[AEC] Arbitrary Engineering Challenge #1 [Completed]

Can anyone beat my Dudecia? Thanks to its low weight of only 664 kg it gets 50 mpg (US) / 4.7l / 100 km and does 0-100 kph in 11.3 sec. :grinning:

1 Like

Iā€™m compiling some statistics before I go to bed.

Also, Iā€™m sorry @CVJOINTsequence but you never sent me a car with an engine year of '88 or earlier, so I must :wastebasket: your entry.

This leads to eleven entries for me to judge.

Hereā€™s some stats to tie you over.

Cars without MacPhersons: 1
Cars with MacPhersons: 10
Cars with Torison Beams: 7
Cars with Semi Trailing: 3
Cars with Solid Axles: 2
Best Fuel Eco: 55 Modified for LQ gas
Worst Fuel Eco: 23 MPG
Average Fuel Eco (including modifier): 33 MPG
Cars Using Rear Wheel Drive: 1
Cars Using Transverse FWD: 10
Cars Using Fiberglass :thinking:: 3
Cars Recieved Without Any Design (I thought it was interesting): 2
Average Test Track Time (Rounded): 2:51
Fastest Track Time (Rounded): 2:38
Slowest Track Time (Rounded): 3:16
Inline Engines: 10
Boxers: 1
EcoCarbs: 6
4 Barrels: 4
DCOE :thinking:: 1
Lowest Boost: .01 BAR :laughing:
Highest Boost: .55 BAR

Also, while I gave you statistics, do you want me to be more critical of stuff such as Min/Max, or do you want me to go off of hard stats? Are you interested in my inferences on how you built the car?

  • Judge based on stats alone according to the scoresheet, like a true bureaucrat.
  • Judge based loosely on the scoresheet, but keep in character. (Break the 4th wall when necessary.)
  • Throw out the original scorecard and go based on whatā€™s realistic (while still in character). (4th wall breaks might be common here.)
  • Other Option? (Tell me below.)

0 voters

Iā€™m off to bed, but Iā€™m looking forward to seeing the responses. Hope these stats and the poll can tie you all over while Iā€™m at work.

Wow, 55mpg, and I thought my 50 were hard to beat. Who built that, how did you do it? How much power does that engine make?

Itā€™s you mate. 49.9 MPG + 10% = Basically 55 MPG.

3 Likes

I thought people were going to be building more meme machines lol

Can we get the stats for what types of heads people were using on their engines?

There were almost 2 with DCOE carbs, but I changed my mind in the final design phase. lol

1 Like

Almost every engine was SOHC 3v or 4v. I think there was one pushrod engine too.

That would make a lot of sense, I just went with the pushrod 3 cyl, with cast pistons and a single eco carb because I thought itā€™d be funny to see if it comes close to anything

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Oh :sweat_smile: I forgot about the added bonus :stuck_out_tongue_closed_eyes:

1 Like

I am not exactly surprised mine was the only boxer. I am surprised that Iā€™m above-average for economy despite powering my 2.1L boxer-6 to (I think?) the fastest time. I felt like I needed to at least provide some kind of engine punch (pun not intended) if I was going to go for the city car body type.

Probably lost on price because I did more maxing than minning, IYSWIM :stuck_out_tongue: But Iā€™ve clearly not embarrassed myself. Yay!

Love this challenge and hope we get more along these lines :smiley:

I used overhead cam, 4 valve, 4 barrel carb. 1.5 l 3-cylinder, 55 hp

The First Round

You have your technical documents ready as three men enter the shed near a large, newly constructed shell of a factory, paid by the state of course. Three men enter the room. Peter, the National Head of Accounting. Gregory, current figurehead of the Peopleā€™s Parliment, architect of the current new car production laws, notoriously reckless driver, and war hero. Finally after a small delay, Charles, the National Head of Engineering enters the room, simply asking ā€œwhat do you have to show for usā€. You start shuffling through designs your Junior Engineers have submitted.

