Change Sun 10 blade 70mm - Page 55 - RC Groups
Thread Tools
Dec 16, 2011, 01:11 AM
3DHOG
jcdfrd's Avatar
btw our 4mm adapters fit much better than the 3.17mm adapters that we got
Sign up now
to remove ads between posts
Dec 16, 2011, 01:47 AM
RA-TA-MA-HAT-TA
munce31's Avatar
I wonder if he's had the opportunity to test the ARC motors as well.
Dec 16, 2011, 03:25 AM
Registered User
hommel's Avatar
Quote:
Originally Posted by jcdfrd
btw our 4mm adapters fit much better than the 3.17mm adapters that we got
I had exactly the opposite... Ended up sacrificing 3.17 adaptors and had them reamed to 4.00.
Dec 16, 2011, 03:38 AM
Registered User
hommel's Avatar
Quote:
Originally Posted by Burdo
I think it also has something to do with the aluminium housing. The CS is so flimsy and must created some resonance noise....or perhaps not
Perhaps I'm the only one over here, but the CS housing isn't that flimsy imo... The material and weight of the shroud will influence the sound, no doubt, but I'm pretty sure that the sophisticated roaring whoosh that Extreme his fan produces has more to do with the shape and dimension of the ducts and the fan being super silent...
Dec 16, 2011, 04:59 AM
Life begins at transition
I think the secrecy is so he can sell them. If we were all to know what to do, it'd mean less sales.

I guess if he's fried the motors to figure out what works, he might as well sell them to those who don't want to invest. It generally takes me 2 or 3 shots before I find my 'perfect' motor for each fan/plane combo, so buying a ready-done thing saves on motors!
Dec 16, 2011, 05:36 AM
Guarantee at least one landing
Burdo's Avatar
Quote:
Originally Posted by Odysis
I think the secrecy is so he can sell them. If we were all to know what to do, it'd mean less sales.

I guess if he's fried the motors to figure out what works, he might as well sell them to those who don't want to invest. It generally takes me 2 or 3 shots before I find my 'perfect' motor for each fan/plane combo, so buying a ready-done thing saves on motors!
I do agree...business is business, and its hard enough to make money out of RC these days...so good on him.

I was just having a little joke...as I find the RC community to be quite transparent with information....
Dec 16, 2011, 06:21 AM
Life begins at transition
I agree - particularly on RCG, most of us are just here for fun, so have no vested interest.

That said, with the information already out there on the fan, it wouldn't be hard to figure out what he used...
Dec 16, 2011, 07:53 AM
RC since 1979!! AMA 112747
beachflyer's Avatar
QUOTE=munce31;20150933]Flies fantastic beachflyer! Btw is there a difference between the SAPAC F-16 and the Phase 3 F-16?[/QUOTE]
I think the sapac is a little bigger. Flying surfaces are thinner on phase 3.
Not sure what rpms. Let me crunch some numbers.
Weighs in at 41 ounces with 4000mah 4cell nanotech.
I must say i have flown rc planes for over 35 years and
This sapac flys likes its on rails. Very nice, no bad tendancies.
Dec 16, 2011, 08:20 AM
RC since 1979!! AMA 112747
beachflyer's Avatar
Quote:
Originally Posted by jcdfrd
Beachflyer
do you have any rpm numbers with your setup? we have the same motor and some lower kv cyclone outrunners this fan no matter what we throw at it wont go more than 40,500rpm
Looks like I am running about 45,000 RPM
Dec 16, 2011, 08:25 AM
RC since 1979!! AMA 112747
beachflyer's Avatar
It would be nice to try a aluminum fan shroud. Dont have one right now. My last shroud I had melted and I am using one I had. I dont think its as quiet as the one that melted. I had short outrunner and it couldnt stand the temp and melted itself and everything connected. I have used inrunners here at beach and found with the humidity its best for me use outrunner to keep heat down in summer.
Dec 16, 2011, 08:36 AM
Registered User
Quote:
Originally Posted by beachflyer
Looks like I am running about 45,000 RPM
I seriously doubt that you are anywhere near 45000. See post 266 for data on what it takes to spin it at 45000+
Dec 16, 2011, 08:46 AM
RC since 1979!! AMA 112747
beachflyer's Avatar
All I did was crunched numbers. 14 volts under load times 3300KV. I usually just let the plane do the talking.
Dec 16, 2011, 08:52 AM
RA-TA-MA-HAT-TA
munce31's Avatar
Quote:
Originally Posted by beachflyer
All I did was crunched numbers. 14 volts under load times 3300KV. I usually just let the plane do the talking.
Is 3300kv loaded or unloaded?
Dec 16, 2011, 11:15 AM
Pro Hoarder
turbonut's Avatar
use volts under a load(3.5v give or take) times the motor KV..subtract 15 percent and you will be in the ballpark...so more like 39000 if your lucky
Dec 16, 2011, 11:46 AM
Another one on the way...
ysolomon's Avatar
Quote:
Originally Posted by Michael Paxton
If you can talk while flying a jet....You aren't flying fast enough!!
It kills me when someone asks "you only have 3.5 minutes of flights with this battery???", not realizing what it means to fly a jet 3 feet above runway at 120mph... You can't do this for more than 3.5 minutes without catching your breath afterwards... Oh, and you can't stop blinking for more than 3.5 minutes... Or, try flying a jet at 120mph 3ft above runway and blink...


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 7335 Jun 29, 2017 12:43 AM
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