Motors Swapped to T-Motor 2216-12 800kV

[RichWest]

Overall the PA29/30's seem true, but you may need to inspect the machining of the holes both top and bottom. I bought one extra pair, so I was able to cull a PA for a better one. Could have been from a previous production run for why one was "off".

On another note, I reamed my APC props out to allow them to seat fully to the base of the PA. I think it's a better fit overall, threading extends past the nut and the prop sits lower. I would assume this is how they should be applied, APC did confirm that it wasn't an issue to ream (10mm???) and would likely work better than an adapter ring. The props remove as easily as they install.

 

[Nerius]

Whats a difference between T-Motors 2216-11 and 2216-12 (both 800kV) ? Could not find any info on Internet.

 

[RolandS888]

Whats a difference between T-Motors 2216-11 and 2216-12 (both 800kV) ? Could not find any info on Internet.

@Nerius the 2216-11 is 900kv, the 2216-12 is 800kv.
The 11 or 12 is the amount of winding turns per phase, less turns equals higher rpm per volt (kv)

 

[Nerius]

@Nerius the 2216-11 is 900kv, the 2216-12 is 800kv.
The 11 or 12 is the amount of winding turns per phase, less turns equals higher rpm per volt (kv)

Thank you @RolandS888 : seems wrong photo on ebay page I was looked at. This one:
T-Motor MT2216 v2 800KV Brushless Tiger Motor 3S-4S Multicopter Quadro Okto Hexa

 

[PdxSteve]

I bought mine from here for $40/ea USD. T-Motor PROFESSIONAL SERIES MOTOR MT2216, 800KV, V2.0 - TMOATM07029

 

[MIA]

These are the Boca Bearing P/N's for SEALED bearings: SR2-LL/C3C and SR2-5UU3. I apologize for the previous P/N/s but these are correct for sealed bearings. They will run you about $16 per pair,,but to me they were worth it as a bearing failure in flight,,well, guess I don't need to elaborate.

Boca Bearing Company :: Ceramic Bearing Specialists

SR2-LL/C3C isnt a good number I just tried searching on boccas sight. the sr2-5uu3 comes up but not the sr2-ll/c3c. Did they change the part number. thanks in advance

 

[Nerius]

SR2-LL/C3C isnt a good number I just tried searching on boccas sight. the sr2-5uu3 comes up but not the sr2-ll/c3c. Did they change the part number. thanks in advance

Someone kindly told correct bearings p/n's, but don't remember who:
---
Bearings for 3DR Solo motors are:

Boca Bearing P/N's for SEALED bearings:
SR2-LL/C3#3 and SR2-5UU#3.

Top and bottom bearings.
---

 

[MIA]

Someone kindly told correct bearings p/n's, but don't remember who:
---
Bearings for 3DR Solo motors are:

Boca Bearing P/N's for SEALED bearings:
SR2-LL/C3#3 and SR2-5UU#3.

Top and bottom bearings.
---

thanks that worked

 

[SteveReno]

Quick question,
If pod fails, Generally/Normally due to bearing going bad?

 

[Nerius]

Quick question,
If pod fails, Generally/Normally due to bearing going bad?

It's from my expierence: bird will drop, but not necessary like a rock: if bearing will be stuck then motor will stop, but if bearing still partially works with some increased resistance and loosiness then Solo will try to increase torque and maintain stability and this will lead to very quick "hard landing". One of my Solo motor pods failed recently and it was some kind of hard landing, not "drop like a rock". I even made short test flight after failure.

 

[SteveReno]

It's from my expierence: bird will drop, but not necessary like a rock: if bearing will be stuck then motor will stop, but if bearing still partially works with some increased resistance and loosiness then Solo will try to increase torque and maintain stability and this will lead to very quick "hard landing". One of my Solo motor pods failed recently and it was some kind of hard landing, not "drop like a rock". I even made short test flight after failure.

So did you examined the bearings?

 

[Del]

I just received my Boca Bearing in the mail today for my Solo Motor Pod..
I ordered 1 set....but I couldint believe the size of the envelope it came in!! I really thought they might of sent me a free shirt or something...But Nope....Just one Set of Bearings.

 

[Nerius]

So did you examined the bearings?

Yes. One motor has some loosiness, clear noise and becomes warmer than others, another sounds a little bit different than others when running, and logs showed significantlly increased power consumption during Solo fall, so I think it's 90% bearings problem. And this is after less than 6 hours of total flight time [emoji16]. 3DR told from logs one motor failed, so another motor failure can be impact from crash, because Solo flipped over. They agreed to replace both motor pods under warranty, so awaiting for replacement. Will see what to do next.

 

[SteveReno]

So, Abnormal Motor temps, Noise & Power consumption.
All good info. I guess the least one can do is go thur logs Via MP once a month & compare values with Temps, Vibs Power usage.
Logical that Bearings go first. Must replace as soon as problems start showing.
Does MP show Pod/Motor temps?


Glad 3DR replace your Motors
Anyway thank you for your reply & info.

