Revolt RV-series motor review and comparisons

Electric Motors and Controllers
larsb   1 MW

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Re: Revolt RV-series motor review and comparisons

Post by larsb » Jan 26 2020 2:44am

I can say that some things were interesting in this thread, one example was noload current between two powervelocity controllers was something like 50% higher with the same motor. Was that measurement correct, based on dc volts * dc amps and measured with a good DMM?
If so, then one of these controllers is a crappy match for the tested motor and this is (if correct) interesting. It then makes all noload testing become questionable as well as the quality of the controller.
Answering this question would improve the thread a lot since the noload current is used to estimate iron losses.

The large efforts to add extra bell reinforcements are not needed if there’s a really tight grip fit to the shaft like in my two RV120pro motors. It is hard to move even with a three jaw puller.
It would be good for others to know how this is for the different motors, and all the other basic data, presented as a table.

You know, all data:
verified noload currents@2 voltages &stated rpms
Lamination thickness
True kV
phase-phase resistance
Wye or delta
grip or no grip fit shaft to bell
verified weights
Copper fill factor where you have this.

Since the overall quality is so poor then the motors can be considered as diy stator-rotor kits for the happy motor winder - they might be OK for this use, at least for the 0.3mm lamination ones..
Ride on!

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madin88   1 GW

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Re: Revolt RV-series motor review and comparisons

Post by madin88 » Jan 26 2020 8:30am

John in CR wrote:
Jan 24 2020 8:49pm
thepronghorn wrote:
Jan 24 2020 8:30pm
...Maybe I should stop spreading the myth that peak efficiency is when copper and iron losses are equal...
Why are you calling it a myth? As long as you add "for a given voltage" it's true AFAIC and I proved it to myself with a quick bit of trial and error using the spreadsheet.
Thanks for pointing out the relationship with voltage. Makes sense.


ElectricGod, it was mentioned by a number of people that your calculation of V batt x A phase isn't meaningful for anything and incorrect.
But yet you try to defend this statement to be informativ:

viewtopic.php?f=31&t=75494&start=1075#p1524497

Could it be that you overlooked the messages from here, or do you still have trouble to understand the relationship between DC and AC?

John in CR   100 GW

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Re: Revolt RV-series motor review and comparisons

Post by John in CR » Jan 26 2020 10:56am

Wouldn't it be pretty simple to get an idea of the impact of the skirt bearing on losses by feeling it or using an IR thermometer?

John in CR   100 GW

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Re: Revolt RV-series motor review and comparisons

Post by John in CR » Jan 26 2020 11:27am

ElectricGod wrote:
Jan 25 2020 4:54pm
JOHN IN CR AND LARSB:
FYI...MAKE DISPARAGING COMMENTS AND I REPORT YOU!!!

WHILE HAVING DONE NOTHING TO EITHER OF YOU...YOU INSIST ON MAKING NEGATIVE COMMENTS!
I HAVE TRIED MULTIPLE TIMES WITH BOTH OF YOU TO MAKE PEACE!
I AM SOOOO UTTERLY TIRED OF YOUR BULLSHIT AND ARROGANCE!

I WISH THE MODERATORS WOULD CLOSE DOWN YOUR ACCOUNTS AND PUNISH YOU FOR YOUR CRAP!!!

LARSB YOU HAVE BEEN TROLLING ME FOR YEARS!!!
JOHN...YOU HAVE MADE PERSONAL THREATS AGAINST ME MULTIPLE TIMES!!!
BOTH OF YOU HAVE RESORTED TO PETTY NAME CALLING AND PERSONAL ATTACKS DOZENS OF TIMES EACH!!!


STAY ON TOPIC!!!
STOP ATTACKING ME!!!
TREAT ME LIKE YOU WANT ME TO TREAT YOU!!!
BE CIVIL, BE POLITE, BE COURTEOUS, BE RESPECTFUL!!!
Quoted for the record.

Please point out examples, because the only disparaging comments are yours, and be specific. Where are these attacks, name calling, and threats? Hell, I even held back from calling you ElectricTrump, which would have been stirring the pot, but not an attack or name calling...only making light of the name you said was sarcastic and witty.

