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  1. Today
  2. Maybe the hills of Korea were more extreme than what the Soviets used? It's an interesting question. Did the Marines lose any M26s to the well deck being flooded on the way to Korea?
  3. The whole powertrain, (transmission, differential and final drives) seems to have been overbuilt, or very well designed for its weight class. The powertrain changed very little through its life, and rarely seems problematic on tanks being restored. Most of the time, if it had fluid, remained sealed, and didn't take a round through it, they need little more than cosmetic attention when a Sherman is being restored. This includes the one installed in the M4A3E8 tank used as a bulldozer, to knock down a large section of Oakland California in the 60s. It needed pain job, and they changed the fluid,
  4. By eyeball, I put the Soucy tracks on the Redback at 510-530mm wide. (Noting that this is 100% deductive reasoning/speculation) I think the hull roof height isn’t given as the in-arm suspension allows for variable ride height (though a notional overall height is given), with minimal hull intrusions. From the looks of it, the under hull protection on the Redback is *very* thick. With 125kW more engine output than the Leopard AS1, at a comparable combat weight, but better suspension, I’d like to see Redback do some proper cross-country work. Likely put the old Leopard AS1 to sh
  5. Nope, I just happen to know something about JGSDF era Don't know much about IJA
  6. by that article, the Redback is wider than the Lynx, by the picture the tracks on the Hanwha are as wide as the combo of Lynx track + side skirt. the ride will be different between the 2 vehicles. more rubber in contact + more tension along the track height seems similar, but hawha has both taller hull and nil suspension intrusion into hull. why?
  7. Yesterday
  8. The optical systems placed above each radar array , on the K2 , are those laser Warning arrays or infrared trackers?
  9. Oh, I am aware of the limitations of soviet APFSDS and Sabot design - it's just that it beggars belief that ye olde soviet metal sabots had a better mass fraction despite the shorter rods and the fin situation. The Soviet ones were not made of a particularly weight-efficient material, having been primarily chosen for manufacturability and durability. I also didn't criticize the 130mm Sabot having such a high mass fraction as that thing is still in development, works at unprecedented pressures, and has a notably wider bore. I am not sure how to square that with the nu
  10. And they came up with those "medium tank" concepts... Seriously, whats wrong woth these people?
  11. Bore size plays it's role, but double-ramp sabots, developed for high elongation penetrators, needs to be long to properly support the rod during firing. Sabot design is not all about reduction of parasitic mass, it should be light enough, but it has other important tasks. Old Soviet 125 mm metal sabots got it's merits, but using ring sabots and full-bore fins and low elongation penetrators today might be considered as suboptimal. Changing sabot material, as in case of M829A1>M829A2, is one way to go (btw. where did you find information that sabot of M829A3 is 30% lighter than o
  12. Just my guessing but it might be an average speed including necessary breaks while the pure average speed might be taken only from time spent driving.
  13. I keep forgetting that's the AMPV and the Bradley hull. Seems like a easy enough solution. But alas funding and money n stuff.
  14. I know all about the issues of parasitic mass and the like, 35% just seems to be a very high mass fraction for a modern 120mm (obviously, bore size plays a huge role in 'proper' sabot mass fraction) sabot made using a composite material. Old Soviet 125mm metal sabots had a *superior* mass fraction (approx 30-31%), with a wider bore requiring a larger sabot. For what it is worth, the sabot mass fraction is ~20% of total projectile (Sabot + Rod) mass on 829A3. (Approx 2 kg sabot, calculated from the 4.4kg sabot of 829A1 plus AMPTIAC's numbers of Sabot weight savings generation over g
  15. Ha, thanks! That's awesome, I didn't even realize until you said something. Unbalanced loads are hard on tracks: e.g., the weight imposed by the Tiger Ausf.B's overlapping Staffellaufwerk was biased to the inboard portion of the tracks, resulting in track pins bent to the point that they couldn't be pulled out of the link.
  16. Definitely unexpected results! Interesting assertion about the reduction gear preventing the Pershing's torque converter from slipping and that the Soviets found it performed well on slopes. In Marine Corps Tank Battles in Korea, Gilbert says, "The M26 was a powerful vehicle, but as the tank crews soon discovered, if it stopped on a steep gradient the transmission would slip, and it was difficult or impossible to get it moving again. Help was needed and Eugene Viveiros, who, with one of the Headquarters Platoon [Sherman] blade tanks, attached himself to the 3rd Platoon, was ready to supply it.
  17. Last week
  18. I thought more about the limitation in track width, however it is noit specified in the article whether standard or extended tracks were used on the Sherman.
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