Brushless EDF Tamiya F103GT

[What's_nitro?]

B15, the thought had occurred. I could do it, but it would require much more fabrication. Physically turning the fan around would be impractical, and reversing the fan would not work well since the thrust produced while running in the reverse direction would be minimal. The only other way would be to construct ducting around the sides to face forward, and then a means to convert from normal thrust and re-route the air through these side ducts. Extra servos/radio channels would be required. It wouldn't be as easy to drive with either, if you think about it, since brakes can usually stop a vehicle much more quickly than the vehicle can accelerate. With reverse-thrust brakes it would be a 1:1 ratio between acceleration and braking, therefore you need as much room to stop as you did to get going at that speed. I can see this method working perfectly for a drag car since they usually have plenty of room to stop.

Originally Posted by What's_nitro?

since brakes can usually stop a vehicle much more quickly than the vehicle can accelerate. With reverse-thrust brakes it would be a 1:1 ratio between acceleration and braking, therefore you need as much room to stop as you did to get going at that speed. I can see this method working perfectly for a drag car since they usually have plenty of room to stop.

I think youre going to have this problem anyway; if that fan can produce 5lbs of thrust, its going to be accelerating at well over 1g. The rear wheels wont be able to decelerate it anywhere near that hard.

[suicideneil]

Originally Posted by B15

I think youre going to have this problem anyway; if that fan can produce 5lbs of thrust, its going to be accelerating at well over 1g. The rear wheels wont be able to decelerate it anywhere near that hard.

Provided power to the fan was cut at the same time the mechanical brakes were applied, that should slow the car down pretty quickly. I would have thought quicker than with a normal motor & gear driven car since there isnt the need to slow any rotating mass of the the motor/transmission down before the brakes kick in. If you had a strong enough brake you could lock up the rear wheels and skid the car to a stop rather quickly I'd have thought- useful for emergency stops...