does bending aero ports decrease their performance?

[blackbonnie 5,000+ posts]

i have heard from a couple different people that when running aero ports, if there is a bend in them that it decreases there performance...

is this true?

i know with slot ports theres no problems, at least ive never experienced any audible differences, but what about with aeros?

i will be building my next box soon and i wanna run 2 6" aeros but in order for me to run the aero's i will have to bend them inside the box. i wanna shoot for the highest numbers possible and i dont want me bending them to effect it greatly.

i personally do not see how they would be effected with a bend, as the bend will be smooth and the same diameter throughout, but maybe im not thinking deep enough into it...

anyone have any input.

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[pr-festiva 10+ year member]

bending any port will effect it a little.how much it will effect it i dont know.just try and make the bend as gentle as possible. you could do a couple tests with the different ports and report the results

 

[blackbonnie 5,000+ posts]

bending any port will effect it a little.how much it will effect it i dont know.just try and make the bend as gentle as possible. you could do a couple tests with the different ports and report the results

can i ask how it effects it?

i mean it is a smooth bend with the same diameter throughout...is it just because its not a straight line/the quickest route for the air to exit the port?

and is this also true with slot ports?

 

[pr-festiva 10+ year member]

that was my understanding.i cant remember but i think it has some thing to do with eddies in the elbow caused by the air moving at a different speed on the inner and outer curve. but im not sure if im remembering that right

 

[blackbonnie 5,000+ posts]

did you read it up somewhere, or was it a discussion with someone?

 

[pr-festiva 10+ year member]

it was i while ago and i cant remember where i heard it, it might have been on the termpro forum

 

[blackbonnie 5,000+ posts]

ill try and look aound for it, anyone else have any input/info

 

[blackbonnie 5,000+ posts]

ttt

 

[Supergumby5000 5,000+ posts]

any bend will effect performance. Air will move in a straight line better than moving straight than taking a 90 degree turn, thats just physics.

Will a bend in a slot port compared to a straight port perform better than a bend in an aero port compared to a straight port? highly doubt it.

 

[blackbonnie 5,000+ posts]

will the difference be audible?

and how much of a difference on the mic will it be

 

[Lakota 5,000+ posts]

It would be dependent on the box.

 

[IDSkoT 5,000+ posts]

It would be dependent on the box.

This.

You can do it. But the ideal port is straight. So, an attempt that box designers / builders face is trying to make the port as linear as possible. If you can, try to do a 45* angle, rather than a straight 90. But, in terms of audibility, I don't think they'll be much. But, it may affect your score.

 

[S_B 10+ year member]

This is why you see guys with the port half way out of the box so they dont have to bend them

 

[gotparts90 10+ year member]

use long sweep dwv drain fittings you can get them at a supply house. that will keep the bend to a large radius I forget how much to add to it per bend but the bend decreases the tuning a bit more per inch than straight. As long as you try to keep the radius large its OK.

 

[blackbonnie 5,000+ posts]

This is why you see guys with the port half way out of the box so they dont have to bend them

im gonna try this if i can get it to work

This.
You can do it. But the ideal port is straight. So, an attempt that box designers / builders face is trying to make the port as linear as possible. If you can, try to do a 45* angle, rather than a straight 90. But, in terms of audibility, I don't think they'll be much. But, it may affect your score.

i may also try a 45 angle if i cant do the above

use long sweep dwv drain fittings you can get them at a supply house. that will keep the bend to a large radius I forget how much to add to it per bend but the bend decreases the tuning a bit more per inch than straight. As long as you try to keep the radius large its OK.

do you remember where you read about the tuning decresing?