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RE: BOOMERANG ELAN - New Build & Setup Thread! - 7/12/2012 12:37 AM   
Xairflyer



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Status: offline 		Funny you mention something in the paint below are a couple of pics of a dead elan fuselage that I just noticed recently has developed a rash!

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 7/12/2012 12:45 AM   
Lil Hoss



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Status: online 		What is that????????
That rash you are referring too.
I hope thats not the next thing to expect..........

Hoss

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 7/12/2012 12:14 PM   
Xairflyer



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Status: offline 		No idea what it is but it is all over the fuselage and the booms, was ok when new and when he was flying it, but has been noticed recently while stored in my garage after it was crashed.
They are hard bubbles/lumps not like air pockets under paint, would have to do with the fibreglass resin I would think.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/1/2012 7:24 AM   
Dieselman1220



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Status: offline 		So I've been looking for an airframe to stick an old AMT Pegasus in and I think the elan may be a winner!
I know the Peggy is a little heavy but it seems like most folks are adding tail weight to get the proper CG anyway. 28 lbs of thrust
On a more or less 25lb airframe seems like fun....thoughts?

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/1/2012 9:43 AM   
Frank Sopwith



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Status: offline 		Fly mine with a AMT Mercury which give a lot of fun already,
curious at how the outcome will be when you fly it with a Pegasus!

let us know!
cheers,

Frank

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/1/2012 10:33 AM   
BaldEagel



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Status: offline 		I had a JetCat 120SE in mine, but did not have to add tail weight, just had the ECU battery (three cell A123) between the wheel wells and the two RX A123's under the tank, no UAT, from that I would think you may be able to use the AMT without any weight added, just move everything forward. I don't know the difference in weight between the JetCat and AMT though so I am just guessing, but thought the information may help.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/1/2012 11:08 PM   
Dieselman1220



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Status: offline 		Def helps Mike, from what I can gather the Pegasus is roughly 24 oz heavier than a p120 sx. I will run a UAT and will just mount the equipment further forward, maybe use dual NIMHs instead of a123s etc. From what I have read on the elan it can handle the extra weight and thrust with no problems. I've got a few 8411s and 5625s laying around and access to some Robart gear off a boomerang xl so
The only real investment is the airframe. Sounds like I can make it work.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 8:37 PM   
gooseF22


 

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quote:

ORIGINAL: Dieselman1220

Def helps Mike, from what I can gather the Pegasus is roughly 24 oz heavier than a p120 sx. I will run a UAT and will just mount the equipment further forward, maybe use dual NIMHs instead of a123s etc. From what I have read on the elan it can handle the extra weight and thrust with no problems. I've got a few 8411s and 5625s laying around and access to some Robart gear off a boomerang xl so
The only real investment is the airframe. Sounds like I can make it work.


If you have 24 oz at the motor location, you will be about 8 inches average behind CG( right behind the tank).. Put your Fuel tank slightly forward, Air Trap in the hole or forward, fuel pump on the side forward, .. the radio tray is about 24 inches in front of the CG, so the equivalent weight is 1/3, or 8 ounces at the radio tray to offset... with 2 A123's in the nose, I would bet you would be close..

Put it together, put the landing gear and servos in it, and lay out the tray last.. set it up where it will just barely sit on the tail with the UAT full... then finish the tray/batteries.. this way if you have to add weight, you can switch to nickle or just add a few ounces of lead.. I dont think it will be as bad as you think.. I fly with 30lb thrust (dialed down wren 160).. its alot of fun that way.. I dont open it up in a dive though ..just taking it easy, but the vertical is huge!!.. It will take off heavy and climb out vertically with smoke... its an impressive site..

Another alternative is to get the big boomer if you havent already bought it...

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 10:34 PM   
BaldEagel



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Status: offline 		The nice thing about the Boomer is the turbine is only about 300mm behind the C of G, the length of the nose is about 2.5 x that, so you only have to compensate for about 10onz that can easily be accommodated in all that area in front of the tank, a UAT full of fuel will weight that by itself, with the Rx batteries and wiring loom all going to the front you will easily get the C of G in the correct place, don't get the Torus, the tip tanks are on back to front He He.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 11:03 PM   
Dieselman1220



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Status: offline 		Thanks for the tips guys...I haven't bought anything yet, I'm also looking at the pst reaction x just looking for a simple fun and fast sport jet to stick the old pegasus in, I'm leaning towards the elan even though I already have one twin boom jet. (tornado) what other
Jets out there fit this criteria?

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 11:17 PM   
BaldEagel



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Status: offline 		I had a P80 in my Elan and then changed it too a P120SE the difference in top speed was not noticeable, only the vertical changed with any noticeable gain, I think the drag curve on the Elan is such that the power needed to gain any appreciable change in top speed is out of proportion.

If your criteria is fast, look no further than the CARF Rookie, don't take any notice of the nay sayers about bouncing on landing, they only bounce if you land too fast, with the P120SE in its well over 200MPH straight and level and with pitch and yaw vectored thrust a lot of fun, especially the 2M take off's and way too nose high landings.

