rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 292 ONLINE 28 EVENTS SEARCH REGISTER  START HERE
 
3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ]2061 viewsPOST REPLY
Midland Helicopters . HeliProz . ZoomsHobbies

.
.
e-Minicopter Joker > MJ2 Crash Avoided?
 
 
fergus
Veteran
Location: Ireland

Great News Rosauro. I thought for a while we were going to loose you to Bergen

Hope things continue to improve

Regards

Fergus
07-01-2008 09:00 AM
 
 
nooobs
Key Veteran
Location: Toronto, Canada

I think I've finally figured out the MJ2. ...well you figure after all the crashes I've had I better figure it out... LOL I've learned a great deal from this experience.

I thought about getting a Tazer but I looked at all my spare parts and maybe it was probably best to stay. Then after some emails with Chris B., the Tazer seemed it was still in its infancy stages. Well, it is. I'm sure many helicopters went through this stage.

But that wasn't the deciding factor. After some talks with Gerd I decided to stay.
07-01-2008 09:09 AM
HOMEPAGE  
 
 
nooobsKey Veteran - Location: Toronto, Canada -
I think the MJ2 gremlins are gone and my troubles are behind me now. Today I flew the MJ2 with confidence against a 43Km wind. No problem. The only thing that stopped me was that I didn't have night blades.

After seven major crashes I've learned a lot.

Going to spend a couple of weeks doing some flight test then I'll install the mount. Hope all goes well.


07-14-2008 06:12 AM
HOMEPAGE  
 
 
daytonabeach
Veteran
Location: Oslo, Norway

CONGRATS ROS!

Isnt it a great feeling?
Its like flying a locomotive, dont you think? solid and stable, no sudden movements

Have some days of this week, and planing to take the car for a daytrip, bring my aggregat and charge wherever i decide to go, drive around and try to find some cool spots for pics to my homepage, about time that as well

Happy flying!!!!

Chris

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
07-14-2008 10:21 AM
HOMEPAGE  
 
 
nooobsKey Veteran - Location: Toronto, Canada -
Thanks Chris. Yes it is a great feeling. Finally!

My experience has been both good and bad. I'm leaning more on the good side now. With all the crashes I had everytime I got her up in the air it taught me a lot more about the heli.

Going to update my MJ2 build and add "Crash Notes". I discovered a lot of things about the heli that even the most unsuspecting part could give you the biggest headache.

This will probably be the last time you'll see my MJ2 looking like this. If all goes well with my test within the next few weeks I'll start on the modifications.

07-14-2008 06:55 PM
HOMEPAGE  
 
 
rroback
Key Veteran
Location: Irvine (UCI), Ca

remember pre and post flight checks... especially all those items on your crash list!

Rhett... I can't fly, luckily the HC Profi Can!
07-14-2008 09:23 PM
 
 
nooobs
Key Veteran
Location: Toronto, Canada

Thanks Rhett. Don't worry I'll never forget my "crash list". It's the first thing I check now.

Pretty soon your heli is going to have a look alike younger cousin.
07-15-2008 03:46 AM
HOMEPAGE  
 
 
tabbytabb
Elite Veteran
Location: seattle

Glad to see you have parked the "junker" and taken out the Bentley






Tabb
07-15-2008 10:42 PM
HOMEPAGE  
 
 
fergus
Veteran
Location: Ireland

Quote 
Glad to see you have parked the "junker" and taken out the Bentley

Its not just for Sundays though Rosauro

Regards

Fergus
07-15-2008 11:09 PM
 
 
nooobs
Key Veteran
Location: Toronto, Canada

Quote 
parked the "junker"

Actually "blinged" out the junker... it's a like a Honda Civic with nitro. LOL Thanks Tabb. Give it some time and this Bentley will be a HUMMER.


Quote 
Its not just for Sundays

You know me... everyday flight test...


I played around with the throttle curve today. I'm at 100% on the TX with a flat curve. Is it just me or is the motor and lipos cool to the touch after 12 minutes of flying...? I'm lovin' this! (32-4 & PowerJazz) ...this is still below the 80% rule!
07-16-2008 03:58 AM
HOMEPAGE  
 
 
phil007
Senior Heliman
Location: Austin, Texas

Quote 
I'm lovin' this! (32-4 & PowerJazz) ...this is still below the 80% rule!
It must be that cooling hole over the motor in your canopy. Are you running LiPos in a 10s or 12s config? I over heated my Actro 24-5 and might upgrade to the 32-4 because of your cool temps.

Phil
07-16-2008 04:53 AM
HOMEPAGE  
 
 
nooobs
Key Veteran
Location: Toronto, Canada

Hey Phil... long time...

LOL... that hole was for the Pletti... that's sittin' around doin' nothin'. Anyway, I won't need a canopy soon...

I'm running 12s (2 x 6s 5000) with 12T.

The motor temp was 34°C (93°F), Lipos were 40°C (104°F), ESC was 32°C (89°F).

