Dltreezan

iTrader: (3)

Aight guys, the kit I am going to make is taking forever to get here and Im getting bored. I figured id give this a shot and in a few years or whenever Arabuni decides to give me that kit to chop up Il go ahead and get started but in the meantime i wanna make another hood. Not too hard to come up with a prototype, Im just looking for some motivation. Basically I want you guys to blow smoke up my *** and tell me how cool it would be and how much Ill be the man and how I will be cool like everyone else and that you guys will let me sit at the lunch table with you and play hopscotch on the playground like the cool kids. Then Ill have the gas to blow some more money I dont have to spend on another project. Come on guys, give me a hand

lost01388

looks pretty good.. how much would u sell one of those for?

Dltreezan

iTrader: (3)

what? the hood i have in the sig? those are $379. Im talking about a new design, probably a lil more pricey. Let the smoke blowing begin.

j200pruf

iTrader: (4)

I WANT I WANT!!! Hell I'll even help you make it dude
I got my rex running again so I will be free on Tues Thurs and Fri. and I am at Sylvania from 10:00-12:00 on Tues and Thurs, so shoot em a PM if you have any of those days off.

Dltreezan

iTrader: (3)

hell yup im off on fri's. But justin its different for you. Ill set up the mold and you can throw whatever you want at it and have one for free when i get done.

SnowmanSteiner

wait is this going to be another one of those, compeletly untested, but I say it will work designs where you just fiberglass peices of alluminum into the hood at random points where you THINK it needs support. Or is this going to be the same thing only copying someone else's design. Sorry for being so blatent but I watched the design process of the last one, and couldn't help myself, that design was for a 3rd gen, not a 2nd gen, the front of the cars, brackets, radiator, supports etc are completely different. Just taking a scoop from a 3rd gen and putting it on a 2nd gen doesn't constitute garunteed better air flow. I wouldn't buy anything that was supposed to better cool my car based on aerodynamics when it has been taken from a completely different body styled car and made to fit mine, the slope of the hood is completely different which makes the air flowing over it react completely different. I wouldn't buy it unless you put it in a wind tunnel and tested it. Hence why I am putting my designs through a wind tunnel before I finish them.

- Steiner

Fritz_X

iTrader: (1)

How about an FC Scoot hood? Gills and all? I think you could do it!

--Fritz

TurboII RudeBoy

Hey buddy, i don't know if you know but a hood is a low pressure area any reverse sccop with a lip above it WILL cause a high pressure area and basically suck a lot more air through the scoop than without one, i am presently using a late model japanese car's reverse scoop right now i'll post piks when done.aerodynamics on a hood don't matter that much.

Dltreezan

iTrader: (3)

aight steiner that hood was from over a year ago and it was a prototype, id never use that **** again, just experimenting. I wouldnt be taking copies of anything, and even if that was the case it doesnt matter, as long as you have a vent in the right place. Anyhooters it will be like scoot style gills but not so FD'd if you get my point......they wont be rounded out.....very straight but nicely aggressive...scoot with the fc touch and without that vent as it wont be bubbled

SnowmanSteiner

Yes I realize that a lip will cause a low static pressure zone, and cause the air in the engine bay to be sucked out, but what I am saying is the curvature of the hood is different, the lip for the last one was based off the lip for the FD. So the dynamics of where the peak low static pressure zone is going to be different depending on how the air hits the front of the car and travels up the hood to the lip. If the lip is aimed too high it will cause a low static pressure zone that is too high and will reduce the amount of air that will pulled from the scoop. If it is aimed too low you will put the poing farther back and closer to the hood which could cause too much turbulence and possible eddies which could re-enter the hood. You have to design the lip specifically for the aerodynamics of the FC. You have to determine what the best grate of the lip is as well as determining what the grate of the scoop can be. This requires a lot of experimentation to figure out the points that will optimize this setup, just copying a hood for an fd doesn't take any of that into count, hence it isn't going to be able to flow as well as one desing for the fc will.

