bobk wrote:billcummings wrote:If learning from my mistakes will be a good learning tool, I have good news Bob.
There won’t be any shortage of material.
Just be sure they're all
recoverable mistakes!
Fly safe my friend and thanks for all the great humor. I can build a web site, but posts like yours bring it to life!!
More Platform Towing Mistakes (# 852) To Learn From.
It would be too much time to look back through the log books to find out what day this happened on but I guarantee it is etched solidly in my mind.
(Almost to the level of wake up screaming.)
In other posts you may remember me espousing the need for a nose over stop on your platform rig so that the nose of the glider doesn‘t receive damage or leave a mark on a person on the launching rig. It took several painful and scary lessons to come up with my mandatory rule that every platform tow rig must have one installed.
With over eight hundred post on this web forum alone I may be repeating myself. If so just close out and move to another post.
My HG and boat towing friend Don Ray and I were on Lake Pepin which is a wide spot on the Mississippi River between Minnesota and Wisconsin (USA).
I was ready to platform launch with my Airwave Magic 3 equipped with floatation.
Each of us having been gouged and clunked several times I then came up with a short sighted idea.
While we were traveling miles downwind to the cliff we would be towing up in front of, we would tie the keels tail to one of the water ski towing eyes on the stern of the boat.
This would reduce all the blood letting and keep the nose plate of the hang glider from clobbering us. It took a while for this lesson to be beat into our heads.
I started to hook in as Don pointed the boat into the wind at the base of the 400 foot cliff.
Just then another boat turned to intercept us. The Sheriff’s Boat would usually look us over for water craft compliance maybe because we were so very visible with a hang glider on a boat.
But this time it wasn’t the sheriff just a guy wearing what looked like an official hat. His female partner turned out to be a teenaged hottie in a two pieces of dental floss.
An understandable distraction for my driver, Don.
They wanted to get a closer look at our operation.
I said to Don, “So Don, where were we in this preflight list?”
I fully expected his eyes to be torn from their sockets as he pealed them away from all the bare skin.
Don turned to me and said, “ Well you look like your hooked in ok!”
I told him to, “Go To Cruise!”
Once the Hall wind meter was floating at launch speed I yelled over the noise of the 85 hp Johnson Outboard, “Clear!”
Don pulled the nose release and I launched.
Try not to get confused here but even though we were headed west away from Maiden Rock Bluff thing immediately, “Went South.”
The keels tail was tied to the back of the boat.
The rope to the keel pitched the nose of the glider almost vertical then the plugged on tail float tube was stripped off of the glider. I leveled out and looked down to see the tail float and tube thrashing on the water behind the boat.
I was thinking that I would just fly the ridge for my hour and instead of landing deep water I would land on the sand bar at the base of the cliff.
I wasn’t climbing so I signaled for more speed but Don gave me a palm up signal. I was getting all the boat could give. Yet into the wind I wasn’t climbing!!
Something must be wrong so I pointed toward the sand bar and Don headed that way.
When I was in easy glide to the sand bar I released and the glider started to pitch down into a nose dive. I had to let go of the base tube and grab the rear wires to the keel and push myself as far back as I could to stop the nose dive.
In all the excitement due to the loss of pitch control I forget any utterance that I may have made. It probably went,--”GEE WIZ, I’M GOING TO CRASH AND KINK ALUMINUM-----AGAIN!”
I made a few s turns so as not to run out of sand bar while heading into the wind. I didn’t want a water landing with my tail float missing.
When it was time to flare there wasn’t any more room to weight shift rearward.
I ran out a no flare landing and slam dunked the nose plate in the water with the base tube at the waters edge. Lucky! No rocks, just sand!
I unhooked and went behind the glider to find that the keel tube was kinked at a ninety degree angle down. The kink was three inches ahead of the rear anchor bolt for the haul back and rear wires. When I lifted to straighten out the kinked keel tube it snapped off and the glider fell flat on the beach. The king post laid forward and the whole wreck was only about 5 inches off of the sand.
The kinked keel allowed the cross bar to move forward and that was what was the cause of the glider trying to nose dive.
Earlier I had been planning on flying without the tail float for an hour. Holy Smokes.
After that before we ever tied the keels tail down we would first hang a redundant carabineer with a flag to the hang strap so that we couldn’t forget to untie the tail before we hooked in.
This same thing happened to Cindy Drozda at Hobbs New Mexico while platform truck towing. She hurt her knee and glider about a year or so after my tied keel event. Had I not been so embarrassed I should have spread the word. Cindy may never had her accident. (I’m told someone else tied her keel and she wasn’t aware of it being tied.)
If you have a nose over rack you will never need to remember to untie the tail.