Do you balance the wheels on your racing car?

[BYprodriver]

Originally Posted by Sumflow

I think the main question should be is static balance alright, or do we need dynamic balance?

Static imbalance is a up & down force

Dynamic imbalance is a side to side force

[Jittsl]

Originally Posted by BYprodriver

Dynamic imbalance is a side to side force

What (other than a bent wheel) would cause a side to side force? Seems to me that all forces on a unbent wheel (ie forces derived from rotation around a single fixed axis) would be "up and down".

[stephen wilson]

Originally Posted by Jittsl

What (other than a bent wheel) would cause a side to side force?

Read post #24.

[Jittsl]

Originally Posted by stephen wilson

Read post #24.

I did steve but here is my problem: if I have a heavy spot on the outside edge of a wheel the compensating weight would be placed on the same edge 180degrees away. Wouldn't it? I am no expert so I'm looking to understand here.

[stephen wilson]

Originally Posted by Jittsl

I did steve but here is my problem: if I have a heavy spot on the outside edge of a wheel the compensating weight would be placed on the same edge 180degrees away. Wouldn't it? I am no expert so I'm looking to understand here.

The key is, if you're not dynamically balancing, you won't know if the imbalance is towards the inside or outside, so getting the weight in the exact right spot is a crap shoot.

[Jittsl]

Originally Posted by stephen wilson

The key is, if you're not dynamically balancing, you won't know if the imbalance is towards the inside or outside, so getting the weight in the exact right spot is a crap shoot.

That makes it clearer. So then, When my guy is spinning my wheel on a machine is he doing a dynamic balance? If not can someone describe the process difference?

[Brad Roberts]

Unless you see him select the balance method, you won't know

I'm betting if you are using a Discount tire, they are balancing dynamic.

FYI: The Discount Tire owner is a GT3Cup car racer

Try the PAM. I'll send you the $5 if it doesn't work. Thin coat.

The motor oil is not designed to stick to metal and motor oil is not good as it runs off onto the tires



B

[BYprodriver]

Originally Posted by Jittsl

What (other than a bent wheel) would cause a side to side force? Seems to me that all forces on a unbent wheel (ie forces derived from rotation around a single fixed axis) would be "up and down".

lateral runout in the wheel &/or tire or brake rotors

uneven tread wear

damage

heavy spots

nothing is perfect