A compact, yet effective way to get two XL-Motors to power a single two-side-access axle with geared-up speed.
About this creation
I was looking for a way to double my current WIP by using a second XL Motor for the wheel powering. Looking for methods to easily mount two engines in a handy way without using up too much space, I came up with this mechanic... well, I'm sure someone has before really, but I haven't seen it being used at all yet, so I think it might at least be useful for someone.
As described in my introduction, this construction addresses a bunch of problems when trying to fit two motors in a single car model:
As you can see in both the picture and the provided LDD file, all of the gears in total take up a space of 5x5x3 units, which is pretty small in comparison with everything else I could come up with. A downside is the lenght of 17 units.
The driven axle- after being geared up - is already in driving direction, meaning it can with the addition of a single gear directly be used to drive one or two differentials.
The high reliability of this system definately is a plus: The gears hold themselves in place, the engines are connected with 7-unit-long beams on the top and bottom, as well as connected to the main beam with 4 pins each.
Additionally to all of the above, an efficient 3:1 transmission with the power of two XL Motors (14.5 N.cm each) behind it make for a fast way to use these strong engines. I was worried that the gears might block themselves occasionally, but various tests have shown that the whole system runs perfectly smooth and clean.
Please tell me if you have any ideas how to improve this!
Pretty good design! I'd recommend to help the gears be more sturdy to move the #2 connector one module closer to the motors and to replace the 12t double bevel gear and half bushing with the thinner 12t bevel gear.
This can be interesting building it into a 8×8 vehicle with central torque tube and independent suspension (like 8×8 Tatra trucks) between the two 4 wheel unit. It could maintain very low profile and Center of gravity, resulting excellent maximal tilt angles.