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Old Feb 28, 2012, 07:47 AM
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Originally Posted by anlucas View Post
Taki,

I did the tests on these.

The first set is for the 2800kv, the second is for the L2855-2300kv.

901, can you please fix?
Fixed .. cut/paste issues
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Old Feb 28, 2012, 07:52 AM
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Originally Posted by clive45 View Post
More info on the MB1 look alikes please.
One of these, but with a lower kv than a MB1. It does look like the same manufacturer. A couple of us have these coming for testing.
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Old Feb 28, 2012, 08:01 AM
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Originally Posted by Extreme_RC View Post
No problems posting up my data, just put a note where it came from or a link to the fan producing it, that would be appreciated.
Thanks, will post the data with a link to your fan's product page on your site.

...
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Old Feb 28, 2012, 08:02 AM
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United States, PA, Doylestown
Joined Sep 2010
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Originally Posted by AirX View Post
The IGV/stators are designed to fit the WM400 rotor which is a pusher arrangment, the stator angles are probably not optimum to provide enough swirl recovery for efficiency. The IGV design has the stators impart a defined preswirl to the airflow so that it enters at the blade at a defined angle of attack, this allows the rotor to take the airflow and add acceleration to the flow and if the design is correct the result is straight airflow from the fan, any swirl from it and it implies in-efficiency of the system. OGV fans use the stators only to remove a certain ammount of swirl from the flow and as power/rpm rise the stator is less efficient in swirl recovery so you need more stators to help keep efficiency in a desired range.

I did say you could try it, and please post the results.

Eric B.
Certainly will - and thank you for your perspective.
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Old Feb 28, 2012, 12:31 PM
I make bad look so good.
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League City, Texas
Joined Sep 2006
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Quote:
Originally Posted by erh7771 View Post
Nor on 5s, I let mine run down the pack and let it just sit there...could barely feel the heat coming off the cone.

55a
19v minimum on 5s 3700mah 30c pack (fairly brand new)
60amps\64oz peak around 55-59oz settled.

Took it to 6s but smelt laminate half way through a 5200mah 50c pack run so I would only do burst on 6s...
74oz peak, 23 volts, 67amps...settled to around 64oz at 22volts

Yeap, I tried to burn it up but it's a tough motor.
I ordered two of these today to put in a twin engine Gloster Meteor. It should fly fine on 4S, but I like the fact that 5S is available should I feel the need for more power.

Which numbers are correct for the Turnigy L2855 – 2300KV on 4S? In this post by anlucas he is only getting 0.9kg

http://www.rcgroups.com/forums/showp...postcount=1491

but in the "consolidated test results" thread here:

http://www.rcgroups.com/forums/showthread.php?t=1601868

the same motor is showing 1.3-1.35kg?
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Old Feb 28, 2012, 01:35 PM
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Quote:
Originally Posted by SteveC68 View Post
I ordered two of these today to put in a twin engine Gloster Meteor. It should fly fine on 4S, but I like the fact that 5S is available should I feel the need for more power.

Which numbers are correct for the Turnigy L2855 – 2300KV on 4S? In this post by anlucas he is only getting 0.9kg

http://www.rcgroups.com/forums/showp...postcount=1491

but in the "consolidated test results" thread here:

http://www.rcgroups.com/forums/showthread.php?t=1601868

the same motor is showing 1.3-1.35kg?
Mine are settled numbers with the pack holding above 3.6 volts.

Also, the motor is pretty linear in power...for 4s it would take around 65-70 amps to get into the 56-64oz range.

Pray tell, where did you get a Meteor?
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Old Feb 28, 2012, 01:50 PM
I make bad look so good.
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Meteor:

http://www.rcgroups.com/forums/showthread.php?t=1161755

It's been in the works for a while, but was finally released a couple months ago.

It's big at 61" in length but the prototype flew on 900watts total power!
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Old Feb 28, 2012, 02:31 PM
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Quote:
Originally Posted by SteveC68 View Post
Which numbers are correct for the Turnigy L2855 2300KV on 4S? In this post by anlucas he is only getting 0.9kg

http://www.rcgroups.com/forums/showp...postcount=1491

but in the "consolidated test results" thread here:

http://www.rcgroups.com/forums/showthread.php?t=1601868

the same motor is showing 1.3-1.35kg?
Steve, sorry for the confusion. The first 4S results where done with a lowly 2200mah 4S which could not hold voltage AND without the inlet lip. I saw the error in my ways and all subsequent tests were done with the inlet lip on.
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Old Feb 28, 2012, 05:06 PM
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Thinking about getting one of these fans. I'm currently flying a Starmax F/A-18 with this motor on 4s. Turnigy_2226_3000kv_. Top speed around 88mph with the stock starmax fan.

I was thinking I could just swap the rotor and adapter, just not sure it will fit the starmax shroud. Anyone using this setup??

I think as much as I want to use the cs fan, I would loose top speed and gain thrust using 4s with this motor. From what I understand this motor can handle up to 5s. Maybe thats a better route, to bad I don't own any 5s packs.

