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Author Topic: Flying Kesterl  (Read 2585 times)

poll

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Flying Kesterl
« on: July 29, 2012, 08:16:03 PM »


          Hi Folks.

          Flying Kesterl with chip barge at Balne Moor m.b.c.

          John
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billa65t

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Re: Flying Kesterl
« Reply #1 on: July 29, 2012, 09:49:04 PM »

Good pics John nice looking tug
what is the model and what motors are you running in her
Keep the photo's coming  :-))
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Re: Flying Kesterl
« Reply #2 on: July 30, 2012, 05:13:26 PM »


 Hi billa65t
 I bought the tug as the Karl. Repainted her to the Howard Smith livery. rearranged the Graupner shottles ( Large size ) so I could get more battery's in
 2x6v 10 amp, and also run it on brushless motors.
 
 Regards

 John
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deadwood

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Re: Flying Kesterl
« Reply #3 on: July 31, 2012, 12:25:22 AM »

Beautiful model of an ATD tug! :-))
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billa65t

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Re: Flying Kesterl
« Reply #4 on: July 31, 2012, 10:08:59 PM »

Very impressive John,

certainly seems capable of doing the job
must handle well and be very maneuverable with those Shottles
  :-))
Regards
Bill
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poll

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Re: Flying Kesterl
« Reply #5 on: August 01, 2012, 11:16:00 PM »


  Hi Bill.
  Some more photos from today at the pond.
  Regards

  John
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deadwood

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Re: Flying Kesterl
« Reply #6 on: August 02, 2012, 07:58:25 AM »

Nice tow line.

The only thing that puzzles me is, why have her builders (i.e. Mützelfeld-Werft, here in Germany, according to Shipspotting captions to the odd five photos of FLYING KESTREL posted there)
decided to mount the towing winch at an angle of abt. 40° (as it looks to me) from the right-angled to the center line position, which seems more natural to me?
With that inclined position I would think one always has an additional sine traversal tow force component (when the tow line is aligned to the tug's centre line) to account for.
Were the builders restricted in free deck space?
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Re: Flying Kesterl
« Reply #7 on: August 02, 2012, 11:02:50 AM »


            Hi Deadwood.
   Sorry could not help you on that one. May be to give room for when they lift the push knee's on & off. Here is a photo of the full size tug. The flying
   Osprey.
 
   John
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derekwarner

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Re: Flying Kesterl
« Reply #8 on: August 02, 2012, 11:37:36 AM »

Guys....I have zero knowledge of modern tug design.....but why is the aft towing winch angled off at say 30 degrees to the axis of the vessel?  :o ....Derek

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Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

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Re: Flying Kesterl
« Reply #9 on: August 02, 2012, 12:41:36 PM »


    Hi Derek.
    Deadwood has asked the same question, don't know as yet.

    John
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sailorboy61

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Re: Flying Kesterl
« Reply #10 on: August 02, 2012, 02:54:49 PM »

Guys....I have zero knowledge of modern tug design.....but why is the aft towing winch angled off at say 30 degrees to the axis of the vessel?  :o ....Derek



In my ignorance I would say it doesn't matter where the winch is located, once towing (harbour tug) the force would generally be acting through the gog or panama fairlead at the stern which is effectively where the force would then be appied back to the tug. Similar to a weight being lifted from a hold or dock, the weight 'acts' at the head of the derrick or crane on the ship.

That would be my guess in any case, somewhere along those lines. The winch just needs to be secured firmly to the deck as it would be in any location.
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poll

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Re: Flying Kesterl
« Reply #11 on: August 02, 2012, 06:39:56 PM »

Nice tow line.

The only thing that puzzles me is, why have her builders (i.e. Mützelfeld-Werft, here in Germany, according to Shipspotting captions to the odd five photos of FLYING KESTREL posted there)
decided to mount the towing winch at an angle of abt. 40° (as it looks to me) from the right-angled to the center line position, which seems more natural to me?
With that inclined position I would think one always has an additional sine traversal tow force component (when the tow line is aligned to the tug's centre line) to account for.
Were the builders restricted in free deck space?

Hi Deadwood & Derek.

The reason for the winch been at a angle was so they could use the capstons on the winch when they coupled up to the barges. When Howard Smith bought the tugs they moved the winch so they could use this  facility.
Hope this helps clear things up.

John
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