racer8297

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Question for you guys that built Extreme Jets Dragons. I am assembling one, recent production, and I milled a slot in the rudder for the control horn. It is near the bottom of the rudder as I see them in all the pictures of Dragons on RCU. The problem is that there is no wood inside the rudder at that point. I don't believe that it is a good idea to glue the horn into a hollow area of the rudder.

Has anyone else encountered such a problem? If so, what did you do?

Thanks,
Jim

Edgar Perez

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A friend of mine lost one when the rudder horn severed from the rudder during a climbing knife edge, so I think your concern is warranted.

Ruizmilton

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Jim:

I also saw the incident Edgar mentioned above, I would suggest that you make an opening on the bottom of the rudder near the leading edge and insert and glue with Hysol a block of hardwood shaped to fit the inside of the rudder flush with the outer skin and flush with the bottom of the rudder, and wide/long enough to have enough meat for the horn to grab to, also use a carbon or G-10 horn, not a FRP horn which is what our friend had when his failed, I have encountered that same problem as you with models in the past, this solution has worked perfectly

jetsflying

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this is what you need......67 flights and more to come

racer8297

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Thanks guys.

Ruizmilton, what is FRP? Is that what came with the Dragon kit? If so, are you saying that the horns that came with it are inadequate?

Jetsflying, I assume that you have a block of wood in the bottom of the rudder otherwise your setup would crush the rudder when you tighten it, right?

Jim

Meesh

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Jim

That's a far cry from the Reaction 54!

Can't wait to see it when we come down in October

Take care

Bob (Meesh)

racer8297

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Hey Bob,

How are the boys from Boston doing? Fly yet this year?

I don't know if the Dragon will be ready in October. Need business to get better before I secure a motor for it.

Say hi to Brian and Dom for me.

Don't forget, 4 days this year!

Jim

Meesh

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Hey Jim,

I flew twice last weekend but not jets yet.

We should all be coming down. I plan on being there at least by noon on Thursday.

Looking forward to seeing the "Crew"

See you soon! Good luck with the Dragon!

Bob

P38J

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FRP (Fiber Reinforced Plastic )

racer8297

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Thank you Wayne.

Meesh, you and the boys should consider making it down for a "warmup" during the summer. I got 5 R54 flights last Saturday. Albert got a bunch of flights on his new Eurosport. The field is in top notch shape, even though the winter was pretty harsh.

Jim

Ruizmilton

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Jim;

I'm not sure what horns were provided with the kit, but our friend's rudder horn was FRP, could you post a pic of yours?

Thanks

racer8297

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Ruizmilton,

I think I have the FRP horns. Dreamworks has the exact horn by Airpower. Here is the link:
http://dreamworksrc.com/catalog/prod...oducts_id=1019

These horns should work if I install them properly. I already put in a piece of maple with hysoled it into the bottom of the rudder. I pre-milled the maple so I glued the horn in at the same time. It is downstairs drying as we speak!

Jim

Ruizmilton

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Jim:

Yep, that's what our friend had, his broke at the base, if you glued it already, well, you should be OK as long as you do manouvers that are not too aggresive on the rudder, yet, if you like to fly a lot of knife edge, I recommend that do not fly until you replace those with the airpower carbon fiber horns, dreamworks has them, I believe they are $9.00 for a set of four. Based on our friend's Dragon incident, those FRP horns are not strong enough to withstand the force needed to keep the Dragon on knife edge...

Meesh

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Jim,

That sounds real inviting. I'll talk to the guys and see what they say.

It is quiet a ride for a couple of days,

Bob

jetsflying

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yes but the wood was there...........

racer8297

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Hey Meesh, it's only a 5 hour drive! But it is worth it to party with us at Farview!

Jetsflying, so much for manufacturing consistancy. When I cut the bottom of the rudder open last night there was no wood for at least an inch and a half. I sure hope some poor guy doesn't try to glue a horn in just to the fiberglass! No wood plus terrible instructions is a recipe for disaster!

Jim

jetsflying

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yes it is....but i can tell you once you do themods and fly this bird its unreal how awsome it flies...specialy with a rhino

Osnabruecker

Hi everyone!

I recieved my brand new Dragon last week. Awesome quality. A very good ARF-Kit.

My question: I am missing the servo holes for the elevator and rudder servos. Is this normal or simply forgotten by factory??

Greetings from Germany!

Dirk

racer8297

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Dirk,

My Dragon had a small hole cut in the bottom of the rudder. I had to enlarge it to get the servo into the rudder. The servo mounting plate is at an angle so I would enlarge the hole a little at a time until you know where to make the main cuts. It will become apparant as you go. I didn't get to my elevators yet but I am sure that it is the same type of deal.

Jim

Osnabruecker

Hi Jim!

Yes, you´re right! The manual is not very good... (old version)

I will enlarge the holes too.

Same procedure with the Elevator...

Thanks!

By the way: Is the CG really right on the main spar?


Greetings

Dirk

racer8297

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Dirk,

I have no idea about the CG. I am not even close to finishing the Dragon. There are some other threads here on RCU that mention it. I think that Anton actually posted a picture showing the control throws and CG.

Keep us posted on you build.

Best,
Jim

jetsflying

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yes it is...

as722

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Can anyone post pictures of the dragon's inside. Where is everyone mounting the batteries to balance with a p160, rhino etc. ?


Thanks
Albert

jetsflying

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you need alot of weight up front so get hevy bat.......im using 2 3600 mha nicads

as722

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Thanks for the pictures, I should have my dragon next week.


Thanks
Albert