tarmo4 steering linkage tightened up

thingiverse

the original steering linkage seemed very loose, and also the ends where rubbing against my 115mm tyres when steering was locked to either side, so reduced the amount of space between linkage and printed bearing, and rounded the ends that go against the tyre.. Fusion360 file attached, I have used a 0.25mm offset (from original, so 0.5mm tighter overall round the bearing), but YMMV as per your printer... included are Fusion User Parameters (of 0.25mm at the moment), so you can just change this parameter and the model will update the space... I recommend to calibrate: first time make a Cut of the whole part, just one end to do a small quick test print... if when inserting a 3mm screwdriver thru the screw hole you can loosen the printed bearing, great, if is too loose (great printer you have!) then INCREASE the offset (from original, linkage faces move inwards towards bearing), if you cannot move the bearing, then DECREASE the offset slightly - I noticed quite a difference from 0.2 (too loose), to 0.3 (bearing melted to linkage during printing), and settled on 0.25mm Once you have calibrated, make a copy of the STL and mirror the copy in the X or Y, it doesn't matter which, and print for both sides... don't be too enthusiastic when freeing the bearings, I found that one can generate heat in there and get them stuck again