Acting like a toddler and throwing a tantrum isn't going to work for you this time, and while most are trying the "ignore it and hope it will go away" approach, past experience with you has shown that to be ineffective, so I'm calling you out. They are your words, so step up and be a man...either defend them with coherent arguments or retract them.

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ElectricGod   1 GW

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Re: Revolt RV-series motor review and comparisons

Post by ElectricGod » Jan 26 2020 12:17pm


The moderators have refused to take action against these people:
LARSB, Madden88, Punx0r and John in CR.

Their many personal attacks has completely ruined this thread.
It has ruined my desire to help the world by presenting things!
This thread has been locked and edited at least 8 times now!!!
ALL to get rid of their hate!

I 100% recuse myself from any further posts!
I have deleted all my content.
Now there is nothing but a few quotes.
There is almost zero actual content!

I apologize to the people that got benefit from my efforts.
I apologize to the future people who would benefit from my efforts.

I will NOT tolerate being attacked!

99.9% of the content ever posted in this thread is my own work!!!
My time and efforts!!!
My money spent!!!

Congratulations moderators on being absolutely toothless!!!
You have forced me to take matters into my own hands!!!
I have been MORE Than patient with your LACK of action!!!

I have only one question for the moderators:

Which do you want?
1. Quality content provided by people that care.
2. Assholes that ruin everything.

Deal with the assholes or my quality content goes away!!!
Just like it did in this thread!!!
NOW THEN F U C K I N G CHOOSE!!!
I didn't get a gigawatt rating by thrashing people!
I got it the legitimate way!
Posting worthwhile and valuable content!!!
Like I have stridently tried to keep in this thread!!!

Last edited by ElectricGod on Jan 26 2020 4:05pm, edited 14 times in total.
XB-502: viewtopic.php?f=10&t=83302&p=1222730#p1222730

Currie scooter: viewtopic.php?f=35&t=83830&p=1227407#p1227407

Benjamin Franklin - "Any fool can criticize, condemn and complain and most fools do."

larsb   1 MW

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Re: Revolt RV-series motor review and comparisons

Post by larsb » Jan 26 2020 12:54pm

No, not running you out of your own thread.
Could it be that you overlooked the messages from here, or do you still have trouble to understand the relationship between DC and AC?
If you care to answer this, then you’ll know we’re not ”attacking”.
Ride on!

John in CR   100 GW

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Re: Revolt RV-series motor review and comparisons

Post by John in CR » Jan 26 2020 3:24pm

ElectricGod wrote:
Jan 26 2020 12:17pm

You have forced me to take matters into my own hands!!!
Is throwing a tantrum and stomping away taking your toys with you an adult way to "take matters into [your] own hands"?

larsb   1 MW

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Re: Revolt RV-series motor review and comparisons

Post by larsb » Jan 26 2020 4:59pm

ElectricGod wrote:
Jan 26 2020 12:17pm
The moderators have refused to take action against these people:
LARSB, Madden88, Punx0r and John in CR.

Their many personal attacks has completely ruined this thread.
It has ruined my desire to help the world by presenting things!
This thread has been locked and edited at least 8 times now!!!
ALL to get rid of their hate!

I 100% recuse myself from any further posts!
I have deleted all my content.
Now there is nothing but a few quotes.
There is almost zero actual content!

I apologize to the people that got benefit from my efforts.
I apologize to the future people who would benefit from my efforts.

I will NOT tolerate being attacked!

99.9% of the content ever posted in this thread is my own work!!!
My time and efforts!!!
My money spent!!!

Congratulations moderators on being absolutely toothless!!!
You have forced me to take matters into my own hands!!!
I have been MORE Than patient with your LACK of action!!!

I have only one question for the moderators:

Which do you want?
1. Quality content provided by people that care.
2. Assholes that ruin everything.

Deal with the assholes or my quality content goes away!!!
Just like it did in this thread!!!
NOW THEN F U C K I N G CHOOSE!!!
I didn't get a gigawatt rating by thrashing people!
I got it the legitimate way!
Posting worthwhile and valuable content!!!
Like I have stridently tried to keep in this thread!!!
The worst thing is someone dead wrong that sounds like he knows what he’s talking about. We’re all that guy sometimes.. but most of us learn and can correct our mistakes. Not you, evidently, and it kills the quality of that gigawatt of material.
Ride on!

