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09-07-2006 07:47 PM  14 years ago
JB642

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MI - USA

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Let me know how she flys!

JB
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09-07-2006 08:13 PM  14 years ago
xStatiCa

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New Port Richey, FL

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That worked as expected (flew it at lunch). I used 60% throttle and that seemed to make the bird fly better but the climb speed is pretty pathetic now. Thanks again for the DX6 THS info. Unfortunately I found out that the Eagle Tree micropower elogger optical RPM sensor does not work very well outside. I only got maybe 6 or 7 half a second blips that showed the RPM during the 7 minute flight. Inside it worked just fine. I assume the sun is drowning out the sensor. .

I also crashed right at the end. I tried going into idle-up at about 30 feet up but hit throttle hold instead ! I am not used to using idle-up yet as you can tell. The bird dropped like a rock very quickly. I was expecting it to drop or climb some when I flicked what I thought was idle-up but I could only laugh when I saw it drop like a rock into the soft grass. Luckily it was over a grassy area that was about 1.5 feet tall which cushioned the landing instead of another 5 feet out it would have been in the pond. The default wood blades survived and the only thing that was damaged was the feathering shaft. I doubt I could ever do an auto with these blades... they seem to stop very quickly(pinion is probably a bit tight too).
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09-08-2006 02:37 AM  14 years ago
JB642

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MI - USA

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Try "coloring" the area your sensor is looking at with a black permanent marker....I read somewhere that that helps some of the other optical sensors out there.

The Eagle Tree optical reader is new. I'll have to check it out!

Glad to hear your crash was minor! When I fly, I bring the heli up to speed and then switch to Idle up prior to take off for that reason.
Nothing like trying to fly inverted with the heli in normal mode.....It's a real bad "sinking" feeling!

JB
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09-08-2006 02:46 AM  14 years ago
JB642

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MI - USA

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xStatiCa-

I was looking at the Eagle Tree on-line manual for the optical sensor and it recommends coloring the area with a black marker on page two -

Let me know how it works - I have the magnet based sensor for my logger but its a pain to install...

JB
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09-08-2006 03:24 AM  14 years ago
xStatiCa

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New Port Richey, FL

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I have half of it painted black with krylon ultra flat black paint. I had the sensor about 2 - 3 mm away. I moved it to about 1.5mm away from the gear. Hopefully that helps. I am off to do a test at night so it should work regardless. I will try to do another day time test tomorrow to see if that fixed it.

I might try going to idleup on the ground from now on to keep from accidentally hitting throttle-hold.

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09-08-2006 03:32 AM  14 years ago
JB642

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MI - USA

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xStatiCa

You just cost me $$$!

I just ordered:

Optical RPM Sensor (4 Wire) (I've got version 1 of the logger)
PowerPanel LCD Display
Micro Temperature Sensor

Let me know how the "night flight" worked out.

JB
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09-08-2006 04:43 AM  14 years ago
xStatiCa

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New Port Richey, FL

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PowerPanel LCD Display
Nice. Let me know how you like it. I couldn't see spending the money for it yet since I just spent about $100 on the logger and 2 sensors. Give me another few months .

The night flight went great. The RPM sensor worked just fine as expected at night.

It turns out I didn't need to even replace the feathering spindle when I crashed. It fell 15 feet out of the sky with zero damage into 1.5 foot grass.

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09-08-2006 05:33 PM  14 years ago
Swashplate

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UK

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hello all
i use kontronk micro dancer (2550KVa) on 14T with Jazz 40-6-18. I get around 10-11mins of flying time on fp evo 1800 and kokam 15c 2000.
None of these components get anywhere near warm.
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09-08-2006 05:50 PM  14 years ago
JB642

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MI - USA

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Wow - Your RPM sure was locked in!!! Have you tried flying in the day with your pickup moved? Better or same results? What was your motor pinion for that flight? (Still using the 430L?)

Thanks

JB
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09-08-2006 08:41 PM  14 years ago
xStatiCa

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New Port Richey, FL

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Havent tried a daytime flight yet with the moved sensor(was raining during lunch).

Yea. I really love this Jazz ESC. It seems to do a great job at governing. Keep in mind that I am only into forward flight and not into any 3D or aerobatic stuff yet. The hardest thing I did was do a bunch of max climbs(which I would think would be a pretty good test though). I wish I had tons of money to benchmark all the ESCs out there. x400tuning tested motors and batteries but someone really needs to do a governing benchmark with all the ESCs out there (using the same motor for each ESC).

I am using an 11 tooth pinion on a 430L with 60% throttle and default helimax wood blades. I need to move to a 10 or 9 tooth pinion so that I can crank my throttle up. The motor should perform even better around 80% throttle. My blades can't take the 2900 - 3000rpm though so I have to limit the governed throttle to 60% to get around 2550 RPM.

The flight shown above was with a partially discharged battery. I normally fly for around 7 - 8 minutes to try and take it easy on the batteries.

rameshpat, How do you like the kontronik motor?
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09-09-2006 12:50 AM  14 years ago
Swashplate

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UK

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xStatiCa
I havent used any other motor other than micro dancer on my x400, so cant really compare it to any other motor. It has been working great for my kind of flying. Mostly sport and very mild 3d.

