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-   -   EF Extra 300 possible conversion (https://www.wattflyer.com/forums/showthread.php?t=78231)

solentlife 01-30-2017 09:30 AM

EF Extra 300 possible conversion
 
I have the 58" Extra from EF as many know and at present it has a 90 4 stroker up front ... which hauls her round no problem.

But lately after flying the Zlin with E-Power up front - has me thinking to swap out the 4 stroker and put electric in her.

I would use the same as the Zlin ... Turnigy 5055 400KV with 6S pack ... on a 15" prop.

That would tend to consolidate on what I have without increasing my range of inventory.

I have a new untouched cowl - so that's ready to go on. Would mean cutting out the fuel engine mount and fitting suitable standoff's for E-power ...

mmmmmmm interesting .............



As you see - she has a problem of still rolling when Idle ... so E-Power would cure that.
The 4 stroker can then go in my biplane if needed or my other Zlin.

Nigel

hoosier37 02-01-2017 08:01 PM

I think you will like it. Acceleration and speed improvement very noticable. I have the newer 60 incher.

solentlife 02-02-2017 07:39 AM

I'll be honest - I don't like the model having bought it second-hand from a guy who thought he could fly ! It had minor repairs and a gutless engine in it.

It crashed due to his poor hinges one day --- that'll teach me to trust other guys work ! And needed major rebuild.

But flying the E powered Zlin is a dream .... OK no engine sound which I miss .... but nice.

I've ordered the 5055 and ESC ....

I have wood etc. to build a motor box.

Cheers
Nigel

Vic Z 02-05-2017 08:25 PM

I have a Fly Zone 300, and although I have tried hard to like it, I just can't get there. Just feels awkward and heavy in the air like it would rather fall than fly. They market it as a 3D plane but I certainly don't see it. Very stall prone IMO

solentlife 02-05-2017 09:39 PM

The EF EXtra 300 is a good model - but mine was jinxed from day one !!

Nigel

Vic Z 02-05-2017 09:51 PM

I'm taking a serious look at the 48" EF edge 540 for my first balsa plane.
Any opinions?

http://extremeflightrc.com/48-Edge-5...ack_p_288.html

solentlife 02-05-2017 10:01 PM

Seriously .... dunno ...

What I will say based on mine and others I fly with :

EF make good aircraft but a little heavier than say Precision Aerobatics. They 3D well but need that bit more grunt. PA are fragile where EF are that bit stronger.

Nigel

Vic Z 02-05-2017 10:06 PM

Was hell bent on an addiction. Then I heard that they aren't that tough, support is lacking, and they aren't an easy build. Great flyers, but everything else I don't like. I'm selfish and just in this for the fun :D

birdDog 02-06-2017 02:30 AM


Originally Posted by Vic Z (Post 1003374)
I'm taking a serious look at the 48" EF edge 540 for my first balsa plane.
Any opinions?

http://extremeflightrc.com/48-Edge-5...ack_p_288.html

I am building one as we speak. You can't go wrong with this model. EF has quite a few generations of 3D balsa and testing that have gone into these EXP series models. Longerons are carbon fiber tubing in this model. They REALLY beefed up the landing gear plate. And, AND it feels light as a feather. Amazing bird. While I havent flown this specific model I own 6 other Extremeflight/3DHS 44" to 60" models and can assure you it performs exactly as advertised. Suggested power system will be ballistic. Servos are inexpensive. One item you should get with the plane is the suggested spinner. These are high quality spinners, for cheap and they fit in the shipping box.

http://i.imgur.com/e8YDvdU.jpg?1


One thing I like to do, certainly not required, is to replace the CA hinges with Dubro nylon hinges, epoxied in. They offer zero resistance and are way less prone to failure. I also run a slightly stronger HS-70MG on the elevator. ZTW Mantis 65A and 80A ESC's (get the 80, same weight) offer a programmable 6 volt BEC. In this application, you will want the suggested Hitec servos to be running at this, maximum voltage.

http://i.imgur.com/Hydfiu5.jpg?1

Pretty proud of the hinge line :) That sucker swings 80 degrees either way!

birdDog 02-06-2017 03:18 AM

If you really want to go bananas, throw a set of these in there with a 7.4v BEC. I have them in my 47" extra and all I can say is WOW. 49 oz-in of torque and 0.05sec to 60 degrees. :eek: I just couldn't ignore the Hitec servos I had sitting on the bench for this build.

http://www.banggood.com/KST-DS215MG-...l?rmmds=search

Vic Z 02-06-2017 05:51 AM

It's between the eflite edge and this guy.

http://www.valuehobby.com/51in-sabre-x-arf.html

Having a tough time deciding.

Sorry for the hijack Nigel

solentlife 02-06-2017 06:16 AM


Originally Posted by Vic Z (Post 1003386)
It's between the eflite edge and this guy.

http://www.valuehobby.com/51in-sabre-x-arf.html

Having a tough time deciding.

Sorry for the hijack Nigel

No worries

Nigel

solentlife 11-23-2018 04:32 PM

Thought time to resurrect thread based on another where I have finally swapped over the EF Extra 300 to E-Power ..

Turnigy 5055A - 400KV
60A ESC
6S 3300
14x8 prop

Now waiting maiden.

Nigel

Wildflyer 11-24-2018 12:23 AM

I have the exact same airplane with a Turnigy propdrive 4250 500kv in it. That was the closest thing I could find to the motor Extreme Flight recommended.


I haven't flown it yet, I traded a bunch of trailer hitch parts for a RV trailer for it.

solentlife 11-24-2018 10:47 AM

4250 was my first thought ... but had the 5055 spare ...

It hauled my Zlin of similar weight into the clouds ... with 6S battery - the combo balances perfect.

Nigel

solentlife 11-26-2018 12:58 PM

Please follow on to this thread :

https://www.wattflyer.com/forums/sho...82#post1015982

Cheers
Nigel


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