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05-20-2020, 04:42 AM
| #1 |
| Rock Stacker Join Date: Nov 2019 Location: uk
Posts: 88
|  Differential spider gears. upgrade
Are the RC4WD differential spider gears the only ones available? These are always out of stock. Done a search and can not fine anything else
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05-20-2020, 08:20 AM
| #2 |
| I wanna be Dave Join Date: Jan 2005 Location: Raleigh-ish vicinity
Posts: 3,846
| Re: Differential spider gears. upgrade
Some people say the HPI gears are stronger (part# 86014) but others say they are about the same as the stock gears. The life of any of the diff gear options will be greatly enhanced by the addition of aluminum diff cups. The HPI gears in Hot Racing diff cups seem to be holding up well in my truck. |
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05-20-2020, 12:07 PM
| #3 |
| Rock Stacker Join Date: Nov 2019 Location: uk
Posts: 88
| Re: Differential spider gears. upgrade
Being a beginner can I ask what difference using aluminium cups will do over the supplied kit versions. Are the aluminium ones softer so more give?
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05-20-2020, 01:21 PM
| #4 |
| I wanna be Dave Join Date: Jan 2005 Location: Raleigh-ish vicinity
Posts: 3,846
| Re: Differential spider gears. upgrade
The stock diff cups are plastic and can flex under the loads caused by monster truck tires. The flexing causes the mesh of the internal diff gears to get thrown out of alignment which will cause them to fail. The aluminum diff cups do not flex so the alignment of the spider gears does not change under load.
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05-20-2020, 02:34 PM
| #5 |
| I wanna be Dave Join Date: Sep 2011 Location: Douglassville, PA
Posts: 4,224
| Re: Differential spider gears. upgrade
GRC makes some steel diff gears. Not sure if they are any better or worse than HPI or Axial innards. https://www.asiatees.com/display?Axi...d=148796&pid=1 |
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