I have always been a fan of rotating can motors. I had AXI on my hornet2. They seem to have that needed torque and run cooler.

And i love the Jazz. My heli is really smooth. I had lots of people comment on how quiet and smooth my heli is. Soft start, Governer features works flawless.
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09-09-2006 02:04 AM  14 years ago
xStatiCa

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New Port Richey, FL

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"The high end point in THS is whatever you set in THN."

I have not had a chance to test idle-up yet so I might have been a bit premature on verifying that the THS works as you suggest.

I found this in the DX6 manual though on page 80:

"Note: In Stunt mode (S), the high position of the throttle curve is preset to 100%, and is not adjustable."

If it works like you say it does then that is very misleading in the manual. I assume you verified that it works the way you describe so I am wondering if your manual says the same thing on page 80.
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09-09-2006 02:13 AM  14 years ago
JB642

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MI - USA

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Look back at the link I posted and look at Gary Hoorn's post for explnation. My DX6 works exactly that way - THS is whatever THN is set to.....your right about the misleading part!

JB
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09-09-2006 03:03 AM  14 years ago
JB642

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MI - USA

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xStatiCa

I just fired up my DX6 and set blade pitch settings to zero pitch in both normal and stunt for the full stick range. I then set TLN to 0, T2N, THN, TLS and T2S to 50 (I would try a lower number with your Jazz in govenor - maybe 30 based on your previous post of flying at 60). I fired up the heli and checked rotor rpm at 1/2 stick and full up stick while in normal mode. RPM was constant. I brought stick back to 1/2 and switched to Stunt. RPM didn't change from normal to stunt. I then brought stick to full up (slowly) and RPM remained constant! Leaving the stick at full up, I opened the setting window for THN and slowly increased it while at full up stick (and still in stunt mode). RPM in stunt mode responded exactly to the changes I made to THN!! The manual is wrong about THS staying at 100% all the time. Check it out on your radio but make sure you change PLN, P2N, PHN, PLS, P2S and PHS to whatever setting gives you zero pitch!! It's a great idea to have your heli tied down!

JB
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09-14-2006 02:57 AM  14 years ago
jh4db536

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Monterey Park, California

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15-20minutes (closer to 20)

puffed apex 2200 3s

1105/3y + 10t pinion // 1800rpm @ 70% throtle curve (low & inefficient)

will break 20min for sure if i use a smaller pinion as i am running under the efficient range of the 1105.

FB311 blades

update:

now running an AON3000 and 11t pinion. broke 20 minutes with ease. landed 2-3minutes before cutoff. might gain more flighttime with a 10t and increased throtle curve.

much less power than the 1105 for sure. i was catching the wind with the heli and then it sank. if i didnt force it into fff i wouldve crashed as i have no reserve to pull out of a situation like that.

wish i had a flightrecorder to log this. my amp draws have got to be like 5-6. i wonder if i could run my heli on a phoenix10 ESC...
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04-08-2007 04:36 AM  13 years ago
garycoughlin

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alberta canada

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ultrafly motor
I have just upgraded to the ultrafly 2750 kv c/13/28 motor with a 11 tooth pinion . It has very little power using 1800 3 cell lit battery .before I did the conversion the stock 14 tooth 6 pole helimax motor was giving me 12 minutes of flying time . What is wrong.
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04-08-2007 05:00 AM  13 years ago
garycoughlin

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alberta canada

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ultrafly motor
Anyone with experience using the ultrafly c/13/28 motor on mx400 or
t-rex
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04-09-2007 05:24 PM  13 years ago
garycoughlin

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alberta canada

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14 MIN 10 SEC. STOCK 6 POLE HELIMAX MOTOR 1800 MAH (FLIGHT POWER EVO 20). I use homebrew rotor blades 325 and 11 tooth pinion , forward flight and hovering only .
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04-11-2007 03:22 PM  13 years ago
boing69

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powder springs ga

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My heli is now a ballistic missle after going from 12t to 13t. My current setup:

CCPM Helimax CF frame
CF tail tube (picture shows different)
430L 3550kv w/ 13T pinion
35AMP Align esc
325mm Align pro blades
Parkbec
hs65's swash
401 and 9650 on the tail
Align metal head
Align metal tail
Microheli front drive shaft/gear/pulley
6 DN power 2150 maH 20C
good for 5 minutes of 3d

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06-12-2007 06:53 PM  13 years ago
pam-mo

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pittsfield, MA - USA

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do the TREX pinions work on the MX 400?
I have an mx400 without any pinions and want to buy an align 430l 3550 with a 10, 11 or 12t pinion (3mm shaft)But I can't find any pitch info to tell me if the trex pinions are compatible with a standard mx400.

I plan on getting this thing in the air for cheep and slowly replace the equipment.
infinity 660 pcm (huge receiver)
castle phoenix 45 (overkill)
battery TBD (may try a 4s lipo I have for an airplane)

thanks .. good luck :-)
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