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Ross_McNeill

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Viewing 15 posts - 436 through 450 (of 826 total)
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  • in reply to: Help.. Magnetometer settings Forster #1099764
    Ross_McNeill
    Participant

    Depth with the Ferex 4 is relatively easy with about 10% error.

    Use a close search on 0 to 100nT to identify peak signal value.

    Lift sensor up about a foot and carry out a pass. If the signal peak value has decreased significantly then the anomaly is close to the surface.

    If no significant decrease then the signal is deep and the following method will work.

    Starting from peak signal with the sensor tip close to the ground slowly move directly out until the signal strength drops to 70% of peak. Mark with a non ferrous marker. Return to centre and move directly out 180 degrees to the first direction. Again mark where signal strength drops to 70% of peak.

    The distance between the two non ferrous flags will be depth with about 10% error.

    As Junk Collector says quantity is a completely different matter with no real correlation to signal with compass correction magnets and magnetised carbon rods giving strong returns way beyond their actual size.

    I get better results in the 1 mtr to 5 mtr depth for ferrous with this device
    http://www.schonstedt.com/index.cfm?page=GA-72Cd

    Ferex I use for deeper.

    Regards
    Ross

    in reply to: Cockpits #1124832
    Ross_McNeill
    Participant

    As I said on the Ebay thread..

    The lot also contains a NOS unfitted canopy which the vendor sourced seperate to the original purchase and various other fittings.

    Look at it as cockpit starter kit with added value.

    Ross

    in reply to: Seen On Ebay Thread #1130186
    Ross_McNeill
    Participant

    Hi Dave,

    Bit more spares included than previous.. the canopy alone is a NOS.

    Regards
    Ross

    in reply to: Dornier 17 – RAF Museum Recovery From Goodwin Sands #1157409
    Ross_McNeill
    Participant

    Hi Bruce,

    More down to the seabed location.

    Miss Lollipop had suffered engine fires from flak that would not go out despite triggering the extinguisher and trying to blow them out by diving. She eventually nosed in from 500 ft, 1 mile short of Dover. The crash location was extensively trawled resulting in the fuselage being raised to deck level. All that was left proud were the bomb racks and the waist gun mounts (the strongest structures). The video I have seen shows nets and rope wrapped around the props and engines ripping them from the mounts before the trawl was cast.

    The Ju88 and the Do17 are in the close vicinity of the Goodwins. The sand bottom tends to be barren of weed and rocks and hence not many scallops or fish shoals which mean that trawl activity has not impacted on the sites.

    Regards
    Ross

    in reply to: Dornier 17 – RAF Museum Recovery From Goodwin Sands #1157586
    Ross_McNeill
    Participant

    Cheers Andy,

    Glad to see that Bob had decided to go public domain with the 88 video, I’ve been waiting for that for some time.

    The Do17 and Ju88 are only a few of the located aircraft he also located the dispersed wreckage of B-17 Miss Lollipop and assisted the RN EOD team in their removal of the waist .50 calibre mgs.

    Regards
    Ross

    in reply to: Dornier 17 – RAF Museum Recovery From Goodwin Sands #1158268
    Ross_McNeill
    Participant

    Sealand Tower,

    For wreckage standing proud of the bottom, in reasonable depth, twin beam side scan.

    For buried wrecks, sub bottom profiler, but like ground radar needs serious skill in interpretation.

    I believe the first locators were a licenced archeological dive team but have no knowledge of what subsequent teams visited the site in the last 10 years or so.

    Dave
    I made no comparison with conserved/restored wrecks only gave real example of a similar wreck in local to show possible sea bed condition and in the case ofbthe Ju88 that it is self supporting against quite severe currents.

    Andy,
    Had crossed my mind for both these wrecks but since deterioration was slow was waiting for other developments and creation of suitable electrolytic resto tank facility.

    in reply to: Dornier 17 – RAF Museum Recovery From Goodwin Sands #1158522
    Ross_McNeill
    Participant

    Love the generalisations that it will be just scrap.

