The Miura project begins (Page 21/84)
ltlfrari AUG 04, 11:10 AM
Been following this for a while, cool project. One question though. How does the strength of the front screen/roof area compare to the strength of the original Fiero. Since the A pillars are attached to what appear to be legs pointing rearwards from the frame it just looks (to me anyway) that that whole area would be prone to collapse in a roll over (and having survived one I have a vested interest in car safety!).
Not criticizing the work or anything Archie, I'm always impressed by the work you guys turn out, just interested that all.

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Dave

www.ltlfrari.com

Fastback 86 AUG 04, 12:11 PM
[QUOTE]Originally posted by ltlfrari:

Been following this for a while, cool project. One question though. How does the strength of the front screen/roof area compare to the strength of the original Fiero. Since the A pillars are attached to what appear to be legs pointing rearwards from the frame it just looks (to me anyway) that that whole area would be prone to collapse in a roll over (and having survived one I have a vested interest in car safety!).
Not criticizing the work or anything Archie, I'm always impressed by the work you guys turn out, just interested that all.



Go back to page 4. The short answer is: the owner is fine with it as it is, so don't ask questions.
Archie AUG 04, 01:06 PM
I knew someone was going to ask that again.

Even tho the custom was fine with it as has been stated, we did test it.

Before the chassis went to Powdercoating, we put a dial indicator (with magnetic base) in a position 3" inboard of the corners of the bar along the top of the windshield area. Then we loaded it with about 400 lb & had a total deflection of .043".

That's without the windshield or any of the bodywork on it.

I have not had a chance to take the same test on a stock Fiero chassis for comparison but I think the stock chassis would be about the same.

Archie
psychosurfer AUG 04, 01:37 PM
Seems that a lot of "concern" has been brought up about safety. Last time I checked there were LOTS of motorcycles on the road as well, weird that no one seems concerned about their roll-over safety! LOL!!

Looks GREAT! Nice work as usual Archie!
JazzMan AUG 04, 01:48 PM
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[This message has been edited by JazzMan (edited 04-21-2009).]

ltlfrari AUG 04, 02:06 PM
OK, OK! I did what I shoulda done first and went back over the thread and I now I've seen it again I do remember seeing this question asked before (doh on may part!) so sorry if I upset anyone. I was just curious as to the relative strengths that's all.

jbuell AUG 05, 08:13 AM
It seems to me that the original Fiero structural design achieves some of its rollover safety potential from the rear baskethandle feature which serves partially as a makeshift roll bar .The baskethandle then ties through the roof to the A pillars. But the roof has only 2 lateral sheet metal runners tying it to the A pillars because of the sun roof feature. However , the rear baskethandle "rollbar" while wide is not especially stout in terms of its wall thickness.Nevertheless , tying the rear "rollbar to the A pillars through the roof creates something of a rollcage structure to the original design.
Looking at Archies' design on the Miura project , the rear rollbar feature is double reinforced vertically although not as wide as the original design , is composed of square tubing and the roof has 4 square tube runners tying it to the A pillars instead of just 2 lengths of roof metal. So the essential elements of the "rollcage" design are also present and preserved in Archies' Miura design and in some respects structural elements have been strengthened .
I feel it is this "rollcage" configuration that is common to both designs that confers the relatively good rollover protection reputation acquired by Fieros and not A pillar thickness per se . No convertible or roadster is safe in a rollover . Therefore many incorporate rollbars as an aftermarket installation.
As such I am quite satisfied with the relative degree of safety incorporated into Archies' build and agree with a previous post that a more likely threat will be car jacking .
Austrian Import AUG 11, 10:55 PM
For those who live near Monterey, CA, the Councours week has officially begun:

Exotic and collectors cars will be shown an auctioned off throughout Monterey, Pebble Beach, Carmel, etc.

I already saw a gorgeous Lamborghini Miura S in yellow.

There will be a few more Miuras auctioned off, including Miura S, Miura SV, and Jotta. All of them

Check out: http://www.edmunds.com/insi...mns/articleId=130090



http://www.rmauctions.com/F...D=r103&SaleCode=MO08
This is one of many auction houses present this week.


quote
from: " TARGET=_blank>http://www.rmauctions.com/F...3&SaleCode=MO08"[/B]
385bhp at 7,850 rpm, 3,929 cc transverse mounted alloy V12 quad-cam engine, Weber carburetors, five-speed manual gearbox, independent front and rear suspension with A-arms, coil springs with tubular shocks and anti-roll bars, four-wheel disc brakes. Wheelbase: 98.4"

This was where it all started – the first production automobile to prove itself worthy of the ‘supercar’ tag. Prior to the Lamborghini Miura's arrival in 1967 many sports cars had offered high levels of performance and handling. The Miura however was the first built around the criteria that define our modern concept of the supercar: massive speed and jaw-dropping design coupled with technical innovation; together with a wallet-wilting price tag to which only the wealthiest could aspire.

As legend has it, the founding of Automobili Ferruccio Lamborghini was inspired by Signore Lamborghini’s displeasure with the clutch in his Ferrari, the latest of several that he had owned. As a wealthy industrialist and manufacturer of agricultural machinery, he took his complaint to Signore Enzo Ferrari himself. He may indeed have remained a happy customer after this encounter – if things had gone differently. Instead he felt disrespected, his opinions ignored as those of a simple tractor builder.

Signore Lamborghini became determined at that point to build a better car. He chose the bull as his company’s symbol ostensibly because Taurus was his birth sign but there are many who cannot dismiss the obvious – the bull is a very stubborn animal and more powerful by far than the cavallino (horse). Some might call this hubris, the Italians have another word: vendetta.

