SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Apr 30, 2013, 07:03 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
Build Log
F/A -18 XXL Hornet Pusher Jet

Since I have seen so many big pusher jets fly well I'll try to build a XXL Hornet based on JETSET's plan. I'm sure this is gonna take me the whole summer.

Wingspan: 1280mm / 50.4"
Overall length: 1950mm / 76.8"

I do not yet know, which motor setup I will use. I want to have an estimate on the total weight of the parts first. But I'm sure it's a pusher and not EDF.

I will mainly use 9mm Depron Sheets, which I have found around the corner. The bad thing is: One side is covered with white color already. I will have to sand it down to safe weight.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Sign up now
to remove ads between posts
Old May 01, 2013, 07:05 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
My new hobby over lunch. Drawing parts.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 01, 2013, 01:29 PM
Registered User
miltonboy's Avatar
United States, TN, Knoxville
Joined Dec 2007
54 Posts
Looking forward to the progress. This is on my build list too. I have to finish my 80" Me 109 first.

Subscribed
miltonboy is offline Find More Posts by miltonboy
Reply With Quote
Old May 01, 2013, 03:51 PM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
I will try to keep the plane as light as possible. No rudder, no retracts are planned. I will protect the bottom surface of the fuselage with 49g Glas and WBPU from damage. Most of the parts of the fuselage should be built in single 9 mm Depron. The wing must be removable to fit in my car and I want to start the plane out of my hand. I do also not have a plan to build an airfoiled wing. Maybe I'll do a KF2 wing. I have done this with my other birds as well. I believe this action plan will not lead in excessive work.

Well, this is the plan but I often change my plans during the built. Let's see how it ends.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Last edited by Wobisch; May 01, 2013 at 04:00 PM. Reason: additional text
Reply With Quote
Old May 02, 2013, 07:15 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
All parts exept the fuselage doublers are cutted. Tomorrow I try to puzzle it together with pins and tape
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 02, 2013, 07:19 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
I'm thinking about this motor:

Model: NTM 4258-500
Kv: 500kv
Turns: 6T
Poles: 7
Resistance: 0.144 Ω
No Load current: 1.6A @ 10v
Max current: 60A
Max Power: 1300W
Shaft: 5mm
Weight: 319g
Bolt holes: 25mm
Bolt thread: M3
ESC: 70A
Cell count: 5~7 Lipoly


Prop Test Data:

15x8 - 22.2v - 1256W - 56.6A
16x10 - 22.2V - 1885W - 84.9A

Using a 6S 4000 mAh Lipo which I already have. Depending on the total weight.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 03, 2013, 05:59 AM
Registered User
Joined Apr 2013
93 Posts
cool project! 9mm depron sounds nice too. Havent seen that anywhere in Norway.
HerskerHans is offline Find More Posts by HerskerHans
Reply With Quote
Old May 03, 2013, 06:40 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
My target for today was to fix all parts together with tape. It seems that everything fits fine. Now I will make some studies regarding airfoil, KF2 or doing nothing. The e-flight 46 brushless which I originally bought for my Hangar-9 Toledo Special fits just right.

Total weight of my Depron parts (which are painted on one side with white colour) is 1.1kg.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Last edited by Wobisch; Jul 01, 2013 at 03:07 AM.
Reply With Quote
Old May 03, 2013, 10:27 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
Quote:
Originally Posted by HerskerHans View Post
cool project! 9mm depron sounds nice too. Havent seen that anywhere in Norway.
I found it in Germany via internet but it is produced in Switzerland!!
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 17, 2013, 02:00 PM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
Between painting my F5 and F15 I'm thinking about profiling the wing. Not sure I should stay with the KF2. Made some good experience with that but it does not look good in that big size. Have to generate some new ideas.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 18, 2013, 08:37 AM
KK4NZS
Nelapaty's Avatar
Virginia
Joined Sep 2006
1,485 Posts
I guess you could profile the wing, Heres what Pajlotmato's build thread looks like.. I have one sitting on the shelf about 20% built .

http://www.rcgroups.com/forums/showt...=775035&page=2

and dont forget this one probably the first large f18..
http://www.rcgroups.com/forums/showthread.php?t=425524
Nelapaty is offline Find More Posts by Nelapaty
Last edited by Nelapaty; May 18, 2013 at 12:14 PM.
Reply With Quote
Old May 18, 2013, 11:16 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
Cool. I'm not alone. Post your progress here.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Old May 18, 2013, 01:54 PM
This is BAT country!
Gonzo 1971's Avatar
United States, MI, Ovid
Joined Nov 2003
630 Posts
That is awesome! I have been toying with building one around my Omega 130g. Maybe 50 inch span. Looks like fun!
Gonzo 1971 is online now Find More Posts by Gonzo 1971
Reply With Quote
Old May 19, 2013, 12:52 AM
Park Jet Guru
jetset44's Avatar
Seattle, WA
Joined Jun 2002
5,614 Posts
Looking great, Wob! If you keep it light you do not need to profile the wing, it will fly just fine. But at the larger scales the flat wing doesn't look as scale. So you could profile it just to add some thinkness and make it more scale. More thickness would certainly help strengthen it, too. Just remember the real F/A-18 has a really thin wing, so don't add too much thickness.

Steve
jetset44 is offline Find More Posts by jetset44
Reply With Quote
Old May 19, 2013, 03:35 AM
fortuna favet fortibus
Wobisch's Avatar
Schweiz, AG, Merenschwand
Joined Oct 2011
896 Posts
Same procedure as usual but bigger parts.
Weather is lousy as well, but who cares about weather with that project in mind.
Wobisch is offline Find More Posts by Wobisch
RCG Plus Member
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log My F-18 HORNET XXL Blue Angels PARKJET pajlotmato Pusher Prop Jet Models 174 Jun 10, 2014 03:46 AM
Question Hobbyking Freeflight F-18 Hornet w/Catapult Launcher 360mm Span richos Scratchbuilt Indoor and Micro Models 7 Apr 27, 2013 09:18 AM
For Sale NIB HET F-18 Hornet EDF ARF richardc951 Aircraft - Electric - Jets (FS/W) 0 Apr 22, 2013 10:07 PM
Discussion Exceed F-18 Hornet retracts beajer Electric Plane Talk 0 Apr 02, 2013 06:42 PM
Sold F-18 hornet airframe with servos. 18.5" wingspan jmscard Aircraft - Electric - Jets (FS/W) 5 Mar 05, 2013 05:01 PM