6 in. Pneumatic Wheel Hub Assembly

We on 1519 bought our first am-2469 6” pneumatic wheel hubs in 2013. We have never had one break on a robot when properly assembled and love their durability, ease-of-use, weight, and performance.

We have regularly used the 6” and 8” pneumatic wheels with these polycarbonate hubs - they are the only wheels we have used on our 8WD tank drive robots since 2016. We have been very happy with them and are running the 6” ones again in 2020, albeit continuing to use the old tire style.

I should note that the 6” pneumatic wheel hub is quite wide; the standard AM14U drive base may require widening the drive channels to fit those wheels in them. We use 4” wide drive channels on our custom sheet metal frame with these wheels and think it works great.

Our only suggestion is to replace the included thread-rolling screws with McMaster 96001A220, which are Torx Rounded Head Thread-Forming Screws for Plastic, Number 4 Size, 1' Long, as the screws which are included with the am-2469 hubs are very hard to install and remove without stripping out the Phillips head, particularly for high school students who don't have the experience of auto mechanics or the hand and grip strength of adult body-builders. The McMaster screws are pricey, but are a worthwhile upgrade from the stock screws.

The plastic rims for 6' pneumatic wheels are very light and fit perfectly. The only minor issue I have with the design is the valve stem is a bit difficult to access once assembled.

Poor Surface finish on part and hub broke during impact testing @ the #4 portion... Would not buy again.