side bite

[HRT2332]

wanting to know if I get my right rear load number to high can I lose side bite and/or scotch in turn can make me lose drive off the corner.

[7uptruckracer]

Can be two separate problems. To high and you shear the contact patch. If you underload it you won't have sidebite because there is no weight to plant the RR to get scotch. BUT at the same time if you overload it it can have entry side bite but OVERDRIVE the LR on exit. The question is. Is it trying to over rotate From to much RR drive and you can't go forward straight or are both rear tires suffering from traction. Two different problems

[Jking24]

Are we talking about rr ride height load ?

[billetbirdcage]

Can be two separate problems. To high and you shear the contact patch. If you underload it you won't have sidebite because there is no weight to plant the RR to get scotch. BUT at the same time if you overload it it can have entry side bite but OVERDRIVE the LR on exit. The question is. Is it trying to over rotate From to much RR drive and you can't go forward straight or are both rear tires suffering from traction. Two different problems

The latter part is a pet peeve of mine: Saying "side bite" after the throttle has been picked up. IMO, you shouldn't refer to side bite once you are on the gas accelerating the car.

[7uptruckracer]

Agreed as a driver I only consider side bite a deceleration thing not even necessaritlya coast thing either.

The latter part is a pet peeve of mine: Saying "side bite" after the throttle has been picked up. IMO, you shouldn't refer to side bite once you are on the gas accelerating the car.

[Matt49]

Agree...side bite is the force keeping the car from passing itself getting to the center of the corner. Center of corner being defined as the slowest part of the corner.
I absolutely hate those diagrams that attempt to show you visually where corner entry, corner middle, and corner exit are. That is different depending on track configuration, track condition, and driving style. You're either decelerating and trying to turn or you are accelerating and trying to turn. When I tell my crew guys "entry" and "exit" they know that it means decel or accel and has nothing to do with where I am on the track.

[Len72P]

with the latest setups using spring loads, what would be the max. RR travel to shoot for. I have been told RR loads should be approx. 300 to 1000 lbs. would that 1000 lbs. be at 3 inch. or should we set it at 2 1/2"?

[7uptruckracer]

with the latest setups using spring loads, what would be the max. RR travel to shoot for. I have been told RR loads should be approx. 300 to 1000 lbs. would that 1000 lbs. be at 3 inch. or should we set it at 2 1/2"?

I have one now that is at 6" shock drop. 360-380 ish static preload and about 1300 dynamic at 3" its on a 225 with three spring rubbers.....of varying color

[Len72P]

7up , so do you shoot for 3" travel or 1300 lbs. I guess with a fixed, spring starting at 380, the result is not adjustable. I have been running a 250 starting at 350 lbs. and only getting 2 1/2" travel , so I am considering a 200/500 stack which I had used several years ago and put on the shelf. I would like to get more travel, say 3" and then set my max load at whatever , depending on lockout gap. Should I go for the 1000 like I was told or consider total load for track condition.

[7uptruckracer]

Our builder would like us at 3". As the track slows you'll pull rubbers for my stuff to maintain 3" The problem I'm having now is getting to 3" in hammer down so currently trying to work on that, Debating if its just the speed of the track or a car setting etc! When it comes down to it though give the car what it wants.

7up , so do you shoot for 3" travel or 1300 lbs. I guess with a fixed, spring starting at 380, the result is not adjustable. I have been running a 250 starting at 350 lbs. and only getting 2 1/2" travel , so I am considering a 200/500 stack which I had used several years ago and put on the shelf. I would like to get more travel, say 3" and then set my max load at whatever , depending on lockout gap. Should I go for the 1000 like I was told or consider total load for track condition.

[HRT2332]

Yes it is a deceleration issue on entry on turn in because we r back on throttle before center of corner. It's on the right front but it seems like it doesn't rollover on the right rear and plant, scotch, grip or sidebite. Yes i'm talking a high load number at dynamic of 2 1/2" of travel. I'm like 7up what is to high of load number for dryslick conditions. thanks for all help.

[Basecircle]

Curious as well. We’ve recently struggled with this too. Heat races, the car is over on the right rear and plants and goes, no matter what the situation. Can run high, low, in or out of traffic with no issue. Feature time, it’s way more sensitive to entry. It WILL stick similar to the heat race but not consistently, and changing lines or momentum due to traffic absolutely kills entry. It won’t roll at all, and then it’s way harder to pickup the throttle again.

[7uptruckracer]

Gotta love slick track racing!

[cjsracing]

Our builder would like us at 3". As the track slows you'll pull rubbers for my stuff to maintain 3" The problem I'm having now is getting to 3" in hammer down so currently trying to work on that, Debating if its just the speed of the track or a car setting etc! When it comes down to it though give the car what it wants.

This is probably a dumb question and you can PM me if you want. But as the track slicks off do you want the dynamic (3" number) on the RR to increase, decrease or stay the same?

