Body on Frame Sports Cars?

"Jedidiah" (4barrel4speeddualexhaust) 01/22/2015 at 21:53 • Filed to: None

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Does Oppo know any bof sports cars besides the Corvette and the Triumph TRs? If you do know, please mention the type of frame (i.e platform frame, perimeter frame, x-frame).

Just curious and can't find any in google searches. The norm is monocoques or unibodies with subrames, but I like the good old fashioned way.

Aya, Almost Has A Cosmo With Toyota Engine Owned by a BMW. > Jedidiah 01/22/2015 at 22:04

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IF there's 1 thing top gear teach me, most of the TVRs is a Body-on-frame.

Conan > Jedidiah 01/22/2015 at 22:04

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Does the SSR count?

Jedidiah > Aya, Almost Has A Cosmo With Toyota Engine Owned by a BMW. 01/22/2015 at 22:06

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I like TVRs even more now.

Eazy-O > Jedidiah 01/22/2015 at 22:07

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Does the TVR Cerbera count?

Jedidiah > Conan 01/22/2015 at 22:08

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Not as a sports car, but it is certainly bof. I think the Lotus Elan counts though.

Jedidiah > Eazy-O 01/22/2015 at 22:10

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Certainly looks like it does.

Trunk Impaired 318 > Jedidiah 01/22/2015 at 22:10

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Most TVRs!

Aya, Almost Has A Cosmo With Toyota Engine Owned by a BMW. > Jedidiah 01/22/2015 at 22:18

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Yeah. They used the Chimaera frame to build the Hammerhead i-eagle thurst.

Raphael Orlove > Jedidiah 01/22/2015 at 22:23

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Where does body on frame end and a spaceframe begin?

Jedidiah > Raphael Orlove 01/22/2015 at 22:24

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If all the body panels can be removed entirely from the frame I imagine.

DoYouEvenShift > Jedidiah 01/22/2015 at 22:59

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Viper

Ford GT

TotallyThatStupid > Jedidiah 01/22/2015 at 23:01

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Datsun SPL/SRL Roadsters:

And the frame:

Jedidiah > TotallyThatStupid 01/22/2015 at 23:03

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Neat little car. It's like a bof Japanese MGB

ranwhenparked > Jedidiah 01/22/2015 at 23:03

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I believe the Kaiser-Darrin used the Henry J's chassis, and so was BOF.

Tuned-Port-Injected-Rage > Jedidiah 01/22/2015 at 23:03

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Only ones I can think of besides those are the MGA and quite a few TVRs.

TotallyThatStupid > Jedidiah 01/22/2015 at 23:08

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... that is dead reliable. My dad has had his 67.5 1600 for 25 years. It always just works.

Raphael Orlove > Jedidiah 01/22/2015 at 23:37

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I wonder how much of the Audi and Corvette worlds this opens up

Jedidiah > Raphael Orlove 01/22/2015 at 23:41

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Corvette is pretty close to traditional bof, only exception is that the a and b pillar is structural.

NJAnon > Jedidiah 01/23/2015 at 20:21

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What is the difference? I'm a no mechanic oppo. I'd venture to guess the other manufacturing options were used over body on frame in favor of modern benefits.

Jedidiah > NJAnon 01/23/2015 at 22:53

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In body on frame cars, the body is completely removable from chasis for ease of collision or rust repair. Perimeter frames offer good side impact collision protection, but will flex unless they are braced with huge crossmembers. X-frames offer good rigidity and relatively good handling, but poor safety. Full tubular frames offer the best rigidity and safety. Bof is rarely used in modern cars due to cost and weight, but are used for heavy duty vehicles like trucks while some exotics use full tubular construction.

In monocoque cars, the entire body is composed of structural members made from folds in the sheet metal of the panels. The entire body is structural, so a rusted roof or floorpan could cripple the car. It is used to save weight and it is easy to make rigid.

In unibody cars, the front suspension and rear suspension are attached to seperate subframes, which are bolted onto a monocoque passenger compartment. This allows a car to have structural window pillars for safety and keep manufacturing easy and cheap. Disadvantages of monocoques and unibodies are worse ride quality and poor durability.

I prefer body on frame vehicles because I'd rather drive something that will still be around in 40 years.

BiTurbo228 - Dr Frankenstein of Spitfires > Jedidiah 01/26/2015 at 06:50

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There's loads :)

Triumph Spitfire

Triumph GT6

Triumph TR2, 3, 4, 5 and 6

Reliant Scimitar (fibreglass body on that one as well)

Daimler SP250

Austin Healeys

Jaguar XK120/150

Lotus Elan

Lotus Elite

Lotus Europa

Mercedes 190SL

Opel GT

Jedidiah > BiTurbo228 - Dr Frankenstein of Spitfires 01/26/2015 at 20:43

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That's a pretty comprehensive list, but I think the Opel GT is a steel unibody, not a body on frame.

BlurpleToyotaDishwasher > BiTurbo228 - Dr Frankenstein of Spitfires 01/26/2015 at 22:01

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You forgot the Esprit

this is not matt farah's foxbodymiata > Jedidiah 01/27/2015 at 00:42

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Does the 12c count?

Jedidiah > this is not matt farah's foxbodymiata 01/27/2015 at 00:44

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I don't think so. It has front and rear subframes with a carbon fibre tub. It sounds too much like a unibody to me.

this is not matt farah's foxbodymiata > Jedidiah 01/27/2015 at 02:44

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Other than I guess the tub as a floor pan and firewall, all the body panels can be removed, as in that picture. Isnt that kinda the modern equivalent?

BiTurbo228 - Dr Frankenstein of Spitfires > Jedidiah 01/27/2015 at 05:20

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Drat, I was unsure about that one. I was wondering whether it was fibreglass body on a steel backbone...

Jedidiah > this is not matt farah's foxbodymiata 01/27/2015 at 22:38

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I guess. I guess we could call it a seperable multi-piece frame?

this is not matt farah's foxbodymiata > Jedidiah 01/27/2015 at 23:36

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Sounds fair haha.

My point was just that, as opposed to for example the Aventador:

The chassis has nothing that ends up as an external bit of bodywork, much like the old body-on-framers.

This has the added benefit of a droptop version with very little loss in rigidity :)