, http://www.hobbyking.com/hobbyking/s...utrunner_.html

Turnigy L2226-3000kv
4S 25C
Vm: 14.3
Ap: 66.38
Wp: 949.8
Thrust(kg): 1.51
g/w: 1.59
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Old Feb 28, 2012, 05:35 PM
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Quote:
Originally Posted by SKYRYDER1000 View Post
Thinking about getting one of these fans. I'm currently flying a Starmax F/A-18 with this motor on 4s. Turnigy_2226_3000kv_. Top speed around 88mph with the stock starmax fan.

I was thinking I could just swap the rotor and adapter, just not sure it will fit the starmax shroud. Anyone using this setup??

I think as much as I want to use the cs fan, I would loose top speed and gain thrust using 4s with this motor. From what I understand this motor can handle up to 5s. Maybe thats a better route, to bad I don't own any 5s packs.

, http://www.hobbyking.com/hobbyking/s...utrunner_.html

Turnigy L2226-3000kv
4S 25C
Vm: 14.3
Ap: 66.38
Wp: 949.8
Thrust(kg): 1.51
g/w: 1.59
It's a good motor but not for 5S with this fan.

I don't think you will lose too much speed especially if you use a thrust tube.
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Old Feb 28, 2012, 05:49 PM
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Melbourne, Australia
Joined Jul 2005
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Just a point of clarification on the HK motor mount. Mine just arrived. The CS 70 central motor housing is significantly longer than the "cantilever" extension so it turns out that it is very robust. The flange is a really tight fit in the motor housing and the lip on the staor case is a snug fit also. It takes a good hard push to "snap" it in. So the motor is supported by the flange inside the tube at the front and the stator inside the tube at the back. It is very solid and there is no cantilever (bending) effect. Ends up just as solid as the Cyclone system with its O ring.

It is so tight, my guess is it won't budge even without screws but a couple of screws just long enough to reach the motor would make sure it doesn't move or rotate. The front of the motor does not reach the central disk - there is a bit of a gap - so you would not want to tighten the bolts too much or it may distort.
Quote:
Originally Posted by DerekB View Post

My only concern is the motor is now hanging waaaay back (cantilever) and increase the moment arm for breaking the plastic motor plate. What I like about the Cyclone Power design is it's braced inside the motor tube. But big price difference.
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Old Feb 28, 2012, 07:40 PM
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Quote:
Originally Posted by jj604 View Post
Just a point of clarification on the HK motor mount. Mine just arrived. The CS 70 central motor housing is significantly longer than the "cantilever" extension so it turns out that it is very robust. The flange is a really tight fit in the motor housing and the lip on the staor case is a snug fit also. It takes a good hard push to "snap" it in. So the motor is supported by the flange inside the tube at the front and the stator inside the tube at the back. It is very solid and there is no cantilever (bending) effect. Ends up just as solid as the Cyclone system with its O ring.

It is so tight, my guess is it won't budge even without screws but a couple of screws just long enough to reach the motor would make sure it doesn't move or rotate. The front of the motor does not reach the central disk - there is a bit of a gap - so you would not want to tighten the bolts too much or it may distort.
This thread is getting so long, I had to go back and refresh my memory. Was it the Turnigy SK3 3516-3300? And these were anlucas numbers:

Turnigy SK3 Fandrive - 3516-3300kv
4S 3000 40C
13.59Vm
87.5Ap
1215.0Wp
1.75Kg Trust


Based on your description, I drew a little sketch to see if I understand correctly. My CAD software is at work, otherwise I could have done a bang-up job. But I had to muddle through Adobe Illustrator. This is a cross section of the "extension" inside the CS motor tube, and there is a gap at the front.

If my interpretation is correct, maybe you could cut some spacer tubes from carbon tube or thick walled aluminum tube, then tighten the 4 screws as normal?

If this is working for you, I'm ordering some tonight!!! On my Boeing 737, the term "fasten your seatbelts" will take on a whole new meaning .
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Old Feb 28, 2012, 08:41 PM
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Old Feb 28, 2012, 10:59 PM
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Greece, Attica, Athens
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Quote:
Originally Posted by DerekB View Post
This thread is getting so long, I had to go back and refresh my memory. Was it the Turnigy SK3 3516-3300? And these were anlucas numbers:

Turnigy SK3 Fandrive - 3516-3300kv
4S 3000 40C
13.59Vm
87.5Ap
1215.0Wp
1.75Kg Trust


Based on your description, I drew a little sketch to see if I understand correctly. My CAD software is at work, otherwise I could have done a bang-up job. But I had to muddle through Adobe Illustrator. This is a cross section of the "extension" inside the CS motor tube, and there is a gap at the front.

If my interpretation is correct, maybe you could cut some spacer tubes from carbon tube or thick walled aluminum tube, then tighten the 4 screws as normal?

If this is working for you, I'm ordering some tonight!!! On my Boeing 737, the term "fasten your seatbelts" will take on a whole new meaning .
Derek,

No. the sk3 does not fit the shroud. Had to use another one.

And a small detal. It died on first flight.
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Old Feb 28, 2012, 11:38 PM
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Cape Coral, FL
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Quote:
Originally Posted by anlucas View Post
Derek,

No. the sk3 does not fit the shroud. Had to use another one.

And a small detal. It died on first flight.
Bummer. OK, I'll just have to wait for jj604 to reply and see which motor he is referring to.
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