 

[SteveReno]

View attachment 2448 I just received my Boca Bearing in the mail today for my Solo Motor Pod..
I ordered 1 set....but I couldint believe the size of the envelope it came in!! I really thought they might of sent me a free shirt or something...But Nope....Just one Set of Bearings.

Hi Del, let us know how the install goes & final test flight.

Thanks

 

[Nerius]

I would like to ask @RolandS888 : after some test time passed now, how is yours experience with T-motors MT2216 800KV motors on Solo?
Any problems you did not seen at first, or some things you don't like regarding motors change?

 

[RichWest]

I used the APC props exclusively today and I saw little change in overall power performance, totally subjective however. Battery drain was near or more than normal, lots of hovering.

Not sure if it's the motors, props or both, but the bird's agility seems tight or even precise. Stock motors and props were similar, but this new setup seems tighter. Yaw control was surgical and responsive, even in 10+ mph winds.

Motors are far better than stock. They run smooth through the full power band, never experienced any pulsing in full throttle or ascent. Overall vibration was reduced and was noticeably less for micro vibes. Neither were gone however, just reduced from my balanced stock pods. I have not balanced these new motors...

Will be using the Solo props tomorrow. I'll see if Roland's machine is right, Solo props perform better....???

Now I'm curious what performance difference and/or battery life the 900kV motors would offer. My goal is to have a greater payload than just a gimbal and GP.

FWIW, My gimbal has about a 1 oz. of mod'ing and I am carry about 4oz. of weight at the rear of the bird as well. I've been flying heavier than stock for about 10 weeks now. My battery performance is in the 13-15 minute range prior to motor change, at 25% BAT on the ground.. Again battery time is subjective, I leave my batteries charged for the week and may start with a 85-93% at lift-off.

 

[RolandS888]

I would like to ask @RolandS888 : after some test time passed now, how is yours experience with T-motors MT2216 800KV motors on Solo?
Any problems you did not seen at first, or some things you don't like regarding motors change?

@Nerius I am totally happy with the motor change and haven't come across any unforeseen issues.
My main brief at the start of this was vibe reduction and reliability. I didn't like the noise coming from the stock motors after about 5 hours of use and set out to change to a more reliable option.
I feel I have satisfied what I set out to achieve.
The silver top T-motors out of the box are smoother than the stock motors, and the T-motors have proven themselves reliable to me over the past couple of years of use (I have dozens in various copters hanging on the walls around me) so I like them a lot.

I have flown with the 10x45 APC props, I like them, but will do more flights with them soon. The rigidity of the APC turned me back to the stock props that are a good design (quite efficient) and the blade softness damps out flight corrections without sacrificing lift, unlike some others I have tried.
Looks like @RichWest is going in depth with the prop testing, and I'm interested to read his results.
I have another brand of prop I will be trying soon too.

The only change I made was swapping out the PA29/30 prop adapters for the short TBS prop adapters which are a perfect match for the stock Solo props.
And I got fussy and have balanced the motors (minimal correction needed) and balanced and rebalanced the stock props, just to try and reduce any out of balance to as low as possible.

If I was going to change motors on another Solo, I'd do it all exactly the same again, Im very happy with the result. Smooth, quiet, reliable, that's all I wanted. Now I have that.
Thanks for asking.

 

[Nerius]

@Nerius I am totally happy with the motor change and haven't come across any unforeseen issues.
My main brief at the start of this was vibe reduction and reliability. I didn't like the noise coming from the stock motors after about 5 hours of use and set out to change to a more reliable option.
I feel I have satisfied what I set out to achieve.
The silver top T-motors out of the box are smoother than the stock motors, and the T-motors have proven themselves reliable to me over the past couple of years of use (I have dozens in various copters hanging on the walls around me) so I like them a lot.

I have flown with the 10x45 APC props, I like them, but will do more flights with them soon. The rigidity of the APC turned me back to the stock props that are a good design (quite efficient) and the blade softness damps out flight corrections without sacrificing lift, unlike some others I have tried.
Looks like @RichWest is going in depth with the prop testing, and I'm interested to read his results.
I have another brand of prop I will be trying soon too.

The only change I made was swapping out the PA29/30 prop adapters for the short TBS prop adapters which are a perfect match for the stock Solo props.
And I got fussy and have balanced the motors (minimal correction needed) and balanced and rebalanced the stock props, just to try and reduce any out of balance to as low as possible.

If I was going to change motors on another Solo, I'd do it all exactly the same again, Im very happy with the result. Smooth, quiet, reliable, that's all I wanted. Now I have that.
Thanks for asking.

Thank you very much for yours comprehensive explanation.

 

[RichWest]

Looks like @RichWest is going in depth with the prop testing, and I'm interested to read his results.

Not really any depth from me, I'm after the same as you - quality motors et.al. reasons. I have very little experience in choosing motors versus props, I adapt my flying style to how the package dictates. Anything I say in regards to the motors and props is subjective and without years of experience. I'm a rookie MR mechanic with soldering skills...nothing more.

Not "selling" on any ideas for why, just sharing my subjective results... Besides, I'm tired of worrying about motors or bearings failing. I got other things to mess with on the bird.