HELP ! MMP + Spektrum RX = cutting out ?

[Topas]

I have the same problem with the MMP and a Savox 1258 servo. (I tried 2s 3s and 4s - I always get this cutting out!) This has to be a software problem --- castle can you fix it ?

[Topas]

No official statement in this case ?

[Cain]

hmm, I got too of these ESCs coming in to use with some 8.5 ballistics, now I am worried.

[kingdomracer]

I just came back from the track after testing the 7955TG and didn't experience the same hesitation at all. I did let my buddy drive and he got a glitch. I installed a CC BEC and took out the 7950TG and there was according to him still a slight glitch. Well, after talking a bit I believe my glitch is still ESC related and have a hunch that it's my fault after all. You see at my track some of the other guys who run electric use reverse (as to not have to wait for the turn marshall if your up against a wall or pipe) and I followed suit a couple of races back. I believe my ESC is simply stalling due to the reverse setting. Too bad it got real late because I definitely wanted to test it out. But, anyways the reason I'm sharing this is to hopefully get some feedback as to the possibility of the reverse setting being the culprit. And for those of you experiencing this glitch; Do you have the reverse setting on?

[kingdomracer]

Well an update on my last thoughts...NO...glitch still there!
But, I do feel I came up with a real solution.
First I'm going to use the MMP internal BEC to power my receiver and transponder, in other words plug it directly into the radio with all wires still in the plug including the red wire.
Second, I'm going to use the CC BEC to power just the HiTec 7945TG (just got it), so basically connect both the CC BEC and servo wire into a heavy duty servo Y adapter and before plugging it into the radio disconnect the red wire since the servo is what needs to be powered with a signal wire but the CC BEC just needs to be grounded back to the ESC.

I don't know if anyone has suggested this fix or tried it but theoretically it is sound and should work. I'll post up my results.

I stopped running the MMP , even though I love Castles other products I still think the MMP needs more tweaking before I will run it again .

I have a Novak Havok Pro SC ESC now and its SUPER smooth , works great with the same batteries I was using on the MMP and doesnt need an external BEC too run right , and works with the same high torque digital servo I tried to use with the MMP .

So far I am loving the Havok Pro SC it runs really cool and wasnt too hard to program .

[kingdomracer]

BashemSmashem are you still running a 2s setup for your SCT?
I run a 2s setup as well in my 4X4 with a 7950TH and 1409/1Y-MMP and have no problems whatsoever. I did install a spektrum cap.
My problem is not with my SCT it's with my LOSI 8 2.0.
My setup there is a 4s-1512/1.5Y-MMP with a 7945TH
batts: TP 4s 3200mah/40c

Well I just finished my wiring and will post up my results after a couple rounds at practice.

Yes I am running a 2s setup in a Hyper 10SC with a JR 9100T servo , tried a cap and it didnt work , went too a external BEC and the cutting out went away but it still didnt run the Ballistic 550 motor right , I would get this weird cogging when going slow around corners no matter what settings I would try .

The Havok Pro SC ESC is running the same setup with no problems at all .

[slimthelineman]

Try going back to the last non beta software for the cogging. As far as your rx cutting out, your running 2s which is only 7.4v and your asking your bec to give 6v no matter what. A hard thing to do when your battery voltage sags under load. Run 3s or if you must use 2s turn the bec voltage down. Nothing wrong with the mmpros. Just more sensitive than the Slovak stuff cause it's more adjustable. Pretty sure there is a post in the forum where Patrick addressed this issue try searching for it.

Gee slim thanks for clearing that up for me (The MMP doesnt work as well as the Novak because it has more adjustability) . Tried going back several versions and it still was cogging (though I am not sure if you could call it cogging since the truck was already moving) . I tried darn near every setting and suggestion that was thrown my way and nothing got the MMP to work the way it should . I even ran a Mamba Monster in it on 2s and it didnt cut out or cog . IDK maybe something is wrong with my MMP ?

[slimthelineman]

Damn. Worth a try though. My only other sugestion is to call tech support and they coul help fix or replace it. Sounds as if you've made a valiant effort sorry to hear no dice. Mine did the same cogging thing from a standstill to wot with the new beta. Went away after going back to last non beta version. Never had problems with the bec though only run 3s. Will try 2s and see if I get any results.

[slimthelineman]

Really I feel like the mmpro works much better than the orange stuff because it's so adjustable. Just need to fully understand what each setting does and how it will affect your setup. Good luck hope you can figure it out and ditch the orange paperweight.

[kingdomracer]

Well I said I would post up my results of adding a CC BEC to a 4s setup using the MMP/1512 1800kv with a HiTec 7945TH which is known to need more amps at stall which the MMP ESC internal BEC cannot deliver.

I installed the CC BEC straight to the servo and just brought the ground and signal wire back to the receiver in a Y adapter.

I am still using the MMP BEC to power the radio and transponder. So all three wires from the ESC are plugged into receiver.

Glitch is gone

Now only if Castle would include this in their CC BEC instructions for those of us using HV servos

I just went back too the Havok Pro SC as I couldnt get the MMP to work the way I wanted , plus its sooo much cleaner looking without the extra wiring of the BEC .

Not too mention we SHOULDNT HAVE TOO BUY AN EXTERNAL BEC TO RUN THIS ESC !

[slimthelineman]

You don't. Mine works great on the internal bec on 2&3s with a 550 motor in my 4x4 slash. It's a bit ridiculous to complain so much IMO. Not going to change the fact that you couldn't get it to work. It's a 3 amp 6 volt bec. Not suprised it won't push a monster digital servo a receiver and a transponder. If the Slovak works better for you then run it and be happy. But it's not castles fault you coulnt get it to work. Not really sure why everyone uses these high draw servos in a sc anyway. I run a 360z and it's more than enough. And if the mmpro is in an 1/8 scale well your on your own cause it was designed for 1/10 applications. Not trying to be a jerk or anything but it gets old reading how some can't get the mmpro to work when it works great for most. Novak has always made good stuff too I just choose not to run it for personal reasons. Whatever the case may be the only real solution is to run what works for your setup.