rc car front differential steering???

Projects General Guidance
1

i want to make a remote controlled car with differential steering. ie: steering that is essentially ackerman in nature (where the wheels turn at different angles) but implemented electronically. the idea being to use 2 servo motors to steer the 2 front wheels independently - & to control the servo motors using an arduino

[ the car will be anything from 1/18 - 1/10 in size. possibly made from Lego. possibly just a 2nd hand unit from ebay ]

questions are...

  1. does a car of this size actually benefit from proportional / differential steering?? (definitely worth bearing in mind)
  2. are hobby servo's accurate enough for what i want?
  3. MAIN QUESTION --- what is/are the algorithms i'll need to program the arduino??? & are there any links to sites/vids where people are doing this same thing?? (i've done quite a bit of looking before posting here i'm happy to take suggestions, links, ideas, etc in place of an actual answer. take what you can get & all that)

any help much appreciated

david

2

lancsDavid:
i want to make a remote controlled car with differential steering. ie: steering that is essentially ackerman in nature (where the wheels turn at different angles)

Why ?

I suspect it offers no benefit and maybe even a disbenefit.

On a real car the steering loads are not shared equally by the two front wheels - the outer wheel carries more load and must do more work so must run at a higher slip angle.

...R

3

ok, u're probably correct. i've just read somewhere else that says a similar thing.

probably just ensure car has good steering geometry & leave it at that