- Steiner

Dltreezan

iTrader: (3)

I call BS. It sounds smart and well thought but IMO even without a bump air is still going to be coming out that hood one way or the other. There is enough positive pressure underneath the hood itself that giving it a place to escape is going to vent enough heat on its own....i can show a flow chart. Either way, if going 140 in the car will rip the hood off in some cases im plenty sure that having only vents alone would allow all that pressurized air out......not as much science into it as you may think

SnowmanSteiner

Yes it will let air out but it isn't efficient. You could get more air out if you did research and did wind tunnel testing. If you think there isn't that much to it, than you come tell the dean of Aerospace engineering that I'm working with, cause I'm sure he'll totally agree that aerodynamics is just basic crap, which you can just guestimate and not have to do any research. NASA is fake the government is just using all that money towards "research" for funding the Iraq .

- Steiner

j200pruf

iTrader: (4)

Ok Steiner, since you are working with the dean of Aerospace, how bout you get us some information to use?

I can tell you that Dlt. makes some pretty nice hoods, and they do work. I am also pretty sure if he had a buch of money for wind tunnel testing he could make it the best it could be, but what do you think that would do to the cost?

But seriously why don't you try and help since you seem to know some ppl that know about this kind of stuff.

SnowmanSteiner

There are programs all over the internet that give you simulated aerodynamics. All you have to do is take some simple measurements of the hood and where the intake sits and what not and you can get a fairly accurate reading, and adjust it till the low static pressure point is optimized over the vent. It's not that hard. Although it's not completely accurate it can give you a start. I'm working on designs now for a stock hood with vents and we'll test it in the wind tunnel.

- Steiner

SnowmanSteiner

Missed something. As far as price you get what you pay for. I personally would never buy anything that hasn't been tested with actual equipment to show that it does what it is supposed to do, well, and consistently. I'm not going to take someone's word who says oh yeah you can feel a difference when you put your hand in there after a pull. That's not accurate information to me. I guess it's just the way I'm being taught, but I don't believe in buying or endorsing stuff that doesn't have an actuall design process to it where you have multiple solutions and you do tests, comparisons, and analyze it all to figure out what is best. Why do you think the big companies have higher prices, because they actually do research with specific instruments that measure exactly what the want not just something that's universal. Not saying that he hasn't tested it, just not with the equipment that bigger companies have access to. Just taking something off of one companies product and throwing it on a hood for an FC, for me doesn't show any evidence of anyone stopping and saying hey maybe there's a better way to do this, or maybe we can make this work better if we test some stuff. Sorry if I sound like a dick but it's just the engineer in me that doesn't like untested stuff.

- Steiner

3RotorRocket

Aie how about making a scoot hood for the fc3s that would be sweet.

SnowmanSteiner

I think that's one of the things he's talking about making.

- Steiner

Dltreezan

iTrader: (3)

aight steinberger, heres the chart with the aero that you were asking for and what i was talking about earlier....i place the vent as close to the front as i can but the stock fan gets in the way so i do the best with what I can. As far as getting what you pay for I do my best to keep stuff as inexpensive as i can where most FC owners dont have money to blow all the time like alot of those FD guys, so i offer the cheap alternative. I like quality stuff for less and thats why i want to go with a new design, something similar to the scoot but Fc'ized matching FC lines. ANd for the price that i plan on making it i dont think anyone could complain. As for now this is a hobby and not a business so im not out to make millions. I could easily settle with a decent product with a few waves that are easily sanded out and upon seeing many fiber companies products i dont have anything to worry about but i still want to be able to put out a perfect product whether the **** is gonna get fixed at the shop or not anyhoots. Check the diagram and heres ur flow......why do windtunnel testing when someone else has done it for you.

Dltreezan

iTrader: (3)

Fritz_X

iTrader: (1)

A very professional response DLTreezan, very mature . Nice to avoid nasty little flame-wars, that so often spring up all over RX7club.com.

My Respect!

--Fritz

SnowmanSteiner

Yes that gives you the aerodynamics of the car, but it still does not give you the aerodynamics of the actual lip. Placing as far forward as you can is not going to ensure the best flow. Where it is placed and the angle of the lip, how long it is etc, is what matters. You may call it flame, I call it having the ability to go through a thought process. Engineers look at things and try and fix them. So what's wrong with me trying to help him get this better on the way to being more efficent?

- Steiner

Dltreezan

iTrader: (3)

Zer0 Cylinder

the scoot hood for FD's.......thats the best looking hood ive seen on any car.....make a replica for FC's.....guaranteed to sell.

SnowmanSteiner

Now you're on the right track. You just had to stop and think

- Steiner

Dltreezan

iTrader: (3)

thanx for your inspiration I knew you were right about the wind tunnel all along!!!