Originally Posted by Fjeld (Post 11211342)

Turn the diff holders so the diff and spool are at highest point in the car, you will then get a higher roll senter.

Originally Posted by Dog Bone (Post 11224992)

Can someone explain this statement? The height of the diff has no bearing (ha) on the roll center since roll center is defined by the upper links and the lower suspension arms.

Changing the angle of the drive shaft by raising/lowering the diff may alter the efficiency of the drive train at various suspension angles (+/- chatter, for example), but it won't alter the roll center.

Originally Posted by CristianTabush (Post 11225042)

Your statement is correct. The things that change the roll center is the lower suspension blocks and the upper link positions.

I guess most of us missed that statement. There is no such thing as a diff roll center. It is just a diff height change, which only affects how the car lifts or squats under power due to drive shaft angles.

Originally Posted by RussF (Post 11224890)

What length front and rear camber links do I need to use the 1-6 holes on the shock towers of a TC6?

A part number would be most helpfull.

Originally Posted by CristianTabush (Post 11225227)

The difference in weight of moving the diff is not that great. However drive shaft angles will have an effect on handling. A drive shaft has a natural tendency of wanting to straighten itself out under power, so the higher it is, the more the car is going to want to straighten itself and lift the a-arms. Opposite would be true if it was lower.

Originally Posted by Dog Bone (Post 11225099)

Thanks - I've seen that statement made a few times in various places - glad I'm on the right side for a change :lol:

Raising the diff would of course raise the center of mass, which would introduce more roll (since the R/C would have a larger radius to work around), but you are *not* changing the roll center.

Perhaps that's what he's referring to?

Originally Posted by CristianTabush (Post 11225227)

The difference in weight of moving the diff is not that great. However drive shaft angles will have an effect on handling. A drive shaft has a natural tendency of wanting to straighten itself out under power, so the higher it is, the more the car is going to want to straighten itself and lift the a-arms. Opposite would be true if it was lower.

Originally Posted by Dog Bone (Post 11224992)

Can someone explain this statement? The height of the diff has no bearing (ha) on the roll center since roll center is defined by the upper links and the lower suspension arms.

Changing the angle of the drive shaft by raising/lowering the diff may alter the efficiency of the drive train at various suspension angles (+/- chatter, for example), but it won't alter the roll center.

Originally Posted by B.C.Ninja (Post 11231631)

Just to throw a little something to the mix, raising or lowering the diffs will essentially raise or lower the CG a little therefore have a direct effect on the roll center, you haven't changed the roll center through the normal suspension geometry but in a sence the roll centers effects will change due to the relation with the cars CG.

Any way on a different note, I need to "flatten" the car out with relation to my tracks infield, any pointers on wich blocks and position to run, I'm runneing 13.5 boosted and have the suspension all sorted just need to dial out the excessive roll, my mates T3 picks up a third of a second every lap through our infield and it sits nice and flat.