Drive cup issue

uberfinity

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Arrma RC's
  1. Fury
What size would be acceptable and not introduce any binding?
 

ajdragon

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Hi

Some of the guys here on the forum are using HPI dog bones. I'll take a look and see if I can find there posts.
 

uberfinity

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I wonder if the cups are any better from HPI and if they are compatible with the arrma diff...
 

Dustin Mustangs

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Mine were getting chewed up like that when I was running blown out orings in the cups. New orings and no more damage. And you have to pull them out to really tell if they are damaged.
 

uberfinity

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Here is the stock measurements, looks like 80mm
Mine were getting chewed up like that when I was running blown out orings in the cups. New orings and no more damage. And you have to pull them out to really tell if they are damaged.
I would say this is considered "chewed up" 20160404_183037.jpg
 

Dustin Mustangs

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That is exactly what mine looked like when I was having issues. They are 1.99 a set so I stocked up and replace them on the regular. That is also a point they recommend oiling after every pack which I have now started doing and it seems to help them live longer.
 
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