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Sturgeon's House

Toxn

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Everything posted by Toxn

  1. This forum is for terrible movies; reviews and discussion thereof. As 'terrible' is a bit subjective, I urge all posters not to be big whiny babies just because somebody insulted your favourite bad movie. Instead, let's celebrate that such ungainly creatures can exist at all and then dissect and eat them for our collective pleasure.
  2. Toxn

    Competition: Tank Design 2239

    I use the standard sketchup mannequins, which are a bit janky and oversized but useful.
  3. Toxn

    Competition: Tank Design 2239

    Definitely, and slope effectiveness against AP is more than just LOS thickness. I'm just giving the most conservative case here.
  4. Toxn

    Competition: Tank Design 2239

    With the skirts that's very respectable indeed. You could cut those down to 15mm and still be okay. Just to demonstrate: a 50mm side angled at 30' from the vertical, plus a 25mm skirt angled at 0', gets you ~115mm LOS thickness at the end of your 45' arc. At 30' that soars to ~165mm. This means that your tank's side armour is essentially immune to present-gen guns in the 30' arc, and is well-protected against the most common next-gen threat in the 45' arc.
  5. Toxn

    Competition: Tank Design 2239

    From the vertical? Yeah, you could cut it down to 60mm then, if you want to keep current Californian 70mm guns out at any range. Maybe 55mm, if you want to keep them out at battle ranges.
  6. Toxn

    Competition: Tank Design 2239

    I actually couldn't remember why I didn't bother with it in the end (jank ideas appeal to me), so I ran the numbers. On my design it cuts the weight down to... 42 tonnes unstowed.
  7. Toxn

    Competition: Tank Design 2239

    On a side note: I seriously cosidered a quasi all-or-nothing armour scheme where the front and side crew compartment is 25mm, but the turret has over 100mm LOS all around (going up to 150mm on the front) and the turret basket is made from a 75mm casting. Everywhere else gets 10mm. This is also called the "fok julle drivers" scheme.
  8. Toxn

    Competition: Tank Design 2239

    @Sturgeon Just eyeballing your model, it looks like a 65mm glacis (raked back at what looks like 60') is about the minimum required to keep out the Californian long 70s that will be one of the most common threats. So I'd put that as a hard floor. Edit: I'd also say that side armour around the crew compartment should be about the same to keep present-gen 70s out across a decent arc.
  9. Toxn

    Competition: Tank Design 2239

    It's really more efficient (from a weight saving standpoint, at least) to thin side armour, roof armour and floor armour. Much more volume removed for an incremental loss of protection.
  10. Toxn

    Competition: Tank Design 2239

    I'd say that, in this case, a 40 tonne tank isn't the worst choice. The Cascade Republic is fighting a two-front war, with one being defensive and one occurring over open terrain. This favours frontal armour and long engagement ranges (ie: firepower) respectively. Additionally, the Californians are already fielding Sherman analogues, and will be fielding them with long 75 equivalents soon. There is no point up-armouring to a higher weight class that's already a generation behind the enemy's most common AT weapons. Finally; the population and manufacturing capacity at play here (tens of millions of citizens, likely uneven industrialisation given that cars are common but not ubiquitous) mean that the two sweet spots for armoured vehicles are either many-but-very-light or few-but-heavy. This is because your logistics curve is somewhat sigmoidal and there's a zero-sum bottleneck on crew numbers. So trying to field 10 000 30-tonne vehicles when your entire armed forces are probably less than a million men isn't possible. Better to have fewer, exquisite systems or many more very low-capability ones for the same logistics train than get stuck with a force you can't field. Actually; for my money the best bet would be to concentrate on total army mechanisation over building isolated armoured forces, because that provides synergistic benefits well beyond what numbers of vehicles would indicate. Then keep a small core of top-of-the line vehicles around to stiffen advances or enable breakthroughs. This is pretty much the 'Hilux War 2' strategy. For future, though: we might want to think about adding a criterion regarding what the technology of the day can accomplish ITO transmission and suspension components, and grade accordingly as the vehicles bump up against those limits. Edit: having thought about the issue a bit more, I think total mechanisation might struggle a bit ITO fuel supplies. Then again, wood gas is totally a thing and my stereotype of the pacific northwest is that there are a lot of trees there. So your Hilux war army might end up looking like a lot of trucks and Jeeps with wood gas generators slapped on, and a few big tanks who get to hog all the petrol/diesel for themselves.
  11. Toxn

