Gas R/C car

[John Gutmann]

I have already built one robot that i am still improving upon but i needed more speed...

so ever since this winter i have wanted to build a gas r/c car and haven't really had the money up til about now because i will soon be getting a better job.

i look at some of the systems in the T-maxx cars and saw how simple they are, i will most deffinately be using the steering system which is the simplest i have found anywhere and I am thinking i would like to make it have suspension and maybe 4-wheel drive so it can have fun off road too.

and i need some suggestions and ideas, i dont really have a size in mind i would like to make it much larger then the T-maxx cars beacause i am going to us some sort of small gas motor from either something like a chain saw or weed wacker, or something else which ever i can find cheaper. But i dont really have any specs on any weed wacker motors because i can find them, any one know the average torque and RPMs for one?

i dont know the wheel size, i make make it interchangeable so that on the road i can put large wheels on to go faster and then smaller ones for off road

another HUGE problem is the differential, anyone know of any inexpensive solutions? i was thinking of using one off of a T-maxx which i would figured would be ok because they r hardened steel and made for high motor speeds if they are used in cars that can go 60 MPH+ would it be fine with a weed wacker

if(most likely) i use a weed wacker motor i need a centrifugal clutch to use with, which would means i also need the idle speed of the weedwacker i will use, so anyone know of good places to get a centrifugal clutch for cheap?