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What We Autocrossers Need

Printed From: West Coast Fieros
Category: Events Section
Forum Name: Performance Driving
Forum Description: Autocross, Road and Drag Racing discussions
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=2530
Printed Date: 22 November 2024 at 12:21pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: What We Autocrossers Need
Posted By: Romeo
Subject: What We Autocrossers Need
Date Posted: 22 June 2011 at 5:22pm

http://www.intercomp-racing.com/Products/SW500_E-Z_WEIGH_SCALE_900.cfm - Scales.

Not the kind that Reptile from Mortal Kombat would rock out, no. Picture what the semis have to stop at prior to bridges. Now, divide that in to four individual plates and give it a full computer.

The system is actually pretty cool. It can determine centre of gravity, weight bias front/rear, left/right, front-left/rear-right and front-right/rear-left. It's accurate to 0.1%. And, of course, it has the weight of the vehicle.

Can you imagine the possibilities? One could adjust around all dead weight (Battery, amps, heater coil, etc) to their own desire. Figure out if their last weight-stripping venture accomplished as much as they thought. See how much one body upsets the balance of the car.

Of course, there is a minute downside... It's $1050. But I mean, hey, divided up between five of us that's only a mortgage payment or two!



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Never shift into reverse without a back-up plan.



Replies:
Posted By: Patrick
Date Posted: 22 June 2011 at 7:12pm

How about four bathroom scales bought at Value Village for 20 bucks tops?

 



Posted By: Capt Fiero
Date Posted: 22 June 2011 at 7:43pm

 

 Or just go here, its the Mecha of the car geek crowd.  Scale sets as cheap as a couple hundred bucks.

http://www.racingjunk.com/search?searchString=scales - http://www.racingjunk.com/search?searchString=scales



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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: AllanJ
Date Posted: 22 June 2011 at 9:00pm
Originally posted by Patrick Patrick wrote:

How about four bathroom scales bought at Value Village for 20 bucks tops?

 

Those and a few measured jigs and you'd be set. 

http://www.rverscorner.com/tongueweight.html - http://www.rverscorner.com/tongueweight.html

 



Posted By: Patrick
Date Posted: 22 June 2011 at 9:19pm
Originally posted by AllanJ AllanJ wrote:

Originally posted by Patrick Patrick wrote:

How about four bathroom scales bought at Value Village for 20 bucks tops?

Those and a few measured jigs and you'd be set. 

http://www.rverscorner.com/tongueweight.html - http://www.rverscorner.com/tongueweight.html

Cool!

 



Posted By: Romeo
Date Posted: 22 June 2011 at 9:38pm
Originally posted by Patrick Patrick wrote:

How about four bathroom scales bought at Value Village for 20 bucks tops?

 


You do realize our cars can have northward of 1200 ibs on each axle? Not too many bathroom scales can take that. Hehe.

Will look in to David's link though, would be really nice to set up 20% on each front wheel and 30% on each rear wheel.



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Never shift into reverse without a back-up plan.


Posted By: Bassman
Date Posted: 22 June 2011 at 9:49pm
VCMC I think has one, or UBC...either way there is one we could find as a club night and weight our cars...I had mine done

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Brian (Bassman)

86 GT Fastback 3.2L

2013 Mazda3 Sport GS SkyActive

[IMG]http://i170.photobucket.com/albums/u243/Bassman68/BassmanSignature.png">


Posted By: Patrick
Date Posted: 22 June 2011 at 9:54pm

Originally posted by Romeo Romeo wrote:

You do realize our cars can have northward of 1200 ibs on each axle? Not too many bathroom scales can take that. Hehe.

Yes, I realize that. Did you look at Allan's link?

 



Posted By: Romeo
Date Posted: 22 June 2011 at 10:33pm

'Aye, I did. But you'll also note that there IS going to be a worse accuracy rating that way. Now, compound inaccuracy for the left-front, then inaccuracy for the right front, on a fairly light section of the car. I think I'd just save up, and actually get the measuring devices. Hell, the first one on that racing junk was $600. Expensive? Yes. Useful for both autocross and off-roading? Definitely.



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Never shift into reverse without a back-up plan.


Posted By: AllanJ
Date Posted: 22 June 2011 at 10:41pm

If you had the right suspension pieces (adjustable ride height at each corner), then you could corner balance your cars with the driver's weight in the seat.  This is not left/right equality.  This is making the crossweights come out fairly equal by adjusting the ride height on a particular corner so the weights would be like this:

Left front + Right rear = Right Front + Left Rear

Then you do your 4-wheel alignment.  This procedure will make your car respond equally left/right.



Posted By: Romeo
Date Posted: 23 June 2011 at 12:18am
I do have coil-overs for the rear, not for the front yet though. Would be nice to move the weight around as much as possible though to sort've "set it neutral", or as close to as possible. That would be the exceptional of matching the weight on both sides of each axle.

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Never shift into reverse without a back-up plan.


Posted By: Bassman
Date Posted: 23 June 2011 at 7:18am

Just get lowering springs and put on KYB's...it's a Fiero, we don't have all the options to adjust, and it really makes a difference with R-Comps, that's where if you want a autox car you should put your money into...I'll still beat ya...lol



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Brian (Bassman)

86 GT Fastback 3.2L

2013 Mazda3 Sport GS SkyActive

[IMG]http://i170.photobucket.com/albums/u243/Bassman68/BassmanSignature.png">


Posted By: Romeo
Date Posted: 23 June 2011 at 8:49am

I lack the finances to constantly replenish ultra-soft slicks. Coil-overs are really cheap and easy to do. And while I will concede that the Koni's are a touch expensive, like the K&N for my truck, at least it's just a one-time expense.

