Hi all, im new on here! Just need some help with a problem!

I have recently aquired a cbr 600 f3
Rode it the day i got it, no problem, rode it a few days later and i noticed the chain slapping (i thought) so ive had the chain and sprockets replaced..

Went out on it tonight to test and im still getting a strane grinding/clicking/slapping noise from below.. sounds like the chain still..
Also the bike feels weired.. doesnt feel straight anymore, I checked the spacers which are both on the same (4 visible lines)

I am stumped.. Any suggestions would be great.

Thanks

 

Wheel bearings maybe?

 

+ 1 for wheel bearings

Recently, I had the same sort of symptoms on my CBR1000F and (almost) dismissed the noise only to have one of the front wheel bearings collapse and serious wheel wobble ensue

Lift the wheels off the ground and check that they spin smoothly - if not, replace those bearings quickly!

Cheers, SB

 

The "strange grinding/clicking/slapping noise from below", only heared when riding?
Or is it there when idling, as well? If so, it might be cam-chain tensioner (cct).
They can be problematic for the f3's.

Another thing to check is rear-wheel alignment. Go to the rear of the bike and
sight down the chain...are the sprockets and chain all in the same plane?
The marks on the sides of the swingarm/chain-adjusters are just 'ballpark'.
They are a rough approximate. You should always do the final adjustments, visually.

If you want the tires to track absolutely straight, check this link...
Learn Simple Motorcycle Wheel Alignment - Motorcyclist Online

The chain should have 1 1/8" of slack (I believe that's the factory spec).
With the engine NOT running, put the bike in 1st, push it forward to put the
load on the bottom run of the chain, then check the slack on the TOP run.

To check the wheel bearings, you'll need a stand to lift the rear-end.
Lift the rear, then grasp the wheel in both hands. Try shaking it side-to-side.
watch the axle, do you see any movement? If not you should be good.

Try checking those points first. That will give us a couple of easy issues,
off the list. The bonus...it's good maintenance for a newly aquired bike anyway.

Welcome and good luck, ern

 

Thanks for all the suggestions so quickly!
It is only when riding the bike, I will get it up on the rear stand later and try it out, from what I remember it wasnt so easy to spin the back wheel. Are wheel bearings easy to replace?
I will also measure the distance of the axle to swingarm on both sides, see if they are the same.

Thanks, Mike

 

Relatively easy to replace Mike.

Start with Naga_Thai's excellent How To and go from there.

Front https://cbrforum.com/forum/how-tos-8...r1000f-141529/

And Rear https://cbrforum.com/forum/how-tos-8...r1000f-141525/

Cheers, SB

 

So ive just checked out the bike..

Chain and sprockets look in line and straight,
rear wheel doesnt move or wobble if i try to move it side to side with my hands,

although when spinning the back wheel its quite an effort and it pretty much stops as soon as you let go.

As for the front.. i havent got a front paddock stand, but when moving the bike about you can definately hear a noise coming from there so im taking a guess that the front definately needs doing..

oh and the chain slack is 1' exactly, this will increase over time on its own?

appreciate the reply's,
Thanks again,Mike

 

Hey all,

I took the bike to a workshop and its all been sorted now :P
The problem??

COLLAPSED REAR WHEEL BEARING ! ! !

The brake caliper had seized too which didnt help! lol

Kudos to my local workshop though, very pleased with work done and cost

Hope this feed helps anybody else

Cheers, Mike

 

Glad you got it figured out & fixed.

As for the chain slack, older CBRs like the F2/F3/F4/F4i tend to like the slack adjustment on the more loose side of the adjustment. Often times when they're too tight, you'll get noise as well.

 

I've just recently bought a cbr600f 1998 (first bike) I've also got this strange clicking grinding noise! I tightened my chain last week and seemed to work but its gone back to the same problem again, I was hoping a new chain and sprockets would fix this. How did it get on after wards?