Mambas often squeak - my Micro pro does that with Losi motors. Doesn't with a Dynamite motor, but then thats basically the same as the Castle one.
In the Madrat/B4 the 4600kv will work better - it just will. It might not seem as fast, but thats because its controlled.
For the Cyber 10 you want the 5700 running a 20 tooth pinion, possibly 21. The 6900 will be ok, but harder to drive. That wants an 18 tooth pinion. You don't want the 7700 - its like that Novak 4.5t you saw in my D4. That might have looked fun, but I've sold it on because it was too much. My car was faster but I was slower because it wasn't controllable.
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Yz4 - Yz2
DEX210 - Cobra 4210- DEX410
RC10 Team - Manta Ray - RC10T
Mini Trophy - Blizzard - Wheely King
Tz4 - GT24B
BMRCC
Emergency back-up race controller
(but only if nobody better is available)
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