Model Boat Mayhem - Forum

Please login or register.

Login with username, password and session length.
Pages: 1 2 3 4 5 [6]   Go Down

Author Topic: 71" (1.8m) TID Tug Build  (Read 28221 times)

Captain fizz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 280
  • Model Boat Mayhem is Great!
  • Location: Oakham Rutland
Re: 71" (1.8m) TID Tug Build
« Reply #125 on: January 29, 2018, 11:29:50 PM »

Your build is coming on a treat Daz.Love the straps on the rudder and skeg, it's the details that count! :-))


Simon
Logged

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #126 on: January 30, 2018, 12:04:10 AM »

Your build is coming on a treat Daz.Love the straps on the rudder and skeg, it's the details that count! :-))


Simon


Thanks for the kind words :) ...yup its coming along slowly!


New link for video as I cant edit previous post:


http://www.tizdaz.co.uk/forum/showthread.php?tid=12

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #127 on: February 12, 2018, 06:19:28 PM »

So today was THE day!

Decided to go New Brighton with my pops to give her a water test (moment of truth as they say!) ..Turned out great, Still needs more ballast as I expected, But the 12-volt is plenty so no need for me to mess about with 24-volts :)

Anyway here's a quick vid!


http://www.dailymotion.com/video/x6enou8

nemesis

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 471
  • Location: North Shields. Northumberland
Re: 71" (1.8m) TID Tug Build
« Reply #128 on: February 12, 2018, 06:33:34 PM »

Very good, the point on the bottom of the transom should just break the water, nemesis
Logged

ballastanksian

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,561
  • Model Boat Mayhem inspires me!
  • Location: Crewkerne
Re: 71" (1.8m) TID Tug Build
« Reply #129 on: February 12, 2018, 09:26:47 PM »

Looking good Daz  :-)) The rudder looks the part.
Logged
Pond weed is your enemy

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #130 on: February 12, 2018, 10:23:01 PM »

cheers guys :)


Quite a relief when I didn't see any water in the hull! lol


Remember this is my 1st ever build so I was a little shaky! But now I can continue on with build, going to finish the electric box, then I will fix the deck & then i've got some Easy 1 Filler which i will seal the deck with.


Heres quick pic from today's test (only pic I got!) apart from the vid


derekwarner

  • Full Mayhemer
  • *****
  • Online Online
  • Posts: 7,927
  • Location: Wollongong Australia
Re: 71" (1.8m) TID Tug Build
« Reply #131 on: February 12, 2018, 11:48:05 PM »

It  is certainly interesting that after all of the trials & tribulations  %) for 24volt control systems, that a 12 volt supply now appears adequate

During the dry test, the motor presented an interesting resonance from startup.....equating to the sound of a constant speed fluid coupling drive approaching final speed

The dry test disappointingly did not display any clear motor speed control especially at lower shaft speed

So whilst higher shaft speed may be required for towing/manoeuvring work, a little more ballast aft may also be required to minimise initial cavitation

Derek
Logged
Derek Warner

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

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #132 on: February 13, 2018, 12:15:05 AM »

It  is certainly interesting that after all of the trials & tribulations  %) for 24volt control systems, that a 12 volt supply now appears adequate

During the dry test, the motor presented an interesting resonance from startup.....equating to the sound of a constant speed fluid coupling drive approaching final speed

The dry test disappointingly did not display any clear motor speed control especially at lower shaft speed

So whilst higher shaft speed may be required for towing/manoeuvring work, a little more ballast aft may also be required to minimise initial cavitation

Derek


Hi Derek :)


To be honest on the dry test in the video I didn't really do low throttle much as when low RPM it was quite noisy & it was late night & I live in a flat so my neighbours wouldn't have been too happy!


But on this water test at low rpm she plodded along nicely & was very quiet/smooth, in this vid it was mostly 1/2 to full throttle (again very quiet & smooth) as i wanted to test the power on 12-volt would be enough (which it definately is) ..yup she is going to need around a further 10kg in terms of ballast which I expected :)

nemesis

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 471
  • Location: North Shields. Northumberland
Re: 71" (1.8m) TID Tug Build
« Reply #133 on: February 13, 2018, 02:32:59 PM »

It is surprising just how much ballast these tugs take to get down on the waterline, also they were not that fast in real life, about 7/9 knots, enough for harbour work, so your test went well.nemesis
Logged

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #134 on: February 13, 2018, 08:51:28 PM »

hiya,


yup needs a fair amount of ballast! I had a rough idea from the start of this project that i would need around 50kg ballast, seems i wasn't far off!

captain bligh

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 177
  • Boats oh'd av um
  • Location: west cornwall
Re: 71" (1.8m) TID Tug Build
« Reply #135 on: February 14, 2018, 12:01:13 AM »

Looking good and plenty of running time with all the batteries  :-))
Logged
It's not a bad man who makes a mistake its a good man who can get over it.

tizdaz

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 428
  • Model Boat Mayhem is Great!
  • Location: Chester
Re: 71" (1.8m) TID Tug Build
« Reply #136 on: February 22, 2019, 12:58:13 AM »

Couple of updates!
Ive been buzy with other stuff but now im back onto the build so heres a couple of things ive done:
Decided to make my own Mist Unit, For those that don't know baout these kind of devices, they are NOT the oil type smoke generator's, these ones run purely of cold water, nothing more!
I will be running it using timgarrod's board that allows more or less flume of mist depending on throttle, it also has a remote on/off switch that can be toggled via the transmitter, ive gave it a test & it works great, highly recommended, just fire timgarrod a PM if you want to know about these boards, on to some pics:

I decided to use 3mm clear perspex for the unit, to join the pieces I used a liquid called Model X Pro that is specifically designed for bonding plastic/perspex together.




The actual Mist device runs from 24v supply, so to hook it up im using a 24v step up as my battery is 12v. The fan im using runs from 12v.


For the outlet I used some plastic plumbing pipe, i fixed a small connector thats usually used for joining 2 pieces of pipe together, this was ideal as I can insert/remove the pipe for ease of transport
Pages: 1 2 3 4 5 [6]   Go Up