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Feb 02, 2007, 06:41 AM
AZ Outback
Robert Burson's Avatar
Thread OP

X5J eXtreme Feb. 17th&18th Signup

X5J eXtreme 2007 and Event dates.

Welcome, back for the fourth year.

Please read all rules, new is the order of the rules from 2006, added is the small out runner class of motors, and movement of brushed car motors to the cobalt class of motors..

X5J eXtreme Rules:

1. Any electric powered sailplane can enter this contest.

2. There will be three 10minute flights. One point per second of flight time is scored and, one point deducted for each second over the 10minute-flight time. Maximum points possible 600. Round to the closest second for your flight time.

Example 9minutes 50seconds = 540pts + 50pts = 590pts
10minutes 4seconds = 600pts 4pts = 596pts

3. Motor run time is unlimited but subtracted from the flight time.

Example, 600 flight pts - 19 motor run pts = 581 total round pts.

4. Landing points to be measured from the center of the landing circle, to the closest part of the plane. For each meter from the point subtract 3 points from 30pts . See attached file for table.

5. Motor handicap: brushless 95%, brushed Cobalt and brushed car motors 75%, Ferrite 45%, and outrunners with a 28mm or less bell diameter and 17mm length 68%, Speed400 30%. Actual motor run rounded to the closest second. Then multiplied by the motor percentage. Round this calculated value to the closest 1/10th of a second.

Example Cobalt motor time 34 .6seconds = 35seconds X 0.75 = 26.25seconds = 26.3 seconds

6. You may restart your, motor as many times, as needed, but on the second motor start, you may not add landing points. A second way of stating this rule. If you start your motor after launch run of the motor, you will not receive any landing points.

7. Your flight is limited, a single dawn to dusk flight day of your choosing, during a 48 hour period.

8. Any type of battery cell is legal.

9. Temperature Factor to be added to total flight score. See the attachment for the temperature table.

Timers still need two stopwatches, this was easier then I thought it would be. Work out a signal with the pilot, if he is going to restart the motor. (I.e. "")

This is the simplest way of scoring I have been able to come up with.

Flight time - closest second
Motor run - closest second
Calculated motor run - closest 1/10th of a second
Landing points - see table Rule #3

To compete: Please list your plane, gearbox, prop, cells and type, weight, and any other interesting facts, pictures are always welcome, to this thread.If someone else, not on the Web would like to fly with you please list him or her, by 16th of Feb.

To all who enter,

The Best


Location: Elkhart,IN,USA
Posts: 544 Please add these dates to your calander.

The following are the dates for X5J eXtreme 2007:

Feb. 17th and 18th
March 10th and 11th
April 14th and 15th
May 5th and 6th
June 16th and 17th
July 14th and 15th
August 25th and 26th

September 7th, 8th and 9th Muncie, Indiana, USA
Second X5J World Competition 2007, events at the National field.
X5J Speed400, X5J eXtreme, and X5J Unlimited

October 13th and 14th
Last edited by Robert Burson; Feb 17, 2007 at 11:23 AM.
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Feb 03, 2007, 04:47 AM
wishes this caption was longe
will_newton's Avatar
I'll be the first to sign on for this one.

I'll be flying my Art Hobby Andromeda 2M poly.
-Brushless multiplex 480-3g
-12x6 prop hooked to a 4.4:1 gearbox
-Castle Creations 45-A ESC
-Maxamps 2100HV 3-cell lipo
-Electron 6 rx and JR 281 digitals

This sailplane has an Allegro tailgroup and flying stab setup courtesy of a previous owner. This plane is setup to be super stable and gentle to handle. Level it out and you can glide for a long time and never touch the sticks.

Somewhere between now and then I hope to have some landing flaps added. If a miracle happens I may finally get my Organic 2.5e flying or my frankensteined together electric handlaunch.
Last edited by will_newton; Feb 03, 2007 at 04:58 AM.
Feb 03, 2007, 08:25 AM
Registered User
discus-330's Avatar

I'm in. My R/C-Club will arrange a Winter Meeting on 17th, so it will be a perfect opportunity to show my club mates this kind of competition.

I'll either fly my GP Spirit-winged E-glider, with a 3.33:1 geared Mega 16/15/6 brushless motor, 10c GP 1300 cells, or the electrified 3.3 m Graupner Discus, driven by a Plettenberg HP300/30/A6 and 12 cells Sanyo 1950FAUP
Feb 03, 2007, 05:18 PM
Slope and thermal
Low wind set up:
- Elegant 700
- 2.7 metre wing span, 1.6 Kg with TP4000
-Axi 2820-10 motor
-TP4000 prolite 3S2P lipo
-Jeti 70 amp ESC.
-Graupner 12x7 prop.

