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Feb 07, 2009, 10:06 AM
AZ Outback
Robert Burson's Avatar
Thread OP

X5J eXtreme February 14th/15th Sign Up

Welcome, back for the sixth year.

Introducing a new classes: that will run with the X5J eXtreme rules except without a handicap on motor type.

X5J 1.5M class

Wingspan 1.5M limit, motor small outrunner (bells depth limited to 17mm), maximum weight 452.8g or 16oz. Maximum lipo nominal voltage 7.4.
5min flight task. Flight time - motor time. 30 point landing tape.

X5J America class

Power 4s A123 cells, minimum weight 2.0Kg or 70.7 oz. No motor handicap.

I will score these classes seperate from the X5J eXtreme, and place X5J America class, in the final standing.


Remember all photos of new ships and OLE favorites are encouraged.

Please read all rules, if you have not flown this event before, everyone else, will note they are unchaned from 2007.

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%. The X5J America Class will have no motor handicap. 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, on or by April 13th.
To all who enter,

The Best Soaring

Last edited by Robert Burson; Feb 15, 2009 at 08:48 AM.
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Feb 07, 2009, 10:43 AM
turn, turn, turn.
Topas S
Multiplex BL 480 4D w/4.4:1 gb.
13x7 CFK prop
3s 2200 lipo...Parkzone
52 oz. AUW

By the 14th or 15th, I may have a different prop and battery:
15x8 CFK prop
3s 2100 TP Extreme.

Either way, I'm in.
Feb 07, 2009, 05:04 PM
Super Secret Agent
CV580drvr's Avatar
Sadly for me I'll have to miss this go around. I'm out of town, and will miss the X5J by two weeks.

I really enjoy Robert's X5J postal, and it's almost painful to miss out on the flying.

Best wishes, and Great lift to all participants!

Feb 08, 2009, 05:43 AM
Registered User
ohmite's Avatar
Hello Robert,
I'm in with my High Aspect 3.1E, with a Hacker B40/9L+4.4+15x10+3STP3300Ex+CC60. or my Omega 1.8+Scorpion2215+12x6+3xTP2100Ex.
Let's hope for a little warmer weather and good thermals!
Feb 08, 2009, 06:18 PM
Registered User
Im in for the February X5J event. As usual, depending on the weather, I'll fly either a 1.9 or a 2.5 M Art Hobby plane with a direct-drive, brushless inrunner power system, and a 3S 2200 lipo pack.

Feb 08, 2009, 06:19 PM
Registered User
Originally Posted by Kenny Sharp
Topas S
Multiplex BL 480 4D w/4.4:1 gb.
13x7 CFK prop
3s 2200 lipo...Parkzone
52 oz. AUW
Sounds like a beauty. Post a photo if you have one!

Feb 09, 2009, 11:23 AM
Registered User
"Home built balsa bird" - 1900 mm, 1000 g
MVVS 3.5/960, Ae 12x6.5, ESC MGM25, 3s1600

Feb 09, 2009, 12:23 PM
The Mr. Rogers of RC soaring
rdwoebke's Avatar
I'll put up some flights of the Allegro. Allegro Lite. A20-20 clone. 2S 1320 lipo. 12x6.5 folder.
Latest blog entry: Supergee wing mount pylons
Feb 09, 2009, 04:43 PM
turn, turn, turn.
Originally Posted by Forest Flyer
Sounds like a beauty. Post a photo if you have one!

I took it out in front of my house this afternoon, and took some shots.
I haven't maidened the E-version yet, but it's only 7 oz. heavier than the sailplane version.
I don't think it should fly too much differently.

Lots of snow here.
Feb 11, 2009, 11:22 AM
I need a bigger garage...
ajreynolds's Avatar
I'll try for the 1.5M event again. Chrysalis HLG-e, Scorpion 2208, 2S lipo, 13oz AUW. Depends on weather of course, it's been raining alot recently and we're supposed to be getting more.

Feb 11, 2009, 03:13 PM
Tragic case
davidleitch's Avatar
I'm going to see if I can find some time this weekend with a Pulsar 3200, Neu 1506 2s 3300.
Feb 13, 2009, 08:39 AM
AZ Outback
Robert Burson's Avatar
Thread OP
Back with the Pulsar speed 400 6:1 GB, 7-IB 1400 cells. Very easy to set up quickly in cold weather. If the winds are up MiniAVA with B40 F5F motor on 18 x 10 with 2s Neu 5000s.

Hope everyone can get out for the weekend.

The Best Soaring,

Feb 13, 2009, 09:36 AM
Registered User
GNieuwoudt's Avatar
Weather permitting, I am in. I fly my SP2.5:
Own design with 2.5m Epler 205 wing
AUW 1.2kg
E-flight 15
4S 2300mAh
13x8 Prop

South Africa
Feb 13, 2009, 02:08 PM
Registered User
I'm in again with my speed 400 airplane. 4:1 gb, 11x8 prop, 8x600AR.
The photos are from last September's Extreme. The airplane is beaing flown
by Don Pletcher. We don't know weather the Hawk was helping Don or Don
was helping the Hawk.

Feb 14, 2009, 10:03 AM
Registered User
GNieuwoudt's Avatar
Ok my scores is as follows:
9:56, 20 sec motor, no landing points (3x motor runs)
9:40, 10 sec motor, no landing points (16m)
9:54, 10 sec motor, 2m landing

Total = 1759

I had lots of interference from my UBEC and could not do proper landings. It was a hot summers day here in Secunda, South Africa.

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