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pjvr99

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Posts posted by pjvr99

    Would be appreciated for some of you prop guys

    in C-130 Technical

    Posted

    An interesting \'aside\' to this story - in the cell, one of the things I watch during servicing, is

    the 115v 400Hz digital voltmeter. In a properly serviced and functioning prop, there is a drop

    of 0.6 volts when feathering or unfeathering. Yesterday I noted the voltage drop was still

    1.1v. I believed that during servicing an air-lock had occurred, which is normally cleared by

    running the engine for 10 minutes. However after an hour of run time, I had some streaking

    down the inside/back of the blades and some mess on the lower afterbody. I decided to

    deservice/remove half a gallon of fluid. Lo and behold!! the voltage drop is suddenly 0.6v and

    the feather time dropped to 17 secs from 19. All this from a prop initially refusing to take more

    than 4.5 gallons of fluid .....

    Shakey Brakes

    in C-130 Technical

    Posted

    Vaguely remember this from the single disk B-models - if the protective paint(?)

    coating applied at repair/overhaul was not sanded off, brakes would make quite

    a lot of noise and shuddering until coating WAS eroded off by the pads ....

    Hydraulic Problem or Not

    in C-130 Technical

    Posted

    I haven\'t worked hydraulics for many moons, so forgive a bit of silliness - is it possible that the 9-port (ground check-out) valve is leaking through to the AUX system and temporarily \'hiding\' the fluid there? Even if the accumulators on the UTILITY system were not charged correctly, the amount of fluid being \'hidden\' doesn\'t make sense. Does this aircraft have a separate accumulator for emergency NOSE GEAR extension, off the UTILITY system? If so, is it charged properly?

    SAAF

    in C-130 General

    Posted

    Bob, one of the members on another forum lives near the airbase, says the F\'s are parked in front of the 60Sqd hangars between some B707\'s. They were probably inside the hangar/s when the satellite went over ..... so they been broken up yet. I am trying to find out if anything is planned for them

    SAAF

    in C-130 General

    Posted

    It was 3 B\'s (also BZ now) and 2 F\'s. Too much corrosion to make them a viable option .....

    25° 49.118\'S 28° 13.424\'E BZ on the hardstand (Homebase, AFB Waterkloof, Pretoria)

    25° 49.708\'S 28° 13.093\'E F permanently parked in \'Sinkhole City\' (can\'t locate the other - will put a query out on the local forums)

    25° 49.670\'S 28° 13.861\'E C160Z #331 - 336, 338 & 339

    25° 48.272\'S 28° 09.737\'E C160Z #337 (SAAF Museum, AFB Swartkops, Pretoria

    25° 49.220\'S 28° 13.458\'E a pair of CASA 212/235

    SAAF

    in C-130 General

    Posted

    They most definitely are - were grounded for a while last year with CWB checks, but have all been released since. 2 Underwent full glass upgrade via Marshalls in UK, and the rest were done by DENEL Aviation in South Africa

    AC Instrument and fuel control BUS power

    in C-130 Technical

    Posted

    Dan Wilson wrote:

    What I have always been told (and it makes sense) is they changed it from the inverter position to the Ess AC position for normal ops to save some money, inverters wear out but the AC bus doesn\'t.

    Dan

    Dan, this is the way I also understand it. But the boys here in the \'box do everything on the inverters, supposedly because the inverters are a more stable power supply

    T56-A-15 ENGINE OILS

    in C-130 Technical

    Posted

    MIL-L-7808 is a mineral oil, while 23699 is synthetic, and therefore, never mixed under normal operating conditions. Unfortunately these

    things do happen, and a simple hot drain and flush procedure within

    10(?) flying hours can correct this. While the mil-spec numbers differ,

    the performance of both types is consistant in terms of operating

    conditions and results

    Most operators turbo-jet and turbo-prop engines use Mobil Jet II, Castrol 5000 or O-156. In 20+ years of working RR-Allisons, Mobil

    Jet II has been the oil of choice. It can take a real hammering of heat

    and cold, and extended periods of operation without oil changes. Also, 2 years (or so) ago, the locals changed from O-156 to Jet II, and it

    appears the number of filter changes for filter buttons popping has

    dropped. Also after several hundred hours of operation, the Jet II

    seems to be more slippery than the O-156 was.

    For more detailed info on the oils, go to the Mobil, Shell websites

    and call up the MIL-spec info

    Pic \'o the Week

    in C-130 General

    Posted

    Short a few hours of sleep, so it took me a few moments to realize

    where it was - ClubJed. Must have been a while ago, as the paint schemes

    have changed, and also the ramp layout:cheer: :cheer: :cheer:

    C-130 vs. F-16

    in C-130 General

    Posted

    The TransAll C160 can feather props without shutting down engines - makes

    for a great airshow, belting down the runway at Vmax, feathering just

    before the crowd, then going into a climb at the end, put the throttles

    to the wall, climb to +-1000ft, wing-over and battle-drop, full stop

    landing in less than 1000 feet

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