Question about Razor MX500 Dirt Rocket
BEST SOLUTION GO TO A GOODWILL MOST OF THE TIME THEY HAVE-
BIKES FROM $10.00 TO $40.00 AND YOU LOOK FOR A BIKE
THAT HAS A GOOD BACK WHEEL AND YOU'LL HAVE EXTRA
PARTS HERE IS A LIST OF PLACES GOODWILL&THRIFT STORE&
SWOPMEET THAT HOW I FIX MY BIKES..
Posted on Jan 20, 2018
The problem is witht he flywheel on the rear wheel assembly. I had mine fixed by a professional last night (at a bike store). Razor uses a very cheap spring that is designed to fail and then to top that off did not use enough bearings as well (12 bearings short out of the factory). My son had also sprayed WD-40 all around the back axle (trying to make it faster). This is bad because, the bearings are packed in grease and WD-40 is a de-greaser. Never get WD-40 anywhere near your back axle!!! Anyway, the flywheel was way easier to remove than I thought. It is threaded onto the rim's axle shaft and just screws off. Once you get the flywheel, off you have to take it apart, fabricate a new spring (my son's new spring came from an old 10 speed's tensioning spring), reset the 3 pawls, repack the bearings, put the flywheel back together, and screw it back onto the wheel. I will post a YouTube video on this later. Hopefully this is enough info to get you started.
Posted on Nov 03, 2010
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