Clicky Transmission/Driveshaft

[TITANIUM94010]

So I know that this has been asked and solved before.
Taking apart the transmission and reassembling it solves the clicking issue, but it just keeps coming back and reassembling the transmission after every 2 packs is starting to get annoying. :x

Does anybody have a permanent solution to this? I did notice that my driveshafts were wobbly, maybe that's part of the issue but I'm not sure.

I did lose one of those tiny washers on the 3 gear tranfer case, but it dosen't seem to be effecting anything and I've got new ones backordered.

A little help?

 

[23drumerboy]

So I know that this has been asked and solved before.

Taking apart the transmission and reassembling it solves the clicking issue, but it just keeps coming back and reassembling the transmission after every 2 packs is starting to get annoying. :x



Does anybody have a permanent solution to this? I did notice that my driveshafts were wobbly, maybe that's part of the issue but I'm not sure.



I did lose one of those tiny washers on the 3 gear tranfer case, but it dosen't seem to be effecting anything and I've got new ones backordered.



A little help?

I noticed a lot of the sounds I was hearing on my sport were solved by fully disassembling at least the rear preferably both drive shafts, the little plastic collar around the end that the pin goes through to hold it in place comes off then you push the pin out of the metal sleeve that's left, then the joint itself comes out and you'll notice inside both cup type pieces there are tiny fine little particles of ground up sand at least in my case so a simple spray and re-lube didn't fix it once I realized just how much dirt was stuck in there and having to physically brush it out with q-tips toothbrushes etc I solved a lot of the noise.

R.C. means both;Remote control, and Rock Crawler.

 

[Fricker08]

Are you indexing all the gears and output shafts? When I built mine, I read that they were sensitive to that. So between that and some good marine grease I never had an issue


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[TITANIUM94010]

Are you indexing all the gears and output shafts? When I built mine, I read that they were sensitive to that. So between that and some good marine grease I never had an issue


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What do you mean by indexing gears? I googled it and didn't get much. The gear mesh is good and the shift works smoothly. I regreased the whole thing with marine grease a bit back.

I'll check the driveshafts, mine are pretty clean but the sound does sound like its coming from the more rear side of the transmission/driveshafts.

 

[23drumerboy]

What do you mean by indexing gears? I googled it and didn't get much. The gear mesh is good and the shift works smoothly. I regreased the whole thing with marine grease a bit back.



I'll check the driveshafts, mine are pretty clean but the sound does sound like its coming from the more rear side of the transmission/driveshafts.

The crappy part about it, is that sometimes if there's sand within a bearing, you won't hear it unless there's a load on that bearing meaning some weight while it rotates

R.C. means both;Remote control, and Rock Crawler.

 

[Fricker08]

There’s a couple articles here in RCC about it. One guy did some shimming but what I’m talking about it making sure the pin holes for the drive shaft are lined up for front and rear output shafts. Also lining up the pin holes on the axles with the pin holes on the trans if that makes sense. If not I’ll see if I can find the articles


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[Benp]

I “think” what Fricker is describing is also known as “driveshaft phasing” or driveshafts “in phase.” I “think.”

Meaning that the driveshaft pinholes line up or are “in phase” from differential to differential.

This all starts at the transmission’s outputs.

This is a new take off Sport/single speed trans. I got off eBay.

You can see that the driveshaft pin holes are lined up, phased or the same orientation.

Actually, I think it’s off one tooth but it’s 100% better than my stock sport trans that’s off 90 degrees and clicks pretty good.

My plan is to tear my stock trans apart and get the outputs phased to see if it helps or hopefully resolves the clicking.

I do not know if this would be the same procedure for the 2 speed trans or not. I have no experience with that.

Hopefully this helps and is what Fricker is talking about.

ETA - I reread your original post and had initially glossed over some things.

If you’ve been refreshing your trans on a frequent basis I’d think you’ve got the outputs phased.

The missing shim though.

You refurb the trans, pack it with grease, and the tolerances are tightened up. Clicking stops.

Grease dissipates after use, loosens up and clicking starts.

Here is a fantastic thread regarding clicking. I mean awesome.

Transmission Clicking Fix
https://r.tapatalk.com/shareLink/to...ead.php?t=618793&share_type=t&link_source=app

All of shims needed are listed by part numbers.

Good luck.

