Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How would you make an airbrake for a car that is activated by the brake light signal ?

Cd · 07-01-2023, 12:58 PM

Thanks everyone for the replies.
Lots of great ideas, but I really wanted to go cheap and simple on this one.
I spoke with a guy at the hobby store. He liked the idea, but said that it would strip the gears when the flap would go down ( air and gravity force ) if I were to use a large R/C servo.
I may still persue the idea in the future. Just to get an idea of how it all might work, I'm thinking of just using a cable and doing it by hand.
This of coarse would just be to test what kind of force is needed to raise the flap.
I'm guessing a considerable amount, since a large plate sized flap moving up into 80 mph air is going to have quite a bit of force.
I want to have it be automated using the electrical signal, since doing it by hand and applying normal brakes would be very cumbersome and dangerous.

07-01-2023, 12:58 PM	#33 (permalink)
Cd Ultimate Fail Join Date: Feb 2008 Location: Austin,Texas Posts: 3,585 Thanks: 2,872 Thanked 1,121 Times in 679 Posts	Thanks everyone for the replies. Lots of great ideas, but I really wanted to go cheap and simple on this one. I spoke with a guy at the hobby store. He liked the idea, but said that it would strip the gears when the flap would go down ( air and gravity force ) if I were to use a large R/C servo. I may still persue the idea in the future. Just to get an idea of how it all might work, I'm thinking of just using a cable and doing it by hand. This of coarse would just be to test what kind of force is needed to raise the flap. I'm guessing a considerable amount, since a large plate sized flap moving up into 80 mph air is going to have quite a bit of force. I want to have it be automated using the electrical signal, since doing it by hand and applying normal brakes would be very cumbersome and dangerous.