Anybody good at reading Russian?

"Jim Spanfeller" (awesomeaustinv) 01/24/2020 at 14:58 • Filed to: None

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I found this interesting diagram of a home-built (I think) Russian car called the “Anyuta”. I don’t think I’ve ever seen a front suspension setup like that before...

ttyymmnn > Jim Spanfeller 01/24/2020 at 15:04

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Nyet.

Snuze: Needs another Swede > Jim Spanfeller 01/24/2020 at 15:08

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It looks like a reversed quarter-elliptical with a beam axle. It’s what most of your hotrods (32 ford, T-buckets, etc.) use, just flipped up under the frame instead of out front.

Tekamul > Jim Spanfeller 01/24/2020 at 15:09

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That trailing leaf was used forever ago. I don't think it was ever in a 'real' production car. I t’s pretty terrible. I think it was called a quarter elliptical? It was hard as a rock to keep the wheels semi-located under load, so they supposedly road worse than an ox cart.

Jim Spanfeller > Snuze: Needs another Swede 01/24/2020 at 15:10

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Cool! W eird that it faces backwards on the Anyuta... 

RamblinRover Luxury-Yacht > Jim Spanfeller 01/24/2020 at 15:11

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That front suspension is essentially a trailing arm version of the “suicide” front end on a 20s-30s car, rather than leading arm. Relevant term: “quarter elliptical”.

Although, it’s arguably worse on the Russkie because nothing preserves caster angle and only the leaves control lateral motion. Really horrible.

The Panhard Dyna actually used two full leaves crossways (as if quarter elliptic) each side in lieu of A-arms. Which is not as bad even without having track rods, which it did.

Jim Spanfeller > RamblinRover Luxury-Yacht 01/24/2020 at 15:15

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Interesting. I’d only ever seen that Panhard’s suspension setup before on the Xtra... It’s pretty neat.

  https://oppositelock.kinja.com/this-car-is-very-xtra-1840251887

Tripper > Jim Spanfeller 01/24/2020 at 15:22

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Google lens that bad boy

RamblinRover Luxury-Yacht > Jim Spanfeller 01/24/2020 at 15:31

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There are very few trailing arm qua trailing arm front suspensions out there, and for a host of good reasons. The above (for a Beetle) is one of them. The disadvantages include a tendency to exacerbate dive under braking, and requirement for chassis space ahead of the wheel center, both of which are straight-up murder for a traditional front engined car. About the one good quality is that they “drag” over bumps by tracking backward, but Ford and others implemented track rod/LCA suspensions in the 60s that tried to “split the baby”, having a semi-trailing behavior with bumps and not diving *as badly*.

A totally trailing design, though? No way, no how. If you combine that with a lack of caster control (observe that the hot rod suspensions, even so primitive, have control over how the axle tilts), and a beam axle with no link, you have a suspension that not only skews sideways in a turn but also more and more violently tries to pull itself straight the more you braked coming into a turn. And also bump-steers like a motherfucker, and likely has no ability to self-center when accelerating. And, all the dynamics will fuck up as the spring “wraps up” under braking. Basically, you have a car which will kill people. This is a design made in stoic defiance of all idea of ride, drivability, or sanity. “Oh, but it’s light”.

RamblinRover Luxury-Yacht > Tekamul 01/24/2020 at 15:36

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My read is that this thing would be a Corvair-eat-your-heart-out death machine to drive under almost any conditions.

facw > Jim Spanfeller 01/24/2020 at 15:38

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Google says this:

It got a couple other terms as I moved it around , but this was the most I could quickly get at once.

Tekamul > RamblinRover Luxury-Yacht 01/24/2020 at 15:40

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It would be cool to watch the inside tire walk out from under the fender whenever you hit the brakes in a turn though.

RamblinRover Luxury-Yacht > Tekamul 01/24/2020 at 15:45

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While the axle engages in the worst “coil spring wrap up” known to man, and then whipsaws back on release. This making the sharp increase in caster pulling straight you were fighting go back the other direction, and making you oversteer, making the axle walk further... and then the retaining block bolt at the front of the spring shears and you roll and die.

jimz > Jim Spanfeller 01/24/2020 at 16:18

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cantilever leaf spring.  

jimz > ttyymmnn 01/24/2020 at 16:20

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ttyymmnn > jimz 01/24/2020 at 16:27

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That was good. I’m 

jimz > ttyymmnn 01/24/2020 at 16:34

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I first heard it on Sirius in the car, when he got to the “sounds like English played backwards” I was laughing so hard I nearly had to pull over. 

gettingoldercarguy > Jim Spanfeller 01/24/2020 at 17:14

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Pretty sure that's a Gulag dude.

Tapas > Jim Spanfeller 01/24/2020 at 20:31

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Rushian?

I not know what you say, friend. I jolly good golly American, 100%!