    Try looking at some actual pictures from an Aug 1940 wreck in this area before writing off the recovery.

    http://forum.keypublishing.co.uk/showthread.php?p=1628420#post1628420

    Ross

    in reply to: Historical cockpit projects. #1107559
    Ross_McNeill
    Participant

    For the low budget you need to replicate 1940-45 gear rather than buy at the premium price.

    Consider an Anson as a project. Early replica blind flying panels were on sale at Cockpitfest for £35 – real ones £50-70. MkII and Mk20/21 were shaped but tracings are out there to allow a bit of tin bashing.

    Add the surrounding instrument panels, again from tracings as your skills improve.

    Cockpit frame is easily replicated in copper or steel tube with minimal bending and welding skills needed.

    The cockpit floor is wood egg box type construction and late version pilot seats are quite easy to replicate with hand tools.

    Throttle box for the MkII is flat plate held apart with threaded rods, Mk1 and later Mks are folded tin with only one compex casting that is easy to replicate in hardwood laminates.

    Cowl would be the final job and needs a bit of metal bashing skill but is possible.

    Most of the sub assembly work can be stored in a shed/spare room with only a workbench/hand tools needed for the bulk.

    How about this for a project?

    Ross

    in reply to: Cockpitfest 2010 Wish list #1108674
    Ross_McNeill
    Participant

    Olympus,

    The horizontal stab mostly, the other bits come from other sources far and wide.

    Regards
    Ross

    in reply to: Goldfish Club #1126072
    Ross_McNeill
    Participant

    #42-30836
    B-17F-125-BO
    551BS/385BG

    2Lt E R Herron crew

    in reply to: Moggy's attempt to beat the forum #1159567
    Ross_McNeill
    Participant

    Awh..don’t be tight. How about some first names for Jackson such as Richard Brian or something else to narrow it down.

    Ross

    in reply to: Meteror T.7 cockpit structure. #1159626
    Ross_McNeill
    Participant

    Hi Ritch,

    The SAM Modellers guide to the Meteor has a good isometric of the cockpit structure from the illustrated parts catalog.

    No measurements give on this but good enough to visualise the structure.

    After that I suggest a trip to DoRIS at RAF Museum, Hendon where they will have a copy of the APs. Identify which pages you want copied and they will do the rest.

    Regards
    Ross

    in reply to: Wellington z1090 311 squadron. #1160021
    Ross_McNeill
    Participant

    From the draft RAF Coastal Command Losses Vol 2, 1942-43

    25/06/42
    311 Sqn
    Wellington Ic
    Z1090
    KX-Q

    Sgt V J Zezulka
    F/Sgt M Cervinka
    Sgt J Holna
    Sgt A V Jelinek
    Sgt Z Janda
    Sgt L Kriz

    Op: Bremen, RAF Bircham Newton, Take Off 23:27 hrs

    Hit a hut on take off and crashed into Brancaster Bay 23 minutes after take off. The crew abandoned in their dinghy close to shore.

    Kev, to meet the numbers Coastal Command supplied Whitley, Hudson and Wellingtons to augment Bomber Command 1000 bomber raids. Donna Hook and Bircham Newton were used as a bombing up base and forward operating point to join up with the raid routes.

    Regards
    Ross

    in reply to: Cosford to charge for parking from August 1st #1160767
    Ross_McNeill
    Participant

    Just visited the museum today on the way back from a call.

    Heaving with people and directed to overflow parking between the Cold War Hall and Hangar 2.

    No parking charge today where I ended up, staff effectively used directing traffic to overflow areas.

    Well done to the museum for using noggin to get people in and parked rather than maximising on charges.

    Ross

    in reply to: Mk2 Ejection Seat Puzzler #1164785
    Ross_McNeill
    Participant

    OK,

    Mk.2E commonly fitted to Meteor.
    Fixed thigh guards Mk.1E modified by application of conversion set ..although I’ve seen some with the thigh guards also removed.

    Mk.2H commonly fitter to Hunter
    Basically a Mk.2E seat with headrest further forward. Fixed thigh guards. Cord leg restraint by modification.

    Both seat types fitted with Type J PSP, Mk.8 (A for 2E) or Mk.13 Parachute and ZF harness.

    Regards
    Ross

Viewing 15 posts - 436 through 450 (of 826 total)