07-24-2016, 03:56 PM | #1 |
Rock Crawler Join Date: Dec 2014 Location: friendswood, TX
Posts: 932
| Diff Cup Problems |
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07-24-2016, 08:32 PM | #2 |
Pebble Pounder Join Date: Apr 2016 Location: Australia
Posts: 124
| Diff Cup Problems
Found one like that in my savage flux. All screws where loose. Quick tip just like wheel nuts, locktite |
07-24-2016, 11:09 PM | #3 |
Pebble Pounder Join Date: Feb 2016 Location: Stillwater
Posts: 153
| Re: Diff Cup Problems
think it may have broken when you were installing and just fell out in the diff or do you think it snapped during use? Sent from my iPhone using Tapatalk |
07-25-2016, 06:18 AM | #4 |
Rock Crawler Join Date: Dec 2014 Location: friendswood, TX
Posts: 932
| Re: Diff Cup Problems
it snapped during use. That cup has been in there a while and this was the first time I noticed diff fluid from the cup leaking so I started checking screws. After I took the cup apart I actually broke 2 screws. They were both only in about 2 or 3 threads.
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07-25-2016, 06:31 AM | #5 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Diff Cup Problems Quote:
The diff turns into a hydraulic chamber causing 1- screws to break !! 2- the inevitable lol leakage.. The diff needs to be vented before the ring gear is tightened... I use the set screw port ... I've tried to shed light on this before but it's hard to understand till you lose a plastic or aluminum diff cup !!! | |
07-25-2016, 07:25 AM | #6 |
I wanna be Dave Join Date: Jun 2013 Location: Ramona, CA
Posts: 2,178
| Re: Diff Cup Problems
Sucks they broke on you PMS. Personallyfrom experience using axial screws is like using their bearings, 50/50. I've been using Protek screws from Amain in my last 5 rigs with zero breakage. Every chance I get I replace the stock ones. That was just a plain old screw failure and nothing else.
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07-25-2016, 08:17 AM | #7 |
Newbie Join Date: Jul 2016 Location: calgary
Posts: 11
| Re: Diff Cup Problems
Every time I repair / rebuild something ( plastic part ) I use a tiny drop of CA on the screws or bolts . So far So good |
07-25-2016, 07:43 PM | #8 |
Rock Crawler Join Date: Dec 2014 Location: friendswood, TX
Posts: 932
| Re: Diff Cup Problems
I did vent through the screw hole in the cup like you instructed.
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07-25-2016, 08:48 PM | #9 | |
I wanna be Dave Join Date: Jun 2013 Location: Ramona, CA
Posts: 2,178
| Re: Diff Cup Problems Quote:
The grub screw is not there to prevent HL. It is there to install the pin for the Sun Gear. I only have experience in a few diffs and when i built my YXL i was like WTF is this non-sense. After looking at it it is just a shit design of a Diff housing. We all know the Axial plastic sucks and we alll know the hea generated by these diffs. i have said it before, the heat softens the plastic, the diff housing distorts under load, the ring gears walks and has a potential to ruin change and mesh and in Poor Steve's case break the inferior screws. Diffs i have had the pleasure to rebuild and build on multiple occasions and ALL do not have a grub/HL screw. Why if the screw is needed to prevent HL that these MFG's don't also have them? Losi 8 Losi 8T Losi 8T 2.0 Losi SCTE 2.0 Losi XXL Losi LST Losi XL Losi 5T Team Associated Rival Kyosho Mad Force Kyosho Twin Force Redcat Racing Chimera I could be totally wrong and i will glady slurp down a pot of crow soup with a boot, shoe and a hookers stiletto in it if you can explain it so i can understand not what hydrolock is but why Axial is the only one in my limited diff experience that used it. | |
07-26-2016, 12:01 AM | #10 |
Rock Stacker Join Date: Feb 2015 Location: Netherlands
Posts: 81
| Re: Diff Cup Problems
I do agree, but if I am not wrong my mad force ve also had a grub screw... Will have a look when I have time to open the diff.
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07-26-2016, 04:07 AM | #11 |
Quarry Creeper Join Date: Jan 2015 Location: Bucharest, Romania
Posts: 372
| Re: Diff Cup Problems |
07-26-2016, 10:58 AM | #12 |
Rock Stacker Join Date: Feb 2015 Location: Netherlands
Posts: 81
| Re: Diff Cup Problems I knew I had it right , those holes aren't for bleeding.... But only to 'mount' the pin for the diff gears, not only axial has this design. Nobody bleeds their diff normally the most important things is to fill properly and not use to much oil. Not every handling needs a mod, sometimes a clear mind also helps |
07-26-2016, 12:47 PM | #13 | |
I wanna be Dave Join Date: Jun 2013 Location: Ramona, CA
Posts: 2,178
| Re: Diff Cup Problems Quote:
I have had 8 diffs between my XXL and Muggy and non have a grub screw. I bet because of the age the previous owners upgraded. I know they did because Losi 8T2.0 diffs were in my XXL and 8B were in my Muggy. | |
07-26-2016, 02:09 PM | #14 | |
Rock Stacker Join Date: Feb 2015 Location: Netherlands
Posts: 81
| Re: Diff Cup Problems Quote:
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07-26-2016, 03:20 PM | #15 |
I wanna be Dave Join Date: Jun 2013 Location: Ramona, CA
Posts: 2,178
| Re: Diff Cup Problems |
07-26-2016, 08:09 PM | #16 |
Rock Crawler Join Date: Dec 2014 Location: friendswood, TX
Posts: 932
| Re: Diff Cup Problems
BHB's idea has sound logic to it so I did it. I don't know either if it is right or wrong or neutral.
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07-28-2016, 05:17 PM | #17 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Diff Cup Problems Quote:
I'm NOT claiming Axial or any other RC manufacture came up with this as a protocol .... I did...It was just something that I noticed that I wanted to share.. My buddy came over with a redcat diff and I drilled it out and installed a grub screw because it made sense ... Completely FULL diff with out pressure... | |
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