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Old Nov 15, 2014, 08:57 PM
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Canada, ON, Burlington
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Anyone tried the Cyclone power IR570-2000-40 motor on 6S?

Having bought the LX A10 I am now looking to build a pair of 6s fans that don't draw more than about 1200watts each. Has anyone tried the Cyclone power IR570-2000-40 motor with the CS70 10 blade fan?
http://rc-castle.com/shop/product_in...oducts_id=3360
I still am flying my ME262 with the 2855-2100 out runners on 6s with limited power (limited through the ESCs). It has been working without any issues but I would prefer to find a motor that is not needing any limitation, but also doesn't draw a lot of current as I won't need it in this next twin.
I would even prefer a 1800-1900kv motor but haven't found anything suitable.
Any suggestions?
Thanks
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Old Nov 15, 2014, 09:55 PM
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Skunk Water, Rhode Island
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http://www.highendrc.com/index_eprod...products_id=81
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Old Nov 15, 2014, 10:02 PM
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Quote:
Originally Posted by St. Martin View Post
Has anyone tried this motor with the high blade count fans? I think the power listed is based on old fans with low blade counts.
Thanks Eric
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Old Nov 15, 2014, 10:52 PM
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I ran it on 5s-2200, in a Lander Cougar that was lightened. Was only 30A with the CS-10.

Fuzz
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Old Nov 16, 2014, 01:25 AM
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3W25 on 6s = 2W25 on 4s in terms of power&performance

the 3W25 should be about the same power and efficiency on 6s like the 2W25 on 4s, they have about the same weight, too (2W25 is great on the 10-blader):

6 times 1800kV is pretty much the same as 4 times 2700kV

the 2W25 got a 4mm shaft some time ago hwhereas the 3W25 is still on 3.17mm,, and could be bought pretty cheap in many shops (not at HET directly, there's the same price), but as usual it depends if you want to run 4s or 6s., current should be some 40A though on the 3W25

http://www.highendrc.com/index_eprod...products_id=80

PS: I had a 2W25 on 4s in my FlyFly Mirage. Good sound, but I had the impression that the fan is severely overloaded with air from the oversize (even for 90mm!) intakes. Should have made more bypass-holes around the open-duct fan installation, don't know, the 70mm seemed to work better/faster with others in their FlyFly Mirages. Changed to a superlight Wemo Evo, and it's way more efficient in that airframe now
Mirage FlyFly 70mm 10-blade 4s WOT works (2 min 27 sec)
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Old Nov 16, 2014, 09:04 AM
Big gov never Works
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Skunk Water, Rhode Island
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I see the benefit of using the 3W25 is amp wise, over the 2W25. Smaller packs and ESC. I always prefer higher volts, to achieve the same power. What size 4s were you using? And what amp load? At 40a, a 6s-2200 pack could be used with the 3W25. I buy cheap 25c 3s packs in series. One season EDF flying, and then use them for prop planes in 3s.

I love watching your videos. "down the hill, around the trees, to grandmas house". Plus you fly at realistic speeds.

Fuzz
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Old Nov 16, 2014, 09:48 AM
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Fuzz, this thing about using weaker/cheaper lipos when going higher Volts for the same power is not true at first glance (because the lower cell lipos will have correspondingly higher capacity...), BUT there may be (at least something) to it in practice, observing that lipo manufacturers get closer to their claimed c-rating on smaller lipos rather than the bigger lipos of the same lineup. Maybe to do with chemical reactions facilitated in smaller volumes. AND if you're using the most popular size, 2200mA 3s, you get particularly good deals on your lipos.
Concerning ESCs, it depends, in this very case you are right: I usually use cheap and light Blue Series 60As, and here I worried to get over 60, so I used a - much heavier - 70A ESC. Might not have needed it , the two 1600mA 4s Zippy Compacts 35C I had in parallel were getting really warm, but then it was mostly WOT...
What I don't like on anything more than 5s is the sparking...IMO a nice compromise, and both lighter and cheaper than the HET: the L-2855 2100kV outrunner on 5s I am running in my Habu on2450mA, but it doesn't match an inrunners smooth running, and efficiency...

I think Eric asked for use in a twin setup, then it makes even more sense to go for lower currents

PS: glad you like my videos! I'm afraid though that the "realistic speed" is not intentional, my planes just don't fly faster than seen on the videos (however they sometimes may look slower than on other people's videos because mx headcam setup makes for less shaky videotaping than what is often seen - downside is: no zoom on the hatcam, so you have to fly pretty close...)
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Old Nov 16, 2014, 11:55 AM
Big gov never Works
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Skunk Water, Rhode Island
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My fav ESC, for these lower currents is the ZTW-40. The standard black shrink. I read here on RCG, that ZTW makes ESC's for popular(and more expensive) ESC's. I have never had one fail.

I like to shoot for 400-600W. And I can do this with packs no higher than 2200. Just adjust the cell count and Kv to stay in the 25-40A range. I find it even helpful on certain designs, to have a 2p/2s or 3s, for a 4s or 6s pack. A single series pack/brick to get that cell count, sometimes just does not fit.

I flew the Lander Cougar for two yrs, on the CS10 and 3W25. I stripped the jet of un-needed ply, retracts, and anything else I did not need. On the 2200-5s, it was not fast, but would climb very well. And sounded real good. The 3W25 never broke a sweat. I even remembered to open the exhaust to 61mm.(this being my first flight exp with the CS10)

Since then, I have used the ARC 28-47-1.5 in the CS10 on 4s and 5s. 5s was too much. I have a set of plans for an A-10. I think this is the best way to use the CS. The A-10 being a jet that needs to have more static than dynamic thrust, the CS fits the bill fine in a mild 400W system x 2. In low power use, I noticed much better static thrust than any other low blade count fan. At least is feels that way in the air.

Fuzz
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