Comments by "GivenFirstName FamilyFirstName" (@givenfirstnamefamilyfirstn3935) on "Supermarine Spitfire Mk.VIII; The One That Kind of Missed the Bus" video.

  1. It seems crazy that Spitfires were kept on for so long with the extremely tall high altitude optimised boost of the single speed supercharger Merlin 45 in the Mk V, they could not produce their potential maximum power at lower altitudes. The obsolescent Hurricane got the new two speed supercharger Merlin XXs!
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  2. My flying club had a two seater Mk IX hanging about for a few days earning money after the air show, I didn’t know so I saved a fortune but .......
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  3. Altitude dependent. Low down over the Dieppe coastal raid they were in big trouble.
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  4. IIIV is five minus three or two.
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  5. It was their high altitude 50,000 feet fighter, it was their all levels 450 mph on 150 octane fuel fighter, it was their fastest diving fighter, what did all that better?
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  6. Look up the famous formation pic of early Griffon XIIs, one has a fixed tailwheel and the rest have retractable tailwheels. The oddball was built up from a V/IX spec’ Frankenstein up-engined and the rest were made up from the latest Mk VIII spec airframes. Many ‘new’ Spitfires were assembled from upgrades, recycles and major repair of near write offs. The later two stage Griffon XIVs were all developed from the VIII airframe, an airframe update produced the XVIII and XIXs, the last with the original wings but modified wing (higher aileron reversal speed) Mk 21s were produced first and were used in the last months of the war.
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  7. The few post Battle of Britain Spitfire Mk Ibs were the first production cannon Spitfires. C wings were universal and the first were in Mk Vs, C and E wings could have 2 or rarely 4 cannon. The Mk 21 was the first only 4 cannon Spitfire.
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  8. You are confused, the Merlin long nose ones with a tail wheel retract were all VIIIs. The tips were nothing to do with the marks.
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  9. The spars didn’t go into the tips so it was easy to select cropped, normal or extended tips. Extended were supposed to smooth tip vortices when nearing the absolute ceiling in pressurised Spitfires like the Mk VII. They were not very popular. That cropped example is a ‘C’ wing. Cropped tip squadrons tended to keep to lower operations, higher altitude operation earmarked squadrons had normal tips. Most cropped tip Spitfires were Mk XVIs.
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  10.  @rokuth  Look at the rear exhausts relative to the leading edge, the XII and the similar but twin radiator Seafire XVII had a shorter single stage engine.
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  11. The built up fuselage had more keel area for better 60 series engined yaw stability in the turn - especially with the tall rudder - and was faster. Not as pretty though.
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  12. Do you think a Formula One PC or mobile sim makes you a knowledgable racing driver?
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  13. No
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  14. There is a YouTube of one at an airshow where the pilot opened her up too quickly and dug prop tip spiral grooves in the grass, ouch! It had the tail gear doors visible. They are rarer than IX or XVIs as most went overseas.
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  15. DeLux GT versus an L.
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  16. They could never give the Seafire or the later Sea Fury strong enough undercarriage legs. I saw a Buccaneer on a plinth at the Royal Navy Museum at Yeovilton and the undercarriage legs looked like they came off oil rigs.
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  17. There is a British rabid Counter-Bore, they might be the one same person though, ..... if he/they is/are still alive.
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  18. and 109s
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  19. A focal plane shutter sweeps a slit opening over the film. The propeller will rotate during the progress of the slit over the film so the rotation angle of the propeller will be different from the start to the end of the exposure. Shutter speeds with such a shutter changed the slit width. A four blade prop can seem to have bendy blades. A Leica or Contax 35mm camera would have a focal plane shutter, other cameras had iris leaf shutters which exposed all of the film at once. Look at the crescent shaped lower blade at 5:47.
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  20. Look at the down going blade on the starboard side at 5:47, the vertically moving shutter slit has uncovered it at the same time as the inner part of the (anti-clockwise rotation from the front) moving lower blade. At that exact same instant the blades are exactly 90 degrees apart. See how the near horizontal orientation blade appears less bent. The thumbnail pic is seen at 7:02, the starboard down going blade is only slightly bent but its opposite exposed an brief moment later has rotated slightly to the top left by the time the shutter has uncovered its base and its tip has moved well to the left by the time the shutter slit has exposed it, it is much more strongly curved in the image. The propeller had four blades. The prototype’s teardrop canopy looks really nice.
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  21. Prototype K5054 in light blue.
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  22.  @vaclav_fejt  did heads or tails come first?
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  23. Sorry that is pure bollocks.
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  24.  @thephantom2man  Look up test pilot Martingdale diving a Spitfire PR XI to approximately Mach 0.92 with a failed reduction gear and Tobin getting a XI to 0.89 in a controlled 45 degree dive, well over 600 mph. You must be thinking of a different plane.
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  25.  @thephantom2man  AAAGH! I’m slow don’t you know. I think the Zero’s dive problem was ineffective ailerons at very high speed.
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  26. All those with E wings did, 2 20mm and 2 0.5 inch. Look for pics where the long cannon is outboard and there is a blunt stump on the inside.
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  27. Short video?
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  28.  @tnix80  Soviet planes were not crippled by butterfly valve restrictions below full throttle height, look up the supercharger throttle swirl valve of the IL-2. The inlet air path could be matched to the impeller rotation at low altitude reducing the engine power lost driving the supercharger. In the Merlin 45 at low altitude the throttle valve just reduced the pressure before the impeller, the supercharger still accelerated the dead air back up to the limiting manifold pressure absorbing and wasting extra engine power.
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  29. Most Nazi pilots were undertrained cannon fodder, great.
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  30. Greg did a good Mosquito video, he loves Nazi German stuff and the P-47.
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  31. Look up III, VIII and XIV, they are a sort of progression.
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  32. The prototype also had flush exhaust ports and a tail skid, it was still light years ahead of the 600hp Jumo powered Bf 109 B being developed at the same time.
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