only the upper gear will spin
05-02-2009 | 10:08 AM
#26
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From: NY, NY
RE: only the upper gear will spin
ORIGINAL: OldScaleGuy
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
05-02-2009 | 12:12 PM
#27
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From: Oxnard,
CA
RE: only the upper gear will spin
One thing I typically do is use a receiver battery instead of installing my flight battery. I'm too lazy to unplug and plug wires, even thought it only takes two seconds.
05-02-2009 | 07:55 PM
#28
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From: Markleysburg,
PA
RE: only the upper gear will spin
ORIGINAL: Kevo450
Thats fine for a brushed motor where there is only two wires between the esc and the motor .. but for brushless I was told by an old Electrical Engineering type's ( You know the type .. the guy you go to when you need an epromm programmed ) that the cheaper esc's might have skimped on the isolation circuit and removing one wire isnt enough to be 100% sure that the motor wont start. Something about a sensor motor vs sensor less motor and the stator coil sending a feedback signal and it being picked up out of phase and causing the motor to just spin up to max rpm with ANY throttle input. I really didnt understand it all but the parts I did understand sounded plausible and for me there isnt any downside to unplugging 2 wires .. Worst case is that you have to reverse the motor and I already know the behavior of my heli with the motor reversed so I can detect and correct it easly.
ORIGINAL: OldScaleGuy
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
He told you the truth, I was working on my HK450 today.......I only unplugged one motor wire........all at once there was a squealing noise from the motor, and the blades started turning while I had the pitch gauge on it.
I'm using the Turnigy 30a Plush ESC.
I'll unhook 2 wires from now on.
Don
05-03-2009 | 07:59 AM
#29
My Feedback: (2)
RE: only the upper gear will spin
ORIGINAL: don_87
He told you the truth, I was working on my HK450 today.......I only unplugged one motor wire........all at once there was a squealing noise from the motor, and the blades started turning while I had the pitch gauge on it.
I'm using the Turnigy 30a Plush ESC.
I'll unhook 2 wires from now on.
Don
ORIGINAL: Kevo450
Thats fine for a brushed motor where there is only two wires between the esc and the motor .. but for brushless I was told by an old Electrical Engineering type's ( You know the type .. the guy you go to when you need an epromm programmed ) that the cheaper esc's might have skimped on the isolation circuit and removing one wire isnt enough to be 100% sure that the motor wont start. Something about a sensor motor vs sensor less motor and the stator coil sending a feedback signal and it being picked up out of phase and causing the motor to just spin up to max rpm with ANY throttle input. I really didnt understand it all but the parts I did understand sounded plausible and for me there isnt any downside to unplugging 2 wires .. Worst case is that you have to reverse the motor and I already know the behavior of my heli with the motor reversed so I can detect and correct it easly.
ORIGINAL: OldScaleGuy
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
With the blades off it is easy to confirm correct rotation. Typically, i only unplug one connector between the motor and esc when working on it, taping off the male connector just in case there is some contact. So, it is next to impossible to change rotation direction.
He told you the truth, I was working on my HK450 today.......I only unplugged one motor wire........all at once there was a squealing noise from the motor, and the blades started turning while I had the pitch gauge on it.
I'm using the Turnigy 30a Plush ESC.
I'll unhook 2 wires from now on.
Don
05-04-2009 | 10:22 AM
#30
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From: ERIE ,
PA
RE: only the upper gear will spin
osg that gyro you got from deal extreme is same as xmseller both places sell
gyros that have scratchs on them and look used
lol so i guess dx dont burn you seen at rcg
gyros that have scratchs on them and look used
lol so i guess dx dont burn you seen at rcg
05-05-2009 | 09:48 AM
#31
My Feedback: (2)
RE: only the upper gear will spin
My new one bearing is due to arrive today. I have white lithium and white teflon grease in my shop. Are either of those ok to use on the bearing?
Dude, i have basically written off the gyro and decided to stick with 401's. (at least for now).
Dude, i have basically written off the gyro and decided to stick with 401's. (at least for now).
05-05-2009 | 07:47 PM
#32
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From: NY, NY
RE: only the upper gear will spin
ORIGINAL: OldScaleGuy
My new one bearing is due to arrive today. I have white lithium and white teflon grease in my shop. Are either of those ok to use on the bearing?
Dude, i have basically written off the gyro and decided to stick with 401's. (at least for now).
My new one bearing is due to arrive today. I have white lithium and white teflon grease in my shop. Are either of those ok to use on the bearing?
Dude, i have basically written off the gyro and decided to stick with 401's. (at least for now).
05-15-2009 | 04:45 PM
#33
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From: ERIE ,
PA
RE: only the upper gear will spin
osg do not use grease on a one way bearing use lite oil grease will stop it from doing its one way thing
as a mater of fact i dont not grease any rc bearings just oil
as a mater of fact i dont not grease any rc bearings just oil
05-24-2009 | 09:31 AM
#35
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From: East Syracuse,
NY
RE: only the upper gear will spin
One more word on unplugging 2 motor wires.I was using throttle hold to work on my 450.I didn't catch it but the throttle was reversed on my transmitter.When I plugged in the battery, the blades spun up at full speed.I got whacked on the arm. I had to put 2 butterfly stitches on it and a couple of big bandages.Being on plavax and a full asprine a day, it was nasty.Now I have a 2" scar. My motor now gets unplugged. I don't trust throttle hold.And I had to keep what happened from my wife. <br type="_moz"/>
05-25-2009 | 09:59 AM
#36
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From: St.Louis,
MO
RE: only the upper gear will spin
hey i got it fixed, but i must be the stupidest kid on the rc planet. so i got the new gears with the blue plate on top were the one baring will come out by unscrewing 4 screws.well of course i forgot to put the one way baring shaft in. well dur-da-dur i needed it so ive been out for 1 month for a stupid mistake
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