During "Coaster Stock 2010", I got to spend some time underneath Intimidator's loading platform.  These "drive wheels" sit above the rails and support almost all of the train's weight.  The top wheels appeared brand new, but the bottom ones showed a good deal of wear despite the fact that the coaster had only been open for four months.

Replacing wheels is very common on a roller coaster such as this one.  With three trains, the total number of wheels being used at one time on Intimidator is 324!  In fact, the maintenance supervisor told me that it is common for work to start on the ride four or five hours before it opens to the public.

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©2013 Joel Rogers.