Since Signore Lamborghini’s ambitions were large he wanted more than simply to create a beautiful, well-handling sports car – he demanded that the engine be originated by Lamborghini as well. So he enlisted Giotto Bizzarrini – the father of the legendary Ferrari GTO, and one of the engineers driven out of Ferrari during the ‘palace revolt’ of November, 1961, to create an all-new four-cam V-12 engine, initially displacing 3.5 liters. The debut Lamborghini model was the 350GT, featuring an unusual, ‘bubble top’ design with ‘frog eye’ headlights by Carrozzeria Touring. Viewed as an interesting exercise in exotica, it was a remarkably well-balanced package and the engine in particular received accolades from the motoring press.

By 1967 the latest version of this powerplant (by now enlarged to 4.0 litres) was used for an entirely new, even revolutionary new model – the iconic Lamborghini Miura. First shown to a stunned public in March, 1966 at the Geneva Salon, the Miura was the brainchild of seven young engineers working after hours at Lamborghini on this radical new sports car. In fact, credit for the design goes to Marcello Gandini at Bertone, who was only 22 at the time. Under the guidance of New Zealand engineer Bob Wallace, the Miura's chassis was tuned to deliver the handling needed to contain and exploit the prodigious power available. With double wishbone suspension at each corner (in best racing tradition) it was very advanced for a road car. The mid-mounted engine was fitted transversely to allow for a more compact overall stance – an engineering solution inspired by none other than the Austin Mini. The original sketches also called for a glass engine cover and a three-seat layout with the driver in the middle and each of two passengers on either side. Although the latter feature never made it to the production Miuras, it re-emerged on future supercars, most notably on the McLaren F1. The glass cover was also never used but the rear window louvers used in production were an industry first. As the engine was no longer front-mounted but rather ‘posteriore,’ the first generation of Miuras were named P400s. This turned out to be a sensational, trendsetting decision. Almost immediately the young Lamborghini marque leapfrogged to the head of the class, well ahead of both Ferrari and Maserati with this innovative mid-engine configuration.

The specifications are still impressive today: a lightweight frame, all independent suspension, four-wheel disc brakes and a well-proven, wonderful-sounding V12 engine breathing through four triple throat Webers. With 350 brake horsepower on tap, the car was capable of nearly 180 miles per hour in the hands of the brave, which was more than a match for any other road-going production car. Clothed by that unmistakable, heart-stopping shape, formed in aluminum, the Miura was the stuff of dreams.

A process of evolution and improvement was maintained throughout the life of the Miura and in 1968, the ‘S,’ for spinto (or, tuned) version appeared, boasting 370 brake horsepower, updated brakes and numerous other enhancements. Faster, more stable, with better braking and more luxuriously appointed, it was a large step forward from its already magnificent forebear.

Undoubtedly the most accomplished of all Miura variants however was the SV. ‘S’ for spinto, ‘V’ for veloce (fast), it Lamborghini's final evolution of their seminal supercar. Once again launched at the Geneva Salon, in 1971 the SV took a significantly greater stride forward in development terms than the S had been over the original P400. Starting with further development to the chassis, the front and rear suspensions were completely re-engineered to improve handling (most profoundly reducing oversteer). The rear suspension geometry was changed from lower triangles to lower quadrilaterals to handle the much wider, Pirelli Cintauratos on nine-inch Campagnolo wheels. The ventilated disc brakes offered on the later S models became standard. Mechanically, output was increased yet further with the SV pumping out a heart-pounding 385 brake horsepower at 7850rpm.

This was primarily accomplished by enlarged inlet ports, modified cam timing and altered carburetors, while aesthetically Bertone made a number of subtle changes that help differentiate the SV from earlier incarnations. The most striking of these were the now bulging of the rear wheel arches to accommodate the wider wheels, adding a smartly purposeful look to the already distinctive shape. Gandini's distinctive slatted eyelashes were dropped in favor of a smoother, matte black-painted headlight surround and a more integrated front bumper housing larger supplementary lenses. At the rear were revised light clusters which incorporated reverse units for the first time. The cockpit was now fully trimmed in sumptuous leather. During the autumn of 1971, an optional self-blocking ZF differential became available and a dry sump lubrication system was fitted, the latter eliminating the bearing damage that some earlier Miuras had suffered after consistently hard driving. At the end of the day, the Miura SV was the fastest production vehicle on the planet.

Despite the widely held impression that the SV was clearly the best Miura yet, only 150 were built because it was announced alongside Lamborghini's prototype LP500 Countach. Virtually overnight, demand slowed to a mere trickle. Thus, the SV was more or less doomed from the outset which was a great shame as the true potential of this revolutionary car was finally fulfilled. Production ended in early 1973 although it was not until autumn that the last deliveries were made.

“An exercise in automotive art” - Road & Track Magazine, April, 1970

bubbajoexxx AUG 14, 03:01 PM
update needed please
Archie AUG 21, 01:43 PM
We finally got the chassis back from Powdercoating.

The guy that does my Powdercoating is Motorsport Powdercoating at 4152 Industrial Court in Delavan, WI 53115

The owners name is Tim, he's been doing all my Powdercoating for about 8 or 9 years.

He started out working on small items in his garage & has built the business into a huge operation.

I had him take pictures of this process all the way thru the operation.

So before you see the pics I took of the finished product, you are going to get a tour of how Powdercoating is done by a professional.

When they got the chassis they put it in a rotisserie to make it easier for the media blasting. That way they can media blast all the steel properly.













Then they did the media blasting. note some of the pics were taken when there was media dust in the air.





They took the time to blast up around & under all of the chassis & steel work we put in....





more to come......