SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jan 25, 2015, 07:05 AM
Registered User
Vienna, Austria
Joined Apr 2007
2,243 Posts
2100kV 5s fine on 10-blader

Quote:
Originally Posted by 4stripes View Post
The Turnigy L2855-2100 will work fine on 5s giving 900watts power.
rather, consuming 900W - what they put out is another question, I felt that the load of the 10-blader would already be more than enough, and from a certain point, you don't get more power out but just more heat, lowering your efficiency further, so I would not use it with the 12-blade rotor
BUT sure like the 2100 on 5s, my Habu really moves. The motor does get warm, even with throttle management, and with the endcap almost completely taken off the motor (thanks 4stripes for those enlightening measurments with enlarged holes in the endcones of the L-2855 motors, I always drill them out to 10mm now, and on the hard-working ones like this 5s 2100kV I pretty much take most of it off)

Habu 10-blade 5s 2450mA 2100kV outrunner (2 min 36 sec)
mopetista is online now Find More Posts by mopetista
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 25, 2015, 07:15 AM
Registered User
4stripes's Avatar
Canada, ON, Burlington
Joined Jan 2009
3,709 Posts
I like both the 12 and 10 blade fans but am now favouring the 10 blade due to the reduced load and same good sound.
4stripes is offline Find More Posts by 4stripes
Reply With Quote
Old Jan 25, 2015, 07:22 AM
Registered User
Vienna, Austria
Joined Apr 2007
2,243 Posts
Quote:
Originally Posted by 4stripes View Post
I like both the 12 and 10 blade fans but am now favouring the 10 blade due to the reduced load and same good sound.
+1, since they came out with the V3 housing for the 10-blade rotor (for motors with larger diameter) , there is no longer a reason to use the 12-blade IMO, except to fine-tune load (like running the 12-blade on the 2300kV on 4s, moving from low 40s (10-blade) into the high 40s amps-wise.
and I suspect (meaning I don't know) that the 10-blader, with the smaller area "covered by the blades" will be a little bit better in coping with back pressure, or more difficult inlet situations.
I do prefer 12.-bladers in certain planes, i.e., when the stock fan is larger, then the 12-blader with its bigger rotor and shroud diameter fits better (Unique models T-50. all LanXiang 70mm planes, e.g.)
mopetista is online now Find More Posts by mopetista
Last edited by mopetista; Jan 25, 2015 at 09:04 AM.
Reply With Quote
Old Jan 25, 2015, 07:53 AM
Registered User
latinajet's Avatar
Joined Feb 2011
197 Posts
If you use the rc lander 2800kv, het 2w23, you can run more kv and be 1200 plus watts.
latinajet is offline Find More Posts by latinajet
Reply With Quote
Old Jan 25, 2015, 08:24 AM
Registered User
Vienna, Austria
Joined Apr 2007
2,243 Posts
true, but since I am more interested in Watts-out than Watts-in, I rather go with the 2W25 on 4s than the 2W23, same power out, less power in. There are no miracles in electronics. The 2W25 is 110g, of course you can get more power with heavier motors, it all depends what you want. The L-2855 2100kV is not only extremely cheap, it's also just 95g or so. The big Lander (aka Dr Mad Thrust) inrunners are good for much more power, but they are also much heavier.

Horses for courses...
mopetista is online now Find More Posts by mopetista
Last edited by mopetista; Jan 25, 2015 at 09:02 AM. Reason: typo
Reply With Quote
Old Jan 25, 2015, 08:58 AM
Registered User
latinajet's Avatar
Joined Feb 2011
197 Posts
True.. if you want to chance it on cheap laminate getting hot and magnets letting go and destroying your plane it's your call talk to Elmer at edfhobbies.com the difference in motor quality is the glue or laminate used to hold the magnets together. Plus even though I was one of the best balancers on here a out runner spinning all that heavy mass is impossible to get perfect at every rpm. There is to much play and not enough support to spin that big heavy bell housing perfect. That vibration tears up the plastic housing eventually and the complaints start flying about cheap materials used in CS or other fans plastics. When it was really poor choices in motors. The plane and time spent building is more than a few bucks savings. But if it wasn't for hobby king selling alot junk at first before the rebranded lander motors or poor RTF s from banana or over priced lenher or nue there would of been no need for edfhobbies.
latinajet is offline Find More Posts by latinajet
Reply With Quote
Old Jan 25, 2015, 09:06 AM
Registered User
4stripes's Avatar
Canada, ON, Burlington
Joined Jan 2009
3,709 Posts
In runners are certainly the easiest motors to use for a smooth running EDF but with some simple steps, an Outrunner can be made to run with similar smoothness. I've done it many times. The simple wire trick I posted before works like a miracle for getting an Outrunner balanced, without any need to disassemble motor or complete fan.

