Little help with the T4.1

[fiveonomo]

Today I was running like normal and it started making a noise like a plastic gear that was skipping or beginning to strip out. It would really only occur when I got on it or in a hard turn getting on it. If you pick it up and floor it you hear nothing, business as usual. It is like it only does this under a load.
I took the transmission apart and found nothing, I am doing it again now. Any idea what this is? By the end of the battery it was making the noise every time I gave it throttle and a lose of power as well. Would the motor make this kind of noise?
New to electric so I am looking for help. I got the old RC10 back together today and broke the new RC10T4.1 what a bummer. Any thoughts are appreciated.

[klavy69]

to me it sounds like the dif. issues since its only under loads. Could be slipper slipping too. Can you tell if the slipper is slipping too much before it gets up to speed?

Todd

[fiveonomo]

Excuse my ignorance but the diff would be the gear differential right?

[klavy69]

correct...

[fiveonomo]

Thanks!

[fiveonomo]

Hey guys, really looking for answers here. I don't want to be negative but I remember one of the reasons I got out of the hobby, i should not say that.....just frustrated.

I discovered a new hobby shop today not to far away which is awesome because the only thing we had was hobby town and I prefer to not shop there. This new shop had a ton of stock including all the parts I needed.

When i got home today I took the truck apart and opened up the diff. On the inside the gears looked a little stripped but nothing major just a little smoothed off. I had the diff rebuild kit so I decided to take all of the old out ( really brand new as I just bought the truck) and put in the rebuild kit I bought today. I followed the directions to the hilt and watched a video on you tube step by step and I am sure that I did this correctly. Everything went back together nicely and appeared to work correctly.

I put a fresh battery in it and began to run, slow at first but then I began to run the truck. Near the end of the battery life it began to make the same noise it was making before I rebuilt the diff. It comes on slowly but as I run the truck it gets worse. It sounds like a stripping noise from the rear end. The truck still runs and in a straight line I don't hear it. If I mash the gas or get on it in a turn I hear it again and I think I notice some power lose. What the heck???

I am new to electric. Is it supposed to make this kind of noise when I am running it? Are you not supposed to run this truck hard? The only thing I have done is run in the yard like i was on a racetrack. No jumping or hitting anything, just back and forth. Could the slipper clutch be causing this problem? Do I have it set wrong? Have I stripped it out again and if so why??

If I lightly hold the back of the truck to the ground in the beginning it would want to pull away out of my hand. If I hold it now with the same slight pressure the tires don't move and I hear the grinding stripping noise again. Have i stripped it again......why?? Is this just a delicate truck?

Guys what am I doing wrong? I am a 42 year old grown man who is somewhat mechanically inclined, this should not be a big deal. Looking for some help, I am at a lose now.

Scott

[teman]

What does the spur gear look? That's the gear that meshes with the motor pinion gear. The spur would typically go bad first, then the internal transmission idler gear which is the gear in the middle of the transmission.

You can always post photos here too, much easier to help that way.

[fiveonomo]

No gears of any kind on the truck look messed up, they all look new. I had the slipper clutch way tight and I think this was my whole problem, probably not even a messed up diff originally. I loosened it all the way out and then began to slowly tightening it a half a turn or so until I felt I got it right.
The truck seems to run great now. It does make some noise a little when I get on it hard, I think this might be the slipper clutch doing what it is supposed to do.....does this sound right? Could this have been my problem all along? Thanks for the help.

[klavy69]

I think this might be the slipper clutch doing what it is supposed to do.....does this sound right? Could this have been my problem all along? Thanks for the help.

yes, and yes. You'll hear it slipping a little before it fully grabs depending on how you have it set. That slipping sound in my experience is what I think is making the noise you hear. But again, this is a guess from what you are telling us without actually hearing the noise. I've also had a 'chatter' come from one of my b4 that I messed with back and forth til I finally replaced the slipper disk which was a little bit deformed. After that I haven't heard it make that kind of noise again.

Todd

[fiveonomo]

Thanks for the help! I am guessing that this has been the problem all along, I may take the slipper clutch off tomorrow and look for any deformities. Thanks again for the help.

[fiveonomo]

Well guys I am at a lose. The car seemed to run ok but after it heated up, 10 minutes or so of running, it begins to make this grinding/stripping/squealing noise and a lose of power because it appears to be slipping. I have watched you tube and set the slipper clutch up the way that many videos have shown and I have satbitmup the way the manual says. The damn thing just will not work. It will run but not when you get on it, you definitely could not race this thing in any way shape or form. If I hold it in my hand it is very quick and responsive, only when you put it on the ground does it start messing up.
Do you guys have an idea? What am I missing? Could my slipper clutch be bad? It looks brand new. So frustrated I don't know what to do. I don't mind working on them, in fact I like it, sit is part of the hubby. But I am 3 or so days in new and $20 worth of parts. Any thoughts?????

[jwscab]

it sounds to me just like you are running the pack down to the point where the motor will squeal because it's cogging and drawing enough current to drop the speed controller out of regulation. Meaning, the battery is dead.

[fiveonomo]

Fresh battery, run for maybe 5 minutes and then it begins to slip. If you hold it in the air , hit the throttle and barely hold the tires or a tire it will make the stripping sound and the tires will not move. It is important to note that any type of resistance on the tires will make it sound like it is stripping and the tires not move. I really appreciate the help but I don't think it is that. You have the diff gears and the slipper clutch that I have checked and rechecked, I have already replaced the diff. As the truck warms up and you give it throttle it will barely move. The motor is revving, screaming, wanting to run but it is not really going anywhere. Thanks again.

[scr8p]

And both the diff and slipper are still set properly when it begins to slip, or do they loosen up?

[fiveonomo]

Yes, everything appears to be set the same.