Meeting of the Minds

Meeting of the Minds

Tuesday, March 27, 2012

The Vamp Mk 1

I'm willing to bet that most anyone who collects GI Joe and organizes their own Table of Organization features the VAMP in some way as their basic ground transport, recon, and mission vehicle for the Joe side. It may be the most ubiquitous vehicle in the Joe motor-pool from the old cartoon series, and as a toy has been re-released a number of times with a number of modifications and repaints.

Cobra also has it's own line of vehicles based off the VAMP mold called the Stinger.



Yeah, the pictures aren't great (and yes, I know the couch is ugly). but anyways, there are a lot of other reviews out there with great photos.  I'm more concerned with the information found on the blueprints:


Let me type this out:

1) OFF-ROAD TIRES ON ALLOY WHEELS
2) URETHANE FENDER FLARES
3) CONCEALED AID KIT AND TOOLBOX
4) 4-WHEEL DISK BRAKES
5) 4-WHEEL INDEPENDENT SUSPENSION
6) 4-WHEEL DRIVE
7) 4.8 LITER V12 FUEL-INJECTED TWIN-TURBO ENGINE; RANGE: 550 MILES; TOP SPEED: 140 MPH
8) REMOVABLE FIBERGLASS HOOD CANOPY
9) HOOD HOLD-DOWN PINS
10) HEAT EXTRACTORS
11) HEAVY-DUTY WINCH
12) TOW BAR
13) HALOGEN HEADLAMP WITH ELECTRIC DEFROSTER
14) MACHINE GUN: 7.63MM/COMPUTER SYNCHRONIZED
15) RAPID-INDUCTION AIRBOOST HOSES
16) CANNON VENTILATOR INTAKES
17) ROLL CAGE
18) BULLETPROOF GAS CANS
19) TOW HOOK
20) PORTABLE GEAR PACK
21) UTILITY SHOVEL

Basically, someone looks like they knew what they were doing when they built this as a high-performance off-road vehicle. It's not a huge stretch of the imagination to conclude that a vehicle like this with that sort of engine could go 140MPH on a straight-away, but for some reason it doesn't give a HP rating. It has good brakes, good suspension, and has of course, four wheel drive.

Now, taking a look at what's under the hood:



I appreciate that someone at Hasbro seems to be doing some thinking about where thing go mechanically. You may have noticed from the outside that the front seems a bit small for the V-12 listed in the blueprints, which would suggest that the VAMP might have been intended as a rear-engine'd vehicle.  This is confirmed when looking under the hood, which doesn't really look like what you would expect out of engine detail. Instead, this appears to be a very large cooling system separated from the engine in back. There are two separate coolant overflow reservoirs, possibly indicating the colling system is divided in two for redundancy (in case one gets shot out, or something).  This suggests the VAMP was designed to go full throttle, all the time.

THE MISSING INFORMATION AND STATISTICS:

Earlier, I mentioned that no HP ratings were made for this vehicle, nor are there any torque ratings (that would have at least given us the hint whether this was gas powered or diesel). This means that we'll have to make them up based in the information we have. First thing: we have to decide what sort of fuel this thing uses.

The military uses a Jet-rated fuel for much of it's combat vehicles called JP-8 http://en.wikipedia.org/wiki/JP-8. JP-8 can be used will a lot of diesel engines, so presumably with a diesel-powered VAMP. So, I am envisioning a diesel powered vehicle for the simple reason that it's what the military prefers. Given that diesel engines are rather flexible in what they can burn, it likely can fuel up at some base and also at civilian pumps where diesel is available.

It was difficult finding a twin-turbocharged V12 diesel engine as small as 4.8L. The closest match I could find was this http://en.wikipedia.org/wiki/Audi_R8_Le_Mans_Concept . The Audi was planned to have a 6liter engine that produced nearly 500HP and over 700lb-ft of torque. I'm going to go with this as a baseline for the VAMP and downsize it based on displacement, and estimate something a little more conservatively tuned for military uses: 350HP with 500lb-ft of torque.