Sure, there are many modellers who experience catastrophic failures, but they haven't figured out how, or taken the time to balance their EDFs properly.

http://www.rcgroups.com/forums/showthread.php?t=2158554
4stripes is offline Find More Posts by 4stripes
Last edited by 4stripes; Jan 25, 2015 at 09:16 AM.
Reply With Quote
Old Jan 25, 2015, 11:00 AM
Registered User
latinajet's Avatar
Joined Feb 2011
197 Posts
Cyclone power is it's own league made for rc castle by rc lander uses 3 to 4 bearings vs 2 on the turning motor! They turn out really good. They use very good laminate and hold up good. But a 20 dollar more in runner with 6 poles will work and better and be lighter. I used a dynamic balancer none of your back yard wire, cell phone, prop balancer crap. But then again im perfectionist I'm also the one making 930 rwhp and holding the world record on stock bottom end in my camaro for 3 years now but none of it could of been done without taking the the time to have it balanced perfect. Others need 4340 forgings.
latinajet is offline Find More Posts by latinajet
Reply With Quote
Old Jan 25, 2015, 11:59 AM
Registered User
4stripes's Avatar
Canada, ON, Burlington
Joined Jan 2009
3,709 Posts
Not exactly sure what your muscle car has to do with this discussion, or being a perfectionist. Could you please elaborate?
Seriously. Whatever turns your crank.
I enjoy making my fan work. And I suspect they sound better than any of yours.
No cell phones here either.
4stripes is offline Find More Posts by 4stripes
Reply With Quote
Old Jan 27, 2015, 06:37 PM
Extreme CNC Alloy EDF
Extreme_RC's Avatar
Australia
Joined Mar 2006
11,812 Posts
A perfectionist would take the time to perfect his grammar as well right?
Extreme_RC is offline Find More Posts by Extreme_RC
Reply With Quote
Old Jan 27, 2015, 06:59 PM
Registered User
Waterford, ON, Canada
Joined Nov 2007
261 Posts
Quote:
Originally Posted by Extreme_RC View Post
A perfectionist would take the time to perfect his grammar as well right?

Now THAT was funny- snorted my wine in fact. Hey Mark , gonna contact you soon about a 90mm 6s setup (people say "gonna" so it's gramatically ok to use the vernacular).
Tom
pogoed is offline Find More Posts by pogoed
Reply With Quote
Old Feb 01, 2015, 05:12 PM
Flying 2 Fight Cancer
Elec 1800's Avatar
corona, ca
Joined Feb 2011
3,793 Posts
Phase 3 f16 maiden with CA 70mm 10B running with a HET 2w 22

Phase 3 F16 (3 min 28 sec)
Elec 1800 is offline Find More Posts by Elec 1800
RCG Plus Member
Old Feb 03, 2015, 01:51 AM
Extreme CNC Alloy EDF
Extreme_RC's Avatar
Australia
Joined Mar 2006
11,812 Posts
Quote:
Originally Posted by pogoed View Post
Now THAT was funny- snorted my wine in fact. Hey Mark , gonna contact you soon about a 90mm 6s setup (people say "gonna" so it's gramatically ok to use the vernacular).
Tom
LOL, sorry missed your post, I hear snorting your wine is the new in thing now, antioxidise your nostrils n all
Extreme_RC is offline Find More Posts by Extreme_RC
Reply With Quote
Old Feb 03, 2015, 05:32 PM
Registered User
Waterford, ON, Canada
Joined Nov 2007
261 Posts
Really burns though...
pogoed is offline Find More Posts by pogoed
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product Change Sun 12 blade 90mm Flip Flop Electric Ducted Fan Jet Talk 7130 Yesterday 08:34 PM
New Product Change Sun 120mm and new 10 blade 70mm fans Flip Flop Electric Ducted Fan Jet Talk 131 Apr 27, 2012 08:07 PM
Sold Change Sun electric retracts Flip Flop Aircraft - Electric - Jets (FS/W) 3 May 23, 2011 07:20 AM
Sold Change Sun Electronic retracts w/Lander struts hole digger Aircraft - Electric - Jets (FS/W) 2 May 06, 2011 02:27 PM
Sold Change Sun Electric retracts NIB 75.00 jzuniga Aircraft - Electric - Jets (FS/W) 2 Sep 03, 2010 10:36 AM