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Jul 26, 2012, 08:20 AM
We shall serve the Lord
kingsflyer's Avatar
Quote:
Originally Posted by Ruyman View Post
With this electronics that engine and propeller would be the correct ones?
Any of the approved EF-1 motors would work fine with the 8x8E racing prop for speed. I fly the 10x7E and the E-flite motor on my Sundowner 36 with the same battery setup for sport flying.

http://www.horizonhobby.com/products...50kv-EFLM4025B

OS Brushless Motor OSMG9525, 1200 Kv motor. Product number: OMA-3820-1200
http://www.osengines.com/motors/

McD
Last edited by kingsflyer; Jul 26, 2012 at 06:52 PM.
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Jul 26, 2012, 04:25 PM
Registered User
Quote:
Originally Posted by kingsflyer View Post
Any of the approved EF-1 motors would work fine with the 8x8E racing prop for speed. I fly the 10x7E and the E-flite motor on my Sundowner 36 with the same battery setup for sport flying.

http://www.horizonhobby.com/Products...odID=EFLM4025B

OS Brushless Motor OSMG9525, 1200 Kv motor. Product number: OMA-3820-1200
http://www.osengines.com/motors/

McD
It is best to choose the E-flite 25 BL which is the one they have in the store where I ask the aircraft. You say you're going with a propeller of 8x8E guess that with 4S. And with the 10x7E it is also with the 4S?

The problem I see is that most 3000 amps up lipos and mine are only 2500 4S. Which propeller would be correct that even if you lose a bit of Watts WINS flight duration?

Also I am concerned about the bolts to attach the engine to the base. I have read something like that which comes with the Kit of the aircraft do not serve E-flite 25BL. As you solve this problem?

Sorry if you don't understand much, because I use an online translator.

Thank you.
Jul 26, 2012, 06:57 PM
We shall serve the Lord
kingsflyer's Avatar
I use the E-flite Power 25, 1250 kV.

http://www.horizonhobby.com/products...50kv-EFLM4025B

Be sure you get the 1250 kV version!

If fly with the same 4S packs with both props. 2500 mah packs will work fine. Be sure that are at least 30C rated packs. Flight times with the 8x8E prop are about 3 minutes. Flight times with the 10x7E are about 4.5 minutes.

The Power 25 uses the 30mm spacers and the 45mm bolts that are included with the kit and they fit just fine.

RC airplanes are a universal language!

McD
Latest blog entry: LEDs on my T-28
Jul 27, 2012, 02:59 AM
Registered User
Quote:
Originally Posted by kingsflyer View Post
I use the E-flite Power 25, 1250 kV.

http://www.horizonhobby.com/products...50kv-EFLM4025B

Be sure you get the 1250 kV version!

If fly with the same 4S packs with both props. 2500 mah packs will work fine. Be sure that are at least 30C rated packs. Flight times with the 8x8E prop are about 3 minutes. Flight times with the 10x7E are about 4.5 minutes.

The Power 25 uses the 30mm spacers and the 45mm bolts that are included with the kit and they fit just fine.

RC airplanes are a universal language!

McD
Hello MCD again!

If my lipos are 45C and peaks of 90C with which to bear well discharge. now the flight times that I put are with a 2500 as mia or more amps lipo? But I well understand that I want to say that with a 10x7E propeller consumed less amps and probably also help curb the model better to land.

Also reassures me to know that spacers that comes with the kit then serve BL25 1250KV and must not modify anything. It is that I had to read something in a post that there was problem of measures.

If there is something more to keep in mind let me know!

Thank you for your help!
Aug 22, 2012, 09:29 AM
olllian
olllian's Avatar
Any one running a 6s setup if so what moter are u running I am trying to find one that can handle it.
Aug 24, 2012, 01:28 AM
Registered User
mrgriz's Avatar
Quote:
Originally Posted by olllian View Post
Any one running a 6s setup if so what moter are u running I am trying to find one that can handle it.
turnigy C4260-600 , been out of stock for a while though , can buy the clones on Ebay.

