Sunnysky R0703 micro motors 0703 (12000KV, 15000KV) - RC Groups
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Nov 03, 2017, 04:39 AM
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New Product

Sunnysky R0703 micro motors 0703 (12000KV, 15000KV)


Sunnysky is about to release the 0703 sized motors. The main diference with the other similarsized motors - ball bearings. Sunnysky R0703 motors have ball bearings with shaft lock clips. Probably the motor mount holes have different measurements because of the ball bearing.









Specifications:
Brand Name: Sunnysky
Modle: R0703
Item Name: 0703 12000KV / 15000KV 1-2S Motor
Stator Diameter: 7mm
Stator Thickness: 3mm
Motor KV: 12000KV / 15000KV ( Optional)
No. of Stator Arms: 8
No. of Stator Poles: 10
Motor Resistance: 200mΩ
Weight: 1.8g
Max. Lipo Cell : 2S
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Nov 03, 2017, 04:40 AM
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Reserverd
Nov 03, 2017, 11:54 AM
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This looks cool! Hopefully they aren't as vibratey as the racerstar ones
Nov 03, 2017, 05:43 PM
Registered User
Quote:
Originally Posted by elmtree
This looks cool! Hopefully they aren't as vibratey as the racerstar ones
I too hope that ball bearings and Sunnysky quality will eliminate this issue. My Dustx58 with Racerstar BR0703 vibrates like baby's rattle and refuses to fly
I have ordered samples. Will make some tests.
Nov 03, 2017, 08:27 PM
Brisbane, Australia
It's a 9N10P configuration, which is uncommon but might be better than the common 9N12P according to Ralph Okon. It needs lower erpm from the esc for the same motor rpm compared to 9N12P, which can only be good I think.

It looks like Sunnysky have managed to space the magnets a lot more carefully than the Racerstar 07XX so hopefully these will run with very little vibration. Prop balance could still be a problem though. I've started balancing 2.3" to 3" props (when needed) for 11XX motors lately and the quads fly so much better.

The motor mount holes are a new layout - M1.6 screws on a 6.5mm diameter. The Racerstars are on a 5.5mm diameter. Claimed weight is 3gm vs the Racerstar 0703 claimed weight of 1.9gm, but it has a 1.5mm shaft vs 1mm so hopefully a fair bit stronger. Still that's a lot more weight (4gm extra for the quad) if the claimed weights are correct. Considering the Racerstar 1102's and 1103's weigh around 3.5/3.6gm each, these Sunnysky motors do look a bit on the heavy side. Looking forward to your testing montis.
Nov 03, 2017, 08:36 PM
Registered User
Quote:
Originally Posted by Ian444
It's a 9N10P configuration, which is uncommon but might be better than the common 9N12P according to Ralph Okon. It needs lower erpm from the esc for the same motor rpm compared to 9N12P, which can only be good I think.

It looks like Sunnysky have managed to space the magnets a lot more carefully than the Racerstar 07XX so hopefully these will run with very little vibration. Prop balance could still be a problem though. I've started balancing 2.3" to 3" props (when needed) for 11XX motors lately and the quads fly so much better.

The motor mount holes are a new layout - M1.6 screws on a 6.5mm diameter. The Racerstars are on a 5.5mm diameter. Claimed weight is 3gm vs the Racerstar 0703 claimed weight of 1.9gm, but it has a 1.5mm shaft vs 1mm so hopefully a fair bit stronger. Still that's a lot more weight (4gm extra for the quad) if the claimed weights are correct. Considering the Racerstar 1102's and 1103's weigh around 3.5/3.6gm each, these Sunnysky motors do look a bit on the heavy side. Looking forward to your testing montis.
The first post says 1.8g per. I think the 3g on BG is a typo
Nov 04, 2017, 12:37 AM
Registered User
Quote:
Originally Posted by elmtree
The first post says 1.8g per. I think the 3g on BG is a typo
Ha almost everything on BG is a freakin typo!
Nov 04, 2017, 03:36 AM
Brisbane, Australia
Quote:
Originally Posted by elmtree
The first post says 1.8g per. I think the 3g on BG is a typo
Oops, missed that detail, 1.8gm sounds very good.
Nov 04, 2017, 03:50 AM
Registered User
Description on the Banggood even says it is 8N10P configuration, while I and lan444 count 9N10P. So I wouldn't trust any word of it

This new mounting holes layout 6.5mm is the real issue - anyone knows a ready to buy frame for these motors?
Nov 04, 2017, 10:06 AM
Registered User
Quote:
Originally Posted by montis
Description on the Banggood even says it is 8N10P configuration, while I and lan444 count 9N10P. So I wouldn't trust any word of it

This new mounting holes layout 6.5mm is the real issue - anyone knows a ready to buy frame for these motors?
Rakonheli 66mm should work with some modifications?
Nov 04, 2017, 11:38 AM
Registered User
It's just a millimeter diameter difference right? Can't you just file out a tiny bit of each hole?
Nov 04, 2017, 03:14 PM
Registered User
Quote:
Originally Posted by elmtree
It's just a millimeter diameter difference right? Can't you just file out a tiny bit of each hole?
Yes, you need to file only 0.5mm of the each 5.5mm mount hole to make 6.5mm. So probably doable.
Nov 05, 2017, 03:11 AM
Brisbane, Australia
Finding a 1.5mm diameter round file is the hard part...
Nov 05, 2017, 07:44 AM
Registered User
What about the c-clip and bearing? It looks like it might not fit the same way through the center hole on rakonheli 66mm...

Also with a 1.5mm shaft diameter what prop would these take in a whoop frame?
Nov 05, 2017, 10:11 AM
Registered User
Quote:
Originally Posted by Astounding
Rakonheli 66mm should work with some modifications?
They also have a sunnysky version with the 6.5mm mounting pattern


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