Tuning the Warp with Castle logs

[Bob O]

I can't comment much from my phone.

And I won't have the logs up until tonight or tomorrow night being the holiday weekend. But performance was great on the Scorpion with 16T. I tried to duplicate the flight with the set of maneuvers to see how the numbers changed.

I'll post a full report when I get some time on the desktop.



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[Bob O]

Well, the Compass motor never got hot for me on 16T. I tried it at 8 pwm with both mid and high timing, and at 12 pwm both mid and high timing. I couldn't feel a difference from the first flight to the fourth flight. Although I haven't tried it, I believe the 17T pinion would be a better match for this motor compared to the Scorpion on 16T.

I'll post some logs for the Compass on 16T later. But first I wanted to post the two maneuver logs, the only difference in setup being the first log was on 17T, and the second log from today was on 16T. Here they are. The big surprise is how much cooler the ESC ran, about 34 degrees cooler. The outside air temperature was about the same for both days. Despite the current draw being a little lower, the motor didn't feel any weaker. Power out % was a little higher as expected with the lower gearing. 746W was the max power produced during this flight.

The logs look fairly identical except for the temperature line.

For the sake of keeping this organized, I'll post some other logs in a separate reply post.

[Bob O]

Same flight basically as the previous one, the only thing changed was motor timing, I increased that to Mid for this flight. The amount of power felt the same, but the delivery felt more crisp.....sort of weird. The biggest thing I noticed was two instances of over-speeding when unloading the disc. I hadn't detected this at all with timing set at Low with either the 16T or 17T pulley. Also, the ESC temp was up 12 degrees from the previous flight, but still lower than it had been on 17T.

851 Watts power output on this flight.

ADDED:

I did notice the motor was warmer to the touch. Not hot, just very warm. On Low timing the motor was only ever moderately warm.

[Bob O]

Here was the third flight today, which was still at Low motor timing. I wasn't doing anything specific, just tried to hammer it as continuously as I could, throwing in some hard 3D, some smack, some big air, etc. Peak power was as you see it where the line is, over 900W !! My best guess is this was during a big, full collective outside power loop either by itself or one with a half or full piro thrown in during the top half of the loop.

The stock motor logs will have to wait for a different day. They can't compare though on 16T. I'll have to put the 17T pulley on there for a fair comparison.

[Danny Dugger]

Very nice work, thanks Bob. Looks like the gov and power output are a little more stable with the 16T. Thats what I was hoping to see! Im glad you tried it at normal timing too I was going to try that but it looks like it's not really worth it, I bumped mine back to low. You saved me a bunch of trial flights :

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[chrismechanic]

so do i get a choice of pinions with my kit? or do they supply just 1 pinion.
im going to be using the standard motor
chris

[Danny Dugger]

Originally Posted by chrismechanic

so do i get a choice of pinions with my kit? or do they supply just 1 pinion.
im going to be using the standard motor
chris

Kit comes with the 16t pinion. Youll have to buy any others separately.

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[chrismechanic]

ok, thanks freeko

[Danny Dugger]

Successful maiden this morning :

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[Danny Dugger]

Just flew another pack and tossed it around a little. Needs a little fbl tuning still but its not too far off. Im seeing a fair amount of dust from the main belt is that normal or should I be concerned? I have it set with about 1/8" give if you press between the pinion and main pulley. Belt teeth look good and it hasn't slipped at all.

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[Bob O]

Freeko,

Yes, I'll be setting it back to Low timing before my next outing. I have no desire to try High timing. And I'm not going to try 12 Pwm being that the temp of the ESC is already above 150*F.

Regarding belt dust, I only had a little bit when running the belts "loose". I prefer them snug. I put new belts on after my crash last week, and I snugged them up good. I've had 13 flights since then and no belt dust.

If you look on the outer (smooth) side of the belt, there should be some rub marks where you can tell which belt the dust is coming from. It could also be from guide pulleys misaligned, or a pulley that's binding.

[Danny Dugger]

I had to remove a bearing shim from the idler pulley (where the manual calls for two) it was rubbing on the bottom of the belt. Just flew another one and no dust

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[Danny Dugger]

I might have to give that 17t pulley a go, I want more head speed :p Tic toks feel a little heavy.

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[Rahulgaba]

That's to bob O

I tried the 17 tooth on the stock motor. And man!!! What a difference! At 70 percent governed which might have been too much, it's was angry and light!!!

Esc had a low voltage shut or too much current draw shutdown. I bumped it down to 65... I think 3100 rpm, but the bird is UNBOGGABLE!!! (If there is such a thing).

It was light on its disc somehow , just much much more power!! Love it! Angry hornet!

Flew two packs , had two crashes lol ... Bird survived with a broken skid ... And flew after the crash.. Love high grass and soft land lol

Crashes were one because of the low voltage thing. And one because of me attempting an auto lol

This much power can get to your head you know

Koby55 lv esc btw

[Bob O]

What ESC Rahul?

IMO, it would be difficult to draw so much current. I hit 42A (900+ watts) with it a couple of times during some pretty demanding flight. My current limiting is set for 60A in the Castle and I can't imagine hitting even 50A with it.

I was wondering what would cause your ESC to shut down from Low Voltage. Do you mean you reached LVC?

[Rahulgaba]

Actually I was trying to protect it from a crash so the cyclic and collective jammed on the sides .... At that I heard the esc shutdown and the bird fall from 2 ft ..

The esc is koby 55 lv

The thing is I can't understand how to work with atv adjusted .. At 70 percent without atv on koby, I have 3500 rpm with atv it's 3200... I don't know how that's done ...

I have a bec, I am hoping that that I didn't have a brown out now. I have western robotics bec on it.. Same one as you. It flew fine after that for the rest of the battery and another battery too... I took the throttle down from 70 percent to 65. I can try 70 again may be .. What do you think?

I wish I had logs for this like castle lol

[Danny Dugger]

If you have the 10A super mini you shouldn't be able to brown it out. Are all of your ball links and linkages sized properly and operating smoothly/freely?

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[Danny Dugger]

You said you got a low voltage warning from the esc, how long into your flight were you? Sounds like your battery voltage could have dipped too low. (As Bob O said)

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[Rahulgaba]

I didnt get any warning. I just heard the motor cut off.. and it fall ..

Battery wasnt too low as after that I flew 3D with 65percent throttle flat for 2.5 minutes. and landed with plenty left.

I am using Western Robotics 5A High current BEC>

I dont think its 10A.

[Danny Dugger]

Oh ok. You might have browned it out then. Are you running MKS servos? If so you should def get the 10A.

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