DRAGON Circuit car

[niko]

Originally Posted by DRAGONFD3S

...everthing is done for a reason...

In what extent have you taken aerodynamics around the car into consideration? Obviously it's always a bit of a balance between cooling and drag, especially in the front. You seem to have some sort of diffuser at the back, is it a part of some wider aerodynamic construction, i.e. the air flow under the car? What have you done there? Do you have any pictures?

Thanks in advance.

[DRAGONFD3S]

Originally Posted by xborninthefightx

wow thats crazy. Are those extra metal bars welded on to the rear subframe, or is that how RX ones look like.

Yes additional bars and diff remounted.

[DRAGONFD3S]

Originally Posted by PhatBob

Asthetics are for ugly people. For those as good looking as us its form over function. I salute your car, and your non-intercooled Water Injection.

On the subject of which, you say you're going to be mapping the car without WI? In which case you're setting up for the worse case scenario, which makes a lot of sense, but where are you able to exploit the advantages?

No, we will be relying on the water injection for this set-up. Leaner, boost and more advance being were the advantages of WI are.
But we would set customers cars up, irrelevant of the WI.

[DRAGONFD3S]

Originally Posted by niko

In what extent have you taken aerodynamics around the car into consideration? Obviously it's always a bit of a balance between cooling and drag, especially in the front. You seem to have some sort of diffuser at the back, is it a part of some wider aerodynamic construction, i.e. the air flow under the car? What have you done there? Do you have any pictures?

Thanks in advance.

We have built a full flat floor, the diffuser is not that nice looking but is is at the optimal angle, 9 degrees.
The car will develop lots when we start using it, and things will evolve change, im always open to ideas and learning if anyone has any tips.

[Squizz]

Get racing in the All Nippon Challenge!

Nippon Challenge :: View topic - Mallory photos

[Ed.]

Originally Posted by Squizz

Get racing in the All Nippon Challenge!

Its not racing - Its Time Attack

[Mattyboi]

Originally Posted by Squizz

Get racing in the All Nippon Challenge!

Nippon Challenge :: View topic - Mallory photos

The nippon challenge is shit. It would have folded along time ago if it wasn`t for the mx5`s baulking up the grid. Watching two mega power rx`s and two four wheel drive cars drive around isn`t really fun tbh, the racing of the top four cars isn`t even close. The scooby whooped everyone the whole time and only lost because he spun, he had a massive lead and could have just cruised it tbh.

I`m guessing you own one of the RX7`s mr squizz, if its the green one i was the guy who you were talking to in the scrutineers bay when i took our mx5`s down. I think the top four cars would be better off in time attack, closer fight for places and mroe track time although you`d not get the buzz of racing as such.

[PhatBob]

Originally Posted by DRAGONFD3S

No, we will be relying on the water injection for this set-up. Leaner, boost and more advance being were the advantages of WI are.
But we would set customers cars up, irrelevant of the WI.

Cool, I've seen that Aquamist have some suggestions for detecting flow or lack of, but I guess its a case of ensuring that the system is maintained and well topped up

Kinetico watersoftener for the win

[Mattyboi]

britta water filter jug as the tank maybe

[niko]

Originally Posted by DRAGONFD3S

...The car will develop lots when we start using it, and things will evolve change, im always open to ideas and learning if anyone has any tips.

I'm not an aerodynamics expert whatsoever, so I'm on dangerous waters here. But a bit of theoretical thinking/logic could feed some brainstorming.

Sharp edges tend to have negative implications on overall drag, so unless there's already some technical reason (e.g. cooling?) for these highlighted areas, it might be worth considering to fill them and/or smoothing them:



The same applies to all sharp(ish) edges around the car, since they increase the risk of laminar separation and might disturb air flow around the car in general.

Some guru might slate me on these thoughts, but still worth a try.

[MJG]

Sharp edges are where air from under the car and air from the sides of the car meet, it's like the tip of a knife edge. If they were rounded it would cause turbulance where the air met.

[niko]

Originally Posted by MJG

Sharp edges are where air from under the car and air from the sides of the car meet, it's like the tip of a knife edge. If they were rounded it would cause turbulance where the air met.

True, but that's a fairly simplified approach, since there's much more to it than that also depending on the location of the car. I guess we all agree that turbulent air stream is unavoidable anyway, but I assume Mr. Dragon has done his homework and understands what could be achieved through certain tricks, also found in sports and race cars, F1s, airplanes and others.

But as I said, my ideas were to feed some brainstroming around the subject.

[Mattyboi]

Its sounds reasoning niko, i think the inspiration came from JGTC cars


Shite pic i know (more "tomys my first aerodynamics" pic lol) but you can see the sharpe edges.

[niko]

That's a good picture! As you can see, the area right behind the front (and back) wheel are not 'open' like in the FD, which reduces the underpressure behind the wheel(s) significantly, this effect is also increased through those 'canards' behind the front wheel. Additionally, the air coming behind (or through) the front fenders is a part of the cooling and aerodynamics (i.e. has a function) and, therefore, probably computer simulated to optimise airflow under the bonnet.

Here's the question: is this the case on the FD too? If there is no air coming 'through' the fender, it also generates underpressure behind it, and f*cks up the whole point.

The area behind the rear wheel is also a good example: the skirt is smooth (having the same line as the wheel) and directs the air flow behind the vehicle. It also forms 'a wall' for the air flow underneath the car, preventing it to 'escape' to the sides, just like a BGW or wings on some commercial airplanes have.

[Pulsatingstar]

Nevermind, realised it meant something else. Car looks good.

[Squizz]

Originally Posted by Mattyboi

I`m guessing you own one of the RX7`s mr squizz, if its the green one i was the guy who you were talking to in the scrutineers bay when i took our mx5`s down. I think the top four cars would be better off in time attack, closer fight for places and mroe track time although you`d not get the buzz of racing as such.

Nah. My wife is using an MR2 MK1 Supercharger... I just thought he was looking for options, that's all. I did the Time Attack at Silverstone a couple of years ago.

I was very impressed by how well the RX7's coped in the wet at Mallory.

[Cat Weasal]

Originally Posted by Mattyboi

The nippon challenge is shit. It would have folded along time ago if it wasn`t for the mx5`s baulking up the grid. Watching two mega power rx`s and two four wheel drive cars drive around isn`t really fun tbh, the racing of the top four cars isn`t even close. The scooby whooped everyone the whole time and only lost because he spun, he had a massive lead and could have just cruised it tbh.

Shit? Is that how you describe everything that doesnt suit you and you only?

The Nippon, like every other form of motorsport has to start somewhere, so its only natural that the first year is going to be a hard slog to attract drivers that are already competing at other levels in other championships etc.
I'm sure that the Nippon will get bigger and bigger as the year passes and it will prove the doubters wrong, although overly negative comments like yours wont help it.

You are right though when saying the MX5's take up most of the grid and they have helped the series get off the ground, but they approached the Nippon as they had nowhere to race so it works both ways.

I could also say that Drifting is Shit simply because I dont take part in it, but then i'm a little more grown up than that and can appreciate everyone has their own tastes.

Cheers


P.S Dragon, apologies for the thread hijack and the RX looks very nice

[Stavros]

Woah, talk about joining a forum just to defend themselves...

[mx5turbo]

nice to see her running, last time i saw it it had half a floor in it LOL

kelvin