* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



Join the AMS - Registered Forum users can become members of the AMS and it's free ...... To join register on the forum first then follow the forum link to our membership form which is on our website


For further details of any events shown here also see the "Shows and Events" section on the forum

Thanks for notification of events and keep 'em coming!

.

,
,
.

. ,

Norwich MBC Submariners joint Model Boat weekend - 27/28th July

Grantham MBC, SUN, AUG 11 AT 10 AM
.
.Model Boat Convention (Exhibition), 24,25 August

.

. Bournville Dive-In (2) MBC, 15th September

,,,,

Barrow in Furness MBC regatta and submarine event, Sunday 22nd Sept 2019,10am

Who is online?

In total there are 2 users online :: 0 Registered, 0 Hidden and 2 Guests :: 2 Bots

None


Most users ever online was 37 on Sun Mar 13, 2011 11:27 am

Latest topics

Statistics

Our users have posted a total of 10858 messages in 1778 subjects

We have 810 registered users

The newest registered user is Davidh

    Rudders & motors

    avatar
    nikola_9
    Guest

    Posts : 2
    Join date : 2011-05-06

    Rudders & motors Empty Rudders & motors

    Post  nikola_9 on Fri May 06, 2011 7:17 pm

    Hi everybody,

    I'm Nikola and I'm new to this website. I'm building a small water vehicle, just for hobby, and actually I don't have a big culture on the topic. I was looking for ideas about rudders.
    My submarine is a sort of underwater catamaran, and I want you guys to know if it’s possible to control the pitch motion (I mean the rotation around the transversal axis of the vehicle) and the roll one (I mean the rotation around the longitudinal axis of the vehicle) just with two rudders, one behind every hull, rotating around an axis parallel to the horizontal plane and normal to the hulls axes.
    Then, how can I actuate a rudder? Are there a motor and a reducer to make it rotate, or the rotation is given in another way (linear actuator and transmission)?
    Then, if someone is so kind to answer me, I just want you to know which website can I look at to find DC motors, with small dimensions, maybe used in underwater modeling (max 300 mm length), able to reach a power of about 2 kW.

    Thanks a lot,

    Nikola
    david f
    david f
    AMS Treasurer

    Posts : 2033
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    Rudders & motors Empty Re: Rudders & motors

    Post  david f on Sat May 07, 2011 9:45 am

    Yes to the effect of rudders.That is a good basis.
    For turning them, you need servos. Available in many sizes and torques. Servos will be controlled from a R/C receiver - assuming that is what you are using.
    Have a look at various suppliers of R/C equipment for motors and servos. By the way 2kW sounds like much too big a motor.
    avatar
    nikola_9
    Guest

    Posts : 2
    Join date : 2011-05-06

    Rudders & motors Empty Re: Rudders & motors

    Post  nikola_9 on Sat May 07, 2011 11:07 am

    Thank you David.
    So, no other fixed appendices (rudders) close to the bow?
    Then, apart for the power, which probably is too big, are DC motors used in this kind of models the same used in industrial application?
    david f
    david f
    AMS Treasurer

    Posts : 2033
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    Rudders & motors Empty Re: Rudders & motors

    Post  david f on Wed May 11, 2011 5:59 pm

    Yes you should be able to control everything from the stern.

    You probably want large control surfaces and slow revving, large props.

    Yes, standard DC motors probably geared down.

    Brushless perhaps, if you get the prop revs down.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1108
    Join date : 2010-11-06
    Age : 65
    Location : Braintree, Essex

    Rudders & motors Empty Re: Rudders & motors

    Post  nigele(ADMIN)2 on Wed May 11, 2011 6:10 pm

    Sounds like a prime candidate for a uni directional kort nozzle,perhaps between the sponsons,???
    david f
    david f
    AMS Treasurer

    Posts : 2033
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    Rudders & motors Empty Re: Rudders & motors

    Post  david f on Thu May 12, 2011 5:59 pm

    It does doesn't it.

    (Nice to hear you on here again, Nigel)

    (BTW chaps - I'm not able to respond to emails at the moment - password problems!)

      Current date/time is Tue Jul 16, 2019 3:34 am