Fed up with brown outs
02-19-2014, 01:12 PM
#16
Had the same issue running mod buggy. Brown outs only happened when the throttle was pulled abruptly. A glitch buster (Receiver capacitor) solved the problem for $5.00.
Yes, the power pull between the Savox hi torque servo and mod motor dropped the voltage available to the receiver. The older Spektrum receivers were more subject to voltage drops than the newer ones. Thus a brown out. Haven't had that problem since.
Yes, the power pull between the Savox hi torque servo and mod motor dropped the voltage available to the receiver. The older Spektrum receivers were more subject to voltage drops than the newer ones. Thus a brown out. Haven't had that problem since.
02-20-2014, 11:21 AM
#17
As for solder connections involving the BEC, I bet I could do a better job. Looks like a I have more solder than necessary. I'm thinking I should probably solder the BEC wires to the tabs first, then solder the ESC wires to the tabs.
I set the MMP to 6volts on the BEC. Also, for what it's worth, I'm going to replace the SR3001 Pro with my extra Spektrum SR3000 receiver.
I just want to try everything before I get off my wallet and put in for a sweet new HiTech servo, and perhaps a new Rx/Tx module or whole new control setup.
Unfortunately, I won't get to test any of these changes until Saturday at the latest.
02-21-2014, 02:07 AM
#18
Tech Regular
Your bec is not wired correctly. You should power just the servo with the castle bec and try that. Only hook the signal wire from the servo to the receiver then the power wires to the external bec.
02-21-2014, 05:18 AM
#20
I would start simple....
More often then not the BEC brownouts can be smoothed away with just a glitch buster. I am not sure if what all you have is hooked up properly not having seen it. But if you are willing to gamble $5-6 at it just get a glitch buster and remove the external BEC from the setup. This will mean you need to make sure all three wires on the ESC are plugged into the receiver though (should have that middle red wire disconnected when using an external BEC).
Or if you plan to run a higher receiver voltage than the MMP can do, or simply have zero faith in a glitch buster let's make sure things are all hooked up right. You simply should not have this issue with the external BEC. First off the middle red wire to the ESC needs to be disconnected, that is where it would want to feed power to the receiver and take on the role of BEC. Beyond that it is simply a matter of properly attaching the external BEC you have to things based on their instructions.
I am not a personal fan of the external BEC though, I like simple and tidy and they just end up being more wires and parts in the chassis to deal with. The glitch buster is not a whole lot better in that respect, but it is simpler and there is only about half as much of it to deal with physically in the chassis where space is valuable if I had to do it at all.
Also, of the three players in this brownout game (Battery / BEC / Servo), the battery really plays the smallest part.
More often then not the BEC brownouts can be smoothed away with just a glitch buster. I am not sure if what all you have is hooked up properly not having seen it. But if you are willing to gamble $5-6 at it just get a glitch buster and remove the external BEC from the setup. This will mean you need to make sure all three wires on the ESC are plugged into the receiver though (should have that middle red wire disconnected when using an external BEC).
Or if you plan to run a higher receiver voltage than the MMP can do, or simply have zero faith in a glitch buster let's make sure things are all hooked up right. You simply should not have this issue with the external BEC. First off the middle red wire to the ESC needs to be disconnected, that is where it would want to feed power to the receiver and take on the role of BEC. Beyond that it is simply a matter of properly attaching the external BEC you have to things based on their instructions.
I am not a personal fan of the external BEC though, I like simple and tidy and they just end up being more wires and parts in the chassis to deal with. The glitch buster is not a whole lot better in that respect, but it is simpler and there is only about half as much of it to deal with physically in the chassis where space is valuable if I had to do it at all.
Also, of the three players in this brownout game (Battery / BEC / Servo), the battery really plays the smallest part.
02-23-2014, 09:07 AM
#21
Tech Master
(That's going from what I read on the charger when recharging after similar runtime, same batt.)
02-23-2014, 05:37 PM
#22
Went racing yesterday. Tried everything I could. My friend who sold me the radio was there, and we determined that the transmitter module needs to be repaired by Spektrum. The antenna is messed up. The original owner had rerouted the antenna so that it would exit through the top of the radio.
So since I wanted to race, I bought a $80 Sanwa MX-V. No more Spektrum questions (for now), and no more brown-outs, lawn-darts, or over jumps.
So since I wanted to race, I bought a $80 Sanwa MX-V. No more Spektrum questions (for now), and no more brown-outs, lawn-darts, or over jumps.
02-24-2014, 10:11 AM
#25
02-24-2014, 10:30 AM
#26
Tech Regular
iTrader: (5)
Hoping for some "fix-ya" advice.
