Register Now

hareedy · 11-21-2013, 07:39 PM

hey guys
i have jr 8717s on the cyclic and futaba bls 251 on the tail
i heard from someone on readyheli that i cannot use the 8717s on 6 volts with the kontronik
is this true , did anybody try to run the 8717s on 6 volts with the kontronik ?
cheers

rcmarty · 11-21-2013, 08:00 PM

Not a kontrinics expert by any means but.

The kontronics jive esc did have bec issues with high current servos at max voltage.

Max voltage set via prog card for the jive is 6 volts

Kosmic is 8 volts so I think it's possible that you can run the system off 6 volts from a kosmic.

I'd wait for someone with experience to chime in though.

Martin

hareedy · 11-21-2013, 08:06 PM

Quote:

Originally Posted by rcmarty

Not a kontrinics expert by any means but.

The kontronics jive esc did have bec issues with high current servos at max voltage.

Max voltage set via prog card for the jive is 6 volts

Kosmic is 8 volts so I think it's possible that you can run the system off 6 volts from a kosmic.

I'd wait for someone with experience to chime in though.

Martin

so its true regarding the jive
anyway i am using the kosmik now so anyone from kontronik ?

RyanW · 11-23-2013, 09:46 AM

I have ran 8717s with BLS251 on Jive controllers for years with zero issues. I tend to set the Jive at 5.6v for ultimate in reliability. I am not sure what angle your advice about not running 6v is coming from.

rcmarty · 11-23-2013, 03:56 PM

Quote:

Originally Posted by RyanW

I have ran 8717s with BLS251 on Jive controllers for years with zero issues. I tend to set the Jive at 5.6v for ultimate in reliability. I am not sure what angle your advice about not running 6v is coming from.

Running at 5.6v isn't an issue.

Running at 6v (max for the bec) to a set of hungry servos ( 8717,610,savox etc) on quick movments ( pitch pump setting can trigger this ) will force some back EMF and shut down the bec.

I'm assuming at 5.6v there is a voltage buffer there to deal with back EMF.

Martin

bernard_d · 11-24-2013, 02:24 AM

I recently saw a 800 with 8717 servo's with 6.0 V , they were vibrating the whole time.
I mounted a 5.6 V BEC and the problem was gone.

Stolla · 11-25-2013, 08:46 AM

No problem on kosmik, jive was v7 then only when 2 leads installed with problems, at least far i know thats the official version. Ive been using them on 5.6 with jive many years, you wont notice difference anyway

11-21-2013, 07:39 PM	#1 (permalink)
hareedy Registered Users My HF Map location Join Date: Sep 2008	jr 8717 on the logo and the kontronik hey guys i have jr 8717s on the cyclic and futaba bls 251 on the tail i heard from someone on readyheli that i cannot use the 8717s on 6 volts with the kontronik is this true , did anybody try to run the 8717s on 6 volts with the kontronik ? cheers

11-21-2013, 08:00 PM	#2 (permalink)
rcmarty Registered Users Join Date: May 2006	Not a kontrinics expert by any means but. The kontronics jive esc did have bec issues with high current servos at max voltage. Max voltage set via prog card for the jive is 6 volts Kosmic is 8 volts so I think it's possible that you can run the system off 6 volts from a kosmic. I'd wait for someone with experience to chime in though. Martin __________________ Logo XXtreme 800 8917 / 256HV VBC Logo XXtreme 700 on 14s 8917 / 256HV VBC NEO Logo XXtreme 770 14s 8917/9188 VBC Logo 600 8917/ 9188 4035-500 VBC NEO

11-24-2013, 02:24 AM	#6 (permalink)
bernard_d Registered Users Join Date: Nov 2010	8717 I recently saw a 800 with 8717 servo's with 6.0 V , they were vibrating the whole time. I mounted a 5.6 V BEC and the problem was gone.

11-25-2013, 08:46 AM	#7 (permalink)
Stolla Registered Users Join Date: Jul 2009	No problem on kosmik, jive was v7 then only when 2 leads installed with problems, at least far i know thats the official version. Ive been using them on 5.6 with jive many years, you wont notice difference anyway __________________ Tdr quantum 4530 1.4 yy h/ jive120 beastx, Vibe e 8 12s mx 700 1.32yy vbargov fusionhawk, Banshee nr 36 kosmik 200 pyro 800 1.4yy 455kv 14s beastx, xtreme 700 pyro 850 1.5yy 14s kosmik 200

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-23-2013, 09:46 AM	#4 (permalink)
RyanW Registered Users Join Date: Jul 2005	I have ran 8717s with BLS251 on Jive controllers for years with zero issues. I tend to set the Jive at 5.6v for ultimate in reliability. I am not sure what angle your advice about not running 6v is coming from.

Register Now

Log-in