Home » I Think This Is A Training Cutaway VW Chassis But I Know It’s Amazing

I Think This Is A Training Cutaway VW Chassis But I Know It’s Amazing

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I know you’re waiting for the final, full wrap-up of the incredible 375,000-mile, $800 NYC taxi cross-country trip. I am, too, and I just did it! But I’m tired, so deeply, deeply tired, and I don’t think I can pull that off right now. And by “right now” I mean way too late at night, after I got to the hotel room with every intent of writing it up, but instead made the I-should-know-better decision to just see how that bed felt.

It felt great.

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Anyway, I woke up and realized, crap, I fell asleep, and I said I’d be back doing Cold Starts today and I haven’t written the final day wrap-up. So I’m doing the shorter thing that we need sooner, this very Cold Start you’re reading right now. But I’ll get that final wrap-up soon! Or at least soon-ish!

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In the meantime, let’s talk a bit about this amazing cut-away teaching/training chassis I saw at the air-cooled Volkswagen show when we were in Effingham, Illinois. I believe, based mostly on the steering wheel, that this is a 1956 to 1959 chassis, and based on the quality of the cutaway work, I deeply suspect this was an original Wolfsburg factory-built training tool.

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Just look at how carefully and how much of this thing is cut open to reveal the secrets within! This isn’t just some bare chassis with a few parts hacked open – this is like a real-world version of a cutaway drawing, precise and careful and incredibly thorough.

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Look at this – even the coil is cut open. Nobody opens a coil to service it, you just swap out a new one. This is just setting the stage here, a bit of showing off, just to make clear how deep this is going to get.

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There’s the fuel pump cut open, with its diaphragm visible. The inside of the distributor is laid bare, too, so you can see the rotor mechanism inside.

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Around the other side of the engine we can see not just inside the generator, but also in the voltage regulator mounted atop it! The carburetor is revealed, too, and the muffler as well.

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Here, let’s look closer at the muffler; I’ve never really seen inside of one of these, except when they’ve rusted holes in them, but then the inside is usually pretty eaten away as well. The exhaust pipes are flayed open, too, revealing those perforated sleeves that give Beetles their distinctive sound.

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Of course the cylinders have been carefully sliced open, with sliced areas being painted red/orange as they are for every cut open bit of this chassis, and here that helps see the cooling fins better, both on the cylinder jugs and on the heads. You can see the flywheel here, as well as the differential gears.

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The starter is opened up, as is the transmission. The boot on the swing axle, too, and the bell housing where the transaxle meets the engine. Everywhere secret things lurk inside other things, metal has been removed to expose all the good bits.

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Here’s more transmission exposure for you to enjoy, especially for you meshed-gear fetishists. And look how the swing axle tube itself is opened to reveal the yellow-painted axle shaft inside!

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Hell, the solenoid is cut open, even!

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Look at those rocker arms! This is starting to feel porny.

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The center tunnel is opened so you can see where the control shafts and cables run; honestly, I wish I had this kind of access all the times I had to replace an accelerator cable.

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Here’s the bundles of metal bars that act as torsion springs in the front axle! You never get to see them from this view!

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…and that’s the inside of the steering box!

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I mean, hell, they even cut open the battery! If someone at the factory had left their lunch on this thing, I’m sure we could count every layer of their sandwich, and each Cheeto would be bisected to reveal their complex inner workings, too.

I’ve seen cutaway mechanic training cars before, but few as carefully and comprehensively done as this one. It’s a real visual (and, I imagine, tactile, but I didn’t test that even though I wanted to) treat, and I wanted to share it with you.

Okay. I’m going to sleep!

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Lot_49
Lot_49
23 days ago

There’s a cutaway 911 in the Porsche Museum in Stuttgart. It is bisected with similar scrupulousness. That museum is wonderful, no matter what kind of cars you might like, or even if you don’t like cars.

Scott
Scott
23 days ago

Agreed that this must be a factory-build, whether for training or marketing or some beer-addled other reason I know not. Extra kudos to the designers/builder for taking the trouble to denote the cutaway lines in a bright color, so the viewer knows exactly where their newfound X-ray vision is working. It’s lovely and yes, almost pornographic to some. 🙂

Dogpatch
Dogpatch
23 days ago

I have a cutaway VW case in my shop that happened when a rod bolt decided to break and exposed the innards for all to see.

Adrian Clarke
Editor
Adrian Clarke
24 days ago

Couldn’t they have have cut away the rest of it so nothing remained.

Captain Muppet
Captain Muppet
24 days ago

One of my first jobs as a new and shiny engine designer was to do the CAD models and drawing for a cutaway show engine.

