SH Z-Car ZMXB-8 1/8 Buggy - Perfect for conversion?

[MetalMan]

Originally Posted by MrZ

Metalman can you help with this one. I used the stock center steel diff spur gear (44T) and I'm using the 16T 5mm Pinion that I bought on Monster (Madusa motor.)When I roll the rig back and forth, it make some what of a load metal to metal sound. The sound is coming from these two gears. Could it be that the pitch is off or are they a standard pitch, ie 48. Can it also be the fact that the bottom plate is metal as well, applifying the sound ? Also, when you put together the center diff, did you use the 50% oil the comes with the kit or did you use a heavier one? The reason is, I'm getting a lot of power up front, where my front wheels are balooning at high speeds, does this mean I might need a heavier oil in the center diff? What ever help you can give I would appreciated. Thanks in advance

The noise you are hearing is a direct result of the Medusa motor being slotted, where the windings of the motor are arranged around a stator similar to what you would find on a brushed motor (notice a brushed motor has detents in its rotation too).
My Z-Car is actually one of the quietest of the conversions at the local track, even with a Neu (slotted) motor and steel pinion and spur.

I think my center diff is filled with 10-15k right now, but I haven't messed with any of the diffs since I built the buggy... As for shock oil, I think I have 50-55 front and 40-45 rear.

[Trike]

I got my parts in yesterday, I'm just about done. Waiting for the M11 and DS1313 servo to show up. I just briefly fired it up with 3s and a FM radio I had laying around. I can tell this thing is going to rock

Here's some pics

[Sower]

Very nice! By the way, are those shocks big bore?