Tekin RX8 1/8 Scale Brushless ESC Thread
I'm running a RX8 - Pro4 4600 - combo in my DESC410V2.
What could it be when it feels like the car is losing power after about 4mins of runtime. Batteries are new, tried several. The powerloss is not huge but it's there.
I have used this combo in a Losi and in a Slash and I have never noticed this before.
Could it be the temp in the ESC? It's around 160-170 after 6 mins.
Funny that I get higher temps in the ESC when I have swtiched to a lighter car...?
Other settings:
RX8 currentlimit around 65%
EPA throttle around 90%
Pinion 13 (really small track)
Thanks for your help!
What could it be when it feels like the car is losing power after about 4mins of runtime. Batteries are new, tried several. The powerloss is not huge but it's there.
I have used this combo in a Losi and in a Slash and I have never noticed this before.
Could it be the temp in the ESC? It's around 160-170 after 6 mins.
Funny that I get higher temps in the ESC when I have swtiched to a lighter car...?
Other settings:
RX8 currentlimit around 65%
EPA throttle around 90%
Pinion 13 (really small track)
Thanks for your help!
Tech Apprentice
Gearing down isn't what you're looking for. If you're losing power every run around 4 minutes I'd say your batteries aren't up to the task, no matter how new they are. We do not pull back power due to temperatures unless the esc thermals, we will then pull all of the throttle away, not just some.
Tech Elite
iTrader: (16)
I got higher temps on the esc when I switched to a more efficient truck too. It was because the airflow wasn't as good over the esc. Putting the fan back on brought me back down around 110 from 180, while it used to be around 125 no fan. Make sure it can breath.
As for power loss, I haven't found it to do so on the rx8, but my Castle mmp was horrible once it got hot. I agree with Randy though, this sounds more like a battery dump to me. That makes a lot of sense since you say shorty pack, as I think the max capacity on those is 4200, and I used to see fading around 5 min on anything less than a 5000 with good C. The 6600 nanos I used for a long time used to dump like that around the 7 min mark of an 8min main.
As for power loss, I haven't found it to do so on the rx8, but my Castle mmp was horrible once it got hot. I agree with Randy though, this sounds more like a battery dump to me. That makes a lot of sense since you say shorty pack, as I think the max capacity on those is 4200, and I used to see fading around 5 min on anything less than a 5000 with good C. The 6600 nanos I used for a long time used to dump like that around the 7 min mark of an 8min main.
I'm trying to figure out what is the max length of screw that can go into the T8 threads.. Do you eventually have this info?
edit: for the guys interested it's 6mm I just opened my T8 to mesure it
Last edited by Pulse_; 02-16-2013 at 05:39 AM.
Tech Regular
iTrader: (19)
i need some help here guys, my issue is my motor is getting wayyyyyy too hot.
brand new losi8 rx8 and 2050 on a 4s and the gearing is 16/45 and the motor went 205* geared down to 15/45 the change was only a few degrees. the track i run on is revelation raceway and its huge, lots of full throttle sections.. i pulled the power down in the rx8 to 80% and it did nothing for the temps then went and put the throttle setting on #1 and the hit comes in too slow but, it did not make a difference in the motor temps.. the car is not binding and rolls free..
any idea's before i smoke this motor.
thanks ralph
brand new losi8 rx8 and 2050 on a 4s and the gearing is 16/45 and the motor went 205* geared down to 15/45 the change was only a few degrees. the track i run on is revelation raceway and its huge, lots of full throttle sections.. i pulled the power down in the rx8 to 80% and it did nothing for the temps then went and put the throttle setting on #1 and the hit comes in too slow but, it did not make a difference in the motor temps.. the car is not binding and rolls free..
any idea's before i smoke this motor.
thanks ralph
@Ralph How long did you run the car? Rev is big so if the layout is open and flowing 16/45 isn't too far off.
Do you have a lot of wheel spin?
Do you have a lot of wheel spin?
