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het f20 tigershark - 8/28/2008 11:27:05 AM   
mark660


 

Posts: 20
Joined: 7/24/2007
From: perthperth, AUSTRALIA
Status: offline 		hi guys.
Im just wandering if anyone had any advice or tips before i start building my new plane?.i also want to know if a hs65mg is ok for the elevator im pretty sure it will be but best to ask.
thanks
       Post #: 1

RE: het f20 tigershark - 8/29/2008 4:31:15 PM   
CTulanko



Posts: 343
Joined: 2/17/2004
From: Cincinnati, OH, USA
Status: offline 		Mark,

Congrats on you purchase...you will be very pleased with the HET-RC F-20 as it is a very good model. As far as servo selection for the Elevator is concerned, I would recommend using the HS-81MG or HS-85MG as they are much stronger than the HS-65, which may work ok but not hold up as well. You have to realize that the Elevator is at the bottom of the model and will take some stresses during launch and more particularlly, during the landing as it drags through the grass. A stronger servo will help take the hit during these times.

As far as tips are concerned, I would recommend you reinforce the Elevator servo with either wood blocks on the sides or with some clear silicon sealer to buffer side motion during operation so the servo tape does not loosen. Also, you should add some balsa planks in the front of the model in the battery compartment, as the walls and floor are rather thin balsa and they are a weak point. Finally, some people bolt on the Horizontal Stab, but this requires some work, installing hardwood plates where the bolt holes reside, otherwise the bolts will pinch the balsa and pull loose. You should also add hardwood stiffeners to the sides and rear to keep the stab from flexing around the bolts if you decide to bolt it to the fuselage. They bolt it on so they have access to the rear compartment, however, I would really recommend gluing the stab with epoxy as this is the safest way to mount it. Finally, if you are using a 72mhz receiver, I recommend you run the antenna out the rear of the fuselage and let it follow the model. I tried several positions inside the model and could not find a good spot without receiving interference from the system.

I do recommend the use of a U-BEC for the reciever and servos, as it adds that extra bit of safety if you have a probem with the ESC and removes the extra work the ESC would need to do if it had to supply BEC power. I suggest you take a look at the photo build construction article for the model to get familiar with the steps required during assembly. You can view it at www.warbirds-rc.com in their Research Center section under Build Articles. Good luck and let us know if you have any other questions.

Carl

(in reply to mark660)
       Post #: 2

RE: het f20 tigershark - 8/29/2008 5:57:52 PM   
TerryTill


 

Posts: 47
Joined: 7/11/2003
From: alexandria, VA, USA
Status: offline
quote:

ORIGINAL: CTulanko

Mark,

Finally, if you are using a 72mhz receiver, I recommend you run the antenna out the rear of the fuselage and let it follow the model. I tried several positions inside the model and could not find a good spot without receiving interference from the system.

Carl


Carl,
With your 72mHz receiver, did you leave it in the back and have the antenna trail aft, or did you move the rx somewhere else. I've been sitting on mine and the one thing I haven't figured out is whether to run extensions to put the rx in the cockpit area, or ahead of the fan.

Thanks,

< Message edited by TerryTill -- 8/29/2008 5:58:33 PM >

(in reply to CTulanko)
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RE: het f20 tigershark - 8/29/2008 10:12:18 PM   
CTulanko



Posts: 343
Joined: 2/17/2004
From: Cincinnati, OH, USA
Status: offline 		I left the receiver in the back and let the antenna run out the rear with no problems.

(in reply to TerryTill)
       Post #: 4

RE: het f20 tigershark - 8/30/2008 12:26:16 PM   
TerryTill


 

Posts: 47
Joined: 7/11/2003
From: alexandria, VA, USA
Status: offline
quote:

ORIGINAL: CTulanko

I left the receiver in the back and let the antenna run out the rear with no problems.

Thanks Carl!

