Max Mort writes:
Weights in the rear can work for people who drive the car so that the rear end is loaded most of the time.
Both Joseph and I have not liked adding weight to the rear. Both of us like to drive with the rear end quite free. David is very different of Joseph driving/setup wise.
If you are interested to try adding weight towards the rear try engine back and engine forwards. If you like engine forwards dont bother with the weights. If you like engine back you might like the weights. Keep in mind though that shorter chassis has more rearward bias and more weight transfer due to decreased leverage. For long chassis visa versa. If you are running the long chassis look into this first before adding weights.
I have tried this on multiple cars also taking into account the weight balance and it has never been something I have enjoyed. The initial grip on the rear is slightly higher but over bumps and when you lose grip the pendulum effect will be making the car harder to drive overall. DR drives in a way where his rear end is super soft and likes to fold to begin with. He is very good at driving the car on the edge of the grip without going over the limit. Thats why he can run the weights to good use.
Also in theory this is the effect, rear heavy cars tend to oversteer.