New SSD SCX10 axle housings

[Capwn]

Picked up some foil tape to see how this may play out. With one complete wrap of the inner and outer bearings the fit is nice and snug. It took a bit of effort to get the bearing seated. All the play is gone (except for the very minimal play in the bearing itself).

Hmmm... I may just have to be a guinea pig on this one.


Axial SCX-10 G6 Rebuild by johnny anguish, on Flickr

What guinea pig?

In my original post about this issue I stated foil was my first fix, and it doesn't last..


Everyone seems to just miss that crucial part..

Its been tried. There is nothing to test. It doesn't work. If you people just eat this stupid "fix" up, SSD will just brush this issue under the rug. Buyers be damned.

 

[honchojoe]

Does super glue bond to copper? Thinking of trying the copper tape then gluing them in. The adhesive on the copper tape should stop the gearing from slipping and the tape should make it tighter and be held in place by the glue.

 

[aeiou]

We have been looking into this and doing some tests...

Thanks for responding to our concerns. I can't say that I'm thrilled with your response, because I'm still left with 4 SSD housings I can’t use. But, I do appreciate the fact that you didn't ignore the issue as well as your willingness to provide solutions.
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Your short-term recommendation of using tape doesn’t work for me. Tapes, shims and adhesives are not viable solutions for my builds. They all have limited effectiveness and /or shortcomings as already mentioned in this thread. That said, I’m glad to hear that you’ll eventually be implementing a more long-term resolution. Retooling to address the tolerance issues is really the only true fix. Perhaps while you guys are at it, you might consider a larger inner pinion bearing as well.
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Here are a couple of additional thoughts:
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Firstly, it does not seem a great number of users have had this issue.

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I don't know how many folks have reported this issue to date, but it could just be timing. I say this because it would appear that there are at least 2 distinct groups of users – casual/mild use and competitive/heavier use. The latter group appears to be the ones experiencing the negative impact of the issue right now. Chances are, however, there are others who will eventually get to that failure point as well.<o></o>

Even when the bearings are super tight the pinion shaft will still have some play as bearings also have play. So a lot of the movement comes from the bearings anyway.

<o></o>
I have to disagree with that second sentence. With a new set of Axial housings and new bearings, for example, there's very minimal play in the shaft. While even new bearings have some slight play, the orientation of the 2 pinion bearings negates most of the play/wobble of the inner races once the pinion is installed. If you look at the video posted earlier in this thread by JohnnyAnguish, you can clearly see that it's the entire bearing moving, and that movement is considerable. Pinion bearing tolerances are critical and there’s way too much movement to have any sort of reliable gear mesh.<o></o>

 

[Ant Chaser]

Yes I understand the frustration and you may call me a washed up old man but I'm just trying to find solutions that may help you until SSD hopefully solves the problem---
Pull the pinion tight against the face of the inner bearing. Then fill the space between the face of the outer bearing and the end of the drive shaft with 5x7x0.02 shims. It will not be so tight that it will impede the rotation. This will hold the inner bearing from moving in and out. There still could be some play of the inner bearing, but not much.
Just another thought.
Tomas

 

[Gunner1]

Followed this thread for a bit. I'm a newbie here but I have a ton of engine machining experience. Sometimes we use to get Aluminum heads with the ID for the valve seats just a couple of thou to big for the proper crush. we did the JB weld thing and it did work. But we came up with one which worked much better, We took a hardened prick punch and dimpled the ID of the hole and did the same on the hardened seats, Not a lot but just enough to turn it into a proper press fit that held under the thermal and shock loads. It is a cheap fix if you want to give it a try. If anyone has access to a Knurling tool you could knurl the OD of the bearing slightly. It is really hard to do steel races but I bet a valve guide knurler would expand the seat enough to make it stay seated better. You get creative when the last time a part was made was 40 years ago and you have to make parts fit.
Bob

 

[Col_Sanders]

Yes I understand the frustration and you may call me a washed up old man but I'm just trying to find solutions that may help you until SSD hopefully solves the problem---
Pull the pinion tight against the face of the inner bearing. Then fill the space between the face of the outer bearing and the end of the drive shaft with 5x7 shims. It will not be so tight that it will impede the rotation. This will hold the inner bearing from moving in and out. There still could be some play of the inner bearing, but not much.
Just another thought.
Tomas

They are showing the bearing being wobbly, allowing the pinion shaft to move all over, not just in and out.

I have some of the Loctite bearing compound here and it works excellent on steel/aluminum but I'm not sure how it would effect plastic.

 

[JohnnyAnguish]

I have some of the Loctite bearing compound here and it works excellent on steel/aluminum but I'm not sure how it would effect plastic.

I did a quick look and it saw somewhere that it is safe for and can be used on plastic.

