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[Ship Worm]

Thought you might like the way I draw up the circuits for my models. Its made using 'Smart Draw' software.

[Martin (Admin)]

 
               

[ex docky]

Hi,
What motors and what batteries do you hope to use?
I have a Kingston moulding fairmile D
With 4 Eco 600's driven by 9.6 volt  Nimh's and 35 mm props 3 blade brass.
The action speed controller only copes with 2 of these motors as the current draw is high.
Ex docky

[Ship Worm]

Started out with 6V batteries but just changed it to 12V as I didn't feel it went fast enough! But I take your point. Dave Milburn put me on to a design he did for a Fairmile D for a guy called Mike Harris a year or two ago before he retired. Boat uses same props with geared motors. The hull for mine is based round the Deans kit.

[george]

Hello

 I have to say that I find this post VERY INTERESTING AND CONFUSING. I don`t think I have ever seen a 4 engine MTB. To me that means 4 engine direct drive to 4 propellers?

 I have seen 3 engine to 3 propellers lots of times. I have to say I am confused. Can anyone clear this up?

 Also to the circuit design person, can you create a circuit that deals with 3 engines with 3 propellers; WWII U.S PT Boat, British Vosper, German Schnellboat?

 Thanks
 George

[kinmel]

This is the system I used on my 3 motor Perkasa

[inertia]

Also to the circuit design person, can you create a circuit that deals with 3 engines with 3 propellers; WWII U.S PT Boat, British Vosper, German Schnellboat?

Already done - have a look here http://www.action-electronics.co.uk/wd.html

Circuit Design Man (Member of The League of Pointless Superheros)

[raflaunches]

Hello

 I have to say that I find this post VERY INTERESTING AND CONFUSING. I don`t think I have ever seen a 4 engine MTB.

 Thanks
 George

Fairmile D MTB's had four propeller shafts I believe.

[John W E]

Hi, if you really want to split hairs and be pedantic some of the British MTBs had 5 engines - two American V8s used for cruising and silent running, along with the 3 main engines, used for when you got up and WENT after your target 

Going to have to do a quick amendment here - had to get me little Bible out  - to do some checking - and, it was the Thorneycroft boats which had 4 R.Y.12 Thorneycroft engines 650 h.p each, on 2 shafts Auxillary engines were two Ford V8s.   The other V8s, on the other MTBs tended to be for electrical supply and not for silent running.   

There are a series of boats which were fitted with 3 Isotta-Fraschini, 1,200 hp engines each centre engine geared, wings direct drive.  Certain boats were fitted with Ford V8 cruising engines on the wing shafts.

    John

John - note to self don't start typing first thing on a morning - til coffee fix arrives

[inertia]

Note to John
Any time before 8.00am is just propaganda put out by the health fascists, and any time after 12.00 midnight is pure fiction.
KD Perkasa had five engines; three Proteus gas turbines and two General Motors diesels on the wing shafts, for cruising.
DM

[george]

 Hello

 Thanks for everyone`s input to my post. I have been to the action site and I have been reviewing my options / choices.
George

[Ship Worm]

For those really interested in 'Dog' boats, apart from the Anatomy of a Ship series of books on the Fairmile 'D' MTB, another one which is worth a read is 'Dog Boats at War' by L.C. Reynolds. Puts the flesh on the bones of what these guys had to endure.
Here's a close up of my effort.

[RAAArtyGunner]

For those really interested in 'Dog' boats, apart from the Anatomy of a Ship series of books on the Fairmile 'D' MTB, another one which is worth a read is 'Dog Boats at War' by L.C. Reynolds. Puts the flesh on the bones of what these guys had to endure.
Here's a close up of my effort.

Yes,  my cousin put me onto it.

[george]

 Hello kinmel

 First, thank You for your posting the 3 motor control. I see the picture BUT I can`t see clear enough there is one servo, an esc, three motors and two switches.

 Can you post a Larger picture of the setup? Also I don`t see any fuses to protect the esc. Are there any?

 Thanks Again
 George