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#12
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On Sat, 21 Feb 2004 14:06:51 GMT, (d b) wrote:
Using this range, 850 to 2000 pounds on the tail of a towplane is not out of reason. Another place in the installation design of tail hooks calls for loads to stay within 30 degrees of backwards, as I recall. I would try to keep the load as straight aft as possible. That's the other factor of course. I've only seen tailhook installation on taildraggers, but I doubt that, on trigear airplanes, they merely unscrew the tiedown ring and screw in the hook release mechanism. There's probably reinforcement that's added as well, which would make moot any comparison to pulling the plane by the stock tiedown ring. On taildraggers, the line releases are generally attached to the tailwheel spring...which, of course, already has a heavy-duty attachment. Homebuilders and antique owners use the same devices to secure planes during handpropping. See: http://www.bowersflybaby.com/tech/tailhook.html Ron Wanttaja |
#13
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Ron Wanttaja wrote:
: That's the other factor of course. I've only seen tailhook installation on : taildraggers, but I doubt that, on trigear airplanes, they merely unscrew : the tiedown ring and screw in the hook release mechanism. There's probably : reinforcement that's added as well, which would make moot any comparison to : pulling the plane by the stock tiedown ring. FWIW, the banner tower based at my field uses a Cessna Hawk XP. The banner tow point is the tail tiedown. I asked if there are any reinforcements added, and he said "No.". -- Aaron Coolidge (N9376J) |
#14
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Wait till you have to rivet in a new bulkhead...
Michael 182 wrote: I've been using a winch attached to the tail tie-down for six years on two Skylanes. No problems yet. |
#15
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Yeah, I guess that's possible - still, not a lot of pull on the tail
tie-down with the winch. The motor is geared down to go very slowly (about 1 ft/sec, I estimate). I have an 80 foot extension cord on the switch, so I can push the front to get the plane started moving while I handle the towbar. There is a very gradual grade to pull up, but I suspect that tie downs on windy days put more stress on the loop than a steady, slow tug from the winch. Michael "MikeM" wrote in message ... Wait till you have to rivet in a new bulkhead... Michael 182 wrote: I've been using a winch attached to the tail tie-down for six years on two Skylanes. No problems yet. |
#16
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Towhook is available as standard equipment on all C182's. No reinforcements
added. THE 182 has been towing for more than 40 years now. The hook bolts in place of the tiedown ring. It will tow a considerable amount of weight, to understate things a bit. It's bad form to break the rope on tow, but it can happen. In article , wrote: On Sat, 21 Feb 2004 14:06:51 GMT, (d b) wrote: Using this range, 850 to 2000 pounds on the tail of a towplane is not out of reason. Another place in the installation design of tail hooks calls for loads to stay within 30 degrees of backwards, as I recall. I would try to keep the load as straight aft as possible. That's the other factor of course. I've only seen tailhook installation on taildraggers, but I doubt that, on trigear airplanes, they merely unscrew the tiedown ring and screw in the hook release mechanism. There's probably reinforcement that's added as well, which would make moot any comparison to pulling the plane by the stock tiedown ring. On taildraggers, the line releases are generally attached to the tailwheel spring...which, of course, already has a heavy-duty attachment. Homebuilders and antique owners use the same devices to secure planes during handpropping. See: http://www.bowersflybaby.com/tech/tailhook.html Ron Wanttaja |
#17
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I used the tail tie down loop thingie to winch a Piper Saratoga for years.
No problems. As someone else mentioned, the jacking procedure is to put a weight on that loop to hold it down, then use two jacks under the wings to lift all three wheels off the ground. So that loop is pretty dang stout. I wouldn't use it to pull tree stumps, but winching from it is fine. "Tarif Halabi" wrote in message om... Hi, Is it ok to pull my Piper Archer by the tail hook back into the hanger? Does any one know if that will cause any damage? Regards Tarif Halabi C-GQGD |
#18
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I think the geneal concensus is that if the pull is moderate and reasonbly
straight back, you should be fine. Obviously the eyelet has to be strong enough to handle being used as a tie down. Of course, the rub is defining what is moderate and reasonably straight back. Some judgment required there. I'd play it safe - if you really need to winch on it, then rig some way to pull by the gear. - Mark |
#19
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MikeM wrote: Wait till you have to rivet in a new bulkhead... You too, Mike? My bulkhead needed replacing due to cracking around the rudder stop bolts, after high winds forced the rudder violently against the stops (while tied down during a *nasty* t-storm at SLC.) [Always used a rudder lock after that...] Was yours damaged by stress on the tiedown ring? Mark/C182L Michael 182 wrote: I've been using a winch attached to the tail tie-down for six years on two Skylanes. No problems yet. |
#20
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(Tarif Halabi) wrote in
om: Is it ok to pull my Piper Archer by the tail hook back into the hanger? Does any one know if that will cause any damage? Piper says no. [Big surprise.] I know some folks who do it with no apparent trouble. When I needed to do something similar to my turbo Arrow (similar, but somewhat heavier aircraft) I looked at the tail ring and decided there just wasn't all that much strength in what it was tied into. The Piper official recommendation (they even have a drawing somewhere) shows using two leather straps, one around each main. [Remember, this is an Arrow.] I wasn't very found of that either. What I finally rigged was a pull cable out to a roller. Through the roller I threaded another nylon cable to hooks. [Think of a big "Y", where the top of the Y goes to the aircraft, and the bottom goes to the winch.] The hooks simply clipped into the underwing tiedown rings, which (I feel) are tied into a much stronger structure. Another advantage - the whole thing tends to be somewhat self centering. But I also added a remote control to the electric winch, so I could stand in front of the plane with the toebar for steering. Worked really neat for the year or so that I needed it. ----------------------------------------------- James M. Knox TriSoft ph 512-385-0316 1109-A Shady Lane fax 512-366-4331 Austin, Tx 78721 ----------------------------------------------- |
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