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    Hobbywing 90A ESC
    by drspock πŸ‡¬πŸ‡§ ( Petty Officer 2nd Class)
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    drspock
    Petty Officer 2nd Class
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 days ago
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    Hi Graham,
    Thanks for your fantastic reply!
    I will probably play with it on the bench initially,with a new insight.
    Doc.
    1
    Graham93
    Lieutenant Commander
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 26 minutes ago
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    Hi Doc,

    A latching relay has two coils, one to operate the relay (on) and one to release it (off). My latching relay has 5 connections. It is designed to be mounted onto a circuit board. Two large pins for the relay contacts (50A) and three small pins for the two coils. On the side of the relay was information which indicated that the common connection to the two coils should be the +ve connection. The diagram shows the circuit wiring. The on/off switch I used is a centre off toggle switch, sprung loaded each way from centre. Pushing one way applies power to one relay coil, switching the relay on. Pushing the toggle the other way applies power to the other coil, switching the relay off. These are usually described in catalogues as ' (on) - off - (on) ' switches.

    I didn't use a circuit board to mount the relay. I simply soldered wires to the pins, and insulated them with heatshrink.

    Graham93
    3
    drspock
    Petty Officer 2nd Class
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 days ago
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    Hi Graham,
    Referring to your reply on the latching relay,mine has arrived from China after nearly three months!
    My question is;what connectors did you use on the pins?
    Thanks in anticipation.
    Doc.
    1
    drspock
    Petty Officer 2nd Class
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 days ago
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    Graham,
    Fantastic reply,I have seen latching relays,but did not understand the significance.I do now,and will follow this steer.Many thanks,

    Doc
    1
    Graham93
    Lieutenant Commander
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 26 minutes ago
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    Hi drspock,

    "If I want to switch it with a sensibly sized switch,presumably I would need a relay,as 90A @12V is a pretty heavy load."

    I use a 50A latching relay together with a blade fuse in my Crash Tender to switch the ESC power. Using a latching relay means the relay doesn't continually draw power, only a short pulse to switch it on, and another to switch it off. The relay has two coils, one for on and one for off. These are activated using a small centre off spring loaded toggle switch mounted under the sliding hatch on the forward cabin roof. Push one way for on, and the other for off. The second switch is for the separate receiver/auxillaries battery.

    Graham93
    https://www.ebay.co.uk/itm/1PCS-ORIGINAL-HFE10-2-12-HT-L2-Miniture-High-Power-Latching-relay-50A-277VAC/202184119005?hash=item2f131cd2dd:g:lKQAAOSw8i9aWCRp
    πŸ”—
    3
    Ianh
    Warrant Officer
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 1 day ago
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    Sorry 2 MFA 540's
    Only old in years not mind or soul.
    Ianh
    Warrant Officer
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 1 day ago
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    Got 2 MFA 54's for mine😊😊😊
    Only old in years not mind or soul.
    drspock
    Petty Officer 2nd Class
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 3 days ago
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    Many thanks Doug. I am using a 60A fuse but like the idea of a quick flick startup/off.
    The boat is the model that Robbob has a build blog on the site,a 46" crash tender.It is heavy and needs a realistic scale speed.
    Motor is Overlander thumperT4260/06.
    Cheers,John
    2
    drspock
    Petty Officer 2nd Class
    πŸ“ Hobbywing 90A ESC
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    Country: πŸ‡¬πŸ‡§ United Kingdom
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    Thanks Ianh,I have a 60A fuse ready,but do like the idea of just flicking a small switch.
    1
    Ianh
    Warrant Officer
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    Country: πŸ‡ΏπŸ‡¦ South Africa
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    Same as RNinMunich
    I don't use a switch but have a removable blade fuse.
    As said I doubt you will use 90 Amps!(Check the maximum draw at the motor not stalled!) You want it to fail before stalling The cable would be horrendousπŸ‘πŸ‘
    2
    Only old in years not mind or soul.
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