3LikesTekin RX8 1/8 Scale Brushless ESC Thread
06-15-2012, 05:21 PM
Tech Regular
In your airtronics radio... is it capable of high sensitivity for channels 1 and 2 (meant for digital servos)?
I ask because i just upgraded to an FHSS4 setup from FHSS2 and setting the throttle channel for ultra response gave me ESC setup issues. Switching to FHSS2, or turning off the ultra response for the throttle channel in FHSS4 solved the problem.
I dunno if this is the issue or maybe part of it... but i figured it was worth mentioning if it can help.
I ask because i just upgraded to an FHSS4 setup from FHSS2 and setting the throttle channel for ultra response gave me ESC setup issues. Switching to FHSS2, or turning off the ultra response for the throttle channel in FHSS4 solved the problem.
I dunno if this is the issue or maybe part of it... but i figured it was worth mentioning if it can help.
I will also try a new sensor board. It must be something with the motor or the radio as the esc is new and acts the same as the first one was.
06-15-2012, 05:58 PM
06-15-2012, 06:01 PM
Ok, got the software working on my sons older laptop. I think I got the latest version downloaded and I can update the ESC now. How can I tell which version firmware is actually loaded on the ESC and which software version of the Hotwire application I am running?
Guess I will never get it running on my new PC.
Guess I will never get it running on my new PC.
To check the level of the Hotwire simply plug in ONLY the hotwire to the PC, launch the software , hit help, view the version.
On the esc simply plug into it and view "current version". If it attempts to auto update LET IT, it's old enough that it's considered mandatory.
06-15-2012, 06:06 PM
I will try to stay calm despite the fact that after 3.5 months I got my Tekin combo back from warranty service and it's acting the same way it had been when I sent it. They replaced the ESC but not the motor which IMO is the problem.
So I'll post the same old videos I posted a while back hoping that possibly one of you experienced similar problem...
http://www.youtube.com/watch?v=Sy3-3GHL7jA
http://www.youtube.com/watch?v=BfXyosLZ2X0
As you can see the pinion sort of vibreates at low speeds. When I accelerate the problem diminishes and no abnormal behaviour is visible.
These are videos I had taken before I sent the combo for warranty replacement. The 'new' combo acts in exact same way.
Tomorrow I'm going to try new sensor board, Spectrum DX3R Radio (mine is Airtronics MX3fhss), setting higher neutral width on the Hotwire.
Do you have any ideas what could be the reason?
I would really appreciate your advice...
So I'll post the same old videos I posted a while back hoping that possibly one of you experienced similar problem...
http://www.youtube.com/watch?v=Sy3-3GHL7jA
http://www.youtube.com/watch?v=BfXyosLZ2X0
As you can see the pinion sort of vibreates at low speeds. When I accelerate the problem diminishes and no abnormal behaviour is visible.
These are videos I had taken before I sent the combo for warranty replacement. The 'new' combo acts in exact same way.
Tomorrow I'm going to try new sensor board, Spectrum DX3R Radio (mine is Airtronics MX3fhss), setting higher neutral width on the Hotwire.
Do you have any ideas what could be the reason?
I would really appreciate your advice...
If they show good then please do this next. Use the Hotwire and raise your "Min throttle" setting up in incriments of 2 until it no longer buzzes. From the sound of the car something may be sticking or binding in the drive train. This could be verified by removing the pinion and powering the motor to see if the noise is gone.
06-15-2012, 06:07 PM
any way to get more power for my servo without a bec? CC bec died on me this weekend and took out $300 worth of electronics with it...im hoping I can find a way to get decent steering without the risk of running a BEC. hooked it all up without the bec and forgot how underpowered it is..these aren't high voltage servos either.
wish the BEC was adjustable in the rx8
wish the BEC was adjustable in the rx8
06-15-2012, 08:12 PM
randy,
Is it possible to replace the wire on the RX8 my self? it got little damaged and the rx8 started to cut out on me. Im pretty good at soldering just haven't opened up the rx8 to take a look at it. Let me get your opinion. thanks
Is it possible to replace the wire on the RX8 my self? it got little damaged and the rx8 started to cut out on me. Im pretty good at soldering just haven't opened up the rx8 to take a look at it. Let me get your opinion. thanks
06-15-2012, 08:20 PM
I feel bad for the guys that arent in the States. I dropped my RX8 off at USPS the 11th, and got notification via email today that i will have it at my door the 18th.
Hands down, some of the best customer service ive ever had. For those having issues, things DO happen. Just stay in constant contact until its resolved. Tekin WILL take care of things...