[7uptruckracer]

It's pretty much going to decrease regardless because the track slows up so speeds slow up. The issue is if say X amount of roll steer and thrust angle is fast for you. If you don't travel the same you not only are losing load but your bars aren't travelling the same. So if you travel 1" or whatever on a stiff spring then all the sudden the track slows and you travel 1/2 you have lost load as well as the roll steer and thrust angle are different. So you'll see these spring rubber setups pull rubbers because all though the spring is softer you won't lose as much load because you gain the travel back to 1" and keep the other variables constant. Talking with another forum member here they don't travel 3" to be fast they are a different amount but I think the goal is the same to maintain the same variables.


This is probably a dumb question and you can PM me if you want. But as the track slicks off do you want the dynamic (3" number) on the RR to increase, decrease or stay the same?

[cjsracing]

It's pretty much going to decrease regardless because the track slows up so speeds slow up. The issue is if say X amount of roll steer and thrust angle is fast for you. If you don't travel the same you not only are losing load but your bars aren't travelling the same. So if you travel 1" or whatever on a stiff spring then all the sudden the track slows and you travel 1/2 you have lost load as well as the roll steer and thrust angle are different. So you'll see these spring rubber setups pull rubbers because all though the spring is softer you won't lose as much load because you gain the travel back to 1" and keep the other variables constant. Talking with another forum member here they don't travel 3" to be fast they are a different amount but I think the goal is the same to maintain the same variables.

Thanks. Unfortunately we can't run spring rubbers.

[7uptruckracer]

That's Insane I guess they would rather you get another shock valved identical with another spring setup on it in the smasher to change to or take the smasher to the track and change it or do all it of and know your turn differences for the spring change ahead of time

Thanks. Unfortunately we can't run spring rubbers.

[Kromulous]

So whats trump? Thrust angles and bar angles or travel numbers?

Meaning, the track slicks off and your travel is decreasing from the 3 inches you want to maintain. You can either go lighter spring and have less load at 3 inches or go less travel with the heavier

I guess it would be travel, maintaining the travel numbers with spring changes.

[7uptruckracer]

Trump is Make Racing Great Again! No idea which is better paying close attention to this is all new! We run tonight ill let ya know lol


So whats trump? Thrust angles and bar angles or travel numbers?

Meaning, the track slicks off and your travel is decreasing from the 3 inches you want to maintain. You can either go lighter spring and have less load at 3 inches or go less travel with the heavier

I guess it would be travel, maintaining the travel numbers with spring changes.

[Matt49]

Take compression out of the RR shock when it gets slick. Possibly take rounds out of both rights sides and add to both left sides to give the car some "pre-tilt".

[a25rjr]

Take compression out of the RR shock when it gets slick. Possibly take rounds out of both rights sides and add to both left sides to give the car some "pre-tilt".

Yep....and practice what Mark Bush has been preaching for awhile.....decrease left side weight!

[hunterracing]

Yep....and practice what Mark Bush has been preaching for awhile.....decrease left side weight!so how much decrease left side we talking most chassis builders want you around 54 or so.

[billetbirdcage]

so how much decrease left side we talking most chassis builders want you around 54 or so.

Not something I'd do, but like everything not right or wrong just my personal opinion

[billetbirdcage]

Yes it is a deceleration issue on entry on turn in because we r back on throttle before center of corner. It's on the right front but it seems like it doesn't rollover on the right rear and plant, scotch, grip or sidebite. Yes i'm talking a high load number at dynamic of 2 1/2" of travel. I'm like 7up what is to high of load number for dryslick conditions. thanks for all help.

Are you high static load with a medium spring or low static load with a stiff spring? big difference...

Meaning if you are saying a load at 2.5" of 1000# are you:

1. 375# static with a 250
2. 187.5 static with a 325

^ I just made up so numbers that was easy^

Second group of questions:

1. Does it have side bite sometimes and other times it don't - meaning inconstant
2. Are you pinching the car, trying to diamond? paper clip or momentum type track
3. Have side bite for a while then loses it
A. If so, does it recover real slowly

[hunterracing]

Are you high static load with a medium spring or low static load with a stiff spring? big difference...

Meaning if you are saying a load at 2.5" of 1000# are you:

1. 375# static with a 250
2. 187.5 static with a 325

^ I just made up so numbers that was easy^

Second group of questions:

1. Does it have side bite sometimes and other times it don't - meaning inconstant
2. Are you pinching the car, trying to diamond? paper clip or momentum type track
3. Have side bite for a while then loses it
A. If so, does it recover real slowly my rr right now is a 250 without me in its 11 1/4 tall from 12 inch tall spring so sure my static number isn’t high

[King1]

Wanna feel the rr better in the slick? Raise the jbar or drop the lf out a little more.

Tilting the car works well and taking compression out of the right sides helps

The guy i have been running with has taught me a lot about balance and that changing the balance of the car can and will be detrimental.

[a25rjr]

so how much decrease left side we talking most chassis builders want you around 54 or so.

He says 53.5-54.

I say....do whatever the car/driver likes. Its just a number.

Me personaly....I have always had good luck with shortening the rs bars 1/4-3/4 inch. We had a blue Rocket one time, and the driver felt shortening the bars 1/2" tightened the car up the best. I asked Josh Richards and he said that was a common adj for those type cars.

[CCHIEF]

You want your car to have the same attitude in the slick as it does in traction. How you do that varies depending on type of track and preferred line on the track.

[Krooser]

What is "scotch" other than something I don't drink?