Xmaxx ultimate cogging problem, please help

[KnowAir]

The cogging suggests something is defective or not calibrated correctly I feel. The G2 Max 6 is plenty of ESC for an Xmaxx w/5690. It's rated to 200a. The Max6 combo is waay stronger than stock, even with the addons I can't see an Xmaxx being too heavy. Curious to see what happens w/Max 5. Best of luck with it.

 

[WickedFog]

The cogging suggests something is defective or not calibrated correctly I feel. The G2 Max 6 is plenty of ESC for an Xmaxx w/5690. It's rated to 200a. The Max6 combo is waay stronger than stock, even with the addons I can't see an Xmaxx being too heavy. Curious to see what happens w/Max 5. Best of luck with it.

The heaviest vehicle HW recommends for the Max6 is around 22 lbs. The X-Maxx stock, minus batteries is 19.1 lbs. Add a few aluminum upgrades and batteries and you're pushing the limit.

 

[KnowAir]

The heaviest vehicle HW recommends for the Max6 is around 22 lbs. The X-Maxx stock, minus batteries is 19.1 lbs. Add a few aluminum upgrades and batteries and you're pushing the limit.

Perhaps, where did you find a weight limit for the Max 6? I can't find one listed on HW site, or instruction manual. However, I do see specifically that the Max 6 is rated for a 1/5 light truck, which the Xmaxx barely qualifies as. Heck, even the Kraton 8s has a rebranded Max 6 (Firma 160) and that weighs 25lb. I stand by my statement, cogging shouldn't be an issue. I mean an Xmaxx geared for 55 mph isn't unreasonable at all, the stock Velineon system gets pretty close to that?

 

[WickedFog]

I emailed them a couple years ago when I was researching our build. That's what the guy told me. He said it was fine for an X-Maxx as well though. But back then, there were also a mumber of people having trouble using the Max6 in the X-Maxx. You can also see the vehicles they recommend for them if you look at just the ESC's on their site. The Baja is one, which is pretty heavy at about 21 lbs.

Bottom line, it will work fine. But you are at the upper end of it's limit. It's just when it comes to the ESC, I always want to go with a bit of overkill.

And I doubt the ESC is causing cogging as well. Unless it has a problem delivering the amperage at startup for some strange reason.

 

[KnowAir]

I emailed them a couple years ago when I was researching our build. That's what the guy told me. He said it was fine for an X-Maxx as well though. But back then, there were also a mumber of people having trouble using the Max6 in the X-Maxx. You can also see the vehicles they recommend for them if you look at just the ESC's on their site. The Baja is one, which is pretty heavy at about 21 lbs.

Bottom line, it will work fine. But you are at the upper end of it's limit. It's just when it comes to the ESC, I always want to go with a bit of overkill.

And I doubt the ESC is causing cogging as well. Unless it has a problem delivering the amperage at startup for some strange reason.

I can agree that overhead is always a good idea with these things. Like I mentioned before, when fully loaded with snow, the Xmaxx is quite heavy, LOL. TBH, even the stock Velineon 8s never seemed to mind the snow, but the Max 6/Firma 160 definitely seems to have a little for "snap" to it. For what the OP is after, Max 5 makes more sense. Might want to start looking into diff upgrades as well.. In stock form, the Xmaxx has been a real treat to own for me. Mine is 3 years old now, has eaten a few pinion gears, sets of bearings, and recently I had to replace the rear ring/pinion gears, but man, it has been so much fun! No regrets!

 

[rc-enthusiast]

Does it cogg when set back to stock? Punch 5?
I'm guessing you've gone thru the programming to verify it didn't come to you with "odd" settings?

I've got defective gear, brand new, before. I wouldn't place ALL my confidence there either.

I don't know this gear well enough to be of much help here I'm afraid.

I don't know what the best setup would be on programming all the options in the esc, I'd love if someone could give me a great basher setup on all the options on what they need to be set too. And my gears are mint.

 

[KnowAir]

I don't know what the best setup would be on programming all the options in the esc, I'd love if someone could give me a great basher setup on all the options on what they need to be set too. And my gears are mint.

Can you post a video of it? That may help. If you have a YouTube account, upload it there, then post a link to YT on here.

