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File: D:/hMailServer/Data/hyperflight.co.uk/robin/1F/{1FC64E29-5F89-4BE1-B261-85C00ADDBF53}.eml
Date: Mon, 11 May 2026 12:58:02 +0000 (UTC)
From: Anne Dunlop <freyaofclyde@yahoo.co.uk>
To: "sales@hyperflight.co.uk" <sales@hyperflight.co.uk>
Message-ID: <460614988.974613.1778504282936@mail.yahoo.com>
In-Reply-To: <CAEDyXA7A-hsa0uy5jh5wJiPJEqa6QcV1rs2D1i4cN2v0pFabvw@mail.gmail.com>
References: <F0A1DEBC9CB04F5DB8033F7F388AF7FA@itpartnership.com> <CAEDyXA7A-hsa0uy5jh5wJiPJEqa6QcV1rs2D1i4cN2v0pFabvw@mail.gmail.com>
Subject: Re: HyperFlight Enquiry - 22247
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 Hi NeilThank you for your quick response.=C2=A0 The phone number you gave =
is unfortunately not recognised!=C2=A0=C2=A0
I have read all the attached information you supplied and my system complie=
s with all of it.=C2=A0 The only one unknown is how do I calibrate the moto=
r system?
Alan

    On Monday, 11 May 2026 at 13:08:31 BST, sales@hyperflight.co.uk <sales@=
hyperflight.co.uk> wrote: =20
=20
 Hi Alan, you said
You said you have a twin motor installation and then you said =E2=80=9Can A=
XI2212/20B2=E2=80=9D. So I=E2=80=99m not quite sure what you=E2=80=99ve hav=
e. Please call me on (07821) 35131 as I prefer answering queries by phone.=
=C2=A0
For your info, I asked ChatGPT this:
Can you connect 2 same specification Hobby grade brushless motors parallel =
to a brushless speed controller?
And received this reply:
Usually no =E2=80=94 do not connect two hobby brushless motors in parallel =
to one ordinary brushless ESC.

A hobby brushless ESC is not just supplying =E2=80=9Cpower=E2=80=9D; it is =
actively commutating the three motor phases by reading the motor=E2=80=99s =
back-EMF. With two motors connected to the same three ESC outputs, the ESC =
sees a mixed signal from both motors. Even if the motors are identical, the=
y will not start in exactly the same rotor position or under exactly the sa=
me load, so one motor can desynchronise, stutter, overheat, or pull very hi=
gh current.

For normal RC use, the correct setup is:

One brushless ESC per brushless motor.

You can still control both motors from the same receiver throttle channel u=
sing a Y-lead on the signal side:
Battery
  =E2=94=9C=E2=94=80=E2=94=80 ESC 1 =E2=94=80=E2=94=80=E2=94=80 Motor 1
  =E2=94=94=E2=94=80=E2=94=80 ESC 2 =E2=94=80=E2=94=80=E2=94=80 Motor 2

Receiver throttle channel
  =E2=94=94=E2=94=80=E2=94=80 Y-lead =E2=94=80=E2=94=80=E2=94=80 ESC 1 sign=
al
             =E2=94=94=E2=94=80=E2=94=80 ESC 2 signal
Important points:
  =20
   - Use separate ESCs, each rated for its own motor/prop current.
   - The battery must handle the combined current of both systems.
   - If both ESCs have BECs, usually disconnect the red wire from one ESC=
=E2=80=99s receiver plug, so only one BEC powers the receiver.
   - Calibrate both ESCs to the same throttle range.
   - Use the same ESC settings: brake, timing, startup power, PWM frequency=
, etc.
   - Match props and motor rotation as needed.

The only rare exception is if two brushless motors are mechanically locked =
together on the same shaft and effectively behave as one motor, but even th=
en it is not generally recommended with ordinary sensorless hobby ESCs.

So for a twin-motor RC aircraft, boat, car, or project: use two ESCs, not o=
ne ESC with two motors in parallel.

Kind regards, Neil.=20

This message has been dictated to my phone. Please ignore any errors.
On Mon, 11 May 2026 at 12:52, <freyaofclyde@yahoo.co.uk> wrote:

Name: Alan=20

Country: United Kingdom

Telephone: 07754387765

Email: freyaofclyde@yahoo.co.uk

Enquiry: I wonder if you can help me? I have a twin motor installation usin=
g an AXI2212/20B2 coupled to a Hyperflite 30ABLHELI32ESC. How do I match th=
e speed of the two motors?


 =20
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<html><head></head><body><div class=3D"ydp6062fd5yahoo-style-wrap" style=3D=
"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">=
<div></div>
        <div dir=3D"ltr" data-setdir=3D"false">Hi Neil</div><div dir=3D"ltr=
" data-setdir=3D"false">Thank you for your quick response.&nbsp; The phone =
number you gave is unfortunately not recognised!&nbsp;&nbsp;</div><div dir=
=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"fa=
lse">I have read all the attached information you supplied and my system co=
mplies with all of it.&nbsp; The only one unknown is how do I calibrate the=
 motor system?</div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div d=
ir=3D"ltr" data-setdir=3D"false">Alan</div><div dir=3D"ltr" data-setdir=3D"=
false"><br></div><div><br></div>
       =20
        </div><div id=3D"ydpceec70e8yahoo_quoted_9210845108" class=3D"ydpce=
ec70e8yahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                        On Monday, 11 May 2026 at 13:08:31 BST, sales@hyper=
flight.co.uk &lt;sales@hyperflight.co.uk&gt; wrote:
                    </div>
                    <div><br></div>
                    <div><br></div>
               =20
               =20
                <div><div id=3D"ydpceec70e8yiv0809023134"><div>Hi Alan, you=
 said</div><div><br></div><div>You said you have a twin motor installation =
and then you said =E2=80=9C<span style=3D"font-size:inherit;">an AXI2212/20=
B2=E2=80=9D. So I=E2=80=99m not quite sure what you=E2=80=99ve have. Please=
 call me on (07821) 35131 as I prefer answering queries by phone.&nbsp;</sp=
an></div><div><span style=3D"font-size:inherit;"><br></span></div><div>For =
your info, I asked ChatGPT this:</div><div><span style=3D"font-size:inherit=
;"><div style=3D"font-size:inherit;"><div style=3D"font-size:inherit;">