If you criteria is simple have a look at the Mick Charles Super Reaper, delta wing with canards, can have a fixed UC if wanted, I just put wheels on the bottom of mine and tip skids its also the cheapest turbine platform available, Oh yes its a kit, you have to build it.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 11:24 PM   
bcovish



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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/2/2012 11:30 PM   
BaldEagel



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Status: offline 		Answer to previous post????????????????? deleted.

Mike

< Message edited by BaldEagel -- 8/3/2012 8:45 AM >

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 12:37 AM   
Xairflyer



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Status: offline 		What a lot of people forget about is there is only 6lb of a difference in the later P80 and the P120, so when you need to carry extra fuel for the bigger turbine the margin over the P80 is really that much.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 8:42 AM   
BaldEagel



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Status: offline 		What some people forget (LOL) is that a few of us have been around a long time and had the first incarnation of the P80 which only delivered about 17.5Lb the P120SE gives about 10Lbs more than that.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 11:05 AM   
Xairflyer



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Status: offline 		Not many fitting the old P80 now in a new Elan Mike, but when you think on it the P120SE was not really worth the extra cost for 6lb more thrust once the P80SE came along, probably why it has been discontinued.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 11:13 AM   
BaldEagel



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Status: offline 		Very true, but when I bought the P80 the 120SE was not available, the JetCat's are so reliable there are a lot of P80's still out there being used, luckily I was able to sell my P80 for a good price once I got the 120SE and as far as I know it is still being used. I got hold of a second hand Merlin 90G to replace it, lighter and more powerful and has proved to be reliable once I got it serviced

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 12:14 PM   
Meesh



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Status: offline 		I recently acquired a very slightly used Elan. I am putting a P80SE in it, dual A123 2600 packs, with the standard JetCat 2500mah Lipo.

It looks like the previous owner may have had batteries alongside the equipment tray. Should they be mounted to the rear in the wheel well area?

The previous owner also had a P80SE in it.

Thanks!
Bob

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 12:32 PM   
BaldEagel



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Status: offline 		Meesh

If the previous owner had the same turbine as you say, then just put your equipment in and see where the C of G is, no need to reinvent the wheel. LOL

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 12:37 PM   
Meesh



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Status: offline 		I guess I'm second guessing myself after reading that everyone is putting the weight towards the rear.

I previously had an Elan and put the A123's under the equipment tray between the air tanks. The fuel pump was in the rear behind the fuel tank along with the Jetcat Lipo. It seemed to fly alright. Sorry I got rid of it that's why I picked this one up.

Bob

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 1:04 PM   
gooseF22


 

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Status: offline 		Bob, It really depends on where the trap ended up(4 oz - 5oz dead weight).. My first one had the trap in the hole behind the radio tray, so the batteries ended up right next to the trap.. on this one, I put the CAT Trap under the main tank, put the ECU behind the tank, the fuel pump under the tank, and that let me put the batteries up in the nose(that was the goal).. 2-A123's plus 1 2600 ion(smoke). In my elans I always put the turbine battery on a tray right behind the main tank.. this lets me run any battery I want to, any weight, any size because its on the CG.. see the old thread(red radio trays).. I will post some pics of the new build at some point, when things slow down..

Dont second guess.. most of the Elans I see out there are a little nose heavy, but they fly ok.. when the CG is right, it flies like a pattern bird tho.. very little coupling, and just very forgiving.. for instance, if you get it slow, instead of dropping the nose, it just gently lowers, and if you bounce it, you can reset it, catch the nose, assume the stance, and set it down... makes short grass fields much easier..takes very little back stick to rotate... about 1/8 or 1/4 stick even with slightly negative deck angle... but when you set it down, it sticks.. welcome back to the family.. I stupidly sold my first one too.. now Im back, and i think I will be keeping one around.. its definitely my go to plane now.. just a pleasure to fly, not to fast, not to slow, easy to land, easy to handle, fits in my little car... kinda sounds like the perfect girl..

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 1:09 PM   
Meesh



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Status: offline 		Goose,

My UAT is in front of the fuel tank just behind the equipment tray.

I'm going to try setting it up like my first one. It flew fine.

Thanks for the help.

Bob



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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/3/2012 9:18 PM   
Justflying1


 

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Status: offline 		 HI Meesh,
I have an Elan with a P80se.
Trap at front of fuel tank. Twin A123 batteries behind fuel tank with lipo for ECU.
Fuel pump, and ECU under tank.
 
Ivan


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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/6/2012 7:01 PM   
Meesh



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Status: offline 		Thank You Ivan!

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 8/6/2012 8:31 PM   
proline8000



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Status: offline 		Bob, when I built Eric's elan (the one you have) i had the ECU battery under the tank and 2 lipo 2300 ma up front. This worked well as there was very little down elevator needed for inverted flight.If you are going to use A123's you will need to move them aft. If you need any questions answered just call me and I will walk you thru the ballancing.

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