 

[rc-enthusiast]

Well, I would not think the ESC being slightly underrated for this application would be causing your cogging issue. The Max5 combo I was saying I would go with comes with a 56118 motor, which would have a lot more torque, since it has roughly a 30mm longer can. The longer the can, the longer the magnets are inside, which will give the motor more oomph. The difference in ESC's however is 50A, which means the Max5 will be able to handle a much heavier rig. It would be overkill since the Max5 would be right at home in an 8S Kraton, which is a much heavier vehicle stock, but it would be much safer then using an ESC that is right on the edge of being powerful enough. Could your current ESC be experiencing a brown out and suffering an amperage spike when you first hit the trigger? Possibly. That's why I suggested you contact Hobbywing and see if they can give you any ideas.

If you do notice a difference, then I would suspect something is wrong with that other ESC. If it doesn't fix your issue, try a slightly smaller pinion/bigger spur combo. If that doesn't fix it, my guess is your motor is struggling. I would have personally contacted HW first before buying a new ESC.

Ok I'm gonna call hobbywing, I already ordered the max5 esc to put on my 5690 motor I feel like I should have just went with a max5 combo for the xmaxx from the beginning. Do you think the 56118 motor would be more appropriate than my 5690 with the max5 ?

 

[rc-enthusiast]

Can you post a video of it? That may help. If you have a YouTube account, upload it there, then post a link to YT on here.

When i get home today I will try posting a video of it, I don't have a youtube channel is there another way?

 

[KnowAir]

When i get home today I will try posting a video of it, I don't have a youtube channel is there another way?

Not that I know of, maybe someone else knows.
I have been reading up on the cogging issue on the internet. Seems HW did have some known cogging issues early on with the G2 ESC's, best bet would be to find out what firmware version yours is running and whether that is the lastest version or not. I think you should be able to see all that through the HW app. Next thing to try would be a smaller pinion I suppose. That's assuming you don't have a voltage supply issue going on, such as weak battery, bad connector or solder joint. I understand your frustration, patience is a virtue, that I don't possess, LOL.
This cogging, just on take off, or every time you mash the throttle? Like I said, I have read reports from folks having a delay in throttle response with the G2 esc's, supposedly fixed by an HW firmware update. I don't have any G2 myself, just trying to help.

 

[KnowAir]

Oh, and also if you have the "punch" level turned up, try turning it down and see if that helps alleviate the cogging.

 

[332_RC]

When i get home today I will try posting a video of it, I don't have a youtube channel is there another way?

I got Imgur to work on here, but the app is garbage to make videos with. It stopped working or loading my media. But an Imgur made vid app would load & work here. It may work on your phone

 

[rc-enthusiast]

Not that I know of, maybe someone else knows.
I have been reading up on the cogging issue on the internet. Seems HW did have some known cogging issues early on with the G2 ESC's, best bet would be to find out what firmware version yours is running and whether that is the lastest version or not. I think you should be able to see all that through the HW app. Next thing to try would be a smaller pinion I suppose. That's assuming you don't have a voltage supply issue going on, such as weak battery, bad connector or solder joint. I understand your frustration, patience is a virtue, that I don't possess, LOL.
This cogging, just on take off, or every time you mash the throttle? Like I said, I have read reports from folks having a delay in throttle response with the G2 esc's, supposedly fixed by an HW firmware update. I don't have any G2 myself, just trying to help.

Yeah so the cogging is only for a split sec or 2 when i go tapping full throttle from. A stand still. And I'm positive I'm updated to latest version as well as my solder joints are beautiful. I'm a soldering perfectionist and with my axiun t3a with a 245 handle and a 5mm chisel tip I can make beautiful solder joints. But I can also do the same with my portable ts101 soldering pen with a big tip as well. All about heat transfer.

 

[rc-enthusiast]

The heaviest vehicle HW recommends for the Max6 is around 22 lbs. The X-Maxx stock, minus batteries is 19.1 lbs. Add a few aluminum upgrades and batteries and you're pushing the limit.

Well I just ordered a new max5 and 56118 motor all g2 newest versions and sensored. We gonna find out what that big boy setup can do. With same gearing I suspect similar top speeds 55mph ish but torque should be better I'd think. And i will always have the option to get real stupid on 12s lol.

