That is nice but I don’t know what would be best for my use, I still want something fixed, with MTB tires with a EURO BB to put a BMX or MTB crankset, a 1" 1/8 headtube some dropouts that make chain tensioning possible and if possible a non-sloping frame.
It would be an all round bike to ride roads as well as forest tracks or such. So I don’t know if an old road frame or an old MTB frame would be best. I would guess a road frame would have a better geometry to ride for long distance but it would have less advantage compared with a MTB for off road riding. I still want something that looks like what I originally posted so I would prefer a road frame but I am opened to advices from you.