ball diff

[shawn]

I have got a ball diff to fit into my Baja King. What I would like to know is.... which gear box do I put it in to gain the most benefit. Common sense tells me the rear one but is this really the case ?

[tomlau]

i'd probably say the front. Remember the front wheels are steering the car aswell so the tyres need as much traction as possible.

get another ball diff to go in the rear

[DA_cookie_monstA]

Fit the ball dif in the front gear box, as this takes most of the load, with wheel lifting and a greater difference in rotation due to the fact that they steer.

For the rear, you could use the old trick of packing the planetary gears with grease, instead of lightly greasing them, this gives the diff a slightly tighter feel to it and a little more control like you would have with a ball diff (this don't work on the front, as the diff would get overworked)

[Tamiya_Racer]

does anyone know where i can buy these diff bits seperatly, like the little nut and bit the nut goes into, could you PM me please?

thanks

Tarnjit

[shawn]

Ok thanks guys. Front it is then.
Whilst fitting it today something I was just wondering was......... how does it works ??
So what a great part 2 to my original question.

I am not completly clueless, all I would like to know is:
Is a ball diff just a stiffer diff with the drive still going to the unloaded wheel, or what ???

You would be surprised the type of people who don't know a diffinative answer so please don't give me a hard time.
Over to you.
:-

[Dave I]

The ball diff allows you to set the amount off slip. The balls are able to slip on the diff rings, and by adjusting the tightness off the diff bolt you can adjust the slip

[DA_cookie_monstA]

Basically, it works by putting pressure onto the main dill balls, through the diff outdrives. The more pressure you put on the balls, the harder it gets to make them go from gripping the balls firm, to allowing them to rotate.

Doing this, you can CONTROL at what loading the diff goes from being a solid axle to a differential.

Whereas a planetary diff WILL ALWAYS act, no matter what loading is on it.

Abd the answer to your question, it will spin the unloaded wheel, but it just allows you to set the point at which that happens...