May hold the engine in the hole of the aluminum itself like never before .. (which may have its variations ) and in frame with 45x45 with 45 sleepers for 90 ... The measures are all correct since the screws have to be sized more correctly 45x45 made to enter nema motor 17 . the vacant hole , thus can close with a colorful cover over abs to become more aesthetic and beautiful ... To attach the bike is a piece abs with the screws holding it in 4,5 x4 , 5 printed inside and tight across the column as it is German and has a hole for it and the size of his head lower than the pulley chain sprocket or smaller than the thickness of the reel ... or all aluminum flat cut and welded. I'm Brazilian and google translate because I do not know English ... Thanks ! Of several measures to make aluminum example 25x25 with 25x50 etc ... I hope you enjoy and use this idea ... And I hope to contribute to the group of Rep Rap here and there from Brazil and the world .... And if you like the idea is to be used .... ( get to work ) And I would like to help me assemble my ... because I'll need some tips to ... since I do not know anything about rap rep ... The cart is to be used directly in the profile and the strap line or holding behind ... Ispirado Cerberus Steve Graber who had at first an iron bar in the foot and then with abs ... And then like the Kossel also in ABS ... Ricardo Rocchi ...