Why is there a gap in my center diff?

[hpitrophyflux]

So I've bought a new central diff for my 1/8 scale rc car and 2 issues why is there a massive gap and there's way to much space for it can anyone help

 

[luke66]

in between the gears?

 

[hpitrophyflux]

in between the gears?

In the first picture

In the first picture

So yes the diff is way to far from the actual spur itself and I'm not sure how to fix that and the other problems so how do I fix the solution

 

[tntpoof]

you need to slide pinion away from .losen grub screw slide pinion away from motor mount tighten grub screw

 

[hpitrophyflux]

Okay, I'll give this a shot what do I do after I slided the motor away from the central diff

 

[Lukedavis]

Okay, I'll give this a shot what do I do after I slided the motor away from the central diff

please clarify the issue. from what i can see, you need to loosen the gear that is screwed on to the motor and slide it out a little bit and also loosen the motor screws and move the motor closer to the spur gear which is the big gear an take a piece of paper and put it in between the pinion which is the gear that is on the motor and the spur gear which is the gear that is on the center diff and close them together by pushing the motor towards the spur gear and then tighten the motor back down and roll the car back and forth and make sure that there is no binding in the drive train then remove the piece of paper and you should be good to go.
just make sure everything is tightened back down and is put back together correctly
What car does this happen to be on?

 

[hpitrophyflux]

please clarify the issue. from what i can see, you need to loosen the gear that is screwed on to the motor and slide it out a little bit and also loosen the motor screws and move the motor closer to the spur gear which is the big gear an take a piece of paper and put it in between the pinion which is the gear that is on the motor and the spur gear which is the gear that is on the center diff and close them together by pushing the motor towards the spur gear and then tighten the motor back down and roll the car back and forth and make sure that there is no binding in the drive train then remove the piece of paper and you should be good to go.
just make sure everything is tightened back down and is put back together correctly
What car does this happen to be on?

On a hpi trophy flux. Now all I need to do is put the piece of paper which is another issue everytime I do it it goes wrong it's a new diff and I've never worked on this area before

please clarify the issue. from what i can see, you need to loosen the gear that is screwed on to the motor and slide it out a little bit and also loosen the motor screws and move the motor closer to the spur gear which is the big gear an take a piece of paper and put it in between the pinion which is the gear that is on the motor and the spur gear which is the gear that is on the center diff and close them together by pushing the motor towards the spur gear and then tighten the motor back down and roll the car back and forth and make sure that there is no binding in the drive train then remove the piece of paper and you should be good to go.
just make sure everything is tightened back down and is put back together correctly
What car does this happen to be on?

And wverytime when it goes wrong it gets stuck I fold the piece of paper twice I get the motor as close as possible then I screw the motor in then after I pull the piece of paper upwards

 

[Lukedavis]

w

On a hpi trophy flux. Now all I need to do is put the piece of paper which is another issue everytime I do it it goes wrong it's a new diff and I've never worked on this area before

And wverytime when it goes wrong it gets stuck I fold the piece of paper twice I get the motor as close as possible then I screw the motor in then after I pull the piece of paper upwards

what do you mean it goes wrong?

 

[hpitrophyflux]

I pull the paper up to set the gear mesh the gears get stuck after I pull the paper aswell

 

[Lukedavis]

I pull the paper up to set the gear mesh the gears get stuck after I pull the paper aswell

No you keep the paper in the gears while yoh are tightening the motor back down then you pull the paper back out

 

[hpitrophyflux]

I tighten it then pull the paper out like I said I haven't done this before and I'm just a teenager this is my first actual rc car. What I do is I pull the paper up after once I tightened it I made the pinion more closer you have whatsapp?

 

[tntpoof]

This is sounding like your motor shaft or your trans main gear shaft is bent.

 

[remote uncontrol]

Pardon my asking but why do you use the paper. I don’t use it and I haven’t had any issues. (To the best of my knowledge)

 

[Lukedavis]

Pardon my asking but why do you use the paper. I don’t use it and I haven’t had any issues. (To the best of my knowledge)

It helps you get the perfect gear mesh every time

 

[tntpoof]

you smash the paper between the 2 gears then you pull the paper out after you tighten the grub screws we have a messenger in this forum us it.its a thing use rcers use to get correct gear mesh

 

[Lukedavis]

I tighten it then pull the paper out like I said I haven't done this before and I'm just a teenager this is my first actual rc car. What I do is I pull the paper up after once I tightened it I made the pinion more closer you have whatsapp?

Okay you don’t have to use the paper. Just mesh it together and pull the motor back ever so slightly and make sure that there is wiggle between the pinion and the spur gear and you should be good to go.

 

[hpitrophyflux]

Okay you don’t have to use the paper. Just mesh it together and pull the motor back ever so slightly and make sure that there is wiggle between the pinion and the spur gear and you should be good to go.

Without paper how do I do that because I bought everything new and stuff this is a brilliant rc I want running again and ill do whatever.

 

[RustyUs]

Different RC in video, but same principle to use to get perfect mesh...

 

[Ramp addict]

The piece of paper or a piece of the packaging your diff came in is being used as a gap gage. At this point I would recommend YouTubing the subject and see if that helps. If it doesn't, I would recommend your local hobby shop then.

 

[DrFranz]

Seems to me that you need to slide that pinion out a bit. It's conflicting with the motor place as you can see, and it's not fully engaging the spur.