see my previous posts for details, have run a few different motors in this plane and this one makes me very happy , so much torque
Sep 05, 2012, 05:32 PM
Registered User
Any advice for slowing this plane to land? Spoilerons maybe? My runway is simply too short. I can get the plane down safely, but it rolls for approximately 37 miles after touching down.
Sep 05, 2012, 07:13 PM
Fighting Gravity
bonnie9496's Avatar
Quote:
Originally Posted by 10AE View Post
Any advice for slowing this plane to land? Spoilerons maybe? My runway is simply too short. I can get the plane down safely, but it rolls for approximately 37 miles after touching down.
Have experimented with flaperons and was pleased with the speed they bleed off on approach.
Entered Posititive 20% flap and 5% elv on my DX8 flap setting. I believe flaperons should only be deployed when on a straight line to approach. I had a nasty tip stall about 30 feet high, when turning to final
Sep 05, 2012, 08:32 PM
Pile-it
Alien_Tech's Avatar
Quote:
Originally Posted by bonnie9496 View Post
Have experimented with flaperons and was pleased with the speed they bleed off on approach.
Entered Posititive 20% flap and 5% elv on my DX8 flap setting. I believe flaperons should only be deployed when on a straight line to approach. I had a nasty tip stall about 30 feet high, when turning to final
Exactly why spoilerons are a much better alternative. I like to run spoilers (both ailerons up) as this sets a nice flat deck angle for the decent and requires minimal pitch change for the flare. The extra drag is noticeable and welcomed. Set the spoilers up so that full aileron deflection drives the down side aileron even with the trailing edge, and the up side doesn’t bind. If you get ˝” up travel at neutral, that is a good place to start. You will likely need a bit of down elevator mix to counter act the mild pitch change.
Sep 06, 2012, 06:22 AM
Registered User
guyst's Avatar

Motor and servos


I'm looking to have nice sport flights with some fast buzzes on a 4S.
What would be the best setup for a +100mph on a 4S?

I'm considering the following:
Motors:
Turnigy 4258 Brushless Motor 800kv

Wing servos (cheaper alternative to the DS388):
Did some used theTurnigy 555MG Slim Wing Servo (Metal Gear) 4.2kg / .15sec / 23g ?
Or Hitec HS-125MG Slim Metal Gear Wing Servo U
Main servos (instead of the MN48 Mini ) - Corona CS238MG Metal Gear Servo 4.6kg/ 22g/ 0.14sec

What do you guys think?
Last edited by guyst; Sep 08, 2012 at 01:55 PM.
Sep 06, 2012, 10:31 PM
Registered User
Thanks guys, spoilerons it is.
Sep 08, 2012, 01:56 PM
Registered User
guyst's Avatar
Quote:
Originally Posted by guyst View Post
I'm looking to have nice sport flights with some fast buzzes on a 4S.
What would be the best setup for a +100mph on a 4S?

I'm considering the following:
Motors:
Turnigy 4258 Brushless Motor 800kv

Wing servos (cheaper alternative to the DS388):
Did some used theTurnigy 555MG Slim Wing Servo (Metal Gear) 4.2kg / .15sec / 23g ?
Or Hitec HS-125MG Slim Metal Gear Wing Servo U
Main servos (instead of the MN48 Mini ) - Corona CS238MG Metal Gear Servo 4.6kg/ 22g/ 0.14sec

What do you guys think?
Anyone?
Sep 08, 2012, 03:25 PM
We shall serve the Lord
kingsflyer's Avatar
The 800 kV seems low for a 4S setup. The stock 1250 kV Eflite motor makes a great sport setup on 4S with a 10x7E prop.
McD
Latest blog entry: LEDs on my T-28
Sep 08, 2012, 06:33 PM
Registered User
QDRevenger's Avatar
I posted on the other Sundowner 36 thread, seems this one is more active. I didn't build mine for racing, just for a fast sports plane.

I maidened mine today in quite a strong breeze. I am running a Hyperion HS-3026-1600kv on 4S 3850mAh 65C Nano-Tech lipo's with a YEP100A ESC. Started with a slightly clipped down 8x8 APC prop to 7.5x8. No spinner to aid cooling. Could't find a mount I could use, so I made this one quickly.

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Took a bit to get it off the ground, flys like it's on rails, quite happy with the performance, but not quite as fast as what I was hoping for. Straight level passes towards the end of the flight were only 110.6mph. Will do some thinking on a faster setup. 4min flight mixed throttle, only put back 2500mAh.

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As per the reports I was expecting this to land quite hot, so I programmed spoilerons to aid the landing, she landed fine and a bit short, but may have been the wind. I also made a dual elevator linkage to stop the elevator flexing during hard turns. Will re-power for a bit more speed, time to do some more thinking. I think It could use a bigger prop as the cowl is quite deep.

QDRevenger.
Sep 09, 2012, 03:39 PM
Registered User
QDRevenger's Avatar
Update, second flight this morning, upped the timing a wee bit. 129.9mph this time, I'm happier but still not quick enough.

QDRevenger.


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