TONKA MIGHTY DUMP TRUCK WHEEL (970 type)

Here is my remix of nathanb87's (original here: https://www.thingiverse.com/thing:6359668 ) very good Tonka wheel for the Dump Truck. The tread resembles the 970 wheel tread quite well. I could finally replace the broken and missing rear wheels from my childhood Tonka Migty Hydraulic Dump Truck and see if my children are up for playing with it. I edited the original file in tinkercad and blender. It is evident the original file has a nicer transition from tire sidewall towards the hub. Mine is flat. The dimensions I needed (which differed from original file) were 117,5mm on the outer rim, 46mm thickness of the tire, 42,5mm diameter of the wheel hub, 27,5mm depth of the tire at the point of contact with wheel hub. This is significant since the original wheel hub has tabs to retain the wheel. THESE MEASUREMENTS HAVE NO TOLERANCE, which means I had to heat my prints with a flame torch and I also heated the original hubs in hot water prior to final fitting. So, either resize slightly or fettle as I did.

GCODE FILES (USE AT OWN RISK): I split the model in prusa slicer and added 4 pins which I didn't use since I aligned them poorly. I did however create a connector ring to help center the parts as I glued them.The wheel halves were printed with 5 perimeters and no bottom layer. THE CONNECTOR RING IS MODELED AFTER PRINTING THE MAIN TIRE HALVES I also inserted a note for posterity :D All were printed in PETG I have included the gcode file though it might only work on the Core One.

The photos show assembly and wheels installed on rear axle and showing the original (possibly over half century old) wheels I hope these work for others also.

Category: Construction Toys