ARMOR AND PROTECTION

I find it strange that a vehicle with a fiberglass hood and urethane fenders would so distinctly mention armored gas-tanks. Fiberglass is light, and urethane can resist the occupational hazards of off-road racing, but it's not anything that would have much effect in resisting damage from small-arms fire. I guess bulletproof gas tanks is something at least since if you're going to come under fire in a VAMP, it's best done with your rear exposed. Though sometimes plastic model toys lack clear plastic for windows for practical reasons, I don't think the VAMP MK I was intended to have a windshield. Likewise, there are no doors. The protection for the rider and driver is almost nonexistant.  With such an exposed interior, taking the time and adding the wieght to armor other parts of the vehicle wouldn't make a whole lot of sense. What does make sense is that the VAMP's defenses depend on mobility and speed instead of armor.

WEAPONS:

I saved the VAMP's armament for last because it's the most vexing thing about the vehicle. I'm glad the blueprints ignored the laserbeam likeness of the weapons on the turret and listed it as a pair of 7.63mm machine guns. I like sticking closer to reality with joeverse munitions, and while i am willing to give more lattitude to COBRA to pursue more sci-fi weaponry, I try and keep GI Joe itself within orthodox NATO supplies. As glad as I am to see the mention of a machine gun instead of some far-flung plasma weapon, this caliber actually makes no sense if we are going with the closest available NATO round.   The 7.63mm mentions I could find on-line seem to suggest something like the the 7.63x25mm pistol cartridge, which would be too ridiculously underpowered to necessitate being placed in a vehicle turret. It's much more likely something like the 7.62x51mm which itself was a follow up to the old .30cal, making it a suitable light machine gun for use against personnel, emplacements, and unarmored vehicles.   So, we're going to go with the 7.62 caliber machine guns on the VAMP.

However, the big problem with the turret is how it's supposedly operated. I'm not sure what "computer syncronized" is supposed to mean, but there is an entry about it at http://gijoe.wikia.com/wiki/V.A.M.P. :



"The computer is smart enough to choose its targets via pre-programming thus allowing the driver to concentrate on maneuvering."


From a technology standpoint, this is nonsense. Having a computer think about what it's targeting, or to be able to target something with a vehicle that lacks any complicated targeting system is too far gone into science fiction for me.   It is much more realistic that there is basic visual imaging built into the turret that feeds info into the passenger's station console.  This sounds like this would be rather crude and disorienting if you fired at something too far off to the sides.  Also, note that the air-hoses that seem to be responsible for aiming the turret would prevent 360 degree rotation and it looks like it's only capable of firing in about a 160 degree arch. This would seem to match, more or less, the usefull line of sight of the passenger.  Now, if there were some sort of helmet that provided a 360 targeting view that would be great, but there's not.  This certainly limits the use of the weapon to targets in front of the vehicle, but you might say this was a reasonable and intended compromize for a low-tech vehicle that has enough speed and agility to keep it's targets in front of itself. 

ROLE

To me the VAMP Mk I serves as a fair basic transportation and utility vehicle. In combat it's something better suited to reconnaissance, pursuit, and hit-and-run tactics than direct engagement.  If I were to change anything I would probably remove the turret and replace it with a rear-firing machine gun mounted up top, and a forward firing machine gun mounted on the hood -both operated by the passenger.  But that's just me.

Monday, March 26, 2012

Monday, March 26, 2012


What this is about: not just your ordinary GI Joe reviews.

This blog is inspired by a combination of two interests I have had since adolescence: G.I. Joe and real world military equipment.  I don't know that I'll be doing much in the way of actual toy reviews, rather, the plan is to examine weapons and vehicles of the Joe Universe to establish performance specifications, perform head-to-head comparisons, speculate on effectiveness, and also look at overall plausibility. For the record, I am not current or ex-military. Nor am I any sort of engineer or fancy myself a closet Tony Stark. I am some guy who flies a few flight simulators now and then and collects GI Joe. Is this presumptuous? Probably, but since I don't see to many other people doing it I thought I'd give it a shot and see how far I get. Worst case, when it comes right down to it, I'm just trying to formulate a 'joeverse' that possesses some basis in reality.

Please note that I welcome any reasoned and cordial feedback, particularily from people who actually know what they're talking about. Here goes:.......