab and rack mounts
...

More, MORE!

Good thread, are you sure you want to use alu forks? Steel would be more suitable for touring as it absorbs shocks better and there should be plenty cheap ones around.
edit: forgot that it needs disc tabs

I have searched around for some time and did not find anything except the 28" version of the surly disc trucker fork. The one i bought was 40€, it should be good enough to try it out.
https://www.cnc-bike.de/product_pix/trekking_alu_disc_only.jpg

Fair enough, there's steel ones on ebay every now and then. Had my eyes on these but I realised that I have no need for them: http://www.ebay.de/itm/1-Zoll-Starrgabel-f%C3%BCr-Scheibenbremse-Ma%C3%9Fanfertigung-gemufft/253118055195?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

Just realised that you need 1 1/8 which makes things easier: http://www.ebay.de/itm/Starrgabel-28-Zoll-Trekking-Gabel-1-1-8-Schaft-Schwarz-V-und-Scheibenbremse-/361400838135?hash=item54252b27f7:g:VEMAAOSwdvpWDoGF but I don't want to derail your plans, alu should be fine :)

I love what you're doing here. I'm not writing from any position of true knowledge but I'd be happier with a brace between the seat stay and rear fork as per @bankiren https://www.lfgss.com/conversations/291519/

That bike was one of the reasons i started this. There will be a braze but i didn't decide what to take. I wanted something fancier than a straight pipe.

430mm a-c is too long for my liking. Makes angles too slack.

Yeah this looks great!

Aaaw yiss.

Forks have arrived. They feel pretty light, but the eyelets and even the dropouts are all wonky and the wheel sits crooked. I found another even nicer solution locally.

It is starting to look less frankensteiny. Using key files is definitely not the fastest way to go...

This is wicked, part of me kind of likes it when it had a double top tube, but obviously the weight would be a downside!

Your poor taste is a downside

Your a downside

Super cool project!

Casual racism is not ok

This looks great!

Just realised the 2 bottle cage bosses on the Downtube (now the new toptube) are you going to be using those for anything? I assume an actual bottle there might clash with the knees a bit.

My Marin Mount Vision has mounts in that very position. Unless you're knock-kneed it shouldn't be a problem. Water on the knee?

Time for some last finishing before paint.

Fantastic. I love crazy DIY projects like this.

The frame is painted. Rattlecan job to match the homemade theme. It's just some fettling and purchasing small stuff away from being finished.

That's ace, proper homebrew!