3500 RPM per volt motor ?
#1
Thread Starter
Join Date: Nov 2004
Location: Chester, UNITED KINGDOM
Posts: 261
Likes: 0
Received 0 Likes
on
0 Posts
3500 RPM per volt motor ?
I have noticed on a well known auction site an outrunner motor listed as being 8 - 20 amp and 3500 RPM per volt and suitable for use with a 3S LiPo
Does this really mean that this motor will spin over 38000 rpm with a 3S LiPo ?
#2
Senior Member
Join Date: Dec 2004
Location: Naersnes, NORWAY
Posts: 912
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3500 RPM per volt motor ?
Unloaded yes.
There are motors with even higher kV-numbers out there. Meant for either gearbokes or for Ducted Fans.
The AXI 1215/9 has kV 6370... for Alfa DF.
There are motors with even higher kV-numbers out there. Meant for either gearbokes or for Ducted Fans.
The AXI 1215/9 has kV 6370... for Alfa DF.
#3
Senior Member
Join Date: Feb 2006
Location: TownsvilleQLD, AUSTRALIA
Posts: 142
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3500 RPM per volt motor ?
That's interesting. Would that go well on an F27 Stryker?
Ghost123 - could you post the link to that motor?
Cheers,
Jim
Ghost123 - could you post the link to that motor?
Cheers,
Jim
#4
Thread Starter
Join Date: Nov 2004
Location: Chester, UNITED KINGDOM
Posts: 261
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3500 RPM per volt motor ?
ORIGINAL: superjim
That's interesting. Would that go well on an F27 Stryker?
Ghost123 - could you post the link to that motor?
Cheers,
Jim
That's interesting. Would that go well on an F27 Stryker?
Ghost123 - could you post the link to that motor?
Cheers,
Jim
In HK but I have dealt with this company a couple of times - all ok
I am trying to find out the pro's and cons of RPM per volt differences.
The motor I just bought for my electric converted 39" light wieght Herr Extra is 1100 RPM per volt at up to 20A with 30A ESC and a 2200mAh 12C 3S LiPo and for now I have fitted a smaller than recomended 8x6. Not yet flown but feels about right and pulls only 10A wfo.
Comments invited re rpm ratings and prop choice etc
#5
Senior Member
Join Date: Dec 2004
Location: Naersnes, NORWAY
Posts: 912
Likes: 0
Received 0 Likes
on
0 Posts
RE: 3500 RPM per volt motor ?
kV-numbers:
For DF, pylon etc you need high numbers, like 3000 or more. These motors also works in gearboxes for ordinary use in planes.
For sport/acro/pattern a medium kV number is good. Here you want to spin a "small" diameter propell with high pitch to get the speed needed.
For 3D and large sailplanes turning a large diameter propell on low RPM a low kV-Number is suited. 300-700 typically.
For DF, pylon etc you need high numbers, like 3000 or more. These motors also works in gearboxes for ordinary use in planes.
For sport/acro/pattern a medium kV number is good. Here you want to spin a "small" diameter propell with high pitch to get the speed needed.
For 3D and large sailplanes turning a large diameter propell on low RPM a low kV-Number is suited. 300-700 typically.