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Doug Riley
Doug Riley
Platinum Member
Last Activity: Today, 08:32 AM
Joined: 01-11-2004
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  • I'd worry about how accurately you are duplicating the T6 process by heating the material and then letting it simply air-cool. The formal process uses an oven, IIR. You might end up with T- 3.7921 instead of T6. If the re-hardening is not that important to your part, then that's different.
    ...
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  • Doug Riley
    replied to Check out #13
    in News
    Click bait. These pieces are obviously written by a person who knows nothing about aviation, and simply parrots hearsay. That image is of an ordinary trike, not an autogyro.

    The rotors of early 1930's gyros were tube and rag (and wood), complete with suspension and lead-lag cables....
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  • Doug Riley
    commented on a Visitor Message From Helo
    I emailed him, asking if he still has it and wants to sell.

    Best,

    Doug
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  • Helo
    Helo posted a Visitor Message for Doug Riley
    Doug,

    Thanks again for the suggestion. I wrote him a message, but I am afraid, amphib is not a frequent forum visitor (last activity: 09/28/2018).

    Do you think you contact him on his cell and let him know about my interest in his Dominator?
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  • Doug Riley
    replied to Dominator Tandem wanted
    I had a nice one 10-12 years ago, with a Rotax 912S. I sold it to Neil Williams (posts here as amphib). You might ask him if he still wants it, as he also has a Magni....
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  • Doug Riley
    replied to For Sale Rotor Flight Dynamics
    in News
    OTOH, the date of the post is April 1....
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  • if you steer with differential braking using a free-castoring nosewheel, and you lock one main brake, the nosewheel will normally swivel to accommodate the resulting turn.

    The swivel happens through friction between the tire's contact patch and the ground, assuming that the contact patch...
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  • Doug Riley
    replied to For Sale Rotor Flight Dynamics
    in News
    Ernie, I personally hope you find a really good, responsible owner who will do right by this key business....
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  • Brian: My old Dominator (with, of course, a free-castering nosewheel) would go into the most violent shimmy you can imagine. I thought a couple times that the nose leg would break off. Then I discovered the built-in friction collar. Bye, shimmy.

    The friction of the tire on the ground...
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  • Aw, the Good Ol' Days weren't that good. We had vicious conflicts on the old forum, ones that spilled out of the virtual world into the real one. Several years ago, at Bensen Days, I was sure I was going to witness a fistfight among a few of the more belligerent posters and lurkers.

    I sense...
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  • Doug Riley
    replied to Nothing but Gyroplanes
    in News
    Cool. The old familiar sounds and sights ... pusher-prop growl and fluorescent paint jobs. I swear I can smell the damp earth and feel that friendly, jungly humidity. These are magical sensations for those of us way up north. Too bad we have to miss BD this year....
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  • Doug Riley
    replied to Crescendo Build
    What J-John said. Watch that gear geometry.

    Bensen's original landing gear configuration (the "tail sitter") is very right, IMHO. The aircraft sits on its nosewheel and mains with the pilot in the seat, with about 30-40 lb. weight on the nosewheel. As the rotor spools up early...
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  • Doug Riley
    replied to Found this Bensen with floats !
    The stock Bensen with floats has a pretty lethal configuration. The floats act as drag chutes, located far below the aircraft's CG. They try to pull the gyro into a vertically nose-down position. The faster you fly, the worse this effect is.

    The problem existed even with the old 1930's...
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  • Doug Riley
    replied to 4-seat gyrocopters
    Which is why some of us detest heated car seats....
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