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April 29th, 2015, 04:12 PM   #1
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Noisy FE650, Tell me it's typical

So I've got an 2006 FE650E. It's been pretty nosey since I got it last fall. Has 200hrs on the clock. I know they're a noisy motor, but this is a bit noisier than my RFS KTM.

I just installed Taffy's Dual Valve Spring Kit, along with a new cam chain and tensioner. Figured that would have helped quiet it down, but it seems to be the lower right side thats making all the racket. Tell me what you think.

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April 30th, 2015, 01:23 AM   #2
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Couldn't tell much from the video, if anything when you were on the right hand side it sounded more like a loose bolt on the sump guard or similar.

Try pinpointing the sound by listening through a bit of tube or by putting one end of a large screwdriver to the cases and the other to your ear.
Might sound daft but when you get to the source of the noise you'll hear the difference.

Carl.
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April 30th, 2015, 06:15 AM   #3
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From what you can hear in the video that is the typical noise in a husaberg. I cant notice any weird noise like bad valve clearance, or cam chain tesioner... I think that noise you can hear in the video its normal.
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April 30th, 2015, 10:49 AM   #4
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Mine has a similar sound except its a bit "softer", it sounds like small sprockets rattling around on the lower left side, a local mechanic told me it is usual for these bikes.

I actually tore mine apart a few days ago and everything looked perfectly fine so I guess the mechanic was right.
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April 30th, 2015, 07:55 PM   #5
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the "typical" Husaberg noise occurs because the cam chain is not driven from a sprocket mounted directly on the crank

our cam chain drive sprocket is mounted on an intermediate shaft which is driven by the clutch basket

so there are 2 sets of gears to go through with some slack and fluctuating loads on the cam chain (both pushing and pulling) at idle due to the cam/valve springs make the gears clatter together

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May 28th, 2015, 12:05 AM   #6
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Originally Posted by feukfeuk View Post
Mine has a similar sound except its a bit "softer", it sounds like small sprockets rattling around on the lower left side, a local mechanic told me it is usual for these bikes.

I actually tore mine apart a few days ago and everything looked perfectly fine so I guess the mechanic was right.
Check the primary drive nut they can come loose and make a noise then the gear splits in half and wrecks the keyway on the crank.
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May 28th, 2015, 12:59 AM   #7
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Originally Posted by bushmechanic View Post
the "typical" Husaberg noise occurs because the cam chain is not driven from a sprocket mounted directly on the crank

our cam chain drive sprocket is mounted on an intermediate shaft which is driven by the clutch basket

so there are 2 sets of gears to go through with some slack and fluctuating loads on the cam chain (both pushing and pulling) at idle due to the cam/valve springs make the gears clatter together

What is my engine doing here ??

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June 4th, 2015, 06:36 AM   #8
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Bushmechanic.
Any idea why Mr. Gustavson and his friends designed it this way ??

>the "typical" Husaberg noise occurs because the cam chain is not driven from a sprocket mounted directly on the crank <

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June 4th, 2015, 07:44 AM   #9
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I suppose they could have tied the cam chain into the crankshaft... but then where would the balancer go? Also, they would have to move the water pump if they got rid of the intermediate shaft. Maybe that would have solved the shitty WP seal issue...


Also, my bike is loud immediately after doing a rebuild... so it's natural. Likely, as said above, it has a lot to do with the slack-tension-slack in the came chain during idle.
Originally Posted by HeimirBardason View Post
Bushmechanic.
Any idea why Mr. Gustavson and his friends designed it this way ??

>the "typical" Husaberg noise occurs because the cam chain is not driven from a sprocket mounted directly on the crank <

Heimir Bardason

Last edited by jmscrttndn; June 4th, 2015 at 08:45 AM.
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June 4th, 2015, 08:57 AM   #10
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When the cam chain wears the cam timing changes slightly, so having the cam chain as short as possible could reduce the effects a bit.
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