If you’re cutting through something round, like a tappet or cylinder bore you have to cut just this side of the centreline so the round bit doesn’t fall out.

Fun job, apart from back then having the whole engine open made my workstation run really slowly.

Cerberus
Cerberus
24 days ago

I love cutaways! When I was a kid, people tried to explain how an engine worked a number of times, but it took coming across a motorized cutaway for it to all finally make perfect sense. Really cool.

Abdominal Snoman
Abdominal Snoman
24 days ago
Reply to  Cerberus

I think around 2005 I went to the Deutsche Museum in Munich while on a work trip and one of their special exhibits was cutaways of nearly every jet engine from the 40’s to the 60’s and highlighting how quickly innovations progressed during this period. I am still to this day upset that I showed up to the museum 2 hours before the closed and only found this after an hour of wandering.

Cerberus
Cerberus
23 days ago

Oh, man, I would have loved that exhibit! That sucks to only get an hour of it.

Banana Stand Money
Banana Stand Money
23 days ago
Reply to  Cerberus

I’ve been a sucker for cutaways ever since I started seeing them in popular mechanics and how things work books in my childhood. One of my favorite places to see cutaways is the Udvar Hazy Air and Space Museum outside DC. They have a dozen or more cutaway rocket chambers, cutaway turbines, and cutaway rotary aircraft engines. Definitely worth a visit if you’re ever near the Dulles Airport.

Andy Individual
Andy Individual
24 days ago

That’s some damn fine chainsaw work.

Cars? I've owned a few
Cars? I've owned a few
24 days ago

I see stuff like this, as “simple” as a VW, and scale it up to the Eurocopter EC135 and the Airbus A380 and can’t help but wonder if God Himself muses “Wow, I never thought they’d get that smart.”

The same with computers, software and electronics in general. Chemistry. Physics. Pretty much every discipline.

And then, there are also plenty of examples of stupidity.

Knowonelse
Knowonelse
24 days ago

That. Is really cool! When I was regularly driving one of my air-cooled vehicles on my 100 mile commute (’67 squareback or ’80 Vanagon Westfalia) I obtained parts and occasionally service at a real VW lover and mechanic in Auburn CA, Ray Valero (RIP). Ray also worked on VW race engines making many innovations. His daughter made a cut-away engine for middle/high school and it was in the office as a decoration. At one point in her wrenching career she was a head mechanic at a Mercedes dealership. I still have a set of proper heads for my squareback Ray built, that I haven’t installed as I purchased a rebuilt T3 shortblock instead.

G. K.
G. K.
24 days ago

This is fantastic! This all makes sense—mostly. I’m confused about one thing. With this being a rear transaxle, what’s that shaft that’s disappearing into the chassis tunnel on the rearward side of said transaxle? The one that’s painted the same color as the chassis itself? Is it part of the transaxle, or a PTO for some other component?

Papa Bruyant
Papa Bruyant
24 days ago
Reply to  G. K.

Believe that’s the shift rod (if I’m looking at the same part you’re referencing).

Jason Smith
Jason Smith
24 days ago
Reply to  Papa Bruyant

It is indeed the shift rod. Connects the gear selection lever to the input shaft of the transmission. (Source: I had to replace a bushing on mine last week.)

G. K.
G. K.
24 days ago
Reply to  Papa Bruyant

Thanks! I think you’re right. I forgot how primitive these are, and that they’d use rods rather than cable linkages, as do modern mid- and rear-engined manual-transmission cars (like the 911 has since the 1970s)

Car Guy - RHM
Car Guy - RHM
24 days ago

My high school machine shop did a cut away engine as a project, but a full chassis is going pretty far if it wasn’t done by VW.

Hoonicus
Hoonicus
24 days ago
Reply to  Car Guy - RHM

Very cool! I think I only got half a year of metal shop and wood shop in 1980. I spent a lot of time at the public library reading popular mechanics, popular science, aviation week&space technology, and any car magazines I could find.
This cut away is a masterpiece! and should be required viewing by all high schoolers, if not junior high, to spark interest and understanding in mechanical knowledge and feed aptitude.

Jay Vette
Jay Vette
24 days ago

Now let’s get a cutaway model of the VW bratwursts

Andy Individual
Andy Individual
24 days ago
Reply to  Jay Vette

Do you really want to know how the sausage is made?

10001010
10001010
24 days ago

The chassis is amazing but we’ve seen cutaway batteries on this site before.

DialMforMiata
DialMforMiata
24 days ago
Reply to  10001010

DAMMIT! Beat me to it!

Flyingstitch
Flyingstitch
24 days ago
Reply to  10001010

It’s early, but COTD.

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