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Old Jul 29, 2013, 01:35 AM
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That will simply buff out
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XRP 14 Blade 70mm Fan Unit


Just saw this released on the X-Flight web site - I wonder how this will compare with the 10 and 12 blade 70mm units?

http://www.x-flight.com.hk/?sp=&p=6&...w=&lang=en&ev=
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Old Jul 29, 2013, 10:06 AM
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I was just thinking about getting a 12-blade one for the Vampire. Now I've ordered both the 12-blade and 14-blade ones. I wonder where the limit is - will we be seeing 20-blade 70mm fans before too long?
Old Jul 29, 2013, 10:41 AM
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I would say the limit is under 10.

Oliver
Old Jul 29, 2013, 11:49 AM
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14 blade thrust to watt claims look nice...worth trying
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Old Jul 29, 2013, 05:03 PM
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I bet the efficiency is down form the 10 blade which sounds good enough to me. For applications where a person wants a scale looking fan like an airliner or an A-10...this would be great! Those type of planes can take the efficiency hit. This would look so good on those Wingrider B737s.
Old Jul 29, 2013, 06:18 PM
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efficiency down, wooooshhhh up. what people will buy! lol am I reading that correctly? $16 bucks for a fan?

Static Thrust: 1250g ( 2lbs ) 48A the efficiency would exponentially decrease after this mid range peak number. just my hunch..
Last edited by stoneenforcer; Jul 29, 2013 at 06:23 PM.
Old Jul 29, 2013, 07:58 PM
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...we will see. The 12 blade was not too bad from what people said...so maybe the 14 blade will just be another bump down. I mostly worry about the shaft adapter quality with these fans. I guess there are aftermarket adapters that will probably work with this rotor as it looks similiar to the 10 and 12 blade rotor adapter style.
Old Jul 29, 2013, 08:01 PM
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...of course you only see the rotor when the plane is static...so i guess it is not really worth losing the performance for me. i think i will wait for the other high-blade count 70mm fan coming out soon.
Old Jul 29, 2013, 08:39 PM
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4.5lbs thrust peak > 4lbs of settled ~ 1100 watts 30usd shipped for the 10 blade and an L2855 2300kv ... worth waiting on ..The 12 blade 70mm settled numbers are even better

Turnigy L2855-2300kv - 5S - CS 10 Blade Test (2 min 11 sec)


Some CP motors Proper ducting brings out the performance, plenty of vids to attest to

No need to pay 2 - 3 times more for 1 to 2% increase in performance with the 10 and 12 blades and proper ducting

The shaft adapters on the v3s balance out of the box, 3 - 4 clock turns

What one gets with the 2 - 3 times more in cost with some rotors is the increase in max RPMs and therefore increase eflux and some others attributes

We'll see, they've had a miss before...mostly hits
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Last edited by erh7771; Jul 29, 2013 at 08:52 PM.
Old Jul 29, 2013, 10:10 PM
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Is XRP a whole nother fan or is it another ChangeSun? I love my 12B so I may get the 14 till I find a good application. Maybe a BL32/6S/14B??!!
Old Jul 30, 2013, 12:03 AM
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XRP not another ChangeSun
http://www.windrider.com.hk/product.asp?id=170

Ming Lou
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Old Jul 30, 2013, 07:36 AM
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So what is the difference between the two fan?
Old Jul 30, 2013, 08:35 AM
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More balance and sound.

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Old Jul 30, 2013, 09:55 AM
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Is the rotor as rigid as the CS fans?. So they are somewhat balanced? What about the collets, are the made "true".
Old Jul 30, 2013, 12:49 PM
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Quote:
Originally Posted by Ming View Post
More balance and sound.

Ming Lou
Ming, the XRP 70mm 14 blades EDF unit are pre balanced?


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