Upcoming Castle Outrunner Motors

[sikeston34m]

Originally Posted by MetalMan

Never did make anything out of it because I never came up with a practical application. Even though I really enjoy working with outrunners (you know how much I've done with them), I prefer using inrunners due to their greater performance in a smaller package.

However, my XLB is still looking for a suitable motor and it has a center diff... Thinking something like a 4025-4035 might be suitable. The diameter is my only concern, because the motor mount was designed for a 45mm maximum diameter motor with 30mm bolt spacing and M4 screws.

Ok, take a look at this.



What do you see?

Remake the motor shaft from a transmission input shaft. Then the slipper will bolt right on like normal. Both shafts are 5mm.

I can see alot more gearing choices this way. OR wouldn't it be different if the slipper was on the motor?

Hmmmm..........the possibilities.

[MetalMan]

Originally Posted by sikeston34m

Remake the motor shaft from a transmission input shaft. Then the slipper will bolt right on like normal. Both shafts are 5mm.

I can see alot more gearing choices this way. OR wouldn't it be different if the slipper was on the motor?

Hmmmm..........the possibilities.

How are the tolerances on the input shaft (diameter)? I was thinking more along the lines of buying a die and modifying the original motor shaft, but your idea obviously requires a lot less work

[sikeston34m]

Originally Posted by MetalMan

How are the tolerances on the input shaft (diameter)? I was thinking more along the lines of buying a die and modifying the original motor shaft, but your idea obviously requires a lot less work

The Tolerances are good!

The bearings of the motor AND the bearing used in the transmissions have the same ID. Very nice fit. I just tried the input shaft into a 2826 that I have here.

The 2826/8 won't work with this type of gearing, but a lower kv motor would. I'll have to plug some ratios/kv's in and see what pops out.