    Competition: Tank Design 2239

    Ha, about all I managed was making the radio a transistor set One interesting thing is how we all seem to have decided on skipping a generation ITO weight class. No 30-tonne vehicles here, just straight from 12 tonnes to 45. One wonders what the crews will make of it.
  12. Toxn

    Competition: Tank Design 2239

    Stock parts and keenness. I'm spent though
  13. That's kind of the fun with these things, though, as your entrants all have different ideas about the process. So some of your entries (not many, though) end up being conservative updates/developments of then-existing models. Others end up sticking together then-existing concepts they like while slapping in a few pet ideas that the author has a boner for. This is where your bullpup Garands come from. Then you get the folk who want to try to retroactively shove modern concepts (eg: smoothbore guns firing APDSFS) into previous technological contexts using a period-plausible justification. Finally, you get the folk who try to 'update' a design they have a fondness for in order to justify its awesomeness. 99% of the time this involves a Tiger or Panther with a turbine engine and modern fire control gubbins.
  14. Toxn

    Competition: Tank Design 2239

    So during a stop you pitch your tent under it?
  15. Toxn

    Competition: Tank Design 2239

    @LostCosmonaut, here's a what I came up with: Light Tank M6 Basic statistics Length: 5.08m, 5.18m (total) Width: 1.65m (hull), 2.6m (total) Height: 2.48m (40cm ground clearance) Weight: 12 t (combat weight) Crew: 4 (commander, gunner, driver, radio operator) Armour 25mm (upper hull front) 25mm (lower hull front) 25mm (hull side forward) 10mm (hull side rear) 10mm (hull rear) 10mm (hull roof) 15mm (hull floor) 25mm (turret front) 25mm (turret front side) 15mm (turret rear side) 15mm (turret rear) 10mm (turret roof) Weapons 40mm L/50 cannon (movement: -15/+30 degrees vertical), 100 rounds stowed M240 machine gun (coaxial), 1600 rounds stowed M2 heavy machine gun (turret roof), 1200 rounds stowed Drivetrain Engine: 5L, 150 HP (112 kW) V8 petrol engine (Chevy small block derivative, because if there's one thing post-apocalyptic Americans will be able to make it's a small-block V8) Power/weight: 9kW/t Max speed (road): 50km/h Max sustained speed (offroad): 30km/h Range: 500km Notes The 40mm gun is essentially a 2 Pounder with access to solid AP, HE and canister (for scrubbing survivalists and tribals off your mate's vehicle). A 55mm gun can be fitted, although it's awkward (as in, the breech is 20cm from hitting the turret ring at certain elevations). The vertical movement is also more restricted (-10/+20 degrees). The hull is mostly welded while the turret, hatches and rear transmission housing are cast. The turret ring diameter is 125cm. The turret drive is manual, but I'd guess that later models include a powered drive of some sort. The weird front hatch design is intended to include a pivot point and hinge. The hull crew is supposed to be able to flip up the hatch for better (but still protected) vision. The transmission would be Cletrac-derived. So don't expect neutral steering. My suggested name for it is 'Fox'. Mainly because this gives the troops plenty of scope for more entertaining nicknames (an older commander's vehicle is a 'Silver Fox', a female commander's is a 'Cougar' and so on). It turns out to be quite a challenge to design something that looks functional but a bit primitive without it looking seriously goofy. Acknowledgements: bAtsi robboposh .. Share link: https://drive.google.com/open?id=1dANQNANroc36WrI_hFOZT-Wt_ZDkhgGb
  16. On the other hand: design-a-firearm competition entrants in the 1980s would be very surprised to see their field dominated in TYOOL 2018 by derivatives of late-50s and early-70s designs.
  17. Toxn

    Competition: Tank Design 2239

    Thanks. Do you have a preference for colour schemes? I'm going with a dark olive green for the moment.
  18. Toxn