 

[KnowAir]

Yeah so the cogging is only for a split sec or 2 when i go tapping full throttle from. A stand still. And I'm positive I'm updated to latest version as well as my solder joints are beautiful. I'm a soldering perfectionist and with my axiun t3a with a 245 handle and a 5mm chisel tip I can make beautiful solder joints. But I can also do the same with my portable ts101 soldering pen with a big tip as well. All about heat transfer.

You cleared up the soldering query, LOL. If I can make it work with a 40 watt Weller..
So what ur using now is G2 motor and esc w/sensor wire connected? I have seen posts from unhappy users over on Arrma forum about the Max 6 G2, perhaps it really isn’t enough?
One sure way to be sure it’s not gearing would be to drop the pinion down a couple teeth, but given the system you already have I don’t find that acceptable. I’m curious if the same would happen with a G1 uncensored setup. Oh well, if the Max 5 doesn’t do it, Castle sure will. Shouldn’t be needed though.

 

[rc-enthusiast]

You cleared up the soldering query, LOL. If I can make it work with a 40 watt Weller..
So what ur using now is G2 motor and esc w/sensor wire connected? I have seen posts from unhappy users over on Arrma forum about the Max 6 G2, perhaps it really isn’t enough?
One sure way to be sure it’s not gearing would be to drop the pinion down a couple teeth, but given the system you already have I don’t find that acceptable. I’m curious if the same would happen with a G1 uncensored setup. Oh well, if the Max 5 doesn’t do it, Castle sure will. Shouldn’t be needed though.

Omg if I install this max5 combo and bigger motor and find out i gotta go castle ima be pissed! I wonder if Amazon would take those 2 large combo returns. I literally didn't go with castle because of all the very negative things everyone says about their big escs. Motors seem to have solid reps but the big escs people be complaining about.

 

[KnowAir]

Omg if I install this max5 combo and bigger motor and find out i gotta go castle ima be pissed! I wonder if Amazon would take those 2 large combo returns. I literally didn't go with castle because of all the very negative things everyone says about their big escs. Motors seem to have solid reps but the big escs people be complaining about.

What I've read as well. For transparency, I'm a low budget basher.. a crumbsucker if you will, LOL. So I have never owned any Castle myself, never felt the need. A coworker of mine has run them, said they're garbage.. but then, he also loves Traxxas VXL! Forget that guy!!
As to Amazon returns, everyone says easy peasy.. I suspect the Max 5 combo will get ya where you wanna be. As to the Max 6 combo, would be fire in a 6s basher.. such as a K6 EXB or similar.. decisions.. LOL.

 

[KnowAir]

You can maybe swap the 5690 for a 4990 if you decided on the 6s rig.. or, maybe even downgrade the Xmaxx after you tire of the upgrade rabbit hole.. which is what I suspect ur headed for with the Max 5 combo in an Xmaxx. It'll take it for a while no doubt, but driveline components will be consumed on a regular basis I feel. One of the reasons my Xmaxx has been so great for me is that I accept it as it is, and it's limitations. Putting big power in will take it's toll. I suspect you know all that.

 

[332_RC]

The 4990 in the 6s Kraton is insane. The edge of overkill. I only run on 6s. The rig is a little too heavy now. Upgrades to the shocks & springs to compensate. Handles well. I wouldn't put another 4990 in a 6s chassis. 4278, yeah. It's fun, no doubt, the 4990, endless amount of power & speed.

 

[KnowAir]

The 4990 in the 6s Kraton is insane. The edge of overkill. I only run on 6s. The rig is a little too heavy now. Upgrades to the shocks & springs to compensate. Handles well. I wouldn't put another 4990 in a 6s chassis. 4278, yeah. It's fun, no doubt, the 4990, endless amount of power & speed.

I agree, but understand that some want their stuff to be as fast and badass as possible. Different strokes of course, no wrong way to have fun. Well for the most part..
I have a Rocket 4092 1650kv that seems to always get put into a rig, then taken back out after I get tired of shredding tires, LOL. I imagine the 4990 is much worse in regards. Crazy fast and fun, I just can't afford the carnage that comes with it. My story/problem, LOL.