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-   -   JR servos bad? (https://www.rctech.net/forum/radio-electronics/409058-jr-servos-bad.html)

whatsitallworth 06-17-2010 04:42 PM

JR servos bad?
 
so I just finished buying a setup for my car, same one I had in it when I ran it almost 2 years ago!!

I bought:

Spektrum dx3.0 remote
SR3000 receiver

JR 9100T for steering
JR 9100S for throttle

just spend nearly 300$ on it all and now I just read the "baddest servo ever" thread.. seems to be a lot of people who have had problems with the JR servos. whats the word on that? my last one was fine... but im scared I bought junk now!

Frank L 06-17-2010 04:47 PM


Originally Posted by whatsitallworth (Post 7555788)
so I just finished buying a setup for my car, same one I had in it when I ran it almost 2 years ago!!

I bought:

Spektrum dx3.0 remote
SR3000 receiver

JR 9100T for steering
JR 9100S for throttle

just spend nearly 300$ on it all and now I just read the "baddest servo ever" thread.. seems to be a lot of people who have had problems with the JR servos. whats the word on that? my last one was fine... but im scared I bought junk now!

The JR servos are hit and miss. You will get a great one that will last forever or just a few races and it is done. The nice thing about JR is that they replace them. I did notice the last few that I sent in, JR gave me this letter about running too much voltage through them. I was using nimh packs then and I think it was just a way to get out of replacing them next time. The warranty is only as good as the company behind it.

Arco 06-17-2010 05:32 PM


Originally Posted by whatsitallworth (Post 7555788)
so I just finished buying a setup for my car, same one I had in it when I ran it almost 2 years ago!!

I bought:

Spektrum dx3.0 remote
SR3000 receiver

JR 9100T for steering
JR 9100S for throttle

just spend nearly 300$ on it all and now I just read the "baddest servo ever" thread.. seems to be a lot of people who have had problems with the JR servos. whats the word on that? my last one was fine... but im scared I bought junk now!

The high end JR servos are on par with the Hitecs, you purchased excellent servos.:)
In fact those are the only 2 brands we sell. If you don't mess with low to mid range JR stuff you're fine.
I run JR, Hitec and some old Airtronics (all high end) and these have been my favorites for some time now.

http://i94.photobucket.com/albums/l1...ightT20012.jpg

Kent Beal 06-17-2010 05:58 PM

I've had JR digital servos for the last ten years and never ever have had a problem with any of them. The non-digital have been horrible. But a lot of people that had the worst trouble were those who had JR servo in the Losi 8-ights. The way the servo tray was built it just destroyed servos. All servos.

riverviewrc 06-17-2010 06:18 PM

I've burned JR's in throttle but not Hitec.

Adam Drake doesn't even use JR anymore how bad is that...

Arco 06-17-2010 07:38 PM


Originally Posted by Kent Beal (Post 7556167)
I've had JR digital servos for the last ten years and never ever have had a problem with any of them. The non-digital have been horrible. But a lot of people that had the worst trouble were those who had JR servo in the Losi 8-ights. The way the servo tray was built it just destroyed servos. All servos.

Absolutely right, especially with a GRP.....It took me an hour to get it at best, close to right. Then this came out and saved us all.:)

whatsitallworth 06-18-2010 12:13 AM

hmm very interesting guys.

whats a digital servo?

and whats with those high voltage ones... damn theyre nice, but 200$ a piece?!?!?! :eek::eek::eek::eek: are they like the 9100's on steroids?

Kent Beal 06-18-2010 10:11 PM

Digital servo center better and apply power quicker. This is how I understand it:
On a non-digital servo it can take a few degrees of deflection before its torque is applied, then still the torque ramps up.

On a digital it can take less than one degree and all the torque is applied.


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