[JHSmentor]

Ah, I was wondering if anyone else was having this problem as well. I talked to AndyMark and they do not have a longer output shaft that will work with the ToughBox. Two ways to resolve this if you want an axle that goes all the way through:

1. connect the output shaft to an axle using a shaft coupling. There are several models available at Mcmaster and Grainger or other places like that. You can choose from a ridgid coupler or a flex coupler that would allow for some play or misalignment between the shafts (be careful with torque ratings on these).

2. the output shaft has a 1/4-20 tapped hole in the end (1/2" deep). We are using a Grade 8 1/4 - 20 bolt through our outer wheel plate (with a bearingin the plate) as our axle and it will screw directly into the output shaft. The bolt will have spacers over it to take up the remaining space within the wheel center bore. Then we use the keyed Shaft HUB that AM sells to actually drive the wheel from the output shaft.

We have not tested option 2 under load or anything but I belive it will be strong enough. Without this bolt, the wheel would essentially be supported by the toughbox which is also plenty strong in most cases I think.