RE: Elan Has Arrived!  
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RE: Elan Has Arrived! - 7/10/2008 7:16:46 PM   
Jet Lag


 

Posts: 480
Joined: 2/20/2002
From: WESTERVILLE, OH, USA
Status: offline 		No,you will find the plane flys great and the P-70 is a perfect match.I have about 35 flights on mine now at 22 lbs w/o fuel and a P-70.

(in reply to Meesh)
       Post #: 1301

RE: Elan Has Arrived! - 7/10/2008 7:33:25 PM   
Meesh



Posts: 1820
Joined: 1/31/2003
From: Dracut, MA, USA
Status: offline 		Hi David,

1 Gallon in the US=3.8 liters.

I bought the 135 oz Jet Tech Kevlar tank. I'm running a P-70 so I probably won't fill it. It has two chambers in it, 100oz for fuel, 35 oz for smoke oil. I'm not running smoke now so I'll use the 35 oz side as my "Taxi Tank".


Bob


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If it''s worth doing, it''s worth doing it right.
AMA 779352, JPO 1965, IMAA40337

(in reply to skywarrior)
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RE: Elan Has Arrived! - 7/10/2008 7:35:11 PM   
Meesh



Posts: 1820
Joined: 1/31/2003
From: Dracut, MA, USA
Status: offline 		Thanks Jet Lag. I wanted some reassurance that my weight wasn't excessive.

Bob

_____________________________

If it''s worth doing, it''s worth doing it right.
AMA 779352, JPO 1965, IMAA40337

(in reply to Jet Lag)
       Post #: 1303

RE: Elan Has Arrived! - 7/11/2008 12:19:05 AM   
Big feet



Posts: 695
Joined: 8/7/2005
From: Carrickfergus, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: skywarrior

..... but a gallon of fuel sounds a lot to man like me in UK where fuel seems to cost more than saffron !



LoL, I know the feeling, save up just to fill up, and thats just the planes.

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Please remember, RC is dangerous to your wealth

(in reply to skywarrior)
       Post #: 1304

RE: Elan Has Arrived! - 7/11/2008 9:24:04 AM   
john agnew


 

Posts: 1688
Joined: 1/29/2004
From: glasgowScotland, UNITED KINGDOM
Status: offline 		Finally managed to maiden my Elan yesterday, only one flight before the rain came on again!! It flew beautifully on the Wren Supersport with plenty of vertical performance and an excellent turn of speed at 19.5 lbs dry. I used about 5mm of crow to increase the washout mixed with flap and found that the Elan dived with the recommended down elevator mix. I elected to land without flap and made a perfect nose high touchdown with a 30 feet rollout on grass.

I have reduced the down elevator mix and will try her again today if the rain stays off! Well done Alan another superb flyer.

John

(in reply to Big feet)
       Post #: 1305

RE: Elan Has Arrived! - 7/11/2008 1:22:38 PM   
gooseF22


 

Posts: 637
Joined: 8/12/2006
From: Fort Wayne, IN, USA
Status: offline 		the down elevator of course depends on your CG but we used 4% which ended up being about 1-2 mm tops. mine is a little noseheavy. once you get it, its so transparent and smooth. I use a 2 second servo speed on the flaps, so everything is slow and smooth. when I drop the flaps, I throttle up a bit and its smooth. Took 3 sorties to get it right. its a wren SS too.

the jettech tank is 128 oz, split 90/38. 90oz gives the SS 6 min with about 1/3 tank remaining, so maybe three go arounds without hitting the UAT. dont know for sure, havent pushed it past 7 min yet.

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Goose
Team Fromeco

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RE: Elan Has Arrived! - 7/12/2008 11:21:53 PM   
Big feet



Posts: 695
Joined: 8/7/2005
From: Carrickfergus, UNITED KINGDOM
Status: offline 		Hi Guys,
I had the second and third flight of my Elan today. The first flight was more of a shake down flight with only a couple of rolls, today she was given a bit more, knife edge flight, four point rolls, vertical climb, stall turn, and a few high speed low passes.
She flew them all effortlessly, with two gentle landings on half flap.
I think I will play a little with a knife edge mix and maybe some crow as well for landing, and see what happens.
Third flight I had the nerves almost under control, only one hand was shaking.

Everyone that sees this plane fly admires it, both it's looks, and how smooth it flies. You just gotta love it.

_____________________________

Please remember, RC is dangerous to your wealth

(in reply to gooseF22)
       Post #: 1307

RE: Elan Has Arrived! - 7/13/2008 2:58:41 AM   
CPing



Posts: 9
Joined: 7/16/2005
From: Austin, TX, USA
Status: offline 		Today I had flights 3,4 and 5. All was good until I was looking everything over for flight 6...found both elevator covers melted. I remember someone having the same issue and it was suggested that the front of the turbine mount be shimmed. I did this during initial assembly but guess it's not enough. Setup is a P80 that's well centered thanks to a couple of washers under the front of the mount. Only other thing I can think of is a long taxi down wind and it was a bit windy today. I'll email Patricia and get new ones on the way but need to do something different so I don't melt another pair. Do I need to shim even more?

