Espritmodel.com Telemetry Radio
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Old Aug 28, 2012, 01:54 PM
Always Fly 2 Mistakes High!
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Houston, Texas
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Thanks for the input. I plan on running at an avg of 92 amps so I think I'm good with the EC5's. I just got a package (my first one) and man, they are huge connectors. I like 'em already. Will be much easier to solder in the UBEC with these.
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Old Aug 28, 2012, 02:08 PM
Should've, Would've, Could've
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United States, CA
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Another reason why I love em, easy to solder and with 6s lipo wires u need that extra room for your separate bec.
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Old Aug 28, 2012, 02:37 PM
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Quote:
Originally Posted by Ispintechno View Post
Popped in a hobby king 2800kv motor from my F-4 into a vanilla CS10 last night. Going to bench test it in the next few days using plush 60amp esc (with 80 amp burst) on medium and high timing off 4S 30C. I'll report the numbers if nobody has tried this set-up.
That looks like the 2839 Hercules (freewing) motor. It's really a 3000kv motor.

Expect to see more than 70amps. Try on Low timing first.
I 've got this setup but haven't installed it in a plane yet.
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Old Aug 28, 2012, 10:57 PM
Defender of the park sky
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London, ON Canada
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Quote:
Originally Posted by anlucas View Post
That looks like the 2839 Hercules (freewing) motor. It's really a 3000kv motor.

Expect to see more than 70amps. Try on Low timing first.
I 've got this setup but haven't installed it in a plane yet.
I think you are right on the money there, I bought it over a year ago as the HK2839 rated at 2800kv but several comments on the HK website suggest this motor is really 3000kv. It propelled my FMS F-4 to a pretty good top speed with a 6 blade HK rotor. I'd say on par with the Habu anyway.
Thanks for the heads up, first run up will be on low timing.
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Old Aug 29, 2012, 02:45 AM
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I have a 2w 20 motor and when i run it up it gets hot should it do that i havnt put any load on it at the min
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Old Aug 29, 2012, 06:22 AM
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You ran it just as it came?
You should not do that. Certainly not to full RPM. And also not to run very long at all that way - somewhat OK up to some lowish speed.
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Old Aug 29, 2012, 07:59 AM
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Originally Posted by PeterVRC View Post
You ran it just as it came?
You should not do that. Certainly not to full RPM. And also not to run very long at all that way - somewhat OK up to some lowish speed.
no it was at low speed just got warm just wandering if this was normal
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Old Aug 29, 2012, 09:57 AM
scunna
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United Kingdom, England, South Shields
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bought 5x 5mm shaft adapter from mark at extreme rc for 70mm cs10 fans and using bl32 motors from e-flite i am getting some good results. on 5s it pulls 1200 watts on 6s it pulls 1800 watts all fans so far have not needed balancing. My mate put one in his small t-45 sound's awesome

hk t-45 64mm edf fitted with changesun 10 blade fan bl32 motor on 6s 3300 (3 min 34 sec)
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Old Aug 29, 2012, 10:24 AM
speedin n da weeds :)
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anyone know if the blades are like the haoye 7 blade rotors??
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Old Aug 29, 2012, 10:31 AM
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Originally Posted by sikky View Post
anyone know if the blades are like the haoye 7 blade rotors??
Don't know which aspect of the 7bladers you refer to but these seem to be a different concept.
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Old Aug 29, 2012, 02:28 PM
speedin n da weeds :)
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blade twist /pitch, about the same just another blade added??
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Old Aug 29, 2012, 05:49 PM
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Originally Posted by sikky View Post
blade twist /pitch, about the same just another blade added??
Not in that respect. Similar to other multiblade 90mm fans but cut down.
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Old Aug 29, 2012, 06:02 PM
Big gov never Works
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Skunk Water, Rhode Island
Joined Jul 2002
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Quote:
Originally Posted by scunna View Post
bought 5x 5mm shaft adapter from mark at extreme rc for 70mm cs10 fans and using bl32 motors from e-flite i am getting some good results. on 5s it pulls 1200 watts on 6s it pulls 1800 watts all fans so far have not needed balancing. My mate put one in his small t-45 sound's awesome

http://www.youtube.com/watch?v=szqOefK78eY&feature=plcp
Thats good to know. I have the same set-up, with the Efflux alloy shroud and Tams adapter/spinner washer assembly. I knew his was doing 80A@ 1800W on 6s, But I was estimating 1100-1200W on 5s. How was your amp draw on 5s, around 55A?

I flew an RBC Panther with a Minifan for 3yrs @ 1200W and 4.2#. Great flyer. I need another only with the above CS10 combo on 5s.

Fuzz
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Old Aug 29, 2012, 10:01 PM
Defender of the park sky
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London, ON Canada
Joined Nov 2009
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Quote:
Originally Posted by anlucas View Post
That looks like the 2839 Hercules (freewing) motor. It's really a 3000kv motor.

Expect to see more than 70amps. Try on Low timing first.
I 've got this setup but haven't installed it in a plane yet.
I tried it on the bench today. My transmitter battery for the timing card however was dead so I decided to run it up on high timing anyway... lol

First run up had the power meter on AMPs, got up to 45.4 amps. Not very alarming, so I switched it over to watts and ran it up again. Got up to about 671watts. Then watched the watts slowly drop to 660, 650, 640... everything went dead. Motor was really hot, ESC was still pretty cool. unpluugged everything, let the motor cool, plugged it in again, no dice, no beeps from esc nothing.
Either killed the motor or the ESC. Thank gawd it was on the bench and not in the plane. In hindsight low timing might have saved it but I don't think this is the right motor for this fan. Motor was damn loud too. Didn't sound very good.
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Old Aug 29, 2012, 10:04 PM
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I bought the fans from hk/hc... The molding of the blades and duct seems very rough, is it normal? There a lot of jaggered edges and stuff... Do I sand them down?
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