Quote:
Originally Posted by KrazyCarl92
Andrew, If you are using 2" tall tube with 1/8th" of wall and live axles in a WCD setup, then you don't have an extra half inch to drop the wheels.
The height of the tube that is actually usable in this case is 1.75" because you do not want to machine away the top or bottom walls of the tube for the bearing to fit. Then if you are using 1/2" hex like this design calls for, the bearings would be 1.125" diameter. This means that the lowest you can drop down the bearings from center without taking away top or bottom wall material is 0.3125". Assuming you already had a 0.125" drop center to begin with, this means that you would only actually be dropping the bearings (and therefore the shafts) by 0.1875". That means you have 0.6875" ground clearance with 3" wheels, not 1".
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My model uses 3/8" ID round bearings with .875" diameter.
Personally, I think the solution involves looking at the past. - Billfred [more] 
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