25 Apr 2024, 13:30 [ UTC - 5; DST ]
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 12:10 |
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Joined: 10/04/18 Posts: 173 Post Likes: +134 Location: Idaho Falls, ID
Aircraft: G-35 Bonanza
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Username Protected wrote: sleeving the aileron cables and doing away with the pulleys is just dumb founding. I could overlook alot of what he has done and chalk it up to just trial and error. But this move is just flat going to kill someone at some point if it ever does fly. Clearly he has no concept of control systems and needs to listen to someone besides his own inner thoughts. I thought that cable sleeving/pulley delete was at the suggestion of the Wasabi guys?
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 12:40 |
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Joined: 03/22/18 Posts: 3808 Post Likes: +2104 Location: Nashville, TN
Aircraft: Lazarus - a B60 Duke
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Sleeved cables are fine for engine controls and such. I don't think I've ever seen it used for a flight control cable. It moves too much and as I'm finding out on my Duke, if it gets crimped AT ALL, it'll lock up tighter than a drum and won't move.
It would have to be BULLETPROOF in how it was routed and mounted where NOTHING would EVER touch the sleeving.
Ever.
Otherwise it's a death trap.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 13:12 |
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Joined: 08/26/15 Posts: 9547 Post Likes: +8782 Company: airlines (*CRJ,A320) Location: Florida panhandle
Aircraft: Travel Air,T-6B,etc*
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Username Protected wrote: Sleeved cables are fine for engine controls and such. I don't think I've ever seen it used for a flight control cable. Yep, I've only seen it used for a trim tab, but never a primary flight control.* With all the different, conventional ways to actuate a (primary) fight control but choosing something so unconventional, this is a really bizarre design decision. I'm scratching my head about the supposed net benefit and I'm coming up with nothing. edit: * reading below, I realize I forgot the obvious example of Bonanza family electric flaps (including Baron/Travel Air/etc.), although wing flaps aren't primary[/i] flight controls[/i]
Last edited on 17 Jan 2020, 14:02, edited 1 time in total.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 13:19 |
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Joined: 12/28/17 Posts: 773 Post Likes: +369 Company: Bellanca Aircraft Location: Washington, OK
Aircraft: 17-30A
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Username Protected wrote: sleeving the aileron cables and doing away with the pulleys is just dumb founding. I could overlook alot of what he has done and chalk it up to just trial and error. But this move is just flat going to kill someone at some point if it ever does fly. Clearly he has no concept of control systems and needs to listen to someone besides his own inner thoughts. I thought that cable sleeving/pulley delete was at the suggestion of the Wasabi guys? I can't imagine wasabi suggestion that, but I could be wrong.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 17 Jan 2020, 13:43 |
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Joined: 10/04/18 Posts: 173 Post Likes: +134 Location: Idaho Falls, ID
Aircraft: G-35 Bonanza
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Username Protected wrote: I can't imagine wasabi suggestion that, but I could be wrong. Hope you are correct. The question mark on my post was there in hopes that someone could easily provide proof otherwise. Maybe it was just implied, in my head, in that Wasabi inspected the thing, found issue with aileron authority and then he started into the sleeved cables.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jan 2020, 09:42 |
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Joined: 09/06/11 Posts: 791 Post Likes: +387
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How about friction and fraying - these are bare galvanized sleeves.
Crazy.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jan 2020, 11:10 |
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Joined: 03/22/18 Posts: 3808 Post Likes: +2104 Location: Nashville, TN
Aircraft: Lazarus - a B60 Duke
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He posted a video last night showing how much the cable sleeves are flexing and noting that it's not an acceptable fix.
I think he's getting frustrated.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jan 2020, 11:56 |
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Joined: 01/18/11 Posts: 7690 Post Likes: +3687 Location: Lakeland , Ga
Aircraft: H35, T-41B, Aircoupe
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My boat uses sleeved cables for the rudder. Best i can tell there is less free play than a cable /pulley system. However they are pull,only, two cables to the rudder bar.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jan 2020, 13:23 |
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Joined: 12/10/07 Posts: 30761 Post Likes: +10761 Location: Minneapolis, MN (KFCM)
Aircraft: 1970 Baron B55
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Username Protected wrote: My boat uses sleeved cables for the rudder. Best i can tell there is less free play than a cable /pulley system. However they are pull,only, two cables to the rudder bar. You can remove almost all of the slop by using two cables, at the expense of more friction and more wear. Also in most boats the consequence of a small amount of looseness or springiness is minor compared to the potential for flutter of an aircraft control surface. And I'd bet that the steering cable on your boat has a much larger diameter than what was used on the Raptor. In any case, critical systems like aircraft control linkages are no place for "cut and try" solutions.
_________________ -lance
It's easier to fool people than to convince them that they have been fooled.
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Post subject: Re: Raptor Aircraft 5 Seat Pressurized 3,600 NM Range Die Posted: 18 Jan 2020, 17:40 |
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Joined: 06/28/14 Posts: 977 Post Likes: +704 Location: Pleasanton , TX (KPEZ)
Aircraft: 1963 Bonanza P35
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Peter does seem frustrated in the video from yesterday. https://www.youtube.com/watch?v=boLj9cU ... e=emb_logoFor those who don't watch the videos I think I understood him to say he may move to a fly by wire set up because the current set up has few good options moving foward. I am starting to sense some real get their itus with Peter. He just wants this thing to fly and it sounds like it needs to fly now. My guess is he is out of money or running on fumes and needs this thing to fly so he can get more funds to continue the project.
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