High wind set up:
- JP Models Ion
- 2 metre wing span, 1.25 Kg
-Axi 2820-10 motor
- Hyperion VX1800 3S lipo
-Jeti 70 amp ESC
-Graupner 12x7 prop
Feb 03, 2007, 06:27 PM
Registered User

Feb> Postal Contest

Hi Bob,

I will be flying an Art Hobby IBIS 3M.
-Brushless Multiplex 480-3G
-14x9.5 prop hooked to a 6:0:1 gearbox
-castle Creations 45A ESC
-2400 ma 12v NMH battery

Feb 05, 2007, 10:09 AM
Registered User
Enter me please

Simon Nelson
South Africa

Lanier XE (own design)
2.7 meter span
Hacker B 20 with 4 to 1 box, 15 x 10 prop 3 cell 2200 poly pack
Weight 950 gms

Thanks Sy
Last edited by Simon L Nelson; Feb 06, 2007 at 12:46 AM. Reason: Pictures added
Feb 05, 2007, 10:33 AM
The Mr. Rogers of RC soaring
rdwoebke's Avatar
I am in again! I'll likely fly my Allegro Lite. Speed 400 and 11x8 folder. 2S 1320 lipo.

Latest blog entry: Supergee wing mount pylons
Feb 05, 2007, 03:55 PM
AZ Outback
Robert Burson's Avatar
Thread OP
Thought you might like to see some design ideas coming from Europe. We are 5 degrees F today so we will at least have some temperature points in the next few weeks.

The Best
Last edited by Robert Burson; Feb 06, 2007 at 09:34 AM.
Feb 05, 2007, 04:10 PM
Registered User
Soar-on's Avatar
I'll be travelling during the February round, but please count me in for March.

I'll be flying:

Sky Sergio
e-Flite 400 outrunner
12 x 7.5 folding prop
3s 11.1v 2100 mAh LiPo
Jeti 22amp "Spin" ESC
Berg 7 rcvr
Dymond DS4.7 and Hitek HS56HB servos


Dreamline 1.8e Pro
Hacker B20 18L + 4.1:1 gearbox
12 x 7.5 prop
Jeti 20 Amp ESC
3s 11.1v 2100 mAh LiPo
Hitek HS55 servos
Hitek Electron 6 rcvr

Last edited by Soar-on; Feb 06, 2007 at 04:53 AM.
Feb 05, 2007, 06:29 PM
Registered User
robert, you guys are all nuts...regards,ken troxell
Feb 06, 2007, 02:00 AM
Registered User
Where do I find the attachment for more info etc?

If I leave the glider in the freezer does that count for the Temp bit?

Feb 06, 2007, 03:44 AM
F3J, F3K and F5J eXtreme
markStockton's Avatar
Hi All

Time to climb back into the X5J saddle again. I'm a little unsure which power chain I'll use with my way to heavy and draggy Graupner Cumulus. So I'll have to post those details closer to the time.

Feb 06, 2007, 03:51 AM
F3J, F3K and F5J eXtreme
markStockton's Avatar
Originally Posted by Simon L Nelson
Where do I find the attachment for more info etc?
It's at
Feb 06, 2007, 05:34 AM
Registered User
ohmite's Avatar
I'm in again with either my HighAspect 3.1M or my Omega with a 28mm outrunner.

Question: For the 28mm outrunner bell diameter motor class, what dimension of the bell length is to be used, from the rim of the bell to the back plate of the bell or from the rim of the bell to the end of the flux ring (where the steel flux ring ends and it transitions to aluminum usually and forms the back plate)? Would it be better to just define the size of the stator, i.e., 2215 or 2218, etc? If this question has already been debated, please point me to that debate (I missed it).

Weather here has been horrible, snow, snow, snow---almost 2.5 ft over the weekend, and no sign of ending...

Feb 06, 2007, 09:46 AM
AZ Outback
Robert Burson's Avatar
Thread OP
Hi Eric,

For the Axi motors it would be the 2212 series, the 2217 would just be to much of an unfair advantage. Sorry if there has been any confusion on this.

Is the Axi you are using the 2808/16 ? What battery and how many cells.

The Best

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