Weird sound coming from rear wheel, Tech Help - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 12 (permalink) Old 01-31-2013, 07:56 PM Thread Starter
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Weird sound coming from rear wheel, Tech Help

There is a loud metallic popping noise coming from my rear wheel area. Like a bag of popcorn popping. I first noticed it on my way to work one day and I could hear it intermittenly during the ride and it was loud enough for me to hear it at freeway speeds. I have the bike up on the rear stand and in neutral and rotating the wheel by hand it still makes the noise, but if I loosen the rear axle nut out and rotate the wheel it goes away. Might check the torque spec on the rear nut and make sure I'm not over torquing the nut. I just replaced the chain and sprockets so it's not that and there isn't from what I can tell any noise coming from the rear brake caliper or bracket. I'm sure people around me could probably hear it, going down the road. I'm thinking the wheels bearings could be shot?? Don't really know what that sounds like. This is occurring in my 05 Sv650 with 15k mi. on the clock.


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post #2 of 12 (permalink) Old 01-31-2013, 08:09 PM
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Do you have a rear stand to put it up on??

If you do, rotate the wheel on the stand to see if you can replicate the noise.



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post #3 of 12 (permalink) Old 01-31-2013, 08:37 PM Thread Starter
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Weird sound coming from rear wheel, Tech Help

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Do you have a rear stand to put it up on??

If you do, rotate the wheel on the stand to see if you can replicate the noise.
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post #4 of 12 (permalink) Old 01-31-2013, 08:47 PM
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My apologies...wheel bearing would be my call then, especially if it goes away after you loosen the axel



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post #5 of 12 (permalink) Old 01-31-2013, 08:49 PM
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If you suspect the bearings, pull the rear wheel and cush drive, and rotate the bearings by hand to feel if notchy or roughness during rotation.
Also inspect the grease seals for grease seepage that may indicate worn seal lips.
The bearings should rotate nice and smooth. Same for the cush drive bearing.

Also, while the chain and sprockets may be new, was there no chain slack?
I've had that happen to me by a shop.
I babied it a couple of miles home and added the proper amount of chain slack.
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post #6 of 12 (permalink) Old 01-31-2013, 08:53 PM Thread Starter
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Weird sound coming from rear wheel, Tech Help

There is ample chain slack, not a worry there. My next step is going to pull the wheel and physically check the bearings for movement and the seals.


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post #7 of 12 (permalink) Old 01-31-2013, 11:02 PM
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There is ample chain slack, not a worry there. My next step is going to pull the wheel and physically check the bearings for movement and the seals.


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Make sure your cush drive rubbers are in good shape. I had an F4 once that had a bad one causing racket back there



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post #8 of 12 (permalink) Old 01-31-2013, 11:15 PM
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.....moved to RC51 Tech Talk.
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post #9 of 12 (permalink) Old 02-02-2013, 06:20 PM Thread Starter
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Weird sound coming from rear wheel, Tech Help

Culprit found. The right outer wheel bearing is toast. It's loose and movement is very notchy. I've never replaced bearings before myself and I'd like to do it myself this time. What special tools do I need to remove and press the bearing In?
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Last edited by tactikool; 02-02-2013 at 06:23 PM.
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post #10 of 12 (permalink) Old 02-02-2013, 06:43 PM
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A long taper punch to remove the bearings I've also used a long bolt as a punch, the flanged end has a nice lip to get a purchase on the bearing race.
I've used old sockets and extensions for installing bearings of proper sizes works in a pinch. But I would consider purchasing a good bearing driver kit as they are not too expensive and it's something you will use again and again.

You can use a heat gun to expand the bearing area on the wheel, putting the bearings in the freezer help with ease of install.

Remember if a bearing is on a shaft you do not exert pressure on the unsupported race, likewise a bearing going into say a wheel hub the unsupported race is the center one.



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