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    Questions about gear speed and flying fixed gear

    As some of you are aware, my Titan T-51 had a gear collapse on initial touchdown -> pilot aborted landing to try to resolve it -> which led to a loss of power because of a bad electrical circuit design and subsequent landing with gear collapse. In other words, the root cause of the incicent was...
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    Where to look for source of temporary electrical system failure?

    My GM LS3 powered Titan T-51 had an emergency onfield landing after all the electrics including ignition to the engine failed. Immediately after landing the panel was completely dead with the master switches on, but an hour later everything was functioning normally when the master switches were...
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    pics from failed Autofight PSRU

    The story on this gearbox is: The contract was for Titan to install a new LS3 engine and gearbox on a T-51 Mustang airframe, replacing Rotax engine. To upgrade the gearbox from the Suzuki 150hp to the 300 hp engine the needle bearings on the idler shaft were changed to roller bearings at the...
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    limit throttle or revs?

    The Titan T-51 with the GM LS3 430hp motor uses a 2.2 ratio Autoflight PSRU that is designed for up to 300hp at 6000 rpm. The prop can spin up to 2550 rpm (so call it 2500,) so the engine can spin to 5500 rpm within that prop speed limit. (Redline on the engine is 6600 or so, so irrelevant.) I...
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    newbie question re prop overspeed with constant speed prop

    The governor on my Titan T-51 seems to be a definite weak point, probably because it shares oil with the gearbox and gets gummed up with metal dust. Anyway, my tentative solution is to treat it like a ground adjustable prop and set the pitch at a midpoint pitch. My question is whether my...
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    PSRU rating adjustment for RPM?

    The Autoflight "small V8, 1.9 ratio" PSRU as used on most Titan T-51s powered by LS3s is rated at 300hp at 6000 rpm. What is it rated at at 4500 rpm? Is it a linear relationship, so 240hp? I gather it is the strength of each pulse that matters, so you have to adjust the rating downward for...
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    Anyone have info on Jihostroj prop governor?

    My Titan T-51 has a Chevy LS3 engine, Autoflight PSRU, and Jihostroj governor. The governor shares oil with the PSRU rather than the engine. The governor started to stick because the PSRU had a bearing installed off center, so it disintegrated and filled the oil with metal debris. My question...
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    Reflections on the 2nd anniversary of my ownership of a T-51

    REFLECTIONS ON THE OCCASION OF MY SECOND ANNIVERSARY WITH T-51 LADY ELAINE At the end of this month it will be 2 years since I purchased my Titan T-51 Lady Elaine, at which time it had been at the Titan hangar for 18 months undergoing the upgrade to the GM LS3 430 motor and “small” Autoflight...
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    Does this hole significantly weaken this structure?

    Someone who worked at Titan Aircraft informed me that another workman had mistakenly drilled a hole in the aileron box of one wing while the wing was being repaired. I measure a 1/2" hole that does not appear to me to significantly weaken the structure. The piece has about 34 hrs on it since...
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    another Autoflight gearbox failure - this time after 34 hrs

    No, this is not the same Autoflight gearbox that failed at 43 hrs. My LS3 430-equipped Titan T-51 flew from Ohio to Los Angeles at 180 KIAS without problems, taking about 12 hrs at 3000 rpm at 22 inches MAP. But after half an hour here the prop governor began to hunt, so the plane was landed...
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