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Other › Update: Using the Align 2800KV/ 400S Motor
12-10-2004 07:43 PM  13 years agoPost 1
hpilotrc

rrVeteran

NY--->>Mooresville, NC USA 8/2005

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I finally received my parts yesterday and was able to give this motor a try indoors. The 13 tooth pinion turned out to be too much for the heli (head seemed to be overspeeding), so after two flights of hovering I went to a 11 tooth. I also am still using the cheap plastic blades. I don't know what difference the wood blades will make???

Now the helis head speed seems to be much better and I am getting 14 minutes+ of hovering indoors with a TP2100 3-cell pack. Currently my battery is charging up again (takes about 80 - 90 minutes for a full charge, on my Orbit Microlader V6.3).

The pack only gets warm although the motor is on the hot side (low advance timing on my Ph25). When I get some decent weather to try it outside I tend to believe that although this motor will be ok for sport flying....it will not have much power for 3D type flying (like my previous Mega 15L (400L) motor. I still have this motor and need a smaller then 11 tooth pinion for it.

In the future I would like to maybe try a Mega 16/15/3 or a JGF 400DH.


Update: Saturday Dec 11,2004

Well now that I tried the T-Rex outdoors I can see that the 11 tooth pinion isn't the right choice after all. The heli hovers ok but has no lift power. I also do not have a micro pitch gauge so I have no idea what my pitch is. Inside the house, the blades and heli make much more noise and tend to fool you as far as how fast the head speed is. Anyway I just put back the 13 tooth pinion and will give it a try when the battery is re-charged....

13 tooth pinion is fine outdoors for flying around in front of my house. I changed the timing on my CC Ph25 to standard and obtained12 minutes of flight. Tomorrow I hope to take it to the field for some real flying around. I am still using the cheap plastic blades.

Setting the current limiting on insensitive I now notice with the new FW (1.10) that power/head speed just slows down when the batteries voltage drops. No abrupt cutoff like before. This is nice!

Michael

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12-10-2004 08:35 PM  13 years agoPost 2
jackheli

rrProfessor

Vancouver - Canada

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I had no problems with overspeeding. I am running the motor with 13T, 1500mAH packs and an Align 25A ESC.

My headspeed is locked up at 2000rpm on a hover.

What is your headspeed?

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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12-10-2004 09:26 PM  13 years agoPost 3
ErichF

rrElite Veteran

Sutton, NH

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You don't run an outrunner like the Align 400S on low timing. Low Timing is for 3-5 pole motors. Set to mid to high timing. That's probably why your motor isn't keeping up, unlike everyone else's around here. I get 15 minute indoor flights in Idle Up 2 (2300rpm) with the TP2100. I have my Align ESC set to mid timing, using the 13t pinion, and I was using the plastic blades. I just switched to the 315 woodies, and am collecting data on them still. I also just received my 285mm Carbon Zoom blades, and will try them this weekend.

In any case, I doubt it's your motor that's not right.

Erich

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12-10-2004 09:33 PM  13 years agoPost 4
mrNoodles

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Borlänge, Sweden

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Cant say I notice any overspeeding problems either, Im using the 315mm woodies.
More a feeling of need for higher headspeed.
Throttle curve is set to 95-90-95 in idle up, those Align ESCs comes preprogrammed and adjusted right?! Or have I missed something?

Hmm I must calibrate the ESC by setting high and low stick position, right? And the rest of the setup...

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12-10-2004 09:49 PM  13 years agoPost 5
jackheli

rrProfessor

Vancouver - Canada

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mrNoodles,
Or have I missed something?
Check:

Align ESC Manual in English (of sorts)

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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12-10-2004 09:51 PM  13 years agoPost 6
mrNoodles

rrProfessor

Borlänge, Sweden

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Jack
Reading it right now
Oops, might have the answer to why I lost 5m height when trying my first flip today
Will do the setup procedure tomorrow and give another try.

Damn nitros is easier

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12-10-2004 10:57 PM  13 years agoPost 7
jackheli

rrProfessor

Vancouver - Canada

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I took me quite some time to understand the manual.

Let me know what you decide to program your ESC with.

Jack

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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12-10-2004 11:02 PM  13 years agoPost 8
mrNoodles

rrProfessor

Borlänge, Sweden

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Jack
Im thinking of, no break, mid timing and the lower setting (higher volt) protection.
What would you recommend?
Im using the combo battery at the moment (JetPower 2200mA).

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12-11-2004 12:14 AM  13 years agoPost 9
ErichF

rrElite Veteran

Sutton, NH

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I set mine to no brake, mid timing, and mid cut-off...if you set that cutoff too low, you can damage your lipos. Only use the low cut off if you run NiMh or NiCd (and who does?). I may set to high timing and try it this weekend, but I think I will lose a lot of efficiency and duration for very little power gain.

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12-11-2004 12:22 AM  13 years agoPost 10
jackheli

rrProfessor

Vancouver - Canada

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You guys are saying the same thing...

Put the voltage protection to cut-off at the highest possible voltage. I also use a voltage monitor I constructed myself (see my gallery).

The voltage cut-off will only work if you turn the ESC on when the battery is fully charged. I think it only samples the starting voltage once, during start-up. After cut-off I get to charge 1350mA back into my 1500mAH batteries, which is pretty reasonable.

Mid timing and no break also.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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12-11-2004 12:28 AM  13 years agoPost 11
mrNoodles

rrProfessor

Borlänge, Sweden

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Will try to set up the ESC tomorrow, feels kind of scary to connect the battery with the throttle stick all way up.

Will let you know how it turns out!

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12-11-2004 01:25 AM  13 years agoPost 12
jackheli

rrProfessor

Vancouver - Canada

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The motor shouldn't start, but for safety take the pinion off, or at least hold the helicopter securely to the ground with weights.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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12-11-2004 07:43 PM  13 years agoPost 13
hpilotrc

rrVeteran

NY--->>Mooresville, NC USA 8/2005

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Updated info.....
Please see original post for an update.

Michael

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