Centre Diff
 

Hey guys,
I have a friends RC car which I am trying to setup/fix.
It has a centre differential and from driving it, it handles much like a FWD car. It has a rear swaybar so it kind of understeers on throttle (the front wheels start spinning) and oversteers off throttle. It's fairly easy to drive though this way however it lacks acceleration because it just spins up the front wheels

I have a locked centre diff for it as well and wondering which would be best to use? Open or locked?
I notice with my car which has no centre diff, power oversteer happens relatively often where as the car with the centre diff has no chance of doing that

Suggestions??

RE: Centre Diff
 

what car is this???

RE: Centre Diff
 

My friends car is a GV of some sort
It's got 280mm wheelbase so it's a super10 size car (like mine as well)

RE: Centre Diff
 

http://i26.photobucket.com/albums/c1...3/DSC02527.jpg
http://i26.photobucket.com/albums/c1...3/DSC02526.jpg
http://i26.photobucket.com/albums/c1...3/DSC02525.jpg
http://i26.photobucket.com/albums/c1...3/DSC02530.jpg
http://i26.photobucket.com/albums/c1...3/DSC02528.jpg

RE: Centre Diff
 

Try softer springs at the rear. Oversteer happens cause it's not 2 speed so you have engine braking when you're off throtle.

RE: Centre Diff
 

The oversteer/understeer isn't an issue, i'll set it up later
I'm just wondering what is better overall for a asphalt track
Open centre diff or no centre diff?

RE: Centre Diff
 

Definately a fully locked differential or a 2 speed-no differential gearbox...

RE: Centre Diff
 

To be honest I liked how my single speed was...
The 2 speed is sort of annoying because when rolling and going onto throttle it "hits" too hard when the one way and the shaft reach the same speed
Plus I like the noise the engine makes when you let go of the gas but its still in high revs from the roll

RE: Centre Diff
 

Well it's ok to me but engine braking will be always causing rear end unstability while cornering. If you don't lock it then during a corner front wheels steer and tend to decelerate while weight transfers happens to the front end wich tends to lift the rear end...that reduces rear traction while center differential transfers torque to the rear wheels and you loose rear end!!! Once you lock it this fixes but you still have the engine braking issue.

RE: Centre Diff
 

I will lock it and see how it goes
In reality it's not serious racing, just me and a friend "bashing" on a track really

I've never driven on a track before and I'm looking forward to it :)

RE: Centre Diff
 

Edit:
Wrong Thread :)

RE: Centre Diff
 

if you are doing on road, the center diff can be locked. The purpose of the center diff is to split power between front and rear axles. If it is locked, the rear axle gest 50% of power everytime you nail on the throttle, if the center diff is unlocked (also depends on how hard diff oil you use), some of the power will be transfer to the front (minus from the rear) axles during acceleration, making it more like a FWD car, easier to drive.

I think you will need harder springs for on road.

RE: Centre Diff
 

Yup I already put the locker into it :)