PDA

View Full Version : Lube for Chariot trailer ball/hitch cup?



skins_brew
07-02-2014, 02:14 PM
The googles is telling me that the ball is "self lubricating plastic." What the heck is that? Maybe my ball ran out of lube or something because my ball/hitch is squeky as hell!

Anyone have any idea what I should use without damaging the plastic?

Thanks!

Tim Kelley
07-02-2014, 09:25 PM
Maybe try giving it a good cleaning? I think lube would just attract more crud.

Harry Meatmotor
07-09-2014, 03:07 PM
The googles is telling me that the ball is "self lubricating plastic." What the heck is that? Maybe my ball ran out of lube or something because my ball/hitch is squeky as hell!

Anyone have any idea what I should use without damaging the plastic?

Thanks!

Here's your TMI for the day. Typically the material used in bike trailer hitches or seatpost mounted trailabike connections is called "self lubricating" because it has a very low coefficient of friction. Most likely, the actual material is polyoxymethylene (POM) also usually known by the Dupont trade name Delrin. It's naturally a white-ish with a little bit of yellow color and is very hard and durable. It does tend to oxidize (turns more yellow) and it'll get dry and brittle over time. I've found either using a good molybdnum grease or any other waterproof grease on larger bushings/fittings is fine - for smaller pieces a little TriFlow goes a long way. just wipe off any excess to mitigate contamination with road grit. Hope that helps!