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Old 12-23-2017, 04:06 PM   #21 (permalink)
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- The tail booms have the same diameter. Stretching a 600 to a 700 is quite popular.
- A 160 HV ESC is more than enough; an 80HV should be sufficient.
- The YGE has active freewheeling, as far as I know. That should allow you to lower the headspeed to the desired one, though I would consider a 10s setup as well.
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Old 01-13-2018, 02:30 PM   #22 (permalink)
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I use the Phoenix Edge 80HV in my 700 size MD500E and even with pretty aggressive flying I don't often approach 80 amps of draw...and its rated for a momentary peak of 120 amps so I agree it would be more than adequate.
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Old 01-15-2018, 07:38 AM   #23 (permalink)
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OK, let me get this thread back on track. I'll post another thread concerning the Trex 600PRO in a 700 size MD500D.

I'm trying to fit a converted Trex 600N in the Long Ranger now. It came w/a belt drive. I ordered a Chaos tt conversion from RC Aerodyne. It hasn't been delivered yet. I'm also waiting on some led lights for the interior.

I changed the motor to a smaller kv rating. It's a Hacker A40-10L ET, 1100kv. I got a 11t pinion to mesh w/a 112t main. The 11t pinion must be used w/the 112t main gear.

So I calculate,
Motor Speed = (Kv * 22.2) * 0.90 = (1100 * 22.2) * 0.90 = 21978 RPM (@ 100%)
Gear Ratio = 112T / 11T = 10.18 :1
Motor Speed / Gear Ratio = Headspeed = 21978 / 10.18 = 2159 RPM (@100%)
If I'm operating the esc at 80%, 2159 x.80 = 1727 RPM, 85% = 1835 RPM.

Sounds like I'm back to square one w/using a CC esc at 80% throttle. So I'm searching for an inexpensive 6s motor now that'll fit the 49mm frame.
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Old 01-15-2018, 01:26 PM   #24 (permalink)
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The problem is that you changed your gear ratio and your motor rating in opposite directions. Your gear ratio got lowered by a factor 11/13=0.846, but your motor kv increased by a factor 0.5*1100/510=1.078 (the factor 0.5 here accounts for 6s vs 12s setup). Everything else being equal, your head speed for the ESC settings only got lowered by 0.846*1.078=0.913.
At least it's the right direction, but you probably should have gone twice as far. A 1000kv motor would have been about right.
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Old 01-15-2018, 02:24 PM   #25 (permalink)
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Quote:
Originally Posted by getsuyoubi View Post
The problem is that you changed your gear ratio and your motor rating in opposite directions. Your gear ratio got lowered by a factor 11/13=0.846, but your motor kv increased by a factor 0.5*1100/510=1.078 (the factor 0.5 here accounts for 6s vs 12s setup). Everything else being equal, your head speed for the ESC settings only got lowered by 0.846*1.078=0.913.
At least it's the right direction, but you probably should have gone twice as far. A 1000kv motor would have been about right.
I saw HK has a Typhoon 880kv motor I was considering. But I think it's too wide for the frame.Is there another manufacturer besides Hacker w/a outrunner in a can? I don't see any can outrunners on the Hacker site. Discontinued?
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Old 01-15-2018, 03:34 PM   #26 (permalink)
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Maybe you can just cut the frame a bit to make room for a larger motor. I don't know the 600N frame, but I guess that should be possible.
With the 600Pro it's a different issue because a larger motor would interfere with the servos, but that's a different setup.
You could also rewind your motor for a lower kv. Maybe someone in the electric motors forum can help you out.
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Old 01-17-2018, 09:59 PM   #27 (permalink)
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It seems I nor the guy I bought my last 600 from didn't research the model throughly. It's actually a 600CF frame, not the 600n. That however works out better because the CF frame closely matches the ESP battery placement. The battery placement designed for this frame may be of no consequence since it's going in the fuse. But I got the 6s setup anyway.

I got the tt conversion for it, but not 100% sure I won't use the tail belt drive.
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Old 01-17-2018, 10:09 PM   #28 (permalink)
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I have a 600CF, and I'm using the belt driven tail. No issues.
You can easily open the frames a little to fit a larger motor in. That's what I did on mine.
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Old 01-29-2018, 11:32 PM   #29 (permalink)
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I bought a SK540 from a guy, but I couldn't program it because the usb port on the gyro kept losing connection, if it made connection at all. The guy I got it from says he's willing to refund my $. I sent him pics and explained what happened. If he follows through as a stand-up guy I'll give him the praise he'll deserve.
So I'll try another deal elsewhere.
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Old 02-15-2018, 09:28 AM   #30 (permalink)
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Got my refund! Xilefchin is a stand up guy. I'd be happy to deal w/him again.

On another note, I got a AR7200BX for this model. Going through the programming mode now..
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