Transformation Vehicle (42140) PF mod
When I first saw images of this set, I thought it was just another tracked racer. But after seeing the review on Rebrickable, I was very impressed. It flips, and they solved the ground clearance problem of such vehicles (which normally prevents having a proper cabin) in a brilliant way.
Unfortunately (though obviously) it's using Control+ and I have no intention of getting into that, so I put my current project on hold and started working on a PF mod. I also replaced all the new alternating beams (I'm still not sure whether I want to get into that either). And of course also this new weird 19-wide frame; I don't think such pieces should be made, it's overspecialized and reminds of those weird Technic parts they made for Bionicle 20 years ago.
I adjusted the gearing to compensate for the speed difference between the PF & C+ L-motors (20%).
I did what I could to make the battery box as accessible as possible for changing batteries, but it's difficult as it's placed right in the core of the frame.
Usage note: as there's no software to control the behavior of the PF motors, the remote control has to be flipped in the hand when the vehicle flips. But since the control knob is symmetrical, that's a minor inconvenience.
The model is still quite heavy for the kind of stunts it's supposed to do, so it pretty much requires fresh batteries to function properly, otherwise it will lack power. It could also be that C+ are more powerful than their PF counterpart, but I could only find conflicting information about that, so I'm not sure.
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