Sterted cutting holes :-)
Discussion
Nice mod Tux 
, i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.
, i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.R0162 said:
Nice mod Tux , i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.
If you use a fine mesh you will lose most of the benefit as the air simply won't flow through it, i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.Rob_W said:
R0162 said:
Nice mod Tux , i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.
If you use a fine mesh you will lose most of the benefit as the air simply won't flow through it, i was planning on doing the exact same modification, Dave at Jetstream has done the same mod on his race cars and said it works a treat for diverting air towards the M400 scoops, i am going to use a fine mesh though as i think if small stones get through they will make a mess of the paint on the door.Disclaimer: This might be of interest to nobody, but I know a lot of you seem to enjoy a bit of random engineering when it comes to tweaking stuff like this.
As opposed to a mesh and the related clogging vs size debate, but at the cost of a bit of potentially fiddly fabrication it strikes me that a basic form of inertial particle separator might be of use here. And if it's good enough for helicopter engines it should be OK for keeping paintwork beautiful!
The link above explains it in terrifying detail, but (and without meaning to teach anyone to suck eggs, there are much smarter than me here!) essentially think of a speedbump in an airstream. As air hits the speedbump it's forced upwards, then gravity starts to pull it back down. Because stones/grit/water is heavier than air, it has more inertia so it takes longer for gravity to drag it back to the ground. So if you put a vent immediately after the speedbump it'll only get air as everything else passes overhead.
Given that in motion you should get a pretty decent pressure differential between the arches and the area behind them, it should be feasible to turn this whole thing on its side and use gravity to deal with crap that gets separated out, dumping it out of the bottom .
I've gotta confess to not having given this a great deal of thought, but the problem made me think of the technique so I thought I'd bring it up. Not to mention cleaning mesh INSIDE the arches sounds like no fun!
Al
As opposed to a mesh and the related clogging vs size debate, but at the cost of a bit of potentially fiddly fabrication it strikes me that a basic form of inertial particle separator might be of use here. And if it's good enough for helicopter engines it should be OK for keeping paintwork beautiful!
The link above explains it in terrifying detail, but (and without meaning to teach anyone to suck eggs, there are much smarter than me here!) essentially think of a speedbump in an airstream. As air hits the speedbump it's forced upwards, then gravity starts to pull it back down. Because stones/grit/water is heavier than air, it has more inertia so it takes longer for gravity to drag it back to the ground. So if you put a vent immediately after the speedbump it'll only get air as everything else passes overhead.
Given that in motion you should get a pretty decent pressure differential between the arches and the area behind them, it should be feasible to turn this whole thing on its side and use gravity to deal with crap that gets separated out, dumping it out of the bottom .
I've gotta confess to not having given this a great deal of thought, but the problem made me think of the technique so I thought I'd bring it up. Not to mention cleaning mesh INSIDE the arches sounds like no fun!
Al
mgbond said:
Can I ask something.
If this is behind the front wheel how would you get air flow as such. you will get pressure release (which is air flowing i know, but not to the extent that it does for the blowers and tunnel mod?).
Bondy
currently air going down the side of the car gets disturbed by the wheel and the step back after the front wing, this means the air effectivelly will tumble down the side of the car and thus minimal airflow will ever go into a scoop unless it is silly wide beyond this turbulence... allowing air out of the front arch allows air out but most importantly this new air flow effectivelly tidys the air flow down the side of the car and even encourages new air to join it and thus flow into the scoop.If this is behind the front wheel how would you get air flow as such. you will get pressure release (which is air flowing i know, but not to the extent that it does for the blowers and tunnel mod?).
Bondy
It will also work very well on our cars that don't have the scoops as well, hence im doing this mod as well
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