Starting off with the design sent in by @mgobla. The Deducia Economy


You: This is the first design my engineers sent me.
G: What is that abomination of a color!
You: We are engineers, not artists sir, but the fiberglass panels tend to come out that way. You can paint over it if you donā€™t like it.
C: Fiberglass? A bit questionable, but Iā€™m listening.
You: I think youā€™ll find the economy ratings to be more than sufficient. A whopping effective 55 MPG when I take your gasoline standards into account.
P: Far more than sufficient. How much do you expect this project to cost?
You: A fair amount. Nothing crazy, but it is worth noting. The best part about the fiber panels is that the people can make their panels in their villages if the proper requisitions are made, great for dispersed production.
P: Yes, but we have the steel presses for the chassis HERE, retorts Peter. My estimates show that each car will be about $20,000.
G: This is nice and all, but how fast can this thing go?
You: Fast enough to get you out of a bind. Sheā€™s powered by a very square 86mm Inline 3. The front brakes are vented, and like to lock first though. We got her around the testing track in 2:50, but the driver was complaining about back problems. It is a 2+2 by the way.
C: I can see why, these dampers are way too hardā€¦ and whatā€™s this, a calculated roll angle of fourteenā€¦ is that a decimal? One point four degrees? My god. That sounds painful.
G: Besides those points, this seems like a very good candidate for adoption.
P: The production cost is high, but itā€™s worth it for our refineries.
C: Iā€™m still skeptical of the springs and the panels, but it seems okay, what do we have next?

Passes to round 2.


Next on the list, you present the concept made by @FitRS. The Katsuro Archan

You: Hereā€™s the next concept I have, this one is fiberglass, but we painted it. She holds a very oversquare I4. This one is 33 adjusted MPG.
C: Interesting. Not as good as the last one, but it still is a respectable value.
P: What about the cost to manufacture?
You: We estimate around $14,900, so itā€™s a quarter the price of the last one.
P: That seems a bit high for my liking.
G: How fast is it?
You: It got around the track in 2:55.
C: Wait a secondā€¦ iā€™m looking at the proposed torque curve for this engine, why does it look so similar to a naturally aspirated engine?
You: Well, there IS a turbo in there, and it gives ā€œan amountā€ of boost, but you need highly sensitive tools to tell.
C: No.
You: Why?
C: No, thatā€™s why. We arenā€™t using a turbine as an excuse for a muffler, itā€™s not even a good muffler next!

OOC: You did use a turbo, but there was also :cheese:. .01 BAR spooling at 3.7k RPM does not work.

Does not proceed to round 2.


C: Okay, whatā€™s next?
You: Well, next we have @Jaimz with the FM Street

C: Is that a lip on there?
You: Yes, it is. It reduces the drag.
C: I know what a lip is for.
P: Whatā€™s the estimated cost here?
You: Well, each car is about $14,200, and they should get a bit above 31 MPG. This one does have corrosion alloyed steel panels, so thatā€™s part of the cost.
P: Unfortunate, couldā€™ve cut costs there, though I suppose itā€™s good for the people to not be driving rust buckets.
G: All they have to do is keep the paint on the car to deal with rust. How fast is this?
You: She got around the track in 2:45, so a good deal faster than what Iā€™ve shown you thus far. Sheā€™s got some power behind her. Some of that is siphoned off by the power steering though.
G: I like it, whatā€™s inside?
You: Inline 4, ecocarb a bit undersquare with forged pistons, and cast everything else.
C: Uhā€¦
G: No, whatā€™s INSIDE.
You: Oh, you mean the seats and such? A reasonably posh interior, with a good cassette player and radio, as well as cutting edge safety.
G: Hmmā€¦
C: Thatā€™s expensive though. The forges wonā€™t be cheap either.
P: Indeed.
G: It sounds interesting, but what else do you have?

OOC: Itā€™s not shown, but forged internals are a rather massive investment. The interior is also a bit overspeced for a shitbox in every possible way, most entries are basic safety. Itā€™s a decent car, but not ā€œthe peoplesā€ car.

Barely doesnā€™t make it to round 2.


You: Okay, hereā€™s one from @VicVictory. He called it the Nuvia Griego 1800T.


G: I donā€™t like the name already. Sounds too Fruinian.
You: Well, sheā€™s a pretty decent design. Five seater, with an Inline 4, and the usual suspension setup.
G: How fast is she?
You: She got a 2:40. Sheā€™s got 110 horses at the flywheel.
G: Quick.
P: What are the numbers?
You: 23 MPG on regular gas.
P: Oofā€¦ compared to the other conceptsā€¦
You: She is pretty cheap to make though, only 12,100!
P: Fair enough.
C: You know, if this was geared better, I bet I could get it to go to 25 MPG, but alas, itā€™s not the case. Those tires look huge too, tone them down and put the right compound on, and it would be great. Itā€™s a no from me.
P: Iā€™m afraid I must agree.
G: Next!