And the Fiero can be adjusted quite a bit. I noticed with the Konis that they're grooved in both bolt holes, so if swinging the bottom out doesn't net you enough camber, you can tilt the top in as well. Caster is still an issue, but Colby managed a work-around for that too.



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Never shift into reverse without a back-up plan.


Posted By: Bassman
Date Posted: 23 June 2011 at 12:14pm

You still need driver skill...and my car is proof that the best investment is tires, you could run OEM suspension with R-comps compared to what you want to do and the R-Comps would win plain and simple 

Now having what you are doing just adds to a performance feel...but you still need skill...Joking with ya buddy...lol



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Brian (Bassman)

86 GT Fastback 3.2L

2013 Mazda3 Sport GS SkyActive

[IMG]http://i170.photobucket.com/albums/u243/Bassman68/BassmanSignature.png">


Posted By: Romeo
Date Posted: 23 June 2011 at 2:50pm
Originally posted by Bassman Bassman wrote:

You still need driver skill...and my car is proof that the best investment is tires, you could run OEM suspension with R-comps compared to what you want to do and the R-Comps would win plain and simple 

Now having what you are doing just adds to a performance feel...but you still need skill...Joking with ya buddy...lol


Oh, I'm fully aware that I am nowhere near your level, nor do I believe that the suspension will make the same level of difference as the tires will. However, when I finally do get good enough to warrant them then I'll still have the suspension and the tires. Well, good and serious, because as it stands, I'm also not really concerned with winning. It's hard to take my odds seriously against 100% race spec BMWs and Honda S2000s in a streetable commuter car from the mid-eighties.

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Never shift into reverse without a back-up plan.


Posted By: Patrick
Date Posted: 23 June 2011 at 3:17pm

Originally posted by Romeo Romeo wrote:

I'm also not really concerned with winning. It's hard to take my odds seriously against 100% race spec BMWs and Honda S2000s in a streetable commuter car from the mid-eighties.

That's exactly how I feel, which is why I expressed myself http://www.westcoastfieros.com/forum/forum_posts.asp?TID=2460&PN=1&TPN=1 - Here with these comments...

Originally posted by Patrick Patrick wrote:

Unless a person really thinks they can win a particular "class" (and receives the million dollar bonus that goes with the distinction), what real difference does it make to a weekend warrior what class they're in?

Speaking for myself, all I'm concerned with is going around the course as fast as I can, how ever I can. I couldn't care less what class I was in.

I know, I have an attitude problem.

 



Posted By: Romeo
Date Posted: 23 June 2011 at 3:37pm
Haha, exactly. Short of dropping race-spec parts in myself, I recognize that I'm already doomed to fail, so I might as well just enjoy my car in street form.

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Never shift into reverse without a back-up plan.


Posted By: Patrick
Date Posted: 23 June 2011 at 3:53pm

Yeah, I don't want to limit how much I enjoy my car 99% of the time just so it's "legal" for a particular class the 1% of the time it's on the track.

 



Posted By: Bassman
Date Posted: 23 June 2011 at 4:32pm
Tris...not comparing driving levels, just a point that drivers skill not matter the condition of the car is the main difference, ask Allan after his driving coach took his car for a spin...lol, let's say Allan was sweating a bit...lol

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Brian (Bassman)

86 GT Fastback 3.2L

2013 Mazda3 Sport GS SkyActive

[IMG]http://i170.photobucket.com/albums/u243/Bassman68/BassmanSignature.png">


Posted By: Romeo
Date Posted: 23 June 2011 at 4:42pm
Originally posted by Bassman Bassman wrote:

Tris...not comparing driving levels, just a point that drivers skill not matter the condition of the car is the main difference, ask Allan after his driving coach took his car for a spin...lol, let's say Allan was sweating a bit...lol

Oh, I know. But still, moneys can't buy skill. But they can buy go fast stuff that lasts, so when the skill level goes up it affects an overall faster vehicle.

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Never shift into reverse without a back-up plan.


Posted By: AllanJ
Date Posted: 23 June 2011 at 7:24pm

Originally posted by Romeo Romeo wrote:

Originally posted by Bassman Bassman wrote:

Tris...not comparing driving levels, just a point that drivers skill not matter the condition of the car is the main difference, ask Allan after his driving coach took his car for a spin...lol, let's say Allan was sweating a bit...lol

Oh, I know. But still, moneys can't buy skill. But they can buy go fast stuff that lasts, so when the skill level goes up it affects an overall faster vehicle.

Kinda....maybe.....maybe not....

My driving coach is an ex-Porsche factory race car driver.  He knows his stuff.  Man, do I have a LONG way to go! 

Problem with buying go-fast goodies before you're ready for them is they can mask many bad driving habits and you won't learn properly.  So you really need to start off with a basic car and learn the basics - properly - and then as you master each level you upgrade the car a bit and continue the learning process.

If you took a guy with no experience and stuffed him in an F1 car, you'd have a mess.  Even after a bunch of coaching because it's hard to learn on a car that responds to instantly to driving inputs when those inputs haven't been tuned at all.

For anyone interested in learning about the art of driving, the best thing to do is to mod your car slowly.  If all you want is a peppy car that handles well, then that's a different story.  Open up your wallet and have fun. 




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