Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Other Technical Questions... => Topic started by: rats on December 02, 2006, 02:54:54 PM

Title: Bow Thrusters
Post by: rats on December 02, 2006, 02:54:54 PM
Can anyone recommend a good powerful bow thruster suitable for a 46 inch tug ?  I have never used one before but all the reviews I have read of models that have them fitted generally seem to express dissatisfaction with the output. If not any idea how to make one - the design must be easy enough just a matter of sealing the tube from boat !

   thanks in advance  rats
Title: Re: Bow Thrusters
Post by: Scottie on December 02, 2006, 03:21:12 PM
I've used the Graupner one in my 53" ro/ro ferry, it's a bit noisy but pushes her around well enough.
I've bought a Robbe one for the 7 1/2 foot container ship I'm building, Mark at AMW said it was more powerful than the Graupner but I can't confirm that yet.

Hope this helps,

Scottie
Title: Re: Bow Thrusters
Post by: rats on December 02, 2006, 03:32:14 PM
 Thanks for reply Scottie,  as I understand it Robbe do two bow thrusters one of which is a twin screw but they are using plastic props can you confirm that ?
  cheers rats
Title: Re: Bow Thrusters
Post by: Scottie on December 02, 2006, 03:38:00 PM
Hi Rats,

Sorry, I can't confirm. The one I have is a 'paddle' type, not propellor type.

Scottie.
Title: Re: Bow Thrusters
Post by: Tug-Kenny on December 02, 2006, 05:52:25 PM

I also have the Robbe 'Paddle' type, but have not tried it yet.

Just a note to remember that they have short tubes and need to be fitted closer to the bow. I did not want to do this, so I made longer tubes. It will be a while before I can try it out though.
Hope this helps


Cheers...Ken
Title: Re: Bow Thrusters
Post by: 17-21 on December 02, 2006, 06:21:44 PM
I fitted the robbe one in my Lifeboat it was no good, this maybe due to the lifeboats size so I got a new one from the Model dock yard part Number M75112 its not cheap but it works well, and has two props just like the real ones.

As far as i know Robbe are no longer making the prop type bow thruster.



17-21

Phil.
Title: Re: Bow Thrusters
Post by: portside II on December 04, 2006, 04:19:04 PM
 ;DHi there i have the robbie prop type thruster in brakengarth and at 42" ,half a ton (it feel's like that) it pushes her around great now that i have fitteda decent motor in .
the onlt prob is the noise ,but if you can put up with that fine.
I also have the new paddle type fitted in metcalf mouldings Greamsey but dont know what its like as it's not been wet yet.
hope this helps
Daz
Title: Re: Bow Thrusters
Post by: rats on December 04, 2006, 05:30:56 PM
  thanks for all replies the Marx Luder from Model Dockyard looks impressive - cheers 17-21
                  rats
Title: Re: Bow Thrusters
Post by: ministeve on December 04, 2006, 09:04:57 PM
hi rats if u useing tug for towing u might like to fit one of these ive made plenty for the lads in our club at ellsmearport if u need details on how to build one just ask they will dock a 14 foot ship with ease
Title: Re: Bow Thrusters
Post by: rats on December 04, 2006, 09:16:09 PM
 Thanks ministeve have sent you PM
         rats
Title: Re: Bow Thrusters
Post by: ministeve on December 05, 2006, 10:55:04 PM
hi rats i seem to be haveing probs seeing pm try just emailing me on " ministeve72@aol.com "
Title: Re: Bow Thrusters
Post by: rp6705 on December 06, 2006, 03:11:48 PM
Have you tried a couple of wiper/washer motors, i used two in my Norderney and they are very powerful and a lot cheaper than Robbe/Graupner.
Title: Re: Bow Thrusters
Post by: Subculture on December 07, 2006, 11:05:08 AM
You can use centrifugal pumps, they really shift water.

You will need two as they're not reversible, but they're only about 12 each, so still cheaper than the Graupner thrusters.

http://www.leisureshopdirect.com/caravan/water/reich_pumps.aspx