High power servos advice please

[rsj]

Hi. Couldn't find much out about this but I'm looking for a high torque servo which I can power direct from 2s lipo rather than from the Bec supply from my esc.
If this is already covered somewhere please point me in the right direction as I couldn't find it.
This is the first quality servo I will have bought and am finding all the choices and specs hard to sort through and some of the manufacturers I've found I've not heard of before, mks XQ etc. Servo is initially to go in a DEX410 so needs to be standard size.
I know a lot of people reccomend Savox for value, I looked but their 'standard size' High voltage SC1267/8sg's are 48mm long so won't fit.
Spektrum S6090 or S6100 both run 7.4v have steel gears and seam reasonably priced at £70-80.
KO RSX Responce/Power will run 7.4v but are too expensive for me.
Can anyone suggest any others look at or any other advice?
Thanks in advance.
Jools

[Andyp]

I can't understand why you need to run it straight from the battery? My old ko was getting a bit tired so I thought I would try a savox 1258, i think it's plenty good enough for my 410 , I have since just bought one to go in my 210.

[kayce]

Originally Posted by Andyp

I can't understand why you need to run it straight from the battery?

Me either.

[Steven Forster]

Could try having a look on here..........

www.servodatabase.com/

[rsj]

Hi.
Thanks for the response's. I think I need to try to explain my reasoning behind thinking a high torque / high voltage servo might be a good idea... it was late when I posted.
As I don't have much previous knowledge on this subject I have been trying to educate myself. After lots of reading up on high torque servos it seems that although most people don't have any problems at all some people suffer with brownouts and glitches etc after fitting a high torque servo, I think these problems are usually overcome with a glitch busters / rx capacitor but after seeing the results of a buggy hitting a wall at full speed due to a brownout / glitch I was trying not to leave anything to chance.
When I read about the high voltage servos which draw their current directly from a 2s battery leaving the Esc's BEC to only supply current to the rx and transponder I thought this could be the answer to any current related problems.
This all seems too good / simple to be true, am I missing something or got the wrong end of the stick?? Please feel free to correct me.
Also the Spektrum s6100 specs show an increase in torque from 15kg @ 6.0V to 26kg @ 7.4V which seems like another advantage.
Thanks again for any advice.

[rsj]

Thanks for the link dexter24 I did look here and although easy to compare specs couldn't see any high voltage servos listed.

[kayce]

Originally Posted by rsj

Hi.
Thanks for the response's. I think I need to try to explain my reasoning behind thinking a high torque / high voltage servo might be a good idea... it was late when I posted.
As I don't have much previous knowledge on this subject I have been trying to educate myself. After lots of reading up on high torque servos it seems that although most people don't have any problems at all some people suffer with brownouts and glitches etc after fitting a high torque servo, I think these problems are usually overcome with a glitch busters / rx capacitor but after seeing the results of a buggy hitting a wall at full speed due to a brownout / glitch I was trying not to leave anything to chance.
When I read about the high voltage servos which draw their current directly from a 2s battery leaving the Esc's BEC to only supply current to the rx and transponder I thought this could be the answer to any current related problems.
This all seems too good / simple to be true, am I missing something or got the wrong end of the stick?? Please feel free to correct me.
Also the Spektrum s6100 specs show an increase in torque from 15kg @ 6.0V to 26kg @ 7.4V which seems like another advantage.
Thanks again for any advice.

Just to add my own final 2-bits worth - we've been having trouble with "glitches/brown outs" since the days of the first Electronic Speed Controls, and seemingly even more nowadays with the use of highpowered Brushless motor systems - but quite literally they have all been eliminated via the application of resistors included with most brands of ESCs (that attach straight to the power leads on the esc) and in the worst of cases with an oldschool glitch buster plugged into the battery port on the Receiver.... and even fewer by those using a quality 2.4g radio system.

I honestly can't even recall the last time I saw an out of control car, if it wasn't by a rookie driver using inferior/bone stock electronics....., and IMHO I think you're just over-thinking/over-worrying this whole thing.