PatMarcus172
Active Member
- Messages
- 355
- Reaction score
- 306
- Location
- Solihull, United Kingdom
- Arrma RC's
- BigRock 4x4
- Talion EXB
- Vorteks
Dear Experts
Somehow or other, I trashed the rear diff in my Big rock and sure enough the main gear on the diff and the input gear were both toast, as several people suggested was the likely source of my grinding noises and lack of power.
So, I ordered a complete new assembly (with diff yoke) from a trusted RC Breaker, here in the UK. It was claimed to be brand new and looked in mint condition but I took it apart anyway, filled it up with 10K, checked all the bearings (and made sure there was a shim on one side) and put some red lithium grease on the gear. All fine.
Until I put it back together.
Now I know you have to put it back together with the right case on the right side but even so, as soon as I did up the case screws to anything approaching proper tightness the gears start catching and wont spin smoothly.
Drive shafts attached fine and these, too, are loctited on as Ive seen reccomended in countless "set up your Arrma" videos
So, I was faced with the dilemma of having a slightly loose case with screws which are "in" (and I have loctited just in case), or a properly tight case with catching gears that Im somehow hoping will "wear in".
I chose for option 1 but I don't feel good about it. Im worried that the case is gonna somehow come apart or at the very least leak grease all over the car.
Any thoughts as to what I might have done wrong ? Ive ordered a new diff yoke just in case (as theyre very cheap) and was considering maybe a GPM or Hot Racing one as an upgrade but they seem to have their far share of critics, too.
Somehow or other, I trashed the rear diff in my Big rock and sure enough the main gear on the diff and the input gear were both toast, as several people suggested was the likely source of my grinding noises and lack of power.
So, I ordered a complete new assembly (with diff yoke) from a trusted RC Breaker, here in the UK. It was claimed to be brand new and looked in mint condition but I took it apart anyway, filled it up with 10K, checked all the bearings (and made sure there was a shim on one side) and put some red lithium grease on the gear. All fine.
Until I put it back together.
Now I know you have to put it back together with the right case on the right side but even so, as soon as I did up the case screws to anything approaching proper tightness the gears start catching and wont spin smoothly.
Drive shafts attached fine and these, too, are loctited on as Ive seen reccomended in countless "set up your Arrma" videos
So, I was faced with the dilemma of having a slightly loose case with screws which are "in" (and I have loctited just in case), or a properly tight case with catching gears that Im somehow hoping will "wear in".
I chose for option 1 but I don't feel good about it. Im worried that the case is gonna somehow come apart or at the very least leak grease all over the car.
Any thoughts as to what I might have done wrong ? Ive ordered a new diff yoke just in case (as theyre very cheap) and was considering maybe a GPM or Hot Racing one as an upgrade but they seem to have their far share of critics, too.