Tech Regular
iTrader: (19)
Randy, roughly 8-9 min, and yes the track was loose and dusty so i had my fair share of wheel spin.. i even pulled my m11x down to 80% to try to control the wheel spin witch was ok but i would flat out get beat down the straight.. im learning the set up on the 8 as i came from the rc8b....the weather was in the mid 80's yesturday as well.
I recently bought a mint condition RX8/T8 combo for my 8th scale buggy, and tried it out at the track for the first time today. First impressions, I liked it, the esc was very responsive (maybe too responsive ), and was very smooth.
But, one thing I noticed was that the RX8 interfered with my Hitec Servo too much. The servo and the ESC would sometimes cut off, whether I'm about to hit a jump or land from a jump. Is this normal? How do I fix it? I'm going to be switching to a Savox soon, and I want to avoid the loss of power. Thanks.
Also, is there any way to reset the setting on the Rx8 back to factory (Default)settings? Thanks.
But, one thing I noticed was that the RX8 interfered with my Hitec Servo too much. The servo and the ESC would sometimes cut off, whether I'm about to hit a jump or land from a jump. Is this normal? How do I fix it? I'm going to be switching to a Savox soon, and I want to avoid the loss of power. Thanks.
Also, is there any way to reset the setting on the Rx8 back to factory (Default)settings? Thanks.
Tech Master
iTrader: (41)
Put a cap on it dude! I run a savox with spektrum radio without a capacitor its glitch city.
Tech Master
iTrader: (41)
Oh to reset it read the directions..haha hotwire or teamtekin.com i forgot how to do it one touch.
Tech Adept
iTrader: (6)
I recently bought a mint condition RX8/T8 combo for my 8th scale buggy, and tried it out at the track for the first time today. First impressions, I liked it, the esc was very responsive (maybe too responsive ), and was very smooth.
But, one thing I noticed was that the RX8 interfered with my Hitec Servo too much. The servo and the ESC would sometimes cut off, whether I'm about to hit a jump or land from a jump. Is this normal? How do I fix it? I'm going to be switching to a Savox soon, and I want to avoid the loss of power. Thanks.
Also, is there any way to reset the setting on the Rx8 back to factory (Default)settings? Thanks.
But, one thing I noticed was that the RX8 interfered with my Hitec Servo too much. The servo and the ESC would sometimes cut off, whether I'm about to hit a jump or land from a jump. Is this normal? How do I fix it? I'm going to be switching to a Savox soon, and I want to avoid the loss of power. Thanks.
Also, is there any way to reset the setting on the Rx8 back to factory (Default)settings? Thanks.
Now I have freed up the steering a little bit, and avoid to have the front wheels get caught under a pipe (stalled digital servos eat BECs for breakfast).
Hitec and Savox servos do draw more current. Which servos do you (plan to) use?
Randy: Does the RX8 internal BEC shut off at current overload to protect itself, e.g., when front wheels get caught under a pipe?
I had similar issues with an RX8 that is from 2010/11 and a JR high speed servo (JRPSZ9100HVS). It got worse over time, and finally had to get the internal BEC replaced.
Now I have freed up the steering a little bit, and avoid to have the front wheels get caught under a pipe (stalled digital servos eat BECs for breakfast).
Hitec and Savox servos do draw more current. Which servos do you (plan to) use?
Randy: Does the RX8 internal BEC shut off at current overload to protect itself, e.g., when front wheels get caught under a pipe?
Now I have freed up the steering a little bit, and avoid to have the front wheels get caught under a pipe (stalled digital servos eat BECs for breakfast).
Hitec and Savox servos do draw more current. Which servos do you (plan to) use?
Randy: Does the RX8 internal BEC shut off at current overload to protect itself, e.g., when front wheels get caught under a pipe?
Tech Fanatic
iTrader: (5)
Randy, roughly 8-9 min, and yes the track was loose and dusty so i had my fair share of wheel spin.. i even pulled my m11x down to 80% to try to control the wheel spin witch was ok but i would flat out get beat down the straight.. im learning the set up on the 8 as i came from the rc8b....the weather was in the mid 80's yesturday as well.
Guest
iTrader: (13)
randy
hello randy, o have any info on ty campbell trx truck????? pics or anything