RE: Long-EZ 46 Conversion to Electric  
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All Forums >> RC Airplanes >> ARF or RTF >> NitroModels Support >> RE: Long-EZ 46 Conversion to Electric
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RE: Long-EZ 46 Conversion to Electric - 2/28/2007 1:52:47 AM   
stall_warning


 

Posts: 14
Joined: 9/14/2006
From: Mountain Top, PA, USA
Status: offline 		What would be a good CG for the Electric conversion?

I'm thinking that the stock CG would be nose heavy for the electric.

(in reply to re2smpc)
       Post #: 51

RE: Long-EZ 46 Conversion to Electric - 2/28/2007 4:56:25 PM   
opjose



Posts: 5830
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		Careful!

This is a "pusher" so it tends to nose up.

You should leave the C.G. at the default initially then try SMALL adjustments after you have flown the plane.

e.g. less than .5"



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Build em'', fly em'', crash em'' and build more.

(in reply to stall_warning)
       Post #: 52

RE: Long-EZ 46 Conversion to Electric - 3/1/2007 2:21:40 AM   
re2smpc


 

Posts: 43
Joined: 11/4/2005
From: Downingtown, PA, USA
Status: offline 		I agree. It does not matter if you keep it glow or convert to electric, the CG point should not change. (The balance point for glow is set for empty tank condition. For electric there will be no change in weight during the flight.) I set mine at the specified 430mm back from the leading edge of the canard. It's been a while since I posted any new pictures of my conversion. (See images posted earlier in this thread.) The plane is now finished and ready for its first flight. Just waiting for warmer weather. (Winter is almost over here in PA.) I was surpised that after all the changes I made in equipment (for electric power) that I only had to add 1/4 oz of weight to the nose to get it to balance at 430mm. (I was very happy with that!) I will post images of the finished project soon.

(in reply to opjose)
       Post #: 53

RE: Long-EZ 46 Conversion to Electric - 3/2/2007 4:56:19 AM   
stall_warning


 

Posts: 14
Joined: 9/14/2006
From: Mountain Top, PA, USA
Status: offline 		Thanks for the input.

I haven't received it yet. Was just running it thru my head what a full tank does to the balance point.
It has to be able to fly with a full tank as well.

On the electric flying wing, I prefer them slightly nose heavy to help with the
tip stall at slow speed. If the default CG works well for others on the conversion,
I'll go with that.

(in reply to re2smpc)
       Post #: 54

RE: Long-EZ 46 Conversion to Electric - 5/22/2007 4:49:37 AM   
cartwrig


 

Posts: 2
Joined: 2/25/2002
From: Crystal Lake, IL, USA
Status: offline 		I got to enjoy Michael Ramsey's (Assoc. Editor at the AMA) little jaunt around the airfield with a Long-EZ 40, all decked out with Axi 2626/12, etc.

I had my camcorder with me back in March, when it happened. I just got it uploaded to YouTube:

http://www.youtube.com/watch?v=L18WV2BZWM8 .

Enjoy,
- Rob

(in reply to re2smpc)
       Post #: 55

RE: Long-EZ 46 Conversion to Electric - 6/22/2007 11:13:26 PM   
re2smpc


 

Posts: 43
Joined: 11/4/2005
From: Downingtown, PA, USA
Status: offline 		Finally had the Long-EZ electric conversion up for it's maiden flight last week. Video is posted on Youtube. The link is below. It was windy but we went forward with the flight. Even though I installed an air duct, the motor and battery got very hot after a 5 minute flight. Speed controller was not affected and remained cool. I'm now designing some additional ducts (2 sets) that will blow air directly on the battery and motor. Anyone out there think I may have another problem other than not enough airflow?

Electric Conversion Long-EZ Maiden Flight

(in reply to cartwrig)
       Post #: 56

RE: Long-EZ 46 Conversion to Electric - 5/15/2008 7:39:21 AM   
hot_peng


 

Posts: 15
Joined: 3/5/2005
From: wellingtoncity, NEW ZEALAND
Status: offline 		Hi Rube, I'm too building an EZ-46 (Nitro-plane) The pirst problem I had with the kit was no instruction booklet... But then Heaven sent me hero to save the day, Alein Sent me a the digital plan. How ever, After looking through the manual, I was reallised that it didn't help at all. So I'm currently going with my instict !.

I have a couple of set up question to ask you

1# Do you think adding flap will help making the Take-off / Landing any easier ?
2# Is it possible at all to fly the plane "Slower" than how it meant to fly ??? , If yes , With what set up???, (ie higher pitch prop ???)

Secondly, I also have Rutan Quicky-46 (Rich model) , sitting in the box, waiting to be put together.
How does it flies ? Any tips you can suggest me ?

Thank you Rube



_____________________________

life is like "cooking" food, if you follow the cook book ,it's get too boring. same goes to flying.

