Originally Posted by Ruyman

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

Originally Posted by kingsflyer

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.

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

Originally Posted by kingsflyer

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!

Any one running a 6s setup if so what moter are u running I am trying to find one that can handle it.

Originally Posted by olllian

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

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.

Originally Posted by 10AE

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

Originally Posted by bonnie9496

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 ½” 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.

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?

Thanks guys, spoilerons it is.

Originally Posted by guyst

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?

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

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.



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.



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.

Update, second flight this morning, upped the timing a wee bit. 129.9mph this time, I'm happier but still not quick enough.

QDRevenger.