Author Topic: Spec Miata buildsheet/discussion  (Read 2860 times)

fndrbndr

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Spec Miata buildsheet/discussion
« on: September 01, 2008, 10:44:50 AM »
Well, I've gone and done it.  This is partly the product of some conversations with Bimmer, so if this sucks, blame him.  If it rocks, of course, it's entirely my idea.   :P  I've always liked spec racing.  The idea that it's all down to the driver/setup is appealing to me.  I've also noticed a couple of things in Forza that strike me as a bit odd.

1.  The cars are VERY light.  It seems all the grip machines are incredibly light.  A mustang with full WR in-game comes to about 2400 lbs.  The Mustang used in the Mustang Challenge is roughly 3400 lbs, and the review of the car in GRM was pretty glowing.

2.  We're "stuck" at certain PI points.  If you want to run an open room, you pretty much have to stay at the top of the letter classes.

3.  There are WAY too many high-end parts on the low-end cars.  It's hard to imagine an entry-level racer using all the carbon fiber and exotic techniques described in the flavor text of the platform upgrades.  I can't imagine a cheap MK2 club racer using a custom gearbox, carbon fiber driveshaft, and all the stuff mentioned in weight reduction.  It happens, sure, but not at the lower levels, and it's certainly not the price of entry that it becomes in Forza.

Solution?  Only the most popular spec series in the United States!  What follows is a Spec Miata, built as close to SCCA regulations as Forza Motorsport will allow.  I didn't really pay any attention to PI.  As a result, these cars are NOT for open-room use.  In fact, they're kind of rubbish in an open room.  If you're looking for a setup, I'm currently running a 53.5% WB and 75% SWR, and it's fairly dialed in.  Note that this build includes a stock transmission, clutch, flywheel, driveshaft, and differential.  These cars are being given away in the online racing section, but here's the build.

Power:  Bone Stock.  (Spec Miatas even run with a restrictor plate, putting the front-running cars at about 115hp)
Platform:  Sport brakes (non-adjustable), Race springs and ARB's, Sport WR.
Tires:  Stock Width Toyo DOT's with Enkei rims (or any other rims you want-SM specifies rims must weigh at least 13 lbs, but I figured this could just be left "free" in the game)
Body:  Mazdaspeed front bumper and spoiler.  (In the future, I may either go back to stock body parts or make non-forza body parts all legal, as you're generally trading off weight vs. drag in all cases, and the downforce doesn't seem to be all that important.
Decal:  Yeah, I put a vaguely SCCA-style number decal on the ones I built.  It's not required, but I think it'll add a neat look to photos of the races.

Well, that's it.  Yes, all of it.  This is, as best I can figure, what cheap, entry-level racing looks like when translated into Forza.  If anyone has any concerns, critiques, or suggestions, they're welcome, but keep in mind that the point isn't to make a fast car.  We're all (theoretically) equally fast in these cars.  The real-world idea of spec racing is to make the checkbook less important and the driver more important.  The checkbook is less of an issue in forza (even poor guys like me are sitting on a couple million CR), but this should provide a nice change of pace.  Please critique, whether by eyeball, by building your own, or just signing up for a free one in the "Spec Miata Giveaway" thread. 
GT  = Fndrbndr79
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #1 on: September 01, 2008, 11:20:23 AM »
I only have ~800k  :-[

If you want, I have an SCCA Club Racing decal I can send over if you want.
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fndrbndr

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Re: Spec Miata buildsheet/discussion
« Reply #2 on: September 01, 2008, 12:48:09 PM »
I only have ~800k  :-[

If you want, I have an SCCA Club Racing decal I can send over if you want.

I kinda made one, but if this one is preferable, that's fine too.  Is it the one from the Spec E30?  Remember, I won't get it til Wednesday night.
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #3 on: September 01, 2008, 12:49:31 PM »
Nah, its from an old project, but it's pretty good  :)

I should be able to send it over today and it'll be waiting for you when you log on for the "first" time  ;D
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #4 on: September 01, 2008, 12:53:27 PM »
This is what it looks like: 
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fndrbndr

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Re: Spec Miata buildsheet/discussion
« Reply #5 on: September 01, 2008, 01:15:02 PM »
Yeah, send it over.  thanks.
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #6 on: September 01, 2008, 01:18:13 PM »
Will Do  :)
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #7 on: September 01, 2008, 08:32:01 PM »
Fndr, I didn't get a chance/forgot to send the decal over today  :-[

I should have time to do it after school tomorrow.
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fndrbndr

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Re: Spec Miata buildsheet/discussion
« Reply #8 on: September 02, 2008, 05:47:57 AM »
No problem.  I won't hit up XBL until about 8pm tomorrow anyway.  Thanks again, btw.
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #9 on: September 02, 2008, 06:50:09 AM »
np, actually finding a use for it is refreshing  :D
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fndrbndr

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Re: Spec Miata buildsheet/discussion
« Reply #10 on: September 02, 2008, 06:52:51 AM »
I know the feeling.  I've got vinyl groups that I never use anymore.  A couple only showed up once.  I've even got a Spanky's Speedshop logo saved. lol
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #11 on: September 02, 2008, 06:57:44 AM »
lol, yep.  It ought to be interesting to see how these things handle different setups - and what will become the "hot" setup.
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bimmerlovere39

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Re: Spec Miata buildsheet/discussion
« Reply #12 on: September 02, 2008, 07:32:45 PM »
Its awaiting comcast  ;D
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fndrbndr

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Re: Spec Miata buildsheet/discussion
« Reply #13 on: September 03, 2008, 05:54:33 AM »
Yeah, I'm intrigued by that myself.  In the real world, the basics are usually setting the cross weight and alignment.  Since Forza does one of those for us (good CW seems to be assumed) and the other is really easy, I'm wondering what will come of this project.
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Blooze

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Re: Spec Miata buildsheet/discussion
« Reply #14 on: September 04, 2008, 09:44:13 AM »
I thought I would toss in a thought for discussion.

I applaud the idea that we are approaching this as John Q Racer with limited bux, and agree that most of the exotic racing parts would be out of the rhelm of fiscal reason for most of the fellers.  However, I think that the Sport Transmission could be considered a posibilty.  The real world equivalent would be swapping out the ring and pinion, something that is not beyond the grasp of most hobbists and can be accomplished in the driveway in a relatively short amount of time.  The parts wouldn't even need to be new - I have gotten 'er done with junk yard parts on other cars.

Some other considerations...
  • As configured, 6th gear is of no value on the car.  It is a full second faster to run 5th only on the Oval.  Shifting into 6th actually costs you TS and results in a full second slower lap.
  • The lag in shift time is quite irritating (I swear, I could double clutch my Dad's old '39 Chevy Pickup faster. ) Going with the Sport setup would reduce the shift time by .040, a scant improvement, but an improvement none-the-less.
  • The Sport Transmission uses the same gears as the stock rig, and would only cost 1 PI point, bring the total to 392.
  • Though they talk a big storm on what is obtained with the Sport Tranny, the reality of it is just a ring and pinion swap.

Please, Please!, don't take this as censorship or disgruntledness in any form or fashion.  I am just offering it up as a point of discussion.

:) $
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