I was asked by scalecrawler18 how I build my axles in detail. So I tried to give as many details to end with an axle width that lets your wheels tuck in nicely under a Clod buster body and anything wider (and the Clodbuster body is very narrow!).
Finding the right width axles took me as a newbeee forever since I wasn't familiar with any of the sizes in the beginning!
First I tried TLT axles, because everybody was saying they were the narrowest on the market. They are not. In fact, in the end they were just a tad shorter than axials. Didn’t narrow the width enough for the clod body at all.
I finally took LOSI MRC axles (the Vaterra Slickrock ones are exactly the same by the way!). They are narrow. Very narrow. Tooooo narrow! And, they seemed flimsy for my custom build which I wanted to drive too.
For one thing, everything on the MRC axles is smaller. The shafts are smaller, so you cannot hook up a strong drive shaft right away. The wheel axles have tiny pins which would have too much slack on the hexes I wanted to use. And they are too short for my wheelbase. And, last but not least, the link attachments were too small and too close to the center - your shocks would be on the inside of the chassis frame.
I still had the TLT axles and messed around with them, finding out, that their axles acually fit into the MRC C hubs lengthwise and would give me the right wheelbase.
But they created a new problem: They are slightly thicker and wouldn’t fit the ball bearings of the MRC which were smaller.
At that time I just had bought the Gmade sawback which was sitting unassembled on the shelf. But it came with ball bearings that did fit perfectly! I ordered two packages of these in the bay:
Team Durango Ball Bearing 5x8x3mm (4) TD601022
So I had working axles - and finally the width I wanted. They still weren’t attached to the chassis though. I cut off the original mounts of the housings and ordered some MRC shock/link mounts from DLUX. And I needed a drive shaft, that would attach to the tiny diffs. The original MRC shafts are way too short. So, I got me some traxxas plastic drive shafts and Traxxas differential output yokes which have a smaller mounting diameter than for example the axial ones. I have to mention, that I run a MRC tranny too! Otherwise you would have to build your driveshafts with one end being 5mm and the other 4mm output, which is a pain and very costly (there is a solution with this: MIP online sells these driveshafts: MIP Spline CVD™ Center Drive Kit, Axial SCX10 #10145. This would mount to a axial tranny. For the axle end you would have to get smaller CVD hubs. They sell one for Losi Mini RC, part #09103).
By the way: If I want 2 or 3mm more axle width now, I only need to change the hex adapters - thats it
I was afraid, that a bigger motor and bigger tranny wuld put too much stress on the small axles - and they did. Stripped the gears on the first run… So, to add more strength, I changed the knuckles and hubs to aluminum and all the diff parts to metal. The original Losi MRC motor was very slow. Worked fine, but no whellspeed at all. For my Fall Guy build I got me a Losi RX280 Motor which is a lot faster now.
Here are some pics - sorry for the quality, just used my phone:
Here you can see the DLUX link mounts (and the shaved MRC housings). Also the aluminum upgrades for more strength:
Notice the Traxxas shaft and yoke - they have to be smaller than on regular axial axles. On this picture you might spot some spacers behind the wheel, that you actually do not need when you use hex mounts that have a clamp screw and don’t move at all:
For size comparison: TLT axle stub (mounted) - See the position of the pin? That`s the five millimeter missing! And in front the original (much smaller) MRC axle:
And in this picture you see how everything lines up: the shocks are further out where they belong, mounted to the DLUX mount on the bottom. The steering radius turned out to be very good. If I used thicker shocks they would have rubbed on the wheels I guess. Still need a metal steering link!
Thanks for reading. Hope that was helpful for anybody ;-)