I bought a used Ko Propo EX-10 Helios which came with a Spektrum SR3001 Pro receiver and SM1001 Pro transmitter module. It browns out at the worst times! On the straight away, out of turns, prior to a jump, during a jump when flight attitude needs adjustment.... pretty much all the effen time!
Sometimes, the problem does not show itself at all, for short periods of time.
I'm using a Savox 1267 servo, and I have a Castle BEC properly installed to prevent glitching. I'm also using Castle MMP with 3800kv motor. I use the Castle Link to program the esc.
Is this particular Spektrum equipment unreliable? Is there a fix for it? The antenna has been relocated (by the previous owner) from the side of the Tx module to the top of the controller.
I'll be willing to refit the controller with Ko Propo equipment, but that'll cost $200.
What other Rx/Tx modules are compatible that may not cost as much as Ko Propo?
Any comments and feedback are greatly appreciated!
I bought a used Ko Propo EX-10 Helios which came with a Spektrum SR3001 Pro receiver and SM1001 Pro transmitter module. It browns out at the worst times! On the straight away, out of turns, prior to a jump, during a jump when flight attitude needs adjustment.... pretty much all the effen time!
Sometimes, the problem does not show itself at all, for short periods of time.
I'm using a Savox 1267 servo, and I have a Castle BEC properly installed to prevent glitching. I'm also using Castle MMP with 3800kv motor. I use the Castle Link to program the esc.
Is this particular Spektrum equipment unreliable? Is there a fix for it? The antenna has been relocated (by the previous owner) from the side of the Tx module to the top of the controller.
I'll be willing to refit the controller with Ko Propo equipment, but that'll cost $200.
What other Rx/Tx modules are compatible that may not cost as much as Ko Propo?
Any comments and feedback are greatly appreciated!
I had brown out issues every single lap with my brand new Spektrum radio. Sold it, bought airtronics MT4, best decision i ever made in RC. I will never ever ever buy a spektrum radio again, their receivers just are not made well and brown out all too often.
02-24-2014, 10:37 AM
#27
Tech Regular
iTrader: (5)
Went racing yesterday. Tried everything I could. My friend who sold me the radio was there, and we determined that the transmitter module needs to be repaired by Spektrum. The antenna is messed up. The original owner had rerouted the antenna so that it would exit through the top of the radio.
So since I wanted to race, I bought a $80 Sanwa MX-V. No more Spektrum questions (for now), and no more brown-outs, lawn-darts, or over jumps.
So since I wanted to race, I bought a $80 Sanwa MX-V. No more Spektrum questions (for now), and no more brown-outs, lawn-darts, or over jumps.
02-24-2014, 10:54 AM
#28
For the last seven years I have run nothing but Spektrum radios and receivers (some the old kind) in every RC I have. I run dirt off road, dirt oval, carpet oval, carpet on road; I have never had a problem with a Tekin or Novak ESC and the Spektrums.
When running 1 cell classes, I run a Novak booster and no issues with that set up either. I have not run a 1/10 Castle ESC or motor or Savox servos and my previous radio (years ago) was Futaba with Spektrum module.
When running 1 cell classes, I run a Novak booster and no issues with that set up either. I have not run a 1/10 Castle ESC or motor or Savox servos and my previous radio (years ago) was Futaba with Spektrum module.
02-24-2014, 11:25 AM
#29
For the last seven years I have run nothing but Spektrum radios and receivers (some the old kind) in every RC I have. I run dirt off road, dirt oval, carpet oval, carpet on road; I have never had a problem with a Tekin or Novak ESC and the Spektrums.
When running 1 cell classes, I run a Novak booster and no issues with that set up either. I have not run a 1/10 Castle ESC or motor or Savox servos and my previous radio (years ago) was Futaba with Spektrum module.
When running 1 cell classes, I run a Novak booster and no issues with that set up either. I have not run a 1/10 Castle ESC or motor or Savox servos and my previous radio (years ago) was Futaba with Spektrum module.
Anyway, I will have it repaired, then I'll try the unit again. I really liked the Ko Propo, and would like to go back to it.
I'll be sure to update this thread when I get the module back. The results will either embolden or squelch the Spektrum and Savox haters, and I will likely choose a side then.
Again, thanks for all the input.
02-24-2014, 11:44 AM
#30
Tech Master
iTrader: (39)
When it is a spike due to a pipe touch, etc... it is expected, and yes, negligible as it is only momentary. I'm not sure who includes a 2 amp BEC, I think 3 was the norm, which seems to be changing to 5. But claiming to know based on similar runs and no data is crazy.