(in reply to Rube Goldberg)
       Post #: 57

RE: Long-EZ 46 Conversion to Electric - 5/15/2008 4:13:45 PM   
G_eronimo


 

Posts: 14
Joined: 5/5/2007
From: North Las Vegas, NV, USA
Status: offline
quote:

ORIGINAL: hot_peng
...
I have a couple of set up question to ask you
1# Do you think adding flap will help making the Take-off / Landing any easier ?
2# Is it possible at all to fly the plane "Slower" than how it meant to fly ??? , If yes , With what set up???, (ie higher pitch prop ???)
...


Hello hot_peng,

Flaps are usually NOT recommended for a Canard-Plane.
If you apply flaps, there will be an additional momentum which will try to put the nose down. The more flap, the more nose down. As the canard stabilizer is already heavy loaded (wing loading around twice the amount of the main wing), it is highly possible, that it can not produce enough lift to fly straight on. There are some Twinwing/Canard desings, which have flaps, but they have additional things built in to prevent that nose-down.

Canards are usually a bit faster, then their "normal colleagues" due to their design as a canard. A "slow" canard looks a bit different, then this one.
But you can try a prop with less pitch or fly with a little less throttle. If you could reduce the weight, you could fly slower too. But with an ARF it is not that easy to get.

Uli

(in reply to hot_peng)
       Post #: 58

RE: Long-EZ 46 Conversion to Electric - 5/18/2008 6:11:26 AM   
shotgun06



Posts: 112
Joined: 5/24/2007
From: Portage la Prairie, MB, CANADA
Status: offline 		Flaps are not practical on a canard as previously mentioned by Uli, this is why the real Long EZ has a speed brake instead of flaps and the reason why I modified mine with a speedbrake.

Alain

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Alain

(in reply to G_eronimo)
       Post #: 59

RE: Long-EZ 46 Conversion to Electric - 5/18/2008 9:14:42 AM   
SansHeli



Posts: 65
Joined: 6/1/2006
From: Brisbane QLD, AUSTRALIA
Status: online
quote:

Flaps are not practical on a canard as previously mentioned by Uli, this is why the real Long EZ has a speed brake instead of flaps and the reason why I modified mine with a speedbrake.


Hi Alain - could you please post pictures of your speed brake? Also - can you comment on how effective it is and does it change the flight characteristics to any large degree?

Thanks.

SansHeli

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(in reply to shotgun06)
       Post #: 60

RE: Long-EZ 46 Conversion to Electric - 5/19/2008 5:05:24 AM   
hot_peng


 

Posts: 15
Joined: 3/5/2005
From: wellingtoncity, NEW ZEALAND
Status: offline 		Uli - Alain , Guys, Thanks for your advise I've never know that Carnard design are so complicate and so different from contemporary design. One day some wise man will come up with the way to set up the carnard to fly slow.

For the mean time, Here is 12 different colour theme for my EZ, borrowing some design feature from Alain EZ , Can you guys help me pick one !!!

Thanks guys

_____________________________

life is like "cooking" food, if you follow the cook book ,it's get too boring. same goes to flying.

(in reply to G_eronimo)
       Post #: 61

RE: Long-EZ 46 Conversion to Electric - 5/19/2008 5:19:54 AM   
hot_peng


 

Posts: 15
Joined: 3/5/2005
From: wellingtoncity, NEW ZEALAND
Status: offline 		Here are 6 different design for a red theme "RED HOT"

Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by hot_peng -- 5/19/2008 5:23:08 AM >

_____________________________

life is like "cooking" food, if you follow the cook book ,it's get too boring. same goes to flying.

(in reply to hot_peng)
       Post #: 62

RE: Long-EZ 46 Conversion to Electric - 5/19/2008 5:21:40 AM   
hot_peng


 

Posts: 15
Joined: 3/5/2005
From: wellingtoncity, NEW ZEALAND
Status: offline 		Here are 6 different Alteration of "Blue Series " " Cool and Smooth "

Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by hot_peng -- 5/19/2008 5:27:35 AM >

_____________________________

life is like "cooking" food, if you follow the cook book ,it's get too boring. same goes to flying.

(in reply to hot_peng)
       Post #: 63

RE: Long-EZ 46 Conversion to Electric - 5/19/2008 5:32:20 AM   
G_eronimo


 

Posts: 14
Joined: 5/5/2007
From: North Las Vegas, NV, USA
Status: offline
quote:

ORIGINAL: hot_peng
...
One day some wise man will come up with the way to set up the carnard to fly slow.
...


The "wise man", who invented the original Vary Eze, Burt Rutan, already came up with a "slow" canard (but it is a little different to a pure canard):

http://www.airventuremuseum.org/collection/aircraft/Rutan%20Grizzly%2072.asp

But there might be many more ways to do it.

Uli

(in reply to hot_peng)
       Post #: 64