Turnigy 120A ESC + Aquacraft UL-1 motor

[Tim_Duggan]

Newbie question here!

Turnigy 120A ESC + Aquacraft UL-1 motor - what should I set the timing and low voltage cut-off per cell to?

Thanks,

Tim

 

[properchopper]

Tim, the stock UL-1 speedy is timed at 11 degrees. I'd program the T-120 to the 11.75 setting. Some have used 15 degrees for more top end but the motor gets hot; 165+ degrees in a sprint. The LVC on the T-180 has a bad habit of overprotecting, most of the guys I run with use NO LVC on the T-180 and T-120; just keep runtimes under control so as not to overdraw the batteries.

 

[Tim_Duggan]

Thanks for the fast reply!

 

[Tim_Duggan]

Ok - another newb question.

After using the programmer to set the timing on the ESC, I connected the UL-1 motor and plugged the ESC into the receiver. I programmed the radio as per the instructions (futaba 4PKS - so throttle reversed and all rates at 100%) and then turned on the TX and held the TX at full throttle while connecting the LiPo. All good. Throttle responds to input, but the motor just sounds completely terrible. I disconnected the coupler and checked that the mounting screws werent too long etc. and I resoldered the bullet connectors in case one was dry. I tried again and it still sound wrong.

Is it possible I have a faulty motor or ESC, or missed something dumb? There is nothing foreign in the motor and it feels normal to turn over by hand. I don't have another brushless motor to connect to and try to rule out anything.

 

[SeanKewley]

Did you give it full throttle without a load on it? I wouldn't recommend doing that. Do a test run in the water and see how that goes first.

 

[Tim_Duggan]

I just gave it a quick blip on the throttle, not a big rev. I know what they sound like from pitting for others, and this sounds nothing like it.

 

[SeanKewley]

Hard to say. Toss it in the water. If it stills sounds bad after a lap, re-investigate.

 

[Tim_Duggan]

I'm just worried I might toast something if it's not right. Might get someone with more FE experience to give it a once over first.

 

[toyotatruckin]

pull the motor apart and physically check the bearings, I bought a used aquacraft engine the seller said was in "great" shape, it spun over fine sure but being me I took it apart and looked over the bearings and sure enough the front one is seized up BUT hey, the shaft was turning smooth (in the bearing race lol)

 

[SeanKewley]

Was the motor previously owned? If so, it is possible that you have a bad bearing or a thrown magnet. If its new I wouldn't bother opening it up. My drive line is noisey out of the water too, but sounds fine when running in the water.

 

[Tim_Duggan]

Thanks for the suggestions guys.

Yeah this motor is new- never seen water. If it has thrown a magnet it would feel lousy to turn over by hand, wouldn't it?

Tim

 

[RodneyPierce]

Thanks for the suggestions guys.

Yeah this motor is new- never seen water. If it has thrown a magnet it would feel lousy to turn over by hand, wouldn't it?

Tim

Tim, im going to assume this is just the motor right? not hooked up to the flex cable/prop shaft? If its just the motor, I would say there is something wrong, if by chance you have it hooked up to the rest, I would disconnect it all, and see how the motor sounds.

 

[Kris Flynn]

Thanks for the suggestions guys.

Yeah this motor is new- never seen water. If it has thrown a magnet it would feel lousy to turn over by hand, wouldn't it?

Tim

Tim, im going to assume this is just the motor right? not hooked up to the flex cable/prop shaft? If its just the motor, I would say there is something wrong, if by chance you have it hooked up to the rest, I would disconnect it all, and see how the motor sounds.

Describe how it sounds Tim, does it stutter? have you got another motor to do a quick test with to test the controller?

 

[Dick Loeb]

Why not just run the UL-1 esc Ive been running the stock one for 2 years and had no problems(tunnel on 4s)50mph+ no heat no problems

 

[Kris Flynn]

it cost more $$ is one reason

On some radios they have a sudden stop when the throttle is let off

Don't get me wrong, I have a few of them andthey work fine, but I also have a turnigy 120 that works fine too

 

[Jeremy Linney]

it cost more $$ is one reason

"On some radios they have a sudden stop when the throttle is let off"

Don't get me wrong, I have a few of them andthey work fine, but I also have a turnigy 120 that works fine too

Is everyone setting there throttle as they would with a nitro or gas motor? Electric motors obviously do not have to idle, so they stop. Therefore you have to use subtrim and trim do dial in correct settings for thottle so that user has to push trigger forward on transmitter to stop motor or you end up with sudden stop(no different than fuel powered engine dying)when letting off throttle.

 

[Dick Loeb]

it cost more $$ is one reason

On some radios they have a sudden stop when the throttle is let off

Don't get me wrong, I have a few of them andthey work fine, but I also have a turnigy 120 that works fine too

Sorry did not mean to but in, its also the legal set up for IMPBA.

 

[Doug Smock]

it cost more $$ is one reason

On some radios they have a sudden stop when the throttle is let off

Don't get me wrong, I have a few of them andthey work fine, but I also have a turnigy 120 that works fine too

Sorry did not mean to but in, its also the legal set up for IMPBA.

Dick that is just in the IMPBA Districts that promote fast, reliable, fool proof, setups that will last a lifetime if treated properly.

See ya next weekend!!

Doug

 

[SeanKewley]

Sorry did not mean to but in, its also the legal set up for IMPBA.

Really? What does this rule say?

 

[Tim_Duggan]

Thanks for the suggestions guys.

Yeah this motor is new- never seen water. If it has thrown a magnet it would feel lousy to turn over by hand, wouldn't it?

Tim

Tim, im going to assume this is just the motor right? not hooked up to the flex cable/prop shaft? If its just the motor, I would say there is something wrong, if by chance you have it hooked up to the rest, I would disconnect it all, and see how the motor sounds.

Describe how it sounds Tim, does it stutter? have you got another motor to do a quick test with to test the controller?

Kris,

Sorry for the late reply, have been without internet for a week. It's a little hard to describe, but I guess it could be a stutter at a very high on/off rate. Sounds harsh and like it's not getting anywhere near unloading fully. Unfortunately I do not have another motor to try, which would tell me straight away if it's motor or ESC. Not such a hurry to get it running now as there wasn't enough entries for EA tunnel at the winter spec for some reason???

Tim