I have a 1993 CBR600 F2. I’ve just bought it. When I tried to pass inspection I couldn’t do it because my pipes were too loud; there were no license plate light and no chain guard. When I asked the guy who inspect the bike about any other possible problems he answered that everything else was fine. So I fixed the described problems and came back to the same guy. He checked everything again and said that my rear wheel ball bearings are not good . The rear wheel was playing about 1/16 of an inch. He said that it will get worse and the wheel may lock itself and I’ll fall. Also he said that he can change the ball bearing for around 150$ . After that I went to another inspection guy and he just looked at my turning signals and the brake light and gave me an inspection sticker. So I think was the first guy right about the ball bearings or he just wanted to get some extra money. Is it dangerous or it’s normal to have about 1/16 of an inch of play?
You really shouldn't have any detectable play. You could raise the rear up a little and check it yourself by grabbing the tire and trying to wiggle the wheel. If you notice any movement of the wheel without moving the bike your bearings are probably shot. Yes, it could be dangerous.
Let me get this straight... it's one down and four up, right?
That depends on how long you plan on riding "before you get it fixed'. if you mean a week or so, it should be fine. if you're thinking that you're going to get the rest of the riding season out of it, I wouldn't.
On a similar note, I had an '84 Honda VF700 that had a front wheel bearing 'issue' while riding on the highway at about 70 MPH. Needless to say, lifting 475 pounds of motorcycle off of myself after the front wheel locked up did not make for a good day.
It's a good idea to remember that when dealing with motorcycle maintainance, treat it like you might an aircraft. If something breaks in-flight, the result is usually catastophic.
Hawking wrote:
It's a good idea to remember that when dealing with motorcycle maintainance, treat it like you might an aircraft. If something breaks in-flight, the result is usually catastophic.
Exactly. You should fix it immediately.
“People demand freedom of speech as a compensation for the freedom of thought which they seldom use.”
- Soren Kierkegaard (19th century Danish philosopher)
It's a good idea to remember that when dealing with motorcycle maintainance, treat it like you might an aircraft. If something breaks in-flight, the result is usually catastophic.
That's very wise advice... should make it a sticky, IMO.
Let me get this straight... it's one down and four up, right?
Roller bearings are a class of bearing with multiple seperate rolling elements internal to the bearing itself. These include balls, tapered rollers, cylinderical rollers of various shapes and placement combinations of thses rollers in the bearing.
Most wheels use ball bearings as they offer decent load carrying capabilities with small contact areas for reduced friction. Cylindrical rollers can carry much more load, but also have more internal friction, especially at higher rotaional speeds. They tend to get hotter when spun too quickly.
BuzZz wrote:Roller bearings are a class of bearing with multiple seperate rolling elements internal to the bearing itself. These include balls, tapered rollers, cylinderical rollers of various shapes and placement combinations of thses rollers in the bearing.
Most wheels use ball bearings as they offer decent load carrying capabilities with small contact areas for reduced friction. Cylindrical rollers can carry much more load, but also have more internal friction, especially at higher rotaional speeds. They tend to get hotter when spun too quickly.
Ah. Thanks.
I think I was thinking of the sort you'd expect to find it a U-joint- Most likely the cylindrical. Makes sense, though.
. The rear wheel was playing about 1/16 of an inch. He said that it will get worse and the wheel may lock itself and I’ll fall. Also he said that he can change the ball bearing for around 150$ 
. After that I went to another inspection guy and he just looked at my turning signals and the brake light and gave me an inspection sticker. So I think was the first guy right about the ball bearings or he just wanted to get some extra money. Is it dangerous or it’s normal to have about 1/16 of an inch of play? 
