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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/16/2011 7:40 PM   
dalk


 

Posts: 15
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Joined: 4/3/2005
Last Login: 1/27/2012
From: east london, SOUTH AFRICA
Status: offline 		Lost my boomerang topdeck in flight yesterday . deck popped off after 3min flying and wrapped itself around my leftwing leading edge .
I was on a downwind leg and managed to gain "control" just before impact and had another hair raising moment whilst turning onto baseleg .
I manage to gain enough height to clear a 8ft fence on finals and landed the puppy whilst still dragging the topdeck around much to the crowds delight including myself !

I have a video clip that I'm gonna try to post on u tube.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/16/2011 9:44 PM   
Lil Hoss



Posts: 507
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Last Login: 6/20/2013
From: Racine, WI, USA
Status: offline 		Hi Dalk
Good job landing your Elan.......
Stupid question, But how did the canopy come off???
I have many flights on my Elan and I just maidened a new Elan a week ago and I never had a issue like that.
Can you please explain how it might have happened so I may prevent it from happening on my Elan.
Again,,,, Nice job on saving you jet

Hoss

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 4:21 AM   
gooseF22


 

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From: Fort Wayne, IN, USA
Status: offline 		Its funny watching folks relearn the same ol lessons over and over... All the challenges folks are having in the build of this jet were documented in the LONG thread from before.. including the tank mount mods, and placement of the gear. I had to grind the crap out of mine. anyway, its a great jet and I miss mine...good luck. Im flying a kingcat now, so I cannot justify having the elan again.....yet...

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Wren Turbines USA, Fromeco

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 6:30 AM   
dalk


 

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From: east london, SOUTH AFRICA
Status: offline 		http://www.youtube.com/watch?v=7-uvXKybLls





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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 6:41 AM   
dalk


 

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From: east london, SOUTH AFRICA
Status: offline 		u can see the front part of the deck scraping the ground on landing and then straightens out .
The back of the deck sticks out next to the left boom .
my wheel is still missing though (lol) and my underpants !
i don't know if any other model would have made it back . GO BOOMERANG !!
on closer inspection of the deck fastener section it seems that only a small bead of epoxy was holding the plywood in place .
hope to find a deck soon and will certainly glass that section in GOOD.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 12:53 PM   
Xairflyer



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From: Co. Donegal, IRELAND
Status: offline 		You were lucky as well that the turbine did'nt set fire to it which may have then burnt the plane in flight!

Must get the owner to check the one I just built, and probably get him to add some extra glue

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 1:08 PM   
Xairflyer



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From: Co. Donegal, IRELAND
Status: offline 		The Elan had a couple of successful test flights on Sunday, the conditions were far from ideal but it flew very well.

I set the CG on the main gear as everyone suggested and we had a couple of millimeters of up elevator trim in it when we landed so we shimmed the tailplane with a few washers for the second flight again as some others have been doing.
Due to the very blustery conditions it was difficult to trim it out properly but a good start made for the next day which will hopefully have better weather.

Came out 21½ lb with the P80 (kero start) and two 4 cell NiMh 5000mah batteries and the JC 2500mah Lipo.







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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 1:16 PM   
Xairflyer



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From: Co. Donegal, IRELAND
Status: offline 		Some additional pictures of during the build below I meant to add.

I drilled the flap horn lower down to give a better deflection, There is a ball link on the servo arm which allows it to go full travel without binding.
Also if you look I have fitted the kit supplied hinges closer to the top of the wing than the factory cut slot.
You have about 3mm gap between the flap and TE of wing when flap is up, but this setup gives me the near 90deg full down.

Colin from Boomerang Jets in the UK very kindly sent me some extra servo covers so I was able to fit a left and right elevator servo which I think is better. I then used a JR multibox to setup the elevators without having to use an extra channel.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 1:30 PM   
Xairflyer



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From: Co. Donegal, IRELAND
Status: offline 		I used two 5000 4 cell NiMh packs and fitted them on top of the wheel wells with high grip velcro, I found best place for the ECU battery was on the intake floor, I could have mounted it under the tank try but at least at the intake you can get at it if it starts to smoke

On the other side I mounted the vent tank, I always fit these as they are great for preventing fuel from running out the vent pipe when you carry the model and also for preventing any excess fuel from ending up on the ground when filling the fuel tank.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 7:19 PM   
jblloyd



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From: Brandon, MS, USA
Status: offline 		Mystery part - does anyone know where this is suppose to go??


