Matt W

Hi,

Ive noticed a lot of the top drivers sometimes use 3000 rear diff oil even though they are racing on a tight and twisty track. Ive always thought that thicker diff oil reduces rotation in the rear, is this right?

Robertcooper88

iTrader: (15)

Thicker Oil increases rotation. The lighter the oil, the more the gears inside the diff works which creates traction and less rotation. The thicker the oil, the diff works less, therefore less traction and more rotation.

chasingthepack

ok so things im going to try next are lean front shocks in 1 hole,try 2.6 front spring or 2.8 rear ,3000 diff and 400/450 cst allround
ive also dropped from 2mm to 1 mm on the front outer links,does this sound about right?

Josh Hohnstein

iTrader: (3)

A couple things that I would try: Move weight back in the car, I don't know how you are running your battery.....plugs forward or rear? Plugs forward will put more weight to the rear.
You may be able to move the motor back a little also.......drop a few teeth on the spur and one tooth on the pinion.

A gear diff in the front with 2.5 million will also help with off power/ low speed steering.

martinskarin

Did you try progressive springs in the front?

pcar951

iTrader: (23)

I've found a quick fix for tight tracks with low speed corners. Add 1 or 2mm ackerman spacers (for less ackerman effect) and / or, 1.3 sway bar in the front. JMO, works for me.

chasingthepack

i have but i dont like the way the car feels with them on ,plus due to the banked sweeper any softer and the chassis starts to scrape,no one has ever got the progressives to work at this track

chasingthepack

i have the weight back in the car as you can see,the front end is a light as it can be,the fastest drivers dont use a gear diff so not sure thats the way to go,its a fast flowing track with just a couple of slow corners,in general i have always struggled getting the front to do what i want it to,and thats the main reason im losing time,i had issues with the brakes but ive worked on that and im now happy with the way it stops

tc3team

Sorry for the xray newbie question, but I have heard of some people using shock oil in the gear differentials?

Would a typical 75wt shock oil be similar to the kit 750 supplied item?

I only ask as gear diff oil does not appear to be so easy to get (I could get it from Demon Power, but if I can use shock oil then it's much easier to source! ).

Many thanks

pcar951

iTrader: (23)

Kit diff oil is 700cst, 75wt is closer to 1000cst so you may actually like the feel better with 75wt.

TT_Vert

iTrader: (72)

A little more detail. A comparison chart below of shock oil vs. cst.

erchn

iTrader: (7)

What is the front to rear weight balance? Mine for instance is 52% rear / 48% front.

chasingthepack

i would say about the same

Skiddins

Try removing some of those front shock shims as well.

My fastest times are with front progressive springs, and Zak Finlay who FTD'd the GP

JOE SI

iTrader: (13)

These shock charts are all different, I usually go by this one