OOC: There were quite a few small mistakes that added up to a big :wastebasket:. The eco could have been improved in a variety of ways. The carb was above stociometric, the tires were wide, and the wrong compound for a shitbox was used. Too much sport, not enough eco. I liked the power you were able to pull off on the engine, but it wonā€™t work here.

Does not make it to round 2.


You: Okay, next on the list is fromā€¦ @reeve509 who forgot to put his name on the blueprintā€¦ (Heā€™s lucky I just caught that now after I wrote this upā€¦ saved from the :wastebasket:)


G: Whatā€™s this one then?
You: This oneā€™s quite a lot like the last one I showed you. Sheā€™s more fuel efficient, she runs on the correct fuel, sheā€™s just 1k more expensive, and has about the same power:
G: Whatā€™s inside this one, how fast? You know the drill.
You: Sheā€™s got a basic seating arrangement, no radio on this one.
G: Fair enough.
C: Sheā€™s got a bit of a tight roll angle, 3.4 degrees Iā€™d guess.
G: Less roll, more power to get around the corners!
C: Ehā€¦ sure, thatā€™s how it works.
P: By more fuel efficent, what did you mean?
You: Sheā€™s got a rated fuel eco of 33.
P: Pretty reasonable.
You: What do you think of this one?
G: Yes.
C: Yes
P: Why not? Weā€™ll fast track this one to a concept. What else do we have?

Passes to round 2 (you got lucky).


You: Okay, next we have a car from @HighOctaneLove. With the Bogliq Bugle.


G: I have a feeling that iā€™m going to like this one.
P: I have a feeling iā€™m not.
You: Okay, this is the next blueprint I have. A rear wheel drive, full steel five seat machine with a pushrod I6 and a few webbers.
C: Excuse me, what?
You: DCOE?
C: I got thatā€¦
P: I thought I wouldnā€™t like itā€¦
G: Go onā€¦
You: Well, she scores a 21 on the MPG test, but sheā€™s been cheapened up by using a solid axle rear, along with the usual MacPhersons. Sheā€™s only 12,500 to make!
C: Hah, no.
P: With that economy? No way!
G: Yes!
C&P: Absolutely not!
G: Fine, but Iā€™m taking the concept anyways.

OOC: This car simply canā€™t compete in terms of fuel economy. Itā€™s more or less a budget premium car.

Does not make it to round 2.


You: Okay, moving onto @ShinyBat. With the Pipi Downtown Turbo.


G: This one looks boring.
P: Itā€™s perfect. Boring is cheap
You: Well, this proposal is fiberglass, with a Boxer 6 and twin eco carb. She scores a 35 MPG.
C: Thatā€™s a very interesting idea you have there. I was not expecting a boxer conceptā€¦
P: How much will this cost us?
You: About 16,400 per car.
P: Itā€™s a bit up there.
C: Well, it should be with the fiberglass panels, and the boxer in there.
G: How fast is she?
You: This is actually my fastest concept and scored 2:38 on the test track.
G: Impressive!
C: Iā€™ve noticed someā€¦ unique features about this concept. Front tires bigger than the rear, full clad tray, the spoiler actually gives downforceā€¦
G: So?
P: Itā€™s over-engineered.
C: Well, yes, but itā€™s nothing I havenā€™t seen before or toyed around with. This thing will want to oversteer like crazy, are we sure we want the people to have this?
G: Yes.
P: Eh, Iā€™ll leave that to your judgement.
C: I am not opposed.

Passes to round 2.


You: Okay, next I have @Xouryā€™s concept.


G: What the hell is that?
C: Thatā€™s whatā€™s colloquially referred to as a ā€œwagonā€ sir.
You: This one is a pretty neat concept. She scored a 27 on the adjusted fuel eco test. She was pretty slow on the track though at almost 3 full minutes.
C: Am I reading this right? Transverse front solid axle?
You: Yes.
C: With the torison beam rear?
You: Yes.
P: How much does this cost?
You: Just $8,170.
P: What!?!
C: Well, she is just a body on frame design, itā€™s bound to be cheap.
G: This is not the car weā€™re looking for.
C: Iā€™d disagree, this is the car weā€™re looking for, itā€™s just for the wrong task.

OOC: This one was really interesting, and I liked it. Doesnā€™t fit the job thatā€™s required though. Too low eco.

Does not pass to round 2, instead, car will be re-purposed as a rural rescue services vehicle.


