Originally Posted by
Matt Pocknell
Tweak occurs because the car is made from 2 chassis plates, and these can then mis-align with impact or from being built wrong. This causes the chassis to act differently in different directions.
To remove tweak, just loosen all the top deck screws and tighten them back up on a flat surface, just like is mentioned in the above post.
Tweak can also come from weight distribution on the chassis. With heavier electronics on the left rear (e.g. a brushless set-up), it can put differing pressures onto the tyres (this, IMO, is effectively tweak).
By adjusting the collars to equalise the effective "pressure" displayed, the tweak is elminated.
I've tended to find that when running B/l, I need to adjust the collars of the car to componsate a little for the extra weight on the Left rear, versus my brushed gear.
HiH
Ed