I have two TT-5 buggies, one fully optioned, does more than 70 kmh once wound up.....great for bashing.....fitted with kill switch, (never had to use it).
The other I have just finished fitting the inlet hop ups, 813, stack, DD1 filter, Baja SS tuned pipe, so took her out for a bash....
15 minutes later, it takes off across the bush, between two heavy trees, flips, takes off in another direction flat out!!. By the time I hit the fail safe......it stopped with brakes on hard, but kept leaping forward like the servo was flipping to full on, then back to fail safe.....
Another kill switch on order, (and hitec throttle servo), luckily no damage done. By the way, the buggy is awesome, pulls 35-25-26-24 gears no worries with a stock 26cc with carb/pipe hop ups only.....