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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › EVO-P2 Servos???
12-19-2017 03:54 PM  8 months agoPost 21
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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Pistol Pete
Waiting on someone to post and say..."hey, those servo are exactly like (_?_)"

Great move on opening to inspect and thanks for sharing.
Thanks for sharing

spending time, paying attention

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01-11-2018 11:33 AM  7 months agoPost 22
Richardmid1

rrProfessor

Leeds, England

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Review on Amazon:
the product was great until just recently. it tries to continuously turn to one side. even when it stops it make a scream sound like a servo is still trying to turn.
other than above problem the 1wk or so, I was using it .the servo had enuff torque to snap a servo arm and moves very fast.
if the product was a little more durable it would be fine but I could have just got a defect also.
I would use this servo as a car steering servo as the reviewer did but nothing else.

Stick with Futaba, they are 3 times the price but WILL last 3 times as long if not more.

60% of the time, it works every time!

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01-11-2018 01:20 PM  7 months agoPost 23
JuanRodriguez

rrProfessor

The Villages, Florida

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Has there been any resolution to the return issue ??

Been there, done that and old enough to know better.....

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01-13-2018 03:07 PM  7 months agoPost 24
wjvail

rrKey Veteran

Meridian, Mississippi

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Has there been any resolution to the return issue ??
Short answer - no. I wrote the seller asking if there was a solution that wouldn't result in 4 servos I can't use sitting on my workbench and he with feedback that he doesn't need. I suggested that simply excepting a return would be a win/win for both of us. Not excepting a return would be a lose/lose.

His response was "I understand that you want to leave negative feedback, but that is unfair since my return policy was clearly stated in my listings. Also, eBay will remove the negative feedback since I have not violated any of their policies, and have clearly listed my return policy. Please review my listing and return policy and let me know what caused you to buy these by mistake."

He chose the lose/lose option.

I responded that I was disappointed in his decision to not accept a return and explained to him why I would not be able to use his servos. The explanation largely mirrored what I posted here. I haven't heard from him since.

My interest in retuning these faded when he told me my poor feedback would be removed. I did leave poor feedback and after several weeks, it is still posted on eBay.

I consider this closed. I enjoyed the experience and learned something.

I should mention that I spent over $3,000 on servos last year and sitting right next to the servos discussed in this thread is a complete and unopened set of 5, MKS X8 servos. I don't need cheep servos. This was a simple experiment to explore what is available. My initial hope was to find someone here on RR (or anywhere) that had used these and be able to offer some impressions. Baring that, I would be happy to take on the job. I would be happy to buy some and report what I find.

Finally, I should add, I have never installed these servos. I have NO practical experience with them. These may be the perfect servo for your next build. I am only passing on what I have personally found.

"Well, Nothing bad can happen now."

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01-13-2018 11:50 PM  7 months agoPost 25
JuanRodriguez

rrProfessor

The Villages, Florida

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Seeing that you're "stuck" with them (or so it seems) why not go forth with your experiment and use them ?? Not on anything expensive but on something where you can give them a good workout ..... They may turn out to be the next best thing since sliced bread .......

Been there, done that and old enough to know better.....

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01-14-2018 03:07 PM  7 months agoPost 26
wjvail

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Meridian, Mississippi

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Seeing that you're "stuck" with them (or so it seems) why not go forth with your experiment and use them ?? Not on anything expensive but on something where you can give them a good workout ..... They may turn out to be the next best thing since sliced bread .......
Hey Juan. That is exactly my plan. Great minds think alike. But there is this... I don't know what to put them in and it's not as easy as it first appears.

My early testing with these servos suggests that they are not only High Voltage capable, they are HV required. That immediately means I need a HV receiver.

And what would you put them in if you believed there is a better than average likelihood of failure? What could I put them in that give them a good testing that I could tolerate a failure in? A cheep 40 trainer comes to mind, and I have one of those, but I still don't want to see it disappear over the horizon or spin in with a dead servo. And could a 40 trainer give 400+ oz*in servo a reasonable test? Would I learn anything by putting these in something as tame as a 4 pound fixed wing airplane? Not much of a test, right?

I may resell these. I may give them away. I may install them in something. If I do something with them I'll post here. Right now I have other projects to play with. Did I mention I have a new set of MKSs looking for a home?

Bill

"Well, Nothing bad can happen now."

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01-14-2018 03:47 PM  7 months agoPost 27
JuanRodriguez

rrProfessor

The Villages, Florida

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wjvail
My early testing with these servos suggests that they are not only High Voltage capable, they are HV required. That immediately means I need a HV receiver.
High voltage receiver ?? I thought that most receivers today have a pretty good voltage operating range .... for example, the XPS 6 channel Nano receiver can operate from 1.8V - 16 V. Check the specs for the receivers you own to see what the specs are....

For testing, what about making up some sort of a "test stand" where you can cycle the servos under a pretty decent load ?? May not be practical or worth your time at this point but just a thought that came to mind....

Been there, done that and old enough to know better.....

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01-14-2018 04:10 PM  7 months agoPost 28
wjvail

rrKey Veteran

Meridian, Mississippi

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I fly a lot of Futaba receivers. As it happens I currently have a R617FS sitting on the bench unused. It would be a likely candidate for testing. Unfortunately it is rated 4.8 to 6 volts. I suppose it is just an unfortunate coincidence that the receiver I happen to have most available is a also an older legacy receiver that is not rated for unregulated 2S power.

Obviously not something that can't be fixed. It'll just take another UPS visit to overcome.

"Well, Nothing bad can happen now."

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01-14-2018 04:44 PM  7 months agoPost 29
Dyehard

rrVeteran

Cedar Bluff, Va.

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wjvail, I went through this a few years ago. I asked on the forums about using a 617FS in a airplane on HV and some said that it would absolutely not work as the receiver is only rated by Futaba for 4.8 volts. Other said they had used them on HV with no problems at all. I did quite a bit of searching and finally found a post by Bax at Futaba US where he said that the 617FS would work on a two cell lipo pack, that the only reason Futaba rated at 4.8 volts was that the servos that most people would use with that receiver would be rated at 4.8 volts. I put a 617FS in a YouCanDo 3D with a Saito 100 in it with high voltage rated servos and a Glacier 3600 mill 2 cell lipo as the power pack. I've been flying it for two or three years now with no problems.

I know this is anecdotal but is has worked for me and I'm not the least bit afraid of using the 617FS on a two cell lipo.

Allen Dye

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01-15-2018 01:36 AM  7 months agoPost 30
pH7

rrKey Veteran

Sterling Heights, MI - USA

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If you have an iCharger, you can use it to exercise the servos with a lot of control over the operating parameters. That way you don't even need a receiver at all. Maybe other chargers have the same feature, but I know the iCharger does.

Phil Heavin

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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › EVO-P2 Servos???
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