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Oct 02, 2007, 06:34 PM
AZ Outback
Robert Burson's Avatar
Thread OP
Discussion

Last X5J eXtreme Oct 13th/14th Sign UP


X5J eXtreme 2007 and Event dates.

News: This summer I will be working with some new ideas for a seperate sailplane class without any handicap, using a set of parameters for maximum power,maximum wingspan and minmum weight. This class would run seperate from the X5J event. While I have a good set of the numbers in my head, I would like to use the rules in a set of three different planes to see the actual results. I will try to post up the planes and the results over the summer.

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. "restarting...on...off")

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, on or by October 12th.

To all who enter,

The Best Soaring

Robert
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Oct 03, 2007, 11:23 AM
Just plain ridiculous. Sir.
rdwoebke's Avatar
I'm in. This 17 mm length on the outrunner, is that the entire motor, or just the spinning part? I have an A20-20 clone and I think that this is "X5J outrunner class legal" but wanted to check.

Ryan
Oct 03, 2007, 12:48 PM
Registered User
Johan L's Avatar
Hello!

I'm in with my Simply the Best 180E

AXI 2217/9D 1880kv
Cam Folding prop 8x6
JETI 40-3P PLUS
FP EVO-25C 1200mAh 3S1P.

Weight 520 gr (18.3oz)

Power with FP EVO-25C 1200 mAh: 510-325Watt in 12 seconds

/Johan
Oct 03, 2007, 06:33 PM
AZ Outback
Robert Burson's Avatar
Thread OP
Hi Ryan

Quote:
This 17 mm length on the outrunner, is that the entire motor, or just the spinning part?
The spinning part, or the can that contains the magnets. Your motor will be fine.

The Best Soaring

Robert
Oct 04, 2007, 09:38 AM
Just plain ridiculous. Sir.
rdwoebke's Avatar
OK. I'm flying an A20-20 clone in my Allegro Lite then. 12x6.5 Aero Naut folder, 2S 1320 lipo. All up weight about 20-21 ounces. It has given me a new upgrade on this old favorite of mine. :-)

Ryan
Oct 04, 2007, 01:40 PM
Registered User
Quote:
Originally Posted by Johan L
...I'm in with my Simply the Best 180E...
Johan,

What is the wing span on your plane - 1.8 M? In any case, that is a great glide time on a powerful climb. If I were you, Id try to avoid thermals, as they could only cause trouble in making the 10 minute time!

FF
Oct 04, 2007, 01:48 PM
Registered User
Im in again for October with one of my two mid-sized e-gliders:

Calmer conditions:
Art Hobby Andromeda 2M (SD 7080 wing)
Motor/Prop: Mega 16/15/3 direct drive to 9x5 prop.
Battery pack: 7-cell Elite 1500 2/3A
AUW: 26 oz

Windy conditions:
Art Hobby Andromeda 1.9 M (HN 1033 wing)
Motor/Prop: Mega 16/15/7 direct drive to 9x5 prop.
Battery pack: 10-cell Elite 1500 2/3A
AUW: 32 oz

FF
Oct 04, 2007, 03:09 PM
Registered User
Johan L's Avatar
Forest Flyer!!

Ving span is 180cm! Simply the best
Yes! Im looking forward to the winter!

Johan
Oct 05, 2007, 12:20 PM
mostly gliders
liukku's Avatar
Hello everyone
I will try my luck with my rebuilt Tango, http://www.rivamodels.sk/tango_en.html
I made the maidenflight a couple a weeks ago and
this time it was a big success . I maybe write a longer
review over the model in a new thread.

Model: Tango (2,59 meter)
Motor. AXI 2826/10
ESC: JETI Hacker Master 70-3P ESC.
Separate receiver-accu: 4-cell GP 1300 mAh.
Battery: Flight Power Evo 25 v-power, 3s-2500 mAh.
Propeller: Aeronaut 14x9, 35 mm platic Aeronautspinner
Allupwegiht: around 1360 gram. (Maybe a little heavy, I dont know yet)?

I will use Zlog for altitudereadings and an EagleTree MicroPower USB-Log
to record electric flows.

Happy landing to all of you.

/Ville
Last edited by liukku; Oct 06, 2007 at 06:57 AM.
Oct 05, 2007, 12:59 PM
Pontificating Member
tone's Avatar
LAST?

I'm in with:
my Ascent (yes again) - mega outrunner, 3s 1320, 9x4.5, 16.6oz
or
Sky Sergio - 3s 1320, 9x4.5, 19oz... can recall which motor is in it right now, it has had about 5 so far, and im still not happy..
Oct 05, 2007, 01:03 PM
Just plain ridiculous. Sir.
rdwoebke's Avatar
Quote:
Originally Posted by tone
LAST?
Robert generally has just been running X5J Extreme Jan through October.

Ryan
Oct 05, 2007, 02:36 PM
tender
tender's Avatar
If the weather is good, I will fly with my Tango-plus

Model: Tango-plus (2,85 m)
Motor: S-NEU 1506 3D
ESC: JETI Hacker Master 70-3P BF
Battery: Dualsky 15C, 4s-4000 mAh or A123 4S-2300 mAh.

Palo
Last edited by tender; Oct 06, 2007 at 10:57 AM.
Oct 09, 2007, 07:22 AM
Registered User
BigTilly's Avatar
I'll fly with my Wind Dancer. Bl400-8D,4.4:1, 13x10, 4S 1500
Oct 09, 2007, 07:52 AM
Tragic case
davidleitch's Avatar
I am out of town saturday but hopefully will be able to fly sunday in which case the supra on 4S 2500 and Hacker B40 6L+6.7 carbon case. Had the contest been last Sunday the weather was absolutely perfect, warm without being hot and thermals all morning.
Oct 09, 2007, 10:15 AM
Registered User
I am on vacation and almost a thousand miles from home, so I can't fly this time. Good luck to all.


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