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nynextel88 · 10-11-2016, 11:00 AM

Very nice work.

brainstain · 10-14-2016, 01:43 PM

sub'd

The_crack_fox · 11-02-2016, 04:44 AM

I'm using the motor in the link below in this heli. The heli has a 5.65/1 belt ratio and 6S 2650Mah 40c battery. With no blades fitted the head tachs at 3200rpm. Throttle curve is a flat 100%

https://hobbyking.com/en_us/turnigy-...runner-v2.html

It flies great. It sounds like its spinning the 425mm blades pretty fast but I'm unable to measure the head speed in flight.

The problem I'm having is that it bogs real easy. I've tried gearing up and down, changing max pitch, esc timing settings... I just cant get any worthwhile power out of it.

It doesn't even heat up that much. Even the esc stayed cool until I set the timing to max (30deg). It may have performed a tiny bit better but still nowhere near as good as my old trex500 with the align 1600kv motor.

Maybe this motor is junk? Can anyone think of something else to try before I spend a stack of money on a scorpion motor?

MGPTWEGB · 11-05-2016, 01:11 PM

check the timing your using on your ESC....

with that tail gear ratio you have a low head speed heli..... Nice

The_crack_fox · 11-26-2016, 07:18 AM

I changed the motor to an Emax 3520 1125Kv and swapped the 16t motor pulley to a 14t. Wow! What a difference! Now I'm getting 3100rpm with the HW V3 governor at 80%. No bogging and super snappy performance.

I may have spun it to fast though. It developed a small vibration which quickly escalated to a bad vibration. Then the rudder control link broke off

Damage isn't to bad, She'll be back in the air soon enough.

I think the vibration might have been caused by slightly bent tail rotor hub. Its impossible to tell if it was bent before or after the crash. It really is very important to check EVERYTHING after a heli takes a hit. At 2600rpm a slight bend in something doesn't cause a problem, but spin the crap out of it and things go bad.

10-11-2016, 11:00 AM	#21 (permalink)
nynextel88 Registered Users Join Date: Jan 2010	Very nice work. __________________ Team Align / Enterprise Hobby Facebook Align Part Finder Thunder Power RC

10-14-2016, 01:43 PM	#22 (permalink)
brainstain Registered Users Join Date: Apr 2013	awesome sub'd __________________ I don't crash much, but when i do.... T-Rex 450 pro dfc Scorpion 2221-8, 7200BX 450 pro dfc 360 NTM 1700kv/HB800

11-02-2016, 04:44 AM	#23 (permalink)
The_crack_fox Registered Users Thread Starter Join Date: Jun 2016	I'm using the motor in the link below in this heli. The heli has a 5.65/1 belt ratio and 6S 2650Mah 40c battery. With no blades fitted the head tachs at 3200rpm. Throttle curve is a flat 100% https://hobbyking.com/en_us/turnigy-...runner-v2.html It flies great. It sounds like its spinning the 425mm blades pretty fast but I'm unable to measure the head speed in flight. The problem I'm having is that it bogs real easy. I've tried gearing up and down, changing max pitch, esc timing settings... I just cant get any worthwhile power out of it. It doesn't even heat up that much. Even the esc stayed cool until I set the timing to max (30deg). It may have performed a tiny bit better but still nowhere near as good as my old trex500 with the align 1600kv motor. Maybe this motor is junk? Can anyone think of something else to try before I spend a stack of money on a scorpion motor? Last edited by The_crack_fox; 11-02-2016 at 04:53 AM.. Reason: dumb fingers

11-05-2016, 01:11 PM	#24 (permalink)
MGPTWEGB Registered Users Join Date: Jan 2014	check the timing your using on your ESC.... with that tail gear ratio you have a low head speed heli..... Nice __________________ KDS Agile 6.4 Proto-Type 750MX 12s with an Ikon / KDS Agile 7.2 / Tarot-Align 600CF-FBL Robird G31 12S / The First X3-385 FROM AUTO-CAD to DIRT NAP in 10 SECONDS !

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11-26-2016, 07:18 AM	#25 (permalink)
The_crack_fox Registered Users Thread Starter Join Date: Jun 2016	I changed the motor to an Emax 3520 1125Kv and swapped the 16t motor pulley to a 14t. Wow! What a difference! Now I'm getting 3100rpm with the HW V3 governor at 80%. No bogging and super snappy performance. I may have spun it to fast though. It developed a small vibration which quickly escalated to a bad vibration. Then the rudder control link broke off Damage isn't to bad, She'll be back in the air soon enough. I think the vibration might have been caused by slightly bent tail rotor hub. Its impossible to tell if it was bent before or after the crash. It really is very important to check EVERYTHING after a heli takes a hit. At 2600rpm a slight bend in something doesn't cause a problem, but spin the crap out of it and things go bad.

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