Tamiya gearboxes

[jerry56]

That's kind of why I used them, I had them, plus when I was collecting parts there weren't any ready made CR servos and I was new to RC construction ( ok still am) and didn't want to try and convert servos. IMHO the gear boxes seem ok in these small conversion like the Delta loader and the D5... and if they do become problematic you can always change to servos because you don't have to hack the toy up to bad to use the gear box...