(in reply to Big feet)
       Post #: 1308

RE: Elan Has Arrived! - 7/13/2008 4:43:41 AM   
gooseF22


 

Posts: 637
Joined: 8/12/2006
From: Fort Wayne, IN, USA
Status: offline
quote:

ORIGINAL: CPing

Today I had flights 3,4 and 5. All was good until I was looking everything over for flight 6...found both elevator covers melted. I remember someone having the same issue and it was suggested that the front of the turbine mount be shimmed. I did this during initial assembly but guess it's not enough. Setup is a P80 that's well centered thanks to a couple of washers under the front of the mount. Only other thing I can think of is a long taxi down wind and it was a bit windy today. I'll email Patricia and get new ones on the way but need to do something different so I don't melt another pair. Do I need to shim even more?


Thats when mine happened too, on the downwind taxi. When the wind blows up the tailpipe, it seems to act up. I am planning on spraying hi heat automotive paint on the servo covers to protect them from flash heat, just havent done it yet.

I think the servos need to be moved outboard a little more out of the line of fire. Or to the top of the stab? some guys coat them with aluminum tape too.

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Goose
Team Fromeco

(in reply to CPing)
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RE: Elan Has Arrived! - 7/13/2008 6:22:41 AM   
highhorse


 

Posts: 590
Joined: 11/16/2006
From: Memphis, TN, USA
Status: offline
quote:

I am planning on spraying hi heat automotive paint on the servo covers to protect them from flash heat, just havent done it yet.


Well, I've been wrong before (maybe once? ) but my understanding of the term "hi-temp" as it applies to automotive uses (used a lot of it in my former engine-building days a million years ago) refers to the abuse the paint can withstand without essentially evaporating or peeling off of, say, an exhaust manifold. My understanding is that the term in this case does NOT imply any insulating properties whatsoever. In other words, if you apply automotive "hi-temp" paint to your servo covers you will still have melted covers. But at least they will still have paint on them!

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RELAX already, it's a freakin' hobby !! :-)

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RE: Elan Has Arrived! - 7/13/2008 11:32:41 AM   
Turbinac


 

Posts: 309
Joined: 4/12/2002
From: London, UNITED KINGDOM
Status: offline 		I am working on this servo mount heat problem.

I have been in touch with the factory, who say the plastic used by the company that makes the servo mounts is the same one they have always used. We have used the same mounts for the last four years in literally thousands of Boomerang kits without a complaint, but now suddenly we see several similar cases. I can't be certain their information is 100% correct.

Though I have not had this problem myself, it's obvious that it is something that must be dealt with.

Our ambient daytime temperature in the UK is probably lower than in those places the reports are coming in from. That may help, but I am also very aware that a tailwind while taxying slow or standing at idle causes the heat to rise under the tail, so I always try to stand the model nose into wind when possible. I am sure the problem arises while the plane is on the ground, not during flight.

It has been suggested that a wooden mount may be the answer. I'm waiting for plywood samples to try them out.

You're right about the hi-temp auto paint. It is designed to stand the heat, not insulate against it.

BVM heatshield paint may be one answer. It is excellent, as we all know, for protecting anything from the heat. Colour paint can be sprayed over it, I think.

There's also a 1mm thick heatproof (like asbestos) sticky backed cloth with an aluminium top surface which is super effective. I'm also checking that out to see if it can be bought in moderate quantities.

Alan


< Message edited by Turbinac -- 7/13/2008 11:47:06 AM >

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Alan Cardash,
Boomerang Jets Ltd./Boomerang Jets USA Llc.

(in reply to highhorse)
       Post #: 1311

RE: Elan Has Arrived! - 7/13/2008 1:35:23 PM   
CPing



Posts: 9
Joined: 7/16/2005
From: Austin, TX, USA
Status: offline 		Alan - Just my opinion but a melted cover seems to be the result of a combination of items rather than a design issue. Like you said, there are MANY Elans flying and only a couple of melted covers. My friends Elan has many more flights than mine and no issue, first day with mine and no issue at all. Only yesterday when the ambient temp was ~100F and long taxi with 10+ mph tail wind did I see this. Next time I'll be setting up camp at the North end of the runway

Guess I worded my post poorly, I just wanted to confirm the shim thickness that others have done. Here's my plan:
- Add another shim to the front of the turbine mount
- BVM Heat Shield on the covers then foil tape

(in reply to Turbinac)
       Post #: 1312

RE: Elan Has Arrived! - 7/14/2008 10:10:13 AM   
skywarrior



Posts: 95
Joined: 3/8/2002
From: TWICKENHAM, , UNITED KINGDOM
Status: offline 		Hi Alan,
Hows about in future batches moving the servo points away from the center. Obviously this is not possible on current production run but maybe a thought for the future.

Regards

David

(in reply to Turbinac)
       Post #: 1313

RE: Elan Has Arrived! - 7/14/2008 10:47:36 AM