Pistons 6 hole, 4 hole, 3 hole etc?

[chet]

Hey

I just wanted to put this out there since Durango really plays with this more then other cars.

I have only run 4 hole pistons in my 210 so far, because I looked up most of the set ups on durango web set and thats pretty much all Jorn uses. 90% of the time he runs 1.3 4 holes in the front and 1.2 4 holes in the rears.

Has any one played with this a lot to see the highs and lows for carpet?

Theres more pack with less holes right? I've used 4 hole pistons in my dex408 on a blown out 1/8 track and it was really bad compared to 6 hole.

[chet]

Someone must have some info on this since the run 3 pistons no?

[Jason A]

Hi mate I am running this on carpet on my 210 seems work for me

Front
3x 1.5mm
40wt
Red springs

Rear
4x 1.5mm
30wt
Black springs

[chet]

1.5mm thats big, how does it jump? What size of batteries do you run with this set up, shorty or full size?

I would think it would dive into corners well and not tip over?

[maineyak]

Hi Chet, I believe more holes gives more pack. Read this section from the Team Associated handling bible. Applies to any car though:

The 3 hole pistons generate more "Pack" than a two hole piston. As oil passes through the piston holes the resistance that you feel is actually the oil shearing across the edges of the hole. With more hole surface area (three hole piston) there is more "Shearing" as the oil passes through the holes.

This gives the shock more pack. Don't confuse Pack with Damping though. Damping is the consistent resistance the shock provides when it is slowly compresses and decompressed. Pack is the instant resistance a shock provides when it is quickly compressed or decompressed. Here is a good example of the two. Damping is how fast the Chassis leans in a corner or when you change directions. Pack is how much the shock compresses when you hit the face of a jump or land after the jump.

It all comes down to how much pack you need for the track you are racing on. If you are running on a track that has a bunch on big air time jumps, you will need to use a setup with a lot of pack. If you are running on a track that is rough, rutty and has small jumps you will need a setup with little pack.

[Timee80]

I thought more holes meant less pack

[chet]

Originally Posted by maineyak

Hi Chet, I believe more holes gives more pack. Read this section from the Team Associated handling bible. Applies to any car though:

The 3 hole pistons generate more "Pack" than a two hole piston. As oil passes through the piston holes the resistance that you feel is actually the oil shearing across the edges of the hole. With more hole surface area (three hole piston) there is more "Shearing" as the oil passes through the holes.

This gives the shock more pack. Don't confuse Pack with Damping though. Damping is the consistent resistance the shock provides when it is slowly compresses and decompressed. Pack is the instant resistance a shock provides when it is quickly compressed or decompressed. Here is a good example of the two. Damping is how fast the Chassis leans in a corner or when you change directions. Pack is how much the shock compresses when you hit the face of a jump or land after the jump.

It all comes down to how much pack you need for the track you are racing on. If you are running on a track that has a bunch on big air time jumps, you will need to use a setup with a lot of pack. If you are running on a track that is rough, rutty and has small jumps you will need a setup with little pack.

Good info thanks man

[bigred5765]

Originally Posted by maineyak

Hi Chet, I believe more holes gives more pack. Read this section from the Team Associated handling bible. Applies to any car though:

The 3 hole pistons generate more "Pack" than a two hole piston. As oil passes through the piston holes the resistance that you feel is actually the oil shearing across the edges of the hole. With more hole surface area (three hole piston) there is more "Shearing" as the oil passes through the holes.

This gives the shock more pack. Don't confuse Pack with Damping though. Damping is the consistent resistance the shock provides when it is slowly compresses and decompressed. Pack is the instant resistance a shock provides when it is quickly compressed or decompressed. Here is a good example of the two. Damping is how fast the Chassis leans in a corner or when you change directions. Pack is how much the shock compresses when you hit the face of a jump or land after the jump.

It all comes down to how much pack you need for the track you are racing on. If you are running on a track that has a bunch on big air time jumps, you will need to use a setup with a lot of pack. If you are running on a track that is rough, rutty and has small jumps you will need a setup with little pack.

nope, more hole or bigger holes equals less pack my friend
but i agree with most of the rest set ur damping/pistons to suit the track, not just the car