Talion Loud sounds while driving “ removed all diffs”

[A13art]

Okay so lately I have noticed that my car sounded louder then usual at first I thought it might of been the 17t pin gear seating in but ruled that out now. So next I thought maybe one of my difs needs a rebuild well I opened them all up and they all seem pretty clean to me. Now I would say they were pretty low on fluid tho. Not sure how much is best but can low fluid cause them to make noises. Or should I look into maybe getting a new bearings g set for everything next? Here are some picture also what do you guys recommend as far as fluid goes for best result.

 

[Tomberland]

My best bet is that the sound you are hearing is coming from the pinion and spur. The gear mesh is too tight maybe, or one or both of the gears are worn out. That was the case with my spur and pinion at least after 1 year of bashing. I recently replaced both my spur and pinion and everything is as smooth as ever.

Maybe it can also be the main input gear that is worn out. Especially the one in the rear tends to go bad every once in a while. It is this part:
https://www.arrma-rc.com/part/AR310498

So I would check the pinion and or spur, and the main input gear for wear. Good luck!

 

[A13art]

My best bet is that the sound you are hearing is coming from the pinion and spur. The gear mesh is too tight maybe, or one or both of the gears are worn out. That was the case with my spur and pinion at least after 1 year of bashing. I recently replaced both my spur and pinion and everything is as smooth as ever.

Maybe it can also be the main input gear that is worn out. Especially the one in the rear tends to go bad every once in a while. It is this part:
https://www.arrma-rc.com/part/AR310498

So I would check the pinion and or spur, and the main input gear for wear. Good luck!

They don’t seem bad but I will have to give a closer look

 

[Tomberland]

They don’t seem bad but I will have to give a closer look

No they don't look bad at all I must admit. So I guess your problem is not with worn out gears. Maybe too tight gear mesh? Does the nasty sound go away when you loosen up the gear mesh a little bit? Did you have a look at the main input gear yet? It can still be the cause too of the sound.

 

[A13art]

No they don't look bad at all I must admit. So I guess your problem is not with worn out gears. Maybe too tight gear mesh? Does the nasty sound go away when you loosen up the gear mesh a little bit? Did you have a look at the main input gear yet? It can still be the cause too of the sound.

They seem to look fine to me here are some pics. I’m kinda at a dead end really unless the low dif fluid can cause the sound I’m hearing and sluggish. I read that a receiver can cause it as well but no really good info to back that up.

 

[Dutch213]

those pics on the right do not look good...lots of metal...

 

[A13art]

those pics on the right do not look good...lots of metal...

The grey isn’t from metal shaving it’s the grease that’s in there. I tore down all three difs today and found out that the coupler for the dog bone not sure what the actual name is but I was trying to pull them out of the dif houseing and noticed that 3 of them felt tough to pull out so they must of got bent from bashing I guess. I really can’t even tell by looking at them but there is no other explanation to why there would be tension when trying to pull them out. I ordered the new parts and should be here by Monday. And also ordered a fast Eddie bearing set as well while I have all of them apart. So hopefully this will make it feel new again.

 

[Dutch213]

Mine were hard to get out too...Yours don't look bent but the bearing my be damaged...I swapped all my bearings with sealed ones as well.. That will prob help out....Dirt gets in there and can cause friction and heat.

 

[A13art]

Well as of right now that is the only thing that can make sense with what my issue is. These difs are meant to be shim by .5 of a mil so even the slightest bend that even the naked eye can see cam off set the spider gears. The only other thing I can think of is make were the locking pin is it rounded out making that part slight wider but better to be safe then to put it all back together and have to take it all apart again. Also one of the gear on the dif I noticed were ever so slight rounded so replaced that as well barly even noticed that as well.

 

[Tomberland]

It must be something to do with your bearings indeed. You excluded everything else, so there is not much more left that can cause the sound issues. Hopefully after you changed to a fresh set of bearings you are good to go once again! I use bearings from Aliexpress by the way. I ordered every size bearing that is in the Kraton/Outcast and Senton from Aliexpress and change them every once in a while when I'm doing maintenance on the cars. I mostly look for ABEC-3 or ABEC-5 quality bearings. The higher the ABEC number the better the quality. For our RC cars ABEC-1 is also oke, but I try to buy at least ABEC-3 quality for more peace of mind. Bearings from Aliexpress are cheap anyways in comparison to original arrma bearings or fast Eddy bearings for instance.