8 T-Motor 4120 400KV

[hjls3]

Like the title says - 8 T-Motor 4120 400KV - super reliable big rig motors - bearings in excellent shape, motors working GREAT - 625$ shipped USA buyer pays PP fees.

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[hjls3]

OK OK - 575 shipped i USA - OR ill be forced too build another big rig

 

[benc]

Do you still have these ? I need 2 but I can do 4 also.

 

[hjls3]

Yep I have 4 left - Ill sell em for 275$ shipped in USA - PP me tonight and they'll be in mail tomorrow. Cheers

 

[benc]

are they all in working condition ? and there is no broken wind copper wires? also how many hours were they used?

Yep I have 4 left - Ill sell em for 275$ shipped in USA - PP me tonight and they'll be in mail tomorrow. Cheers

 

[hjls3]

They are in great shape - work awesome - I currently have two other rigs with these motors. These motors were on back up rig - not sure of exact hours on them - rig was test flown and used on two projects - Id estimate less than 5 hours of flight. They have been off that backup rig since December. Just sitting in my shop.

 

[benc]

i'll let you know in a few days.. on one of my motor the copper wind wire broke off, is less than a year old.. so i want to see if there a warranty replacement for it, before i go for this deal. ( no wonder, when i fly my x8, this motor just stopped in mid air )

 

[benc]

have a quick question, what esc do you use on these motors?

They are in great shape - work awesome - I currently have two other rigs with these motors. These motors were on back up rig - not sure of exact hours on them - rig was test flown and used on two projects - Id estimate less than 5 hours of flight. They have been off that backup rig since December. Just sitting in my shop.

 

[hjls3]

I use the T-Motor ESCs -

 

[benc]

what was the amps? and was it using 6s cells?

I use the T-Motor ESCs -

 

[hjls3]

yep 6s i have 60 but that is way overkill (I live at very high altitude and often will have left stick full forward ) - I did have a successful setup using may tech 45 amp a while ago - never gave me any probs but for consistency switched everything to t-motor -

 

[benc]

Reason I ask isthat I was using theeCal,and no matter what I do, using 6s with 40-45-50 esc, I tehn to get heating issues or not enought "C" or over"c" rating issue.

 

[hjls3]

What's your AUW? I'm lifting a movi and red w these motors on octo at 10k ASL with no issues at all. What size prop you spinning too?

 

[benc]

I using 16" props, and only thing I'm lifting is a gopro, I'm at x8 configuration

 

[hjls3]

I would guess then something is entered into ecalc wrong. 16!inch prop on 6s gives you 1570 grams thrust at 50% throttle drawing 8.4 amps - so 8 of them at 50% your lifting 27 lbs.

 

[hjls3]

you'll give up a small bit in coax x8 config but you should be more than OK -

 

[benc]

Thx,guess I'll try again.

you'll give up a small bit in coax x8 config but you should be more than OK -