So the entire frame is welded! I'll show you some picture below.
The coaster arm bracket is welded the wrong way around...... but luckily I can still use it without cutting it loose again.
And the "chainstay bracket" stiffening looks a bit rough, that what you get if you decide to stiffen that bit afterwards... but the welds are very solid. I am really happy how it turned out. It is meant to a cool functional apocalypse bike, not a showbike, (just a little bit ).
Last thing to do before a powdercoat:
Round some corners a bit with sandpaper and file. And drill a hole for the bicycle stand. About an hour of work left.
Rear wheel testfit and check.
The wheel is mounted to the full front of the horizontal dropout. So I think I can leave the bracket as is!
Bracket to mount the rear rack assembly. I personnly love how it all fits!
This morning I took the frame to the powdercoater! Will be ready this/next week depending on the guys mood
But: RAL4007 was not available anymore. There were multiple reasons for us both to choose something that was in-house.
Now it will be: RAL 3011 - BrownRed
Frame and fork in my car.
Colour sample on the spot.
As a rookie frame builder I made the mistake of not pressing/holding the bottom bracket while being welded...
This resulted in a slight oval bottom bracket (0,6mm / ¹/₃₂ inch).
I solved this partially by making a presstool that pressed it (from the inside out) passed the "material elastic limit".
This was quite hard, because CrMo steel is quite tough/springy.
I tried the bearing cups and measured the bearing races. It is OK now.
You learn a lot by building this stuff.
Can't wait for first assembly next week.
What kind of assembly grease do you guys use?
Do you use different kinds of grease for bearings/assembly etcetera?
I bought and am currently I am very content with:
Assembly of static parts/between contact surfaces: Klüber Nosol GBY 2.
Bearings: Klüber isoflex topas nca 52.
Keeping stuff clean and protected afterwards: Fluid Film ASR 1 spray. (based on wool grease, so not chemical or corrosive).