(in reply to CTulanko)
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RE: het f20 tigershark - 8/30/2008 4:49:03 PM   
mark660


 

Posts: 20
Joined: 7/24/2007
From: perthperth, AUSTRALIA
Status: offline 		thanks CTulanko thats just the info im looking for. im also seeing that some people are shaping there inlet ducts do u have to do this ?or can i fly it as it is. what is the benefit of shaping them?one more thing what kind of bunggy setup should i be using for thise iv heard of a few not having strong enough buggys for this plane i dont want this to happen to me.

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       Post #: 6

RE: het f20 tigershark - 9/1/2008 1:53:32 PM   
CTulanko



Posts: 343
Joined: 2/17/2004
From: Cincinnati, OH, USA
Status: offline 		Mark,

Shaping the intakes will get you a few more mph, but you don't need to do it. My prototype is still stock and flies fine with the standard stock intakes.

(in reply to mark660)
       Post #: 7

RE: het f20 tigershark - 9/8/2008 8:54:01 PM   
Socomon


 

Posts: 2
Joined: 2/26/2007
From: Riva, MD, USA
Status: offline 		A 9314MG servo from Hobby City would work well for the levator as well. I have a 9320MG in mine and it is just a tad too big, but has tons of torque.

(in reply to CTulanko)
       Post #: 8

RE: het f20 tigershark - 9/9/2008 5:58:33 PM   
Glacier Girl



Posts: 7003
Joined: 7/9/2004
From: SomewhereIn, PA, USA
Status: offline 		Mark, Carl is the man on the HET birds, but if it's any help to you I did a build on mine here.

http://www.wattflyer.com/forums/showthread.php?t=2919&highlight=het+20

I pushed the envelope on mine, putting over 1000 watts in it. One of my buds managed to turn it into a large crater this weekend when it got away from him.

I've already got another on the way, I really liked it. Heck it impressed me enough that I also have the Me262 from them sitting here, on the build schedule.

_____________________________

"The Missing Man Formation"
Looking heavenward you cannot help but shed a tear...mornful...lonesome...a hole that screams out almost as loudly as the roar of the engines that pass over head.

(in reply to Socomon)
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RE: het f20 tigershark - 9/14/2008 5:33:36 AM   
mark660


 

Posts: 20
Joined: 7/24/2007
From: perthperth, AUSTRALIA
Status: offline 		well guys im almost finished just got the battery tray to make and a way to hold the canopy on then some paint. im still not sure how much pull i will need on the buggy im going to make iv never bungy lanched before any advice??or tips for building one thanks.

< Message edited by mark660 -- 9/14/2008 12:10:49 PM >

(in reply to Glacier Girl)
       Post #: 10

RE: het f20 tigershark - 9/22/2008 9:22:14 PM   
CastorTroy2150


 

Posts: 157
Joined: 6/8/2008
From: Mansfield, OH, USA
Status: offline 		Hey guys, was told that the HET- F-20 would be a good EDF to start on. Am looking at building one, anyone who has flown one have a suggestion as to what to power this with?I am not looking to have a super rocket plane, I jsut want one with some extra nads in case I need it to abort a landing ect. First off is this a ok plane to learn EDF on? I have been flying for a long time and have tons of flight experience on all types of planes. I would really like to paint this if I get one but dont like the idea of painting over ultracoat. I know it can be done but I have never tired it before. I have a picture of what I want in terms of paint scheme. I need the lighted way to seal the balsa otherwise. Any suggestions? Should I add gear of belly land this plane, looks as if it would be a great candidate for retracts with the added weight I am unsure of flight characteristics . On another important note, how fast do these things land... I know they dont have a lot of wing area, what is stall speed like on it? heres what I am thinking..

*Tiger paint scheme(see Pic)
*Retracts
*A6000 Spectrum RX
*Spektrum HT MG miniservos
*Detailed cockpit

Any suggestions would be great, even if this isnt a good Starter plane for EDF, I still want to get it, I will get whatever someone suggested to learn on, And make this one of my winter builds.Thanks guys


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       Post #: 11

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