Dane

iTrader: (26)

Chris,

What affects how fast and how long the weight transfers? With that said, how does "roll" come into play? How do you maximize tire contact?

Also, could you please elaborate on steering vs rotation and what a "fast" car must have of all of these effects?

Thanks.

Chris Adams

Oh boy, haha, i kinda figured this type of question was coming.

Oil and pistons will affect how fast the car rolls front to rear and side to side. I think that the springs affect how far the car will roll. Both have an effect on the amount of traction available at any given time. In general, the more traction a track has, the thicker the oil and stiffer the springs (until you start traction rolling).

Tire contact is all about camber, camber gain, and roll center. On asphalt i really dont think xrays should deviate much from the middle dot roll blocks. If you ever feel like the car is drifting around the track, add a little camber all the way around ~.5 degree at a time and the car should feel much more planted.

Steering vs rotation- Steering is what the front end seems to be doing on the track to get around the corner and rotation is what the rear does. The car has to be balanced or you will get too much steering and the car will get twitchy. Too much rotation and the rear of the car will seem like its sliding. IMO a fast car, especially in the slower classes (17.5) will be one that you can fat finger your throttle and the car will pull through the corner and still be pointed in the direction you want it to go ie the rear follows the front.

steve eaves

iTrader: (74)

You must also account for shock angle/comaperd to what weight oil spring you are running,camber link length=amount of camber gain,and amount of droop will also effect amount of roll.

Chris Adams

Doh, forgot about droop. What steve said is correct. Droop is super important. I would put it 3rd on the setup importance after camber and ride height.

rcfiend

iTrader: (42)

Chris/Steve thanks for the explanaition. I have one question in regards to camber gain. Is camber gain obtained by lengthing the camber links?

S.A.W

So do you run the stock setup and then adjust the car in the order above ? what about shock postion, springs, oil etc

Johnny Wishbone

iTrader: (6)

The antidive that Craig reconmends will help the off power loose feel.

Chris Adams

Shorter the link, the more camber gain you will achieve, longer is the opposite.

S.A.W

Do I need a 0.5mm shim under the front mount or just the rear ? would this give the same effect as changing the anti-dive (the plastic eccentric sus holders)

Thanks

Dane

iTrader: (26)

Rear. Suspension holder raise or lower by .75. The 0.5 would be a more subtle change.

rcfiend

iTrader: (42)

Thanks Chris.

So you don't acheive anti dive by changing the roll center blocks. Or is this a smaller adjustment?

rcfiend

iTrader: (42)

Opps just saw Dane's post. Disregard my last question. Thanks for the reply Dane.

Dane

iTrader: (26)

Thanks for the explination, Chris .

Looking at your BTH setup from last year, I remember you being very fast with excellent corner speed but how in the world did those crazy camber link angles work? Most setups I see around have pretty flat long links. What made you make this change and do you recommend it?

Chris Adams

I dont have a set order that i adjust. I usually just start with 2mm rise over ride height front and rear on droop, 5 mm ride height and 2 degrees camber all the way around and adjust from there. The adjustments are all about feel. I wish i could explain better but every track needs something different. At my home track ill usually drive a few laps with another persons car and be able to further help them with the fine tuning.

sidecarphil1

iTrader: (1)

where is the set up ???

Thanks Phil