    Competition: Tank Design 2239

    SPG and SPAAG variants: M9 “Black Bear” Basic statistics Length: 6.6m (hull), 11.4m (total) Width: 2.65m (hull), 3.25m (total) Height: 2.5m Weight: 51 t (empty weight) Crew: 4 (commander, gunner, loader, driver) Armour 100mm (upper hull front) 100mm (lower hull front) 65mm (hull side forward) 25mm (hull side rear) 25mm (hull rear) 25mm (hull roof) 25mm (hull floor) 100mm (mantlet) Weapons 120mm L/50 cannon: APHE: 23.9kg, 875m/s, 205mm RHA penetration (90’, 500m) APCR: 13.6kg, 1045m/s, 299mm RHA penetration (90’, 500m) HE: 21.7 kg, 500m/s Movement: +/- 12 degrees horizontal, -10 degrees/+30 degrees vertical Browning M2 heavy machine gun (hull roof) Drivetrain Engine: 18L, 500 HP (373 kW) V8 petrol engine (Ford GAA derivative) Power/weight: 7.3kW/t Max speed (road): 35km/h Max sustained speed (offroad): 25km/h Range: 300km Description Sometimes you just need whatever is in front of your position to die. The M9 “Black bear” is designed to make everything in within range of its gun go away as efficiently as possible. Armed with a long 120mm gun (a calibre with special significance to Cascadians thanks to its storied history), this SPG is capable of punishing any presently fielded armoured vehicle out to long ranges with standard APHE. APCR, although not presently required, has also been developed in order to deal with any superheavy vehicles which may be developed in the near future. Finally, the gun has access to a very useful low-velocity HE round, along with more specialised rounds such as smoke and star shells. The M9 is a casemate tank destroyer, with a 50cm superstructure on top of the hull to help accommodate the massive gun. The result is a vehicle is not much shorter than the tank it is based on. In terms of protection; the much higher slope of the upper front plate (60 degrees versus 45 degrees for the M8) provides a significant increase in survivability against threats from the front. Otherwise, the armour is the same as the base vehicle. The superstructure and front plate, when combined with the massive gun, did unfortunately result in a significant increase in weight over the M8. As a result the front suspension needed to be strengthened and a new transmission system needed to be designed for the extra load. The latter was probably a good idea in any case, as this allowed neutral steering to be included in order to assist the gunner. The horizontal and vertical travel of the gun is about average for this sort of vehicle, and is adequate for the task at hand. The interior of the crew compartment is relatively roomy, which is helpful given the increased burden on the loader. The main gun uses two-piece ammunition, which lowers the overall rate of fire somewhat but allows one man to load the main gun. Crew comfort is also increased thanks to a forced-air bore scavenging system, which significantly cuts down on smoke and fume buildup inside the vehicle. Overall; the M9 is expected to serve in limited numbers compared to the M8, but should provide a very useful capability for engaging in defensive operations against heavy armour or offensive operations against fixed fortifications. M10 “Goshawk” Basic statistics Length: 6.6m Width: 2.65m (hull), 3.25m (total) Height: 2.8m Weight: 20 t (empty weight) Crew: 3 (commander, gunner, driver) Armour 25mm (upper hull front) 25mm (lower hull front) 25mm (hull side forward) 15mm (hull side rear) 15mm (hull rear) 15mm (hull roof) 15mm (hull floor) 25mm (turret front) 25mm (turret front side) 15mm (turret rear side) 15mm (turret rear) 15mm (turret roof) Weapons 2x20mm autocannon (movement: -10/+80 degrees vertical) Drivetrain Engine: 18L, 450 HP (340 kW) V8 petrol engine (Ford GAA derivative) Power/weight: 17kW/t Max speed (road): 45km/h Max sustained speed (offroad): 35km/h Range: 500km Description The M10 is simply a light version of the M8 with an open-topped turret designed to hold two 20mm autocannon. The mount is based on the venerable ZSU-23-2 design, and has good movement in the vertical. The electric turret drive can push the turret through a full rotation in around 10 seconds, which assists in tracking fast-moving targets. The M10 is expected to be useful when dealing with low-flying aircraft and infantry, and should fill a useful niche within the armoured force.
  19. Toxn

    Competition: Tank Design 2239

    @LostCosmonaut I'm getting done with my SPG and SPAAG designs and have some keenness left over. Would it be okay for me to make a model of the Cascade Republic's existing tank? I'm guessing that it looks something like a simplified M3 (or perhaps an M22), but you must correct me as necessary.
  20. Toxn

    Competition: Tank Design 2239

    T95 is a great choice. Just leave out the weird rangefinding system...
  21. Toxn

    Competition: Tank Design 2239

    I'm getting the distinct impression that, where my submission ended up being a Panther made out of sensible American bits, Sturgeon's is going to be a 9/10 scale Patton armed with some sort of wonder-cannon. I'm interested to see what the other entrants come up with.
  22. Toxn

    Competition: Tank Design 2239

    Option 3: mother of all lost wax castings.
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