Updated: Arrma Senton Mega/3S to 4S 17mm Hex Axle/Wheel Bearing Mod

thingiverse

Hi guys, Update May 19,2021: The original rear knuckle is almost perfectly neutral camber with the stock Mega rear fixed length upper links. I added 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 degree camber knuckles (i.e. File name with C1_5 is 1.5 camber). The rear suspension switches to pretty heavy positive camber in heavy cornering. I'm testing out the 2 degree version because that's a setting that has always worked pretty well for me. Note: I switched filament and the bearing cups were quite loose. A wrap of electrical tape around the bearings or some rubber type glue is a workaround if you want to use the part. I turned up the flow a bit and they work perfectly. I still drilled the pivot pin hole (you can't fix it if it prints too loose, right?). Note: If you don't have an Arrma 4S car to scavenge for parts these probably aren't any use to you. I had the parts so I made these knuckles and C-hub so I could use the 17mm hex setup. Explanation here: https://youtu.be/MHeaEBUe5gk Drifting in the rain: https://www.youtube.com/watch?v=DeeRUt9L7-4 I don't expect that this isn't the easy way to go for most people, so don't just dive in without knowing what's what. These are adapter knuckles and C-Hubs for using Arrma 4S stub shafts in a 3S car (so you can run 17mm hex and wheels). The 4S stub shafts are slightly longer than the 3S ones. This mod widens the car very slightly because I adjusted, just not quite all the way. The front knuckles are slightly off so the steering linkage is a hair off (not toed out enough). If you don't have adjustable links you'll need to deal with that. You're replacing the Senton C-Hub and knuckles with these parts. You need the 4S stub shafts and outer wheel bearings. You also need at least 1 adjustable front steering link. The fixed length camber links are still usable but you may want to adjust the camber as well. The 4S stub shafts are 8mm shafts (bigger than the 3S 6mm) but you can use them with the 3S telescoping drive shafts. If you want to run 17mm hexes and wheels in a 3S Senton it's a bit of an adventure. The Typhon Mega or 3S is actually the better way to go because it comes with the 6mm stub shafts and 17mm Hexes. Buying the parts to mod a Senton will run you about $60 cdn. You can use modded Traxxas TRX4 12mm hexes (they fit the 6mm stub shaft) and 17mm adapters but that's pretty clunky and the offset is an adventure. You can buy other solutions but they ain't cheap either. Use at your own risk. Wrench to drive or drive to wrench?