<p>Can you connect 2 same specification Hobby grade brushless motors parall=
el to a brushless speed controller?</p></div></div></span></div><div>And re=
ceived this reply:</div><div><span style=3D"font-size:inherit;"><br></span>=
</div><div><span style=3D"font-size:inherit;">Usually </span><b style=3D"fo=
nt-size:inherit;border-color:rgb(0,0,0);">no</b><span style=3D"font-size:in=
herit;"> =E2=80=94 do </span><b style=3D"font-size:inherit;border-color:rgb=
(0,0,0);">not</b><span style=3D"font-size:inherit;"> connect two hobby brus=
hless motors in parallel to one ordinary brushless ESC.</span><br></div><di=
v><div style=3D"font-size:inherit;"><div style=3D"font-size:inherit;">
<p>A hobby brushless ESC is not just supplying =E2=80=9Cpower=E2=80=9D; it =
is actively commutating the three motor phases by reading the motor=E2=80=
=99s back-EMF. With two motors connected to the same three ESC outputs, the=
 ESC sees a mixed signal from both motors. Even if the motors are identical=
, they will not start in exactly the same rotor position or under exactly t=
he same load, so one motor can desynchronise, stutter, overheat, or pull ve=
ry high current.</p>
<p>For normal RC use, the correct setup is:</p>
<p><b>One brushless ESC per brushless motor.</b></p>
<p>You can still control both motors from the same receiver throttle channe=
l using a <b>Y-lead</b> on the signal side:</p>
<pre style=3D"font-family:monospace;"><code style=3D"font-family:monospace;=
">Battery
  =E2=94=9C=E2=94=80=E2=94=80 ESC 1 =E2=94=80=E2=94=80=E2=94=80 Motor 1
  =E2=94=94=E2=94=80=E2=94=80 ESC 2 =E2=94=80=E2=94=80=E2=94=80 Motor 2

Receiver throttle channel
  =E2=94=94=E2=94=80=E2=94=80 Y-lead =E2=94=80=E2=94=80=E2=94=80 ESC 1 sign=
al
             =E2=94=94=E2=94=80=E2=94=80 ESC 2 signal</code></pre>
<p>Important points:</p>
<ul><li>Use <b>separate ESCs</b>, each rated for its own motor/prop current=
.</li><li>The battery must handle the <b>combined current</b> of both syste=
ms.</li><li>If both ESCs have BECs, usually disconnect the red wire from on=
e ESC=E2=80=99s receiver plug, so only one BEC powers the receiver.</li><li=
>Calibrate both ESCs to the same throttle range.</li><li>Use the same ESC s=
ettings: brake, timing, startup power, PWM frequency, etc.</li><li>Match pr=
ops and motor rotation as needed.</li></ul>
<p>The only rare exception is if two brushless motors are <b>mechanically l=
ocked together on the same shaft</b> and effectively behave as one motor, b=
ut even then it is not generally recommended with ordinary sensorless hobby=
 ESCs.</p>
<p>So for a twin-motor RC aircraft, boat, car, or project: <b>use two ESCs,=
 not one ESC with two motors in parallel.</b></p></div></div></div><div><br=
 clear=3D"all"><div><div dir=3D"ltr" class=3D"ydpceec70e8yiv0809023134gmail=
_signature">Kind regards, Neil. <br><br>This message has been dictated to m=
y phone. Please ignore any errors.</div></div></div><div><br><div class=3D"=
ydpceec70e8yiv0809023134gmail_quote ydpceec70e8yiv0809023134gmail_quote_con=
tainer"><div dir=3D"ltr" class=3D"ydpceec70e8yiv0809023134gmail_attr">On Mo=
n, 11 May 2026 at 12:52, &lt;<a href=3D"mailto:freyaofclyde@yahoo.co.uk" re=
l=3D"nofollow" target=3D"_blank">freyaofclyde@yahoo.co.uk</a>&gt; wrote:<br=
></div><blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex;" class=3D"ydpceec70e8yiv0809023134gmail_=
quote">Name: Alan <br><br>Country: United Kingdom<br><br>Telephone: 0775438=
7765<br><br>Email: <a href=3D"mailto:freyaofclyde@yahoo.co.uk" rel=3D"nofol=
low" target=3D"_blank">freyaofclyde@yahoo.co.uk</a><br><br>Enquiry: I wonde=
r if you can help me?  I have a twin motor installation using an AXI2212/20=
B2 coupled to a Hyperflite 30ABLHELI32ESC.   How do I match the speed of th=
e two motors?<br><br></blockquote></div></div>
</div></div>
            </div>
        </div></body></html>
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