Brake and ice?

Uh i tried braking with the 2wd sport pickup truck with the front wheel on the ground on the test map and rear wheel on ice and even idle it would not stop the truck seem like a bug

(2wd )

 

How does one stop a car on ice?

 

With 2 tire on asphalt.....

That exactly the bug..

front wheel on ground

REAR WHEEL ON ICE ( rwd )


And the damn thing still wont stop at idle speed with a manual without auto clutch

 

Well, try to brake a car WITH ABS on ice, ABS will simply not work... I think that's what he was trying to explain

 

Uh yea maybe abs was on did not think of that uh.


I was parked rear wheel on ice and front on the ground of the test map.

And i just put it in first gear holding the brake and it started going forward....



Do make sense that abs go crazy and wont brake or something

 

well, gee thanks a real lot for explaining that one before, you made it sound like you were trying to get the car to stop dead on ice it's self. Sometimes grammar can confuse a reader, don't have to write using SUPER CAPS and sound like I've got no sense of logic what so ever.

But yes with the front wheels on a material that has friction of some decent level it should be able to slow down the car.

 

Man im french... And i have lot of experience browsing other people that speak 10 time worse than me in english and i understand them... Not my fault if im aint very clear but im not the worst.

I put it in cap because it was not clear.


2wd sport pickup truck with the front wheel on the ground on the test map and rear wheel on ice


Ground and ice was what i used to explain it maybe i should have used tarmac or idk the word in english

Sorry.

Gonna try again without abs to see

 

Thank you diamondback for the explanation

 

I confirm without abs it do brake

 

I don't know if this would actually be possible, but actual ABS systems use sensors to check the rotation to see if the wheel is locked or not, so it pumps the brake, the wheel locks, it releases so the wheel moves again and it repeats the cycle...

 

But you wouldn't need the airspeed, just the wheelspeed...

 

Its a problem I've looked into before. Was wanting to add ABS and TCS to an RC car actually. Didnt bother in the end, mostly due to lack of a few things I needed and no money to buy them with. Actual ABS, not the really crappy guesstimation used in some high end radios (that simply ramps up brake pressure over an adjustable period of time with no accounting for the vehicles actual speed). Because of the parts issue, gave up investing too much time into it, but established it is indeed a highly complex issue.

I had a slight advantage even. The car was going to be running in a 2wd configuration. The car has no brakes on the front wheels, adding wheelspeed sensors to the front and rear would probably give a pretty reasonable approximation of whether the rear wheels have locked under braking on the basis that the fronts are still spinning.

Oh and I was planning on using a non hobby RC motor controller to allow for independant control of both throttle, direction and brake, RC ESC's don't usually allow for that.