 

[Fricker08]

Hey thanks, that’s exactly what I was talking about. Mine was a 2 speed, and didn’t have any problems.
Hopefully with some shimming and phasing it will be good


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[ScaleLifeNewbie]

I “think” what Fricker is describing is also known as “driveshaft phasing” or driveshafts “in phase.” I “think.”

Meaning that the driveshaft pinholes line up or are “in phase” from differential to differential.

This all starts at the transmission’s outputs.

This is a new take off Sport/single speed trans. I got off eBay.

You can see that the driveshaft pin holes are lined up, phased or the same orientation.

Actually, I think it’s off one tooth but it’s 100% better than my stock sport trans that’s off 90 degrees and clicks pretty good.

My plan is to tear my stock trans apart and get the outputs phased to see if it helps or hopefully resolves the clicking.

I do not know if this would be the same procedure for the 2 speed trans or not. I have no experience with that.

Hopefully this helps and is what Fricker is talking about.

ETA - I reread your original post and had initially glossed over some things.

If you’ve been refreshing your trans on a frequent basis I’d think you’ve got the outputs phased.

The missing shim though.

You refurb the trans, pack it with grease, and the tolerances are tightened up. Clicking stops.

Grease dissipates after use, loosens up and clicking starts.

Here is a fantastic thread regarding clicking. I mean awesome.

Transmission Clicking Fix
https://r.tapatalk.com/shareLink/to...ead.php?t=618793&share_type=t&link_source=app

All of shims needed are listed by part numbers.

Good luck.

Oh wow, thanks for this Benp!

I didn’t even know this is something that needs done. I’ll definitely me tearing my tranny apart and fixing it, even though I don’t have any clicking.


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[Inspector86]

One other thing to look at is the pinion gear on your motor. If it is set too deep the grub screw will click on the spur gear.

 

[twade984]

One other thing to look at is the pinion gear on your motor. If it is set too deep the grub screw will click on the spur gear.

Yes, and since you can’t see it when it’s mounted, it’s a little tricky to get right sometimes.

 

[Benp]

One other thing to look at is the pinion gear on your motor. If it is set too deep the grub screw will click on the spur gear.

Sorry if this is dumb, but what do you mean by “setting the pinion too deep?”

Thanks!

 

[23drumerboy]

Sorry if this is dumb, but what do you mean by “setting the pinion too deep?”

Thanks!

Either too far in-towards motor? Or too far "out" on the motor shaft? I cant decide either but would love to learn the terminology!

R.C. means both;Remote control, and Rock Crawler.

 

[Inspector86]

Shallow or deep simply refers the alignment of the pinion gear relative to the spur gear. If the pinion is set too shallow there is simply not full tooth engagement with the spur gear. However, If the pinion is set too deep the spur gear teeth will come in contact the hub section of the pinion gear, the section where the grub screw is located. You can get away with the pinion being set too shallow, but if the pinion is set too deep the spur gear teeth will run in contact with the hub and possibly the grub screw resulting in wear on the edge of the spur gear teeth as well as excessive noise.

 

[23drumerboy]

Shallow or deep simply refers the alignment of the pinion gear relative to the spur gear. If the pinion is set too shallow there is simply not full tooth engagement with the spur gear. However, If the pinion is set too deep the spur gear teeth will come in contact the hub section of the pinion gear, the section where the grub screw is located. You can get away with the pinion being set too shallow, but if the pinion is set too deep the spur gear teeth will run in contact with the hub and possibly the grub screw resulting in wear on the edge of the spur gear teeth as well as excessive noise.

Thank you @Inspector86

R.C. means both;Remote control, and Rock Crawler.

 

[Benp]

Shallow or deep simply refers the alignment of the pinion gear relative to the spur gear. If the pinion is set too shallow there is simply not full tooth engagement with the spur gear. However, If the pinion is set too deep the spur gear teeth will come in contact the hub section of the pinion gear, the section where the grub screw is located. You can get away with the pinion being set too shallow, but if the pinion is set too deep the spur gear teeth will run in contact with the hub and possibly the grub screw resulting in wear on the edge of the spur gear teeth as well as excessive noise.

Gotcha!

Thank you for the explanation!

 

[TITANIUM94010]

I ordered some Traxxas 1985 shims, they come in a pack of 20.

They'll work for the transfer case shimming, but will they work for the main transmission shimming?