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[wesmat]

Hello, This is my first post regarding my first powered model build.  I am building a tug to be used for retrieval of stranded vessels of my sailboat club.

The boat is selected since the club already owns 1/15 plans for the MACDUFF "FORTH" 9. Length is 595mm, beam is 260mm. I am going to use steerable kort nozzles and am trying to decide between Prop Shop and MMM.  Prop Shop looks like a stronger design with fewer parts (less to fail).  Am I missing something?

I am a very experienced builder, so the construction process does not worry me.  I am most interested in how well it performs and reliability.  A scale model is not the priority.  A functional tug is the goal. 

Also, is a steerable nozzle indeed better than a nozzle with rudder?  Research seems to indicate that the rudder will not work as well at slow speeds.

Thanks

[Shipmate60]

With twin shafts the only advantages to a Kort is the more precise steering astern and the shrouding of the propeller.
There are several ways to power he.
Open props and Tank Steering Channel 2 and 3 for each shaft.
Mixer steering which will only use a single channel.
The choice is really for which one the driver feels more comfortable with.

Bob

[wesmat]

This willl only have a single shaft/prop.

[Shipmate60]

Then the Kort will make it more maneuverable especially astern.
Sorry your initial post did say "steerable Kort Nozzles" I took this to mean 2.

Bob

[wesmat]

Steerable Korts are nozzles that rotate around the propeller.  The two primary manufacturers have very different designs, one plastic the other metal.  I'm hoping someone has experience with each and can provide feedback.

[Pirate]

Personaly ... MMM every time, mostly because Brian is so helpful and their products are excellent.
Regards
Pirate

[TugCowboy]

Yep I'd agree, go with MMM. Brilliant products and work fantastically well. Most the serious tuggers I know use them in their towing tugs.

Alex

[wesley]

I had quality issues with a pair of korts I bought from MMM they were not round and had some shrinkage. I sent them back explaining the problem and MMM returned them to me saying there was nothing wrong with them.
When I called him and asked why he had sent the original, faulty korts back to me he got very rude and abusive on the phone I cannot say what he said on this forum, but needless to say I do not buy from them any more and I am very disappointed with their "customer? service".

Andrew