Temperature outside was 24°C (75°F).

I could have flown an extra 2 minutes to hit 80%.
07-16-2008 05:21 AM
HOMEPAGE  
 
 
phil007
Senior Heliman
Location: Austin, Texas

Quote 
Hey Phil... long time...
My Joker has been collecting dust while I have been playing with electronics, panoramics and try to get a better handle on Photoshop. Now its time to add the helicopter back into the mix to see what I can do with it.

Quote 
Pletti... that's sittin' around doin' nothin'.
Why did you go from the Pletti to the 32-4? Which motor do you like better?

I ordered the Temperature sensor for my Eagle Tree Systems eLogger yesterday so I can start watching the motor temps on my 24-5. I don't think it's running as cool as your 32-4 and I might decide to get a new motor if this one is running too hot. After a 10 minute flight with an additional 6lbs I can't touch the motor.

Phil
07-20-2008 02:49 PM
HOMEPAGE  
 
 
nooobsKey Veteran - Location: Toronto, Canada -
You might want to lube up your o-rings if it's been sitting around for awhile.

The Pletti ran hotter than the 32-4. Maybe it was my setup. I couldn't touch the motor after flights.

I definitely like Actro motors better. My MJ2 and Trex both have Actros with the same "cool" results. The only time I was able to warm up the motor was after some hard sport flying.

I also have my Schulze sitting around. It's not damaged as I previously thought. I think the PowerJazz is better overall. Super cool.

07-21-2008 03:29 AM
HOMEPAGE  
 
 
Gerd
Senior Heliman
Location: Vellmar/Germany

Small hint: When you turn the PowerJazz 180 degree, the cables to the motor are much shorter. These three cables produce a lot of electric noise that can cause heavy radio interferences. I always try to go the shortest way here, that means cables of the motor to the front and controller cables so short that you can plug it in direct in the motor. With the PowerJazz with its thick and vertical cables this is not possible, but try to turn it and look for shortest curves. Or perhaps you can mount the PJ 90 degree besides.
07-21-2008 07:03 AM
 
 
phil007
Senior Heliman
Location: Austin, Texas

I meet up with a local guy today that has two Joker 2s and determined that my Actro's top bearing going bad. He had a temp gun that showed the bearing at 179°F with the internal windings/outer casing at 130°F. His Pletti was about 130°F after a 15 minute flight.

I'm going to work on the Joker this week, lube everything and see if I can get it to 100% for next weekend when we'll check the temps again. There's a good change that I'll be replacing the top Actro bearing.

Phil
07-21-2008 07:12 AM
HOMEPAGE  
 
 
Gerd
Senior Heliman
Location: Vellmar/Germany

You you must look on your actro for a small end play of the bell, about 0.1-0.2mm (that you just can feel it). When the motor becomes warmer during flight the aluminium made bearing body is becoming longer than the shaft, so you can get a thrust force on the bearings that can cause a lot of friction and heat. So when you have washers between snap ring and front bearing adjust the play there if necessary. If not then replace the snap ring thru an 8 mm bush between bearing and gear wheel.
If you have that end play I assume your belt is tightened too strong.
And when it is currently very hot in Texas an additional electric fan is never a bad idea.
07-21-2008 07:46 AM
 
 
daytonabeachVeteran - Location: Oslo, Norway -
Quote 
Small hint: When you turn the PowerJazz 180 degree, the cables to the motor are much shorter. These three cables produce a lot of electric noise that can cause heavy radio interferences. I always try to go the shortest way here, that means cables of the motor to the front and controller cables so short that you can plug it in direct in the motor. With the PowerJazz with its thick and vertical cables this is not possible, but try to turn it and look for shortest curves. Or perhaps you can mount the PJ 90 degree besides.

Gerd!

Do you think this way will cause any pain?



Sorry for the enormous picture
Chris

Never argue with an idiot, he'll drag you down to his level and beat you with experience...
07-21-2008 11:43 AM
HOMEPAGE  
 
 
nooobsKey Veteran - Location: Toronto, Canada -
Chris

Just a suggestion...

Overlap your heat shrinks to prevent any chance of short circuit.



07-21-2008 12:13 PM
HOMEPAGE  
 
 
nooobs
Key Veteran
Location: Toronto, Canada

Also remove the red tie-wrap that's holding the PJ. Move it in between the heat-sink just like the green one. In an event of a crash depending on the direction of the crash the capacitors will get ripped off the PJ. I've seen this happen...
07-21-2008 12:15 PM
HOMEPAGE  
 
 
3 pages [ <<    <     1     ( 2 )     3     NEXT    >> ]2061 viewsPOST REPLY
HeliHobby . Ron’s HeliProz South . Century Helicopter

.
.
e-Minicopter Joker > MJ2 Crash Avoided?
  UPDATE SCREEN   PRINT TOPIC Advertisers 

Subscribe to This Topic

Tuesday, October 7 - 9:31 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie