quinnlouis Posted September 4, 2021 Share Posted September 4, 2021 (edited) EDITED Ive found the diff gear box which I presume is what's needed. What's the difference between 8381-100 and the 8381-125 as there both compatible. So after minimal research on here (I don't know much about RCs) I found a post on how to check the front and back diffs by putting front wheels on floor, rotating back ones and vise versa. Front 2 move and back 2 only the right moves when moving the left but when turning the right one the left struggles when doing as above. Does this mean it's not my diffs. What can I check next. Thanks. Edited September 4, 2021 by quinnlouis Quote Link to comment Share on other sites More sharing options...
Kpowell911 Posted September 4, 2021 Share Posted September 4, 2021 You said it sounded like they were skipping, you wont be able to recreate that by hand as its happening under load. All that test has proved is that the diff INTERNALS are ok, at least under low load. You need to pull the diffs out and examine the diff RING AND PINION gears, there maybe one or two chipped teeth 1 Quote Link to comment Share on other sites More sharing options...
Kpowell911 Posted September 4, 2021 Share Posted September 4, 2021 The gears I THINK you need to check look like these https://m.pl.aliexpress.com/item/4001032967809.html?trace=wwwdetail2mobilesitedetail the big one is the ring, and the small one is the pinion Quote Link to comment Share on other sites More sharing options...
quinnlouis Posted September 5, 2021 Author Share Posted September 5, 2021 Anyone? Do I need rear differential gear box? Quote Link to comment Share on other sites More sharing options...
Ant.p Posted September 5, 2021 Share Posted September 5, 2021 If it’s the diff ring and pinion, I believe the below link is a direct replacement, but this is from a quick google search, and I haven’t ordered from the linked supplier before. If nothing else, it shows you what the parts look like on your model. https://www.asiatees.com/display?DHK-Zombie-8E-(8384)-Parts-Hop-Ups-Upgrades&brand=DHK&model=Zombie+8E+(8384)&id=87415&pid=1 1 Quote Link to comment Share on other sites More sharing options...
turok007 Posted September 5, 2021 Share Posted September 5, 2021 2 hours ago, quinnlouis said: Anyone? Do I need rear differential gear box? remove the parts that are in the link above give them a very good clean and look for any issues or take some pictures. Quote Link to comment Share on other sites More sharing options...
Kpowell911 Posted September 5, 2021 Share Posted September 5, 2021 You need to strip the car down and examine the gears. No point buying anything till youve determined what it is causing you the issue Quote Link to comment Share on other sites More sharing options...
Juanmacine Posted September 5, 2021 Share Posted September 5, 2021 2 hours ago, quinnlouis said: Anyone? Do I need rear differential gear box? As other mates says to you, you need to disassemble the gearbox to see the possible issues. Follow your user manual exploided views. Quote Link to comment Share on other sites More sharing options...
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