Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Tow rope thrower ?  (Read 2177 times)


  • Guest
Tow rope thrower ?
« on: March 28, 2009, 09:59:49 pm »

Just a quick question. How do I make a line thrower, for my tug, that can be used to rescue stranded models ?


  • Guest
Re: Tow rope thrower ?
« Reply #1 on: March 28, 2009, 10:15:59 pm »

I used to be able to toss a grapple from the stern of my destroyer.
It used the co2 from the gun system, but only the small actuator valve.

I mounted a brass tube on the  boat at a 45 angle  and would fire a
small piece of brass rod about, 12mm long, off the boat.
Tied to the top was a line, the short end about 75mm tied to the grapple.
the long end coiled on the deck with the other end tied to a brass loop.
The loop would be locked into a servo operated release hook.

When fired, the brass rod would shoot about 30mm up and about a meter out from
the back of my ship, carrying the grapple and line with it. It was typically thrown over
the bow or stern of the stricken ship, and the grapple would catch a flag staff or bullwork
and the stricken ship could be towed in.  If the stricken ship was caught up and anchored
in millfoil, or other weeds, the brass loop could be released, leaving it floating on a bobber,
and my ship could pull away.


We used it so seldom, that I eventually removed the thrower from the deck.
During a combat, if a team couldn't immediately push another stricken ship in
with thier own destroyer, that ship would be quickly shot up. There was typically
no time to bring a boat in, set up the throwing line and get back before the
stricken ship was targeted and taking heavy damage.  {:-{


  • Guest
Re: Tow rope thrower ?
« Reply #2 on: March 29, 2009, 09:20:11 am »

Sorry Umi, but those CO2 gas powered things are no longer legal in Britain. To even posses one is contrary to the firearms act. Better to have a spring loaded device that can be set to release on operation of a Tx channel..


  • Guest
Re: Tow rope thrower ?
« Reply #3 on: March 29, 2009, 10:47:52 pm »

That's sort of like saying,
"I'm sorry Mr Sikorsky, a lot of people have been injured trying to fly. No more experiments please"

Use the gas that the model aircraft guys use for retracts.

Just pressurize a volume chamber and fire a valve.
It doesn't need much more than a thimble of air to launch the weight.

My ship just happened to have all the air systems for a use with ball bearing guns.
It was convenient for the line throwing apparatus.
Doesn't mean you can't be creative with the means toward your goal.


These are what are used in the ships... Nothing weapon like about them

Clippard valves MAV-2 or Mav-3

Just solder up a small volume chamber out of some copper pipe and add a check valve for fueling. 
add a bit of 2.5mm vinyl air tubing out to your launch positon.



  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,819
  • Location: Blackpool, Lancs, UK
Re: Tow rope thrower ?
« Reply #4 on: April 06, 2009, 10:18:54 pm »

Or go for a servo released mouse trap.  No plumbing skills required.
Think trebuchet.
"With the right tool, you can break anything" - Garfield


  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 237
  • Location: Crewe, Cheshire
Re: Tow rope thrower ?
« Reply #5 on: April 07, 2009, 07:34:33 am »

You could adapt a toy gun that fires those sucker darts most Gadget shops sell them. they could be stripped down hidden under the deck or on superstructure.
operated by servo. I would imagine a cheap thing to try and test to see if it works well.


  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 296
  • Model Boat Mayhem Forum is the Best!
  • Location: Southend-on-Sea Essex U.K
Re: Tow rope thrower ?
« Reply #6 on: April 07, 2009, 06:46:18 pm »

Hi Noah,
I think Robbe do a line thrower check out their site.

Pages: [1]   Go Up