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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/17/2011 7:27 PM   
steve2972


 

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quote:

ORIGINAL: jblloyd

Mystery part - does anyone know where this is suppose to go??



Goosef22-don`t say anything !


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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/22/2012 4:53 PM   
mjunior


 

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From: Sao Jose dos CamposSP, BRAZIL
Status: offline 		Right tail boom misalignment!

Have you guys faced this situation? If yes what did you do? I tried to force (boom and wing panel) but the final assembly seems to be highly loaded.

Regards,

Mucio

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 12:28 AM   
BaldEagel



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Last Login: 6/18/2013
From: Wychling, Kent, UNITED KINGDOM
Status: offline 		Over the life span of the Elan there have been a lot of problems with the boom ailgniment and the ali rods, but this is the worst miss ailgniment I have seen on one, how is the ailgniment without the boom in place? if that is OK it could just be the boom holes that are out, if so you could ream them out and Hysol some ply disc's inside the boom to compensate then make good on the surface, if its the wing tubes then a replacement wing is the only option.

Most have found that the ali rods need to be Hysoled in place to prevent the tail from changing incidence during flight, on the ground this can manifest itself by being able to move the tail up and down by up to three inches.

Hope this helps.
Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 2:42 AM   
mjunior


 

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From: Sao Jose dos CamposSP, BRAZIL
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quote:

ORIGINAL: BaldEagel

Over the life span of the Elan there have been a lot of problems with the boom ailgniment and the ali rods, but this is the worst miss ailgniment I have seen on one, how is the ailgniment without the boom in place? if that is OK it could just be the boom holes that are out, if so you could ream them out and Hysol some ply disc's inside the boom to compensate then make good on the surface, if its the wing tubes then a replacement wing is the only option.

Most have found that the ali rods need to be Hysoled in place to prevent the tail from changing incidence during flight, on the ground this can manifest itself by being able to move the tail up and down by up to three inches.

Hope this helps.
Mike


Mike

Just checked alignment without the boom. Looks very good. I will try to work in the boom tubes position, ream them or even remove and bonding them again in the right position.

Thanks,

Mucio

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 7:17 AM   
steve2972


 

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From: southamwarwickshire, UNITED KINGDOM
Status: offline 		The Elan is a great deisgn/looking Jet,but the quality of the Kit lets it down.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 11:05 AM   
BaldEagel



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quote:

ORIGINAL: jblloyd

Mystery part - does anyone know where this is suppose to go??



If I remember correctly that is a doubler for the rear tank former between the wheel wells.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 2:28 PM   
BaldEagel



Posts: 9365
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From: Wychling, Kent, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: mjunior


quote:

ORIGINAL: BaldEagel

Over the life span of the Elan there have been a lot of problems with the boom ailgniment and the ali rods, but this is the worst miss ailgniment I have seen on one, how is the ailgniment without the boom in place? if that is OK it could just be the boom holes that are out, if so you could ream them out and Hysol some ply disc's inside the boom to compensate then make good on the surface, if its the wing tubes then a replacement wing is the only option.

Most have found that the ali rods need to be Hysoled in place to prevent the tail from changing incidence during flight, on the ground this can manifest itself by being able to move the tail up and down by up to three inches.

Hope this helps.
Mike


Mike

Just checked alignment without the boom. Looks very good. I will try to work in the boom tubes position, ream them or even remove and bonding them again in the right position.

Thanks,

Mucio



Before you move or ream out the main spar hole, check to make sure its not just the ali dowels that are causing the problem, assemble the wing and boom without them and see how the fit looks.

Mike

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 3/23/2012 5:04 PM   
mjunior


 

Posts: 200
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From: Sao Jose dos CamposSP, BRAZIL
Status: offline
quote:

ORIGINAL: BaldEagel

quote:

ORIGINAL: mjunior


quote:

ORIGINAL: BaldEagel

Over the life span of the Elan there have been a lot of problems with the boom ailgniment and the ali rods, but this is the worst miss ailgniment I have seen on one, how is the ailgniment without the boom in place? if that is OK it could just be the boom holes that are out, if so you could ream them out and Hysol some ply disc's inside the boom to compensate then make good on the surface, if its the wing tubes then a replacement wing is the only option.

Most have found that the ali rods need to be Hysoled in place to prevent the tail from changing incidence during flight, on the ground this can manifest itself by being able to move the tail up and down by up to three inches.