Hands down, some of the best customer service ive ever had. For those having issues, things DO happen. Just stay in constant contact until its resolved. Tekin WILL take care of things...
06-15-2012, 09:59 PM
Not sure why you're upset.
To check the level of the Hotwire simply plug in ONLY the hotwire to the PC, launch the software , hit help, view the version.
On the esc simply plug into it and view "current version". If it attempts to auto update LET IT, it's old enough that it's considered mandatory.
To check the level of the Hotwire simply plug in ONLY the hotwire to the PC, launch the software , hit help, view the version.
On the esc simply plug into it and view "current version". If it attempts to auto update LET IT, it's old enough that it's considered mandatory.
Anyway, I have it working on my sons laptop and got everything updated to 223. I defaulted the settings, will reload my settings and then recalibrate. I could not see the version because I had to press on advance to view the current version in the side panel.
I would like to get it to work on my desktop PC, but not sure I can. At anyrate thanks for your help. And just glad I can now update all my other Tekin toys...
06-16-2012, 07:41 AM
when you say that it provides 6v 5a....it must be the difference between linear BEC in the esc vs a switching BEC like a external..
because 5v on the external bec feels over twice as strong as the 6v output from the esc BEC.
running airtronics mt-4, rx8, etc..
i just found a LRP 2in1 bec that might work better for my needs..
it seems to get power from the balance plug as opposed to going straight to the main batt leads..seems like in the event of a failure, the chance of full 16.8v going through to all my electronics is minimal since it is using the dinky balance tabs..also has a LVC in it
anyone try this?
06-16-2012, 09:38 AM
If you mean servo lead, yes it's possible. Be patient and don't use too hot of a temp setting.
06-16-2012, 09:42 AM
I am running a kyosho mp9 w/ JR9100s servo (but i have run a hotbodies dsj-1ss in it as well..similar specs to the jr)
when you say that it provides 6v 5a....it must be the difference between linear BEC in the esc vs a switching BEC like a external..
because 5v on the external bec feels over twice as strong as the 6v output from the esc BEC.
running airtronics mt-4, rx8, etc..
i just found a LRP 2in1 bec that might work better for my needs..
it seems to get power from the balance plug as opposed to going straight to the main batt leads..seems like in the event of a failure, the chance of full 16.8v going through to all my electronics is minimal since it is using the dinky balance tabs..also has a LVC in it
anyone try this?
when you say that it provides 6v 5a....it must be the difference between linear BEC in the esc vs a switching BEC like a external..
because 5v on the external bec feels over twice as strong as the 6v output from the esc BEC.
running airtronics mt-4, rx8, etc..
i just found a LRP 2in1 bec that might work better for my needs..
it seems to get power from the balance plug as opposed to going straight to the main batt leads..seems like in the event of a failure, the chance of full 16.8v going through to all my electronics is minimal since it is using the dinky balance tabs..also has a LVC in it
anyone try this?
If you're using the Rx8 in a 2s application and your servo can take HV voltage than use the wiring diagram I posted pages back, it shows you how to bypass the bec for the servo and radio system.
Adding a cap may not be required on your setup but it will do nothing more than help the system out by buffering voltage spikes on the BEC line.
They're cheap and the spektrum is often easy to find: SPM1600
06-16-2012, 11:43 AM
XO-1 & RX8
Will RX8 able to handle CC 1717 in a XO1?
My stock ESC is dead, and I have a spare RX8.
My stock ESC is dead, and I have a spare RX8.
06-16-2012, 11:44 AM
06-16-2012, 03:00 PM
Tech Regular
I'd like you to use the Rx8's sensor checker feature and determine if your sensors are working properly. There's a reason why we have this feature.
If they show good then please do this next. Use the Hotwire and raise your "Min throttle" setting up in incriments of 2 until it no longer buzzes. From the sound of the car something may be sticking or binding in the drive train. This could be verified by removing the pinion and powering the motor to see if the noise is gone.
If they show good then please do this next. Use the Hotwire and raise your "Min throttle" setting up in incriments of 2 until it no longer buzzes. From the sound of the car something may be sticking or binding in the drive train. This could be verified by removing the pinion and powering the motor to see if the noise is gone.
I'm only hoping that Tekin will send me a replacement faster than it was done with the combo.....
06-16-2012, 06:08 PM
Tech Rookie
I'm using a rx8 with a pro4 in a desc410r. The negative wire keeps coming loose on the deans any ideas. I've got a good solder , the drive line smooth I'm not sure what the problem is.