You: Next on my list is @Arn38fr with the Decarlis EC 30.


G: I like the shape of that one.
You: This is another fiber design. She scores 40 MPG, but she is using regular gas.
P: Good, and bad, go onā€¦
You: Sheā€™ll cost us about 14,800 to make per car.
P: Thatā€™s a tiny bit pricy, but okay.
G: Speed, inside, go.
You: 2:50 on our track, standard four seat interior.
G: Pretty quickā€¦
C: I see no reason to drop this one. Seems pretty bog standard.
P: Iā€™d agree. The economy of these cars wonā€™t hurt us much, and they are relatively cheap.
G: Iā€™ll take one.

Passes to round 2.


You: Next on my list is @WALL, with the Futurama.


You pull out the blueprint.
C: Points at the blueprint. No.
You: I havenā€™t even started yet.
C: I donā€™t even need to see the details.
G: What?
P: I donā€™t understand either.
C: Look at these design specifications, every single part of this car needs to be designed down to the micrometer, and it still bottoms out. We arenā€™t doing this.
P: How much will it cost us though?
C: If I had to fathom a guessā€¦ three times the cost of the last car.
P: Okay, yeah, no.
G: Alright then, moving on!

OOC: Just because you can use quality sliders, does not mean all the quality sliders should be +5. Your car brought up the average price of all the cars by $2,000.

:fire:
:wastebasket:


You: Okay, my last submission is from @CriticalSet9849 with a last second entry.


G: This one is very red.
C: Thatā€™s our default designing color. We can keep it, or we can scrap it, up to youā€¦ Oh, itā€™s a Coupe!
P: Specs please.
You: Okay, this one is another middle of the line car. She scored a 33 MPG on our test, but she needs regular gas. Expected unit costs are $15,400.
P: A little bit pricey, and the eco could be better.
C: Iā€™d have to agree on that one.
G: You know the drill.
You: A 2:50 on the track, four seats, with a quite high spec interior package.
C: Yeah, if we stripped the car down a bit, Iā€™d go for it, but as it stands, too posh.
G: Set this one aside for my collection.
P: Itā€™s decent, but doesnā€™t quite cut it compared to the other concepts.

OOC: Itā€™s a decent build for Automation as far as itā€™s concerned. It just doesnā€™t cut the mustard for what this contest asks for.

Does not pass to round 2.


That leavesā€¦
@Arn38fr, @ShinyBat, @reeve509, and @mgobla for the last round of judgement!
@reeve509 as the only non-fiber entry, so thatā€™s something I should note. I probably shouldā€™ve banned it at the beginning of the challenge, but yet here we are.

5 Likes

First off, nice reviewā€¦wait what am I sayingā€¦it was awful because I got binned!!! :rofl:

Franklin Marshall stopped putting basic anything in when the tech became available. Standard is our basic.

The lip was for showā€¦as is the rear lipped wing. :slight_smile:

And finally I used forged to help with the fuel economy.

And is the Pipi using rubberbands for tyres? Looks like it would deform the wheels if it hit a pothole! :rofl :rofl:

2 Likes

The Pipi has some of the lowest profile tires Iā€™ve seen on a '88 car.

2 Likes

you know, I had a feeling that cutting a v6 in half was a bad idea

2 Likes

I was very much on the fence on passing yours. If you were able to get the eco above the average, or close to it, you probably would win.

I mean you did say it must have a turbo with more than 0 boostā€¦ thatā€™s what you got :rofl::rofl::rofl:

1 Like

Binned in the first roundā€¦ Nice!!! :tada:

Hey @VicVictory, since Iā€™m hosting the instabin, Iā€™ve got some XXXX Golds chillinā€™ in the esky for ya!

Iā€™ll be drinking Bundaberg Ginger Beer and Iā€™ve also got Cascade Apple Cider for anyone whoā€™s been binned so far (that doesnā€™t want some XXXX, lol)

Party at my placeā€¦ Woohoo!!! :sparkles::tada::sparkles:

2 Likes

Party theme: Black eyes and instabins?

I went a bit nuts on the power because somehow, everyone else always squeezes an absolute assload of power into their ecoboxes like this. Iā€™m not miffed about the bin, I never quite know what to expect when making something for a 3rd world market. Iā€™m actually a little proud that I got that beast so powerful and so fast with such a restrictive turbo, a carb, and frankly less than an hour of tuning. lol

1 Like