Hope this helps.
Mike


Mike

Just checked alignment without the boom. Looks very good. I will try to work in the boom tubes position, ream them or even remove and bonding them again in the right position.

Thanks,

Mucio



Before you move or ream out the main spar hole, check to make sure its not just the ali dowels that are causing the problem, assemble the wing and boom without them and see how the fit looks.

Mike


The trial I did was with the main carbon spar and the aluminum sticks all installed and the assembly was good. Also the main spar hole looks good. I think the problem is in the ali rods and I will not do anything in the main spar hole.

Mucio

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 1:44 PM   
mjunior


 

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From: Sao Jose dos CamposSP, BRAZIL
Status: offline 		I've got a new boom from Boomerang Jets (thanks to Colin) end now everything is ok.

Some pictures.

Mucio

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 2:23 PM   
voodoodb



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From: Flora, MS, USA
Status: offline 		Great News. Good Luck with it.

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 2:43 PM   
mjunior


 

Posts: 200
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Joined: 11/26/2004
Last Login: 6/19/2013
From: Sao Jose dos CamposSP, BRAZIL
Status: offline 		Before to purchase the Elan I was afraid about not being a good decision to upgrade from my Sprint to an Elan (and instead to purchase a expensive scale model)

Now I saw it assembled I'm sure it was a very good decision to choose it.

It is real a nice looking aircraft and the overall construction quality is very good. All of these added to the sport flying characteristics makes me very excited to fly it soon and make it my all life jet model.

Thanks to Alan, Patricia, Colin and Dave

Mucio Viana
Brasil

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 2:48 PM   
Lil Hoss



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From: Racine, WI, USA
Status: offline 		You WILL NOT BE SORRY buying the Elan or any of the Boomerang jets.
They are a pleasure to fly
You made a GOOD choice

GOOD LUCK

Hoss

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 7:20 PM   
kimhey


 

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From: T�nsberg, NORWAY
Status: offline 		I had a Sprint and sold it...could not forgive myself, and bought an Elan a few months later. Boomerang jets are a pleasure to fly, very stress free flying

One thing to consider: I used a P80se in both models,. My Sprint came out tail heavy (easy to move components to achieve correct CG). But my Elan came out very nose heavy, so much that my cockpit compartment is almost empty . Be prepared to mount the batteries far back, some puts the batteries over the wheel wells or even under the turbine (I am not to sure about how smart the latter is...).

In the end, I ended up adding 50gr at the end of each boom.

When hinging the flaps, make sure you get lots of deflection AND check that the flaps don`t bind in up position before gluing the hinges. I had to sand a bit on each flap to get a nice flush fit in the up position.

Full flaps on my Elan is close to 90 degrees deflection (so it is actually more like speed brakes than flaps).



The Elan flies similar to the Sprint, maybe slightly faster at full throttle. Slows down really nice on landings

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 4/4/2012 7:42 PM   
mjunior


 

Posts: 200
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Joined: 11/26/2004
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From: Sao Jose dos CamposSP, BRAZIL
Status: offline
quote:

ORIGINAL: kimhey

I had a Sprint and sold it...could not forgive myself, and bought an Elan a few months later. Boomerang jets are a pleasure to fly, very stress free flying

One thing to consider: I used a P80se in both models,. My Sprint came out tail heavy (easy to move components to achieve correct CG). But my Elan came out very nose heavy, so much that my cockpit compartment is almost empty . Be prepared to mount the batteries far back, some puts the batteries over the wheel wells or even under the turbine (I am not to sure about how smart the latter is...).

In the end, I ended up adding 50gr at the end of each boom.

When hinging the flaps, make sure you get lots of deflection AND check that the flaps don`t bind in up position before gluing the hinges. I had to sand a bit on each flap to get a nice flush fit in the up position.

Full flaps on my Elan is close to 90 degrees deflection (so it is actually more like speed brakes than flaps).



The Elan flies similar to the Sprint, maybe slightly faster at full throttle. Slows down really nice on landings


Thanks for your comments kimhey

This really may be a problem since I will use a Wren 100 turbine. It is lighter than the P80.

Regards

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RE: BOOMERANG ELAN - New Build & Setup Thread! - 5/9/2012 12:51 PM   
mjunior


 

Posts: 200
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Joined: 11/26/2004
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From: Sao Jose dos CamposSP, BRAZIL
Status: offline 		Time to start working in a new jet.....

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< Message edited by mjunior -- 5/22/2012 3:31 AM >

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