 

[Ant Chaser]

Yes I understand the problem-- in/out and wobble. The bearing is loose in the housing. The space is micro. The idea of holding the pinion from going in and out also holds the bearing a little tighter in place. If the bearing is held in place the micro side to side movement [not counting the normal bearing movement] should be at a minimum. Just my thought.
Keep the ideas coming and We may find a workable temporary Non-destructive solution.
This axle housing with the removable diff cover is a great idea. I must think and hope that SSD is watching this and will come thru and resolve the problem soon as possible.
Tomas

 

[Col_Sanders]

I did a quick look and it saw somewhere that it is safe for and can be used on plastic.

Then it would be a good option. Too bad it isn't cheap and/or available in a small enough package economical for RC use.

When replacing wheel bearings in my RZR, I could grab the tire when everything was together and have a fair amount of slop, but once I started using the bearing retaining compound like Polaris recommends, I never had the slop anymore on new bearings.

 

[JDintheTJ]

So how long till we see a SSD D44? Maybe even a D44 that works with the old Scx10 platform?

And on another note I just superglued my bearings into the D60 housings. Hoping that if they ever need to be removed and abrupt tap will knock them out without destroying the housing.

 

[rjwalker]

So how long till we see a SSD D44? Maybe even a D44 that works with the old Scx10 platform?

And on another note I just superglued my bearings into the D60 housings. Hoping that if they ever need to be removed and abrupt tap will knock them out without destroying the housing.

Shoo goo or E6000 works good to as said back away's in this thread,, just don't put but a tiny bit on outer edges of bearings or housing your choice of which way is easier for you to do but just do one or the other.. Then put bearings in housing making sure there seated or all the way in put a piece of tape to hold them in if you need and let dry over night before putting together.
But I'm sorry this is not what we should have to be doing cheap,, nice looking or what ever,, the point is they need to FIX the problem!!! and everybody well be happy Period I'm sure there still going to be angry people that lost gears and other parts and I really can't blame them.. I'm very very surprised they have let this go this long and not just said Yes we are in the process of fixing them in molds I'm sure they have noticed they are starting to get some nice competition out there as far as axles go

 

[XSRCdesign]

Didn't he already say they were making changes to the mold but it will take time?

 

[rjwalker]

Didn't he already say they were making changes to the mold but it will take time?

If they did my bad! I must of not seen and please don't get me wrong I like ssd just think they should have said that right in begining

 

[Capwn]

Update, Top Truck Challenge today finally got the JB weld to give up.. Another set of gears fried..

SSD PLEASE GIVE US A REAL FIX!!!

 

[Shinjari]

Capwn, what motor are you running? Has anyone else toasted gears? I know lots (myself included) are seeing the wobble/play in the gears but not sure if anyone else has chimed in about killing gears? If there are others what power are you running?

My SSD axled rig is running a holmes revolver 540, 2000kv on stock 87/20 gearing. And it's run well despite the pinion wobble. We have several guys running these axles in our group but mostly brushed motors (35t-55t) and none have blown a set of gears.

 

[Capwn]

Capwn, what motor are you running? Has anyone else toasted gears? I know lots (myself included) are seeing the wobble/play in the gears but not sure if anyone else has chimed in about killing gears? If there are others what power are you running?

My SSD axled rig is running a holmes revolver 540, 2000kv on stock 87/20 gearing. And it's run well despite the pinion wobble. We have several guys running these axles in our group but mostly brushed motors (35t-55t) and none have blown a set of gears.

Every single other person using this housing in the comp scene in Colorado has burned gears . EVERY SINGLE PERSON>.

NOt a single SSD housing owner here hasnt killed gears.

Motor shouldn't matter one bit..

 

[Shinjari]

I'm just curious bud, not saying the axles don't have an issue.

So these have been killing gears for you in comp situations. Trail rides, not so much?

 

[dpcardoza]

Every single other person using this housing in the comp scene in Colorado has burned gears . EVERY SINGLE PERSON>.



NOt a single SSD housing owner here hasnt killed gears.



Motor shouldn't matter one bit..

I haven't. 4 comps using OD/ud and 35t brushed motor.


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[Super]

I agree, it's not the motor that would cause it. The big difference would be comping or casual crawling. In a comp you are more likely to really push your truck causing the housing to be under way more stress.
Even if your gears haven't been destroyed yet, (and I say yet) I'm sure they will prematurely ware out.

 

[Sammy J.]

I haven't. 4 comps using OD/ud and 35t brushed motor.


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I've run three Colorado Scale Adventure Series events this year with these axles, HD gears and a HH PP 2700KV stubby. These events are very hard on my SCX10 but I haven't experienced this problem yet.

My housings were purchased in April.

I haven't competed in the Crawl Space TTC events in Colorado this year, but I have attended a couple of them. These events are brutal compared to what my truck has seen.



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