The all new Explorer 3.8 meter F5J - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
May 07, 2017, 05:01 PM
MSgt, USAF Ret.
Jim Frahm's Avatar
Build Log

The all new Explorer 3.8 meter F5J


This thread is for the build log and discussion of the all new Explorer 3.8 meter F5J plane from NAN Models. PLEASE,,,,,,,, help me keep this thread ON TOPIC!

For those that must know, here are the empty parts weight:

Fuse = 132.6 g
H stab = 34.3 g
V stab = 26.8 g
R tip = 147.4 g
L tip = 148.1 g
Center panel = 288.6 g

Total = 777.8 g or 27.43 oz

I had to add that up a couple of times just to make sure I didn't leave anything out. WOW

I plan on using all 6110/6100 MKS HV servos, Castle Edge Lite 50 amp ESC, Ultra guard battery backup system, aluminum motor mount, GM 14X7 prop, and a motor. Which motor is YTBD.

Stay tuned!

Jim
Sign up now
to remove ads between posts
May 07, 2017, 05:25 PM
Registered User
Quote:
Originally Posted by Jim Frahm
I had to add that up a couple of times just to make sure I didn't leave anything out. WOW

Jim
Hi,

Joiners?

Br,

Jyrki
May 07, 2017, 05:40 PM
MSgt, USAF Ret.
Jim Frahm's Avatar
I forgot the joiners.

22 grams for the pair.
May 07, 2017, 06:24 PM
Registered User
Is that the x1 airfoil
May 07, 2017, 07:28 PM
MSgt, USAF Ret.
Jim Frahm's Avatar
Quote:
Originally Posted by ustowman1
Is that the x1 airfoil
I believe so. I'll compare it to an X 2.5 wing later today.
May 07, 2017, 07:44 PM
Registered User
Randy Reynolds's Avatar
Jim, it's very confusing to try and understand what a "new" Xplorer/Explorer is. Your picture showing all the parts intermingled with an Aloha is perhaps emblematic of the confusion caused by trying to sort out the various generations and sizes of these ships. Is there a family tree one can refer to?

Randy
May 07, 2017, 08:24 PM
MSgt, USAF Ret.
Jim Frahm's Avatar
The joiner and alignment pins on the old tips do not match the new center panel and the new center panel appears thinner than the old center panel.

Jim
May 07, 2017, 08:25 PM
MSgt, USAF Ret.
Jim Frahm's Avatar
Quote:
Originally Posted by Randy Reynolds
Is there a family tree one can refer to?

Randy

That's a NAN question. I lost track after the 2016 version of 2.5.

Jim
May 07, 2017, 08:40 PM
Registered User
Randy Reynolds's Avatar
Ok, an answer would probably take you far off topic anyway.
May 08, 2017, 02:08 AM
1 revolution and throw!
Quote:
Originally Posted by Jim Frahm
I'm still waiting on the wing servo frames to come in so I'll start with the fuse servos and tray.
You leave no room for ballast?
May 08, 2017, 04:10 AM
Registered User
Tuomo's Avatar
Quote:
Originally Posted by krikkens
You leave no room for ballast?
Auch :-( This plane moves well compared to the ultra light wing loading, but having possibility for a small ballast greatly increases its flexibility. I would say a possibility to ballast is a must! I use about 250g to cope 5m/s wind. After that conventional F3J based Xplorer is fine. A heavy ballast is not very practical in Explorer because of light low power motor setup and weak wing structure.
May 08, 2017, 04:14 AM
Registered User
Tuomo's Avatar
Quote:
Originally Posted by Randy Reynolds
Jim, it's very confusing to try and understand what a "new" Xplorer/Explorer is. Your picture showing all the parts intermingled with an Aloha is perhaps emblematic of the confusion caused by trying to sort out the various generations and sizes of these ships. Is there a family tree one can refer to?

Randy
Xplorer refers to the planes that have F3B based airfoil (X2 airfoil, X3 is same airfoil with round tips). Explorer is a new airfoil specially designed for F5J. Explorer works fine with low wing loadings, Xplorers noid a little higher AUW to fly well.

Fuselage and tail is the same. Explorer comes with much lighter fuse structure.

Having flown virtually all Xplorers since F3J X1, I would say Explorer is one of the most significant milestones in the evolution
May 08, 2017, 05:43 AM
1 revolution and throw!
Quote:
Originally Posted by Tuomo
Auch :-( This plane moves well compared to the ultra light wing loading, but having possibility for a small ballast greatly increases its flexibility. I would say a possibility to ballast is a must! I use about 250g to cope 5m/s wind. After that conventional F3J based Xplorer is fine. A heavy ballast is not very practical in Explorer because of light low power motor setup and weak wing structure.
that's indeed what i meant .... light planes shouldn't be ballasted up heavely to cope with high winds , indeed the propulsion one chooses to get it lightweight isn't sufficient as is the structure on such light planes.
But adding some ballast when thermals are strong and moderate winds takes them far away is needed in my opinion aswell .
otherwise it's a plane good for dead conditions and with a handicap for a little more active conditions...
May 08, 2017, 05:44 AM
1 revolution and throw!
Quote:
Originally Posted by Jim Frahm
This thread is for the build log and discussion of the all new Explorer 3.8 meter F5J plane from NAN Models. PLEASE,,,,,,,, help me keep this thread ON TOPIC!

Jim
sorry


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Explorer - new F5J model at NAN (with an 'E') gdouglas Electric Competition Soaring-F5J/ALES/e-Soaring 44 May 23, 2017 09:42 PM
Discussion Kappa 2 meter 400 class f5j FASTBEN Electric Competition Soaring-F5J/ALES/e-Soaring 84 Apr 17, 2017 12:11 PM
Discussion 3,8 meter flying wing SpeedsterDEN Foamies (Scratchbuilt) 4 Sep 24, 2016 04:06 AM
New Product Xplorer ii f5j (3.8) gary1201 Multi Task F3X 0 Jul 17, 2013 06:05 PM
Help! explorer 3.8 elevator servo locked VirTus Sailplane Talk 28 Nov 17, 2010 12:59 PM