Velossa Tech Design - BIG MOUTH development

ssyellow · Dec 17, 2015

Cool stuff and nice intro post, look forward to see what you come up with.

I believe there is a company doing brake cooling ducts if you plan to get into that segment, more competition never hurts us customers though

Schu · Dec 17, 2015

Looks very similar inlet ideology to a mugen design for s2000... quite successful I might add.

Zerobar78 · Dec 17, 2015

JoeySperz said:
How big is the opening in the front? It looks small?

As people are already doing you will at least need to drill out the remaining honeycomb in that part of the grill. A lot of the aftermarket grills would likely compliment this really well being almost entirely mesh.

VelossaTech · Dec 18, 2015

Yep you'll want to shave the honeycomb flat spots for max pressure rise in the airbox.

JoeySperz · Dec 18, 2015

Zerobar78 said:
As people are already doing you will at least need to drill out the remaining honeycomb in that part of the grill. A lot of the aftermarket grills would likely compliment this really well being almost entirely mesh.

How big is that opening though? Big enough to get enough air to make a difference?

VelossaTech · Dec 18, 2015

JoeySperz said:
How big is that opening though? Big enough to get enough air to make a difference?

Plenty big to make a difference. Assume you are flowing 60 lbm/min of air (this is a lot of air somewhere around 650 whp or so worth of air).

The frontal opening area of the triangular kidney segment of the grill is about 10 in^2, roughly.
Assuming the air density is about 0.074 lbm/ft3.
Using just Rho = mdot/(A*V)

The velocity of air going through just that opening with the mass flow of 60 lbm/min is only about 194 ft/s. If you are going say 60 mph, you'll start to see big differences in mass airflow. At 60 mph the engine will essentially be doing only 194 - 60 mph = 134 mph worth of work, this is a crude way to look at the physics problem since it is an oversimplified explanation. but it will give you a ballpark idea of how important this type of ram system is on a moving vehicle.

the faster you go the less work the engine has to do to pull in air vs having no frontal inlet exposure, as it is getting kinetic energy assist from the motion of the car.

ssyellow · Dec 18, 2015

I don't always understand the math, but I like the math. Math and science are good.

D3adch1ld · Dec 19, 2015

VelossaTech said:
Plenty big to make a difference. Assume you are flowing 60 lbm/min of air (this is a lot of air somewhere around 650 whp or so worth of air).

The frontal opening area of the triangular kidney segment of the grill is about 10 in^2, roughly.
Assuming the air density is about 0.074 lbm/ft3.
Using just Rho = mdot/(A*V)

The velocity of air going through just that opening with the mass flow of 60 lbm/min is only about 194 ft/s. If you are going say 60 mph, you'll start to see big differences in mass airflow. At 60 mph the engine will essentially be doing only 194 - 60 mph = 134 mph worth of work, this is a crude way to look at the physics problem since it is an oversimplified explanation. but it will give you a ballpark idea of how important this type of ram system is on a moving vehicle.

the faster you go the less work the engine has to do to pull in air vs having no frontal inlet exposure, as it is getting kinetic energy assist from the motion of the car.

This logic assumes it's a closed box. Most CAI with open element will not really benefit of this.

Sent from my SM-G928T using Tapatalk

VelossaTech · Dec 19, 2015

D3adch1ld said:
This logic assumes it's a closed box. Most CAI with open element will not really benefit of this.

Sent from my SM-G928T using Tapatalk

Current design is going to work with the stock airbox which is closed from what I found.

Poppacapp · Dec 19, 2015

D3adch1ld said:
This logic assumes it's a closed box. Most CAI with open element will not really benefit of this.

Sent from my SM-G928T using Tapatalk

Stock air box is better than all the other CAIs anyway

Blk2015GT · Dec 19, 2015

Poppacapp said:
Stock air box is better than all the other CAIs anyway

Without a tune that is.

Kahboom · Dec 19, 2015

Subbed

VelossaTech · Dec 20, 2015

Just got my measurements and will be posting some interesting things in the very near future... Stay tuned.

MaskedRacerX · Dec 20, 2015

Love this development thread, I'm kind of a sucker for actually seeing design and engineering processes.

Where are you located in Florida?

VelossaTech · Dec 20, 2015

MaskedRacerX said:
Love this development thread, I'm kind of a sucker for actually seeing design and engineering processes.

Where are you located in Florida?

Right off 95. On stirling road.

Come visit some time, I think you will have a mind = blown moment when you see what we can do.

:cheers:

Velossa Tech Design - BIG MOUTH development

ssyellow

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Schu

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Zerobar78

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VelossaTech

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JoeySperz

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VelossaTech

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ssyellow

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D3adch1ld

Blabber Mouth

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Poppacapp

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Blk2015GT

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Kahboom

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VelossaTech

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MaskedRacerX

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