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    Power and Control
    by Maverick ๐Ÿ‡ฌ๐Ÿ‡ง ( Leading Seaman)
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    7 Posts 6 Replies 0 Photos 15 Likes
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    zooma
    Warrant Officer
    ๐Ÿ“ Power and Control
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 5 minutes ago
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    I am running a Turnigy 3648-1450 in a LesRo Rapier with a Turnigy 120A ESC to control it.

    There is enough power on only two cells (2C) to make the boat "silly fast" on our club lake and both the motor and ESC can run up to 6C !

    I have tried 3C and that was 'exciting" so I would have no hesitation in recommending the same motor/ESC for use in your 48" Huntsman.

    A Sea Queen is in the que of classic model boats that are waiting in my workshop for restoration and I am thinking about fitting the above choice to give me plenty of power to shove it along at a brisk pace.

    Hope this helps - Bob.
    2
    Never too old to learn
    Maverick
    Leading Seaman
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 1 day ago
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    Awesome thank you
    1
    ChrisF
    Chief Petty Officer 1st Class
    ๐Ÿ“ Power and Control
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 6 hours ago
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    It is a quite a big heavy boat and you need a motor with good torque to get it moving but also able to provide a good turn of speed.

    So I'd use at least a 50mm diameter outrunner brushless motor for the torque. As diameter increases the available kv (to determine the battery voltage required) tends to decrease and unlike say 28 and 35 diameter motors where there is a big choice, there are very few motors available with a high enough kv to provide rpm of 10k. to 12k. to give a good planing performance.

    Motors that are available and good quality are:

    Overlander Batteries 5045/10 720kv Tornado Thumper V3. Run on 4S/14.8 volts.

    Leopard Hobby LC5055-6T 650kv. Run on 5/6S 18.5/22.2 volts. Available from Component Shop.

    Turnigy Propdrive V2 5050 580kv. Run on 5/6S 18.5/22.2 volts.
    Available from e.g. Hobbyking.

    The motor specifications will give the ESC rating required but I tend to go higher and use something like 120amp.

    Prop needs to be around 45/50mm diameter but check on clearance.

    Chris
    3
    Building 6 Faireys at a scale of 1:12 and another in the pipeline!
    dave976
    Midshipman
    ๐Ÿ“ Power and Control
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 11 hours ago
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    hi Maverick
    I agree with Martin but you may still need advice for your particular model.

    In which case, I believe we need more info to answer your question.

    The drive train for any model boat consists of a battery, ESC, motor, coupling, propshaft and propeller.
    Each part contributes to the overall performance and need to be considered as an entity for best performance. It is also important to ensure each part is operated within its individual specification. This can be achieved by using a a simple and relatively cheap Wattmeter to measure the current and watts being drawn.

    There are different types of batteries available and each requires correct treatment re charging and discharging. LiPos will provide the greatest power to weight performance but involve initial costs if you are new to their use.

    So if you could advise a bit more detail I am sure one of our members will be able to help you choose a system that will suitable for you purpose.

    Cheers
    Dave
    3
    Martin555
    Fleet Admiral
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    Online: 3 days ago
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    Hi Maverick.

    Have you had a look at other build logs on here to see what others have used ?

    PM sent.

    Martin555.
    2
    If it looks right it probably is.
    Maverick
    Leading Seaman
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    Country: ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
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    Any clue guys please?
    1
    Maverick
    Leading Seaman
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    What size electric motor do I need for a 48" Huntsman, what's best Brushless make ( without breaking the bank), also what size ESC ( 100amp maybe) please
    3



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