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Old Mar 02, 2014, 06:59 AM
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ESC for Turnigy D2826-10 1400 kv motor

Hi,

HobbyKing product's page recommends a 40A for the Turnigy D2826-10 1400 kv motor while the max current is "only" 21A.
Even when checking with "Lipo-ESc-Motor-Prop" on-line calculator, I never reach 40A.

So here is my question : is a 40A ESC mandatory ? Wouldn't be a 30A ESC enough ? Taking in account that a 30A ESC is also far cheaper (ex. Plush 30A vs 40A) ?

Thanks in advance for your recommendations.

Ivan
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Old Mar 02, 2014, 08:14 AM
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A 30A ESC is more than adequate for a 21A load.

If you haven't already got one, put the money saved towards a wattmeter, just to make sure you don't exceed the safe amps.
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Old Mar 02, 2014, 11:47 AM
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At 50g that motor on 3s shouldn't be asked to draw more than about 14A/150W (3W/g)... even pushing it to 200W (= 4W/g) you'd still be drawing <20A.... a 30A ESC is plenty.
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Old Mar 03, 2014, 08:27 AM
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Thank you very much for your precisions.

I plan to usee this motor/ESC combination in a Bixler 2 (with 4 or 6 servos) from HK.
Is there a "best" choice regarding the ESC ?
I think I need at least a 3A SBEC/UBEC ESC in order to power 4 or 6 servos.
Are Turnigy Plush ESC's a real advantage over other HobbyKing ESC's ?

Thanks in advance,
Ivan
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Old Mar 03, 2014, 04:42 PM
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Turnigy Plush do have a far better reputation than some other el cheapo HK offerings.

But to get even a 3A switching BEC you have to go up to an 80A Plush ESC (all the smaller ones [20A/40A/60A have linear 2A or 3A BECs)

You may want a stand alone external BEC (such as a Castle 10A) to ensure you have plenty of power for half a dozen servos.http://www.castlecreations.com/products/ccbec.html
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Old Mar 03, 2014, 06:49 PM
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Quote:
Originally Posted by kittyhawk1974 View Post
Thank you very much for your precisions.

I plan to usee this motor/ESC combination in a Bixler 2 (with 4 or 6 servos) from HK.
Is there a "best" choice regarding the ESC ?
I think I need at least a 3A SBEC/UBEC ESC in order to power 4 or 6 servos.
Are Turnigy Plush ESC's a real advantage over other HobbyKing ESC's ?

Thanks in advance,
Ivan
Go with a 40 amp if you are concerned with needing a 3 amp switching bec.
The item linked below is a Hobby Wing Pentium/Turnigy Plush rebrand. I have been using them for years and they are rock solid.

http://www.hobbypartz.com/60p-dye-1004-40a-esc.html
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Old Mar 03, 2014, 06:59 PM
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But, Rich, does that have a switch mode BEC?
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Old Mar 03, 2014, 08:00 PM
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Originally Posted by Dr Kiwi View Post
But, Rich, does that have a switch mode BEC?
Check the table at the bottom of the 70 amp page:

http://www.hobbypartz.com/60p-dye-1018-70a-esc.html
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Old Mar 03, 2014, 10:49 PM
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Excellent! So they are actually superior to, and therefore not an exact rebrand of the Plush line which are linear all the way to 60A.
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Old Mar 03, 2014, 11:47 PM
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Originally Posted by Dr Kiwi View Post
Excellent! So they are actually superior to, and therefore not an exact rebrand of the Plush line which are linear all the way to 60A.

I believe the 40 amp plush is mislabeled as linear. The ESC is rated from 2 to 6 cell lipo. And the BEC is rated at a full 3 amp continuous output. I have never seen either of those thing with a linear bec.
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Old Mar 04, 2014, 06:59 AM
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Thank you for you replies.

The reason I make reference to Hobbyking ESC is their affordable shipping charge (around 6 USD to Europe).

Indeed, shipping from Hobbypartz is simply too expensive (ex. ESC + programing card is 20 USD + 45 USD for shipping to Belgium !)

I think 3A (or 4A) should be OK for 6 micro servos (Bixler 2) : Rudder/Elevator - 2 ailerons + 2 flaps. Am I wrong ?

