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 back to the future experiment

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AAR GTDon
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PostSubject: back to the future experiment   Tue Jan 04, 2011 10:12 am

Hi guys, in my limited spare time I thought I'd compare 2 cars on the same track from 2 games. It's difficult to do this and not really fair in any way, but it is interesting to see the differences. I'm using stock DeLoreans at Laguna. If some of you could run the FM3 version I'll run the GT5 version and FM3 version and do some comparisons about the cars and tracks.
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AAR darkestdale
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PostSubject: Re: back to the future experiment   Tue Jan 04, 2011 2:21 pm

I'll do that but i suggest we have someone closer to your skill level to give you a fair comparison.lol. You know who you are guys.lol. Cool

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AAR GTDon
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PostSubject: Re: back to the future experiment   Tue Jan 04, 2011 2:41 pm

We'll post a range of times.

There is one little catch to this, FM3 has the original DMC12, but GT5 has the DMC12 S2 '04. The later version has the spec II up grade 192hp/206tq and 2839lbs, so you'll have to build the FM3 DeLorean up as close as you can to the spec II GT5 car. Best I came up with was 193hp/206tq and 2838lbs while retaining the same 2.8L displacement size engine. 1 more hp and 1 less pound should not be a huge difference.

My best run at Laguna with the all stock DMC12 FM3 car was 1:49.657. My best run with the spec II version FM3 (E-226) car was 1:42.964.
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AAR GTDon
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PostSubject: Re: back to the future experiment   Wed Jan 05, 2011 1:37 am

Well, this is interesting, I just discovered something. I've forgotten about the fact that GT5 cars are not static models, and have to be freshened up from time to time. After changing the oil and making sure the GT5 DeLorean was perfect, I got a better than stock hp/tq reading from it. It should be at 197hp according to the car magazines, but it went up to 201hp/216tq. (the mags don't report what the tq should be) but amazingly, after running 12 hard laps with the car, it got "broke in" (I guess?) and was slightly better again! It now sits at 202hp/217tq!

So, what I'm going to do is build the FM3 DeLorean to 197hp/216tq and re-test it. From what I can tell already, the FM3 track is quite possibly shorter/smaller than the GT5 version of Laguna. Visually the GT5 version looks a lot wider, and feels bigger too. The clue is in the lap times, my perfectly prepared GT5 car runs a slower lap time than the FM3 car even though it has 8 more hp and 10lb-ft more tq, and even though both cars have nearly the same top speed. The FM3 car seems to have more acceleration in the midrange even though it bogs 3rd gear more than the GT5 car. This means that it could be two things working here, a slightly shorter/smaller track, and a faster car running on the smaller track. Because the laps times are not very close. And when I add the hp/tq, the times are going to be even farther apart.
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AAR GTDon
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PostSubject: Re: back to the future experiment   Wed Jan 05, 2011 12:56 pm

Okay, I built a new FM3 DMC12 S2 car that is as close to the real car as I can make it without changing the engine's cubic inches/cc/L. It remains a 2.8L V6 with the correct 197hp, and the calculated 210lb-ft of tq. It is now a E-232 car that weighs 2843 instead of the 2839 it should. But this is as close as I can get it. The only thing I changed was engine parts.

It's interesting that the calculated benchmark tests are way off the actual 'as tested' numbers.

0-60 benchmark is 7.475sec
as tested (with a stop watch) 6.7sec

0-100 benchmark is 25.576sec
as tested (with a stop watch) 17.4sec

benchmark calculated top speed 150.7mph
as tested 147mph

more to come....
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AAR darkestdale
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PostSubject: Re: back to the future experiment   Wed Jan 05, 2011 1:01 pm

Interesting.lol.

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PostSubject: Re: back to the future experiment   Mon Jan 10, 2011 11:36 am

Okay, here are my results:

FM3 DMC12 "S2"
E-232
197hp/210tq
2,843lbs
0-60 6.7sec as tested
0-60 7.475sec calculated benchmark
0-100 17.4sec as tested
0-100 25.576sec calculated benchmark
60-0 133.8ft calculated benchmark
Top speed 147mph as tested
Top speed 150.7mph calculated benchmark
Laguna Seca 1:42.600

GT5 DMC12 S2
202hp/217tq
2,839lbs
0-60 6.4sec as tested
0-100 16.1sec as tested
Top Speed 150mph as tested
Laguna Seca 1:48.108


Very interesting results. The FM3 car seems to be way faster than the GT5 car even though it has less power, and slower test numbers. Somehow, on the respective tracks the FM3 car is almost 6sec a lap faster! That's a big difference, and tells me that the FM3 track is probably shorter than the GT5 track to account for this. Tire compound will make a difference too, but I suspect it is track length at the root. Visually the GT5 track is considerably wider looking, and was probably scaled to allow for its larger grid of 16 cars to exist. With that, it probably is longer as well, and more true to scale.

See if any of you guys can do better than I did in the stock Delorean from GT5.

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PostSubject: Re: back to the future experiment   Mon Jan 10, 2011 12:46 pm

Have to get one of the youngsters to do this.LOL. Smile

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PostSubject: Re: back to the future experiment   Wed Jan 12, 2011 11:33 pm

That because xbox and FM3 is better lol jk although, I will never own a PS3.
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