John in CR   100 GW

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Re: Revolt RV-series motor review and comparisons

Post by John in CR » Jan 26 2020 7:28pm

I agree Larsb. Sharing incorrect info is a negative contribution. We're all here to learn and share. If you get it wrong then you've gotta be adult enough to handle being corrected without making a scene. If I'm wrong about something I want to be corrected, because I don't want to pass along bad info. That includes if anyone else thinks my posts prior to the outburst were any kind of attack, since I honestly don't think so. Here or by PM is fine to let me know what you think.

Anyone running a no-load comparison with a Nucular controller needs to know that the battery current on the display shouldn't be relied upon. With Nuc's battery current is only a calculated estimate based on the measured phase current, so use a separate device to measure no-load current directly from the battery.

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amberwolf   100 GW

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Re: Revolt RV-series motor review and comparisons

Post by amberwolf » Jan 26 2020 11:57pm

self-deletion tantrums only hurt everyone except the people the tantrums are supposedly about.

i never understand people that do this, but every one that i've seen happen here over the years has done things about the same way--when they don't get their way, whatever that is, they hurt everyone except the people they're trying to, and disappear.

the ignore feature is there for a reason.


(and this self-deletion tantrum gives me one more to add to mine :( ).

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sn0wchyld   1 MW

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Re: Revolt RV-series motor review and comparisons

Post by sn0wchyld » Jan 27 2020 6:02am

ElectricGod wrote:
Jan 26 2020 12:17pm

The moderators have refused to take action against these people:
LARSB, Madden88, Punx0r and John in CR.

Their many personal attacks has completely ruined this thread.
It has ruined my desire to help the world by presenting things!
This thread has been locked and edited at least 8 times now!!!
ALL to get rid of their hate!

I 100% recuse myself from any further posts!
I have deleted all my content.
Now there is nothing but a few quotes.
There is almost zero actual content!

I apologize to the people that got benefit from my efforts.
I apologize to the future people who would benefit from my efforts.

I will NOT tolerate being attacked!

99.9% of the content ever posted in this thread is my own work!!!
My time and efforts!!!
My money spent!!!

Congratulations moderators on being absolutely toothless!!!
You have forced me to take matters into my own hands!!!
I have been MORE Than patient with your LACK of action!!!

I have only one question for the moderators:

Which do you want?
1. Quality content provided by people that care.
2. Assholes that ruin everything.

Deal with the assholes or my quality content goes away!!!
Just like it did in this thread!!!
NOW THEN F U C K I N G CHOOSE!!!
I didn't get a gigawatt rating by thrashing people!
I got it the legitimate way!
Posting worthwhile and valuable content!!!
Like I have stridently tried to keep in this thread!!!



Pathetic.

I tried mate (as did others), going out of my way to be polite about it in an effort to cut through this kind of crap and actually bring about some positive change... but I'll never try again. Enjoy your echo chamber. The only response I'll give to you from now on is to correct your misinformation from misleading others. Complain about that if you want, because as evidenced here, your opinion on such 'problems' has 0 value.

Of particular note in my making such a decision:

ElectricGod wrote:
Jan 26 2020 12:17pm

This thread has been locked and edited at least 8 times now!!!
ALL to get rid of their hate!
right before:
ElectricGod wrote:
Jan 26 2020 12:17pm

Congratulations moderators on being absolutely toothless!!!
You have forced me to take matters into my own hands!!!
I have been MORE Than patient with your LACK of action!!!
You cant even keep it straight for a single post bub. To bad, you had some genuine good info/efforts to contribute, and you burnt it all yourself, because of some 'perceived' and as yet unidentified 'insults' that even if true, you simply couldn't just get over. Perhaps its finally time for some self reflection on the binary choice that either everyone else is wrong, or just you are. Weight of numbers doesn't guarantee correctness, but it should at least prompt the aforementioned self reflection... I wont however, be holding my breath. ciao.

Rube   100 W

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Re: Revolt RV-series motor review and comparisons

Post by Rube » Jan 28 2020 5:15am

Snowy nailed it, many knowledgeable, considerate and long term forum posters tried to help; generously donated time and knowledge, but here we are with bold red letters blaming all who seek a discourse, truth, evidence, and peer review. Please accept constructive comments, this shared knowledge is just as valuable as motor and controller teardowns. APL's motor thread is a shining example of what can be achieved

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