Here are the models I have checked (all are SBEC or UBEC) :

Hobby King 30A ESC 3A UBEC for 9.99 USD :
http://www.hobbyking.com/hobbyking/s...C_3A_UBEC.html

HobbyKing 40A ESC 4A UBEC for 16.69 USD :
http://www.hobbyking.com/hobbyking/s...C_4A_UBEC.html

HobbyKing 30A BlueSeries Brushless Speed Controller for 11.91 USD :
http://www.hobbyking.com/hobbyking/s...ontroller.html

TURNIGY Plush 40amp Speed Controller for 21.99 USD :
http://www.hobbyking.com/hobbyking/s...ontroller.html

Your advices are of course welcome

Ivan
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Old Mar 04, 2014, 08:11 AM
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Quote:
Originally Posted by kittyhawk1974 View Post
Thank you for you replies.

The reason I make reference to Hobbyking ESC is their affordable shipping charge (around 6 USD to Europe).

Indeed, shipping from Hobbypartz is simply too expensive (ex. ESC + programing card is 20 USD + 45 USD for shipping to Belgium !)

I think 3A (or 4A) should be OK for 6 micro servos (Bixler 2) : Rudder/Elevator - 2 ailerons + 2 flaps. Am I wrong ?

Here are the models I have checked (all are SBEC or UBEC) :

Hobby King 30A ESC 3A UBEC for 9.99 USD :
http://www.hobbyking.com/hobbyking/s...C_3A_UBEC.html

HobbyKing 40A ESC 4A UBEC for 16.69 USD :
http://www.hobbyking.com/hobbyking/s...C_4A_UBEC.html

HobbyKing 30A BlueSeries Brushless Speed Controller for 11.91 USD :
http://www.hobbyking.com/hobbyking/s...ontroller.html

TURNIGY Plush 40amp Speed Controller for 21.99 USD :
http://www.hobbyking.com/hobbyking/s...ontroller.html

Your advices are of course welcome

Ivan

I would get the Plush from HK or here is another alternative if you use eBay:

http://www.ebay.com/itm/Hobbywing-Pe...item4ad160367a

They are one in the same. If you decide to add more planes you can standardize on this type of ESC and buy the inexpensive program card. This ESC is everywhere and well documented. i have been using them for 3 plus years and have been well pleased.
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Old Mar 04, 2014, 09:55 AM
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Here are the models I have checked (all are SBEC or UBEC) :

I don't understand the SBEC/UBEC terminology for these ESCs.. they have built-in BECs, most of them (?all) linear.

My understanding of "UBEC" or "SBEC" is a stand-alone BEC used in conjunction with an ESC (necessary with an OPTO, or with a built-in BEC's power lead disconnected) .. like the Castle 10A BEC I linked to.
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Old Mar 04, 2014, 10:11 AM
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Quote:
Originally Posted by Dr Kiwi View Post
Here are the models I have checked (all are SBEC or UBEC) :

I don't understand the SBEC/UBEC terminology for these ESCs.. they have built-in BECs, most of them (?all) linear.

My understanding of "UBEC" or "SBEC" is a stand-alone BEC used in conjunction with an ESC (necessary with an OPTO, or with a built-in BEC's power lead disconnected) .. like the Castle 10A BEC I linked to.
It seems to me that :

SBEC = Switched BEC
UBEC = Ultimate (Universal ?) BEC (commercial name for a Switched BEC type)

Specs sheet from HK site states that HobbyKing UBEC are switched ones.
For the Turnigy Plush : up to 30A = Linear BEC, 40A and over = Switched BEC

Ivan
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Old Mar 04, 2014, 10:14 AM
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Quote:
Originally Posted by Dr Kiwi View Post
Here are the models I have checked (all are SBEC or UBEC) :

I don't understand the SBEC/UBEC terminology for these ESCs.. they have built-in BECs, most of them (?all) linear.

My understanding of "UBEC" or "SBEC" is a stand-alone BEC used in conjunction with an ESC (necessary with an OPTO, or with a built-in BEC's power lead disconnected) .. like the Castle 10A BEC I linked to.
Look at the labels. 2 through 6 cell lipo is a guarantee they are switching bec's.
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