7 replies to this topic

[bjerk1 TT Member]

Hey,

im considering to buy a 2003 Husaberg 650. On this bike the owner has changed the bearings in the engine which obiously is a problem on these bikes. When the bearings is changed, is the engine then safe? no problems? whats the reason this happens with this engines?

And the Electric start.. why are these so bad? seems like every bike has problem with it. why? any upgrades to do?

need quick answer! i have this bike on hand!

thanks.

-Thomas

[backyard hack Get Help Now]

The earlier bergs had some issues ...

Have a look at the husaberg.org website

Edited by chooken, 02 September 2012 - 06:00 AM.

[nsman TT Bronze Member]

The crank bearings are undersized for this engine design,the crankcase has a reed valve that evacuates the oil from the crank so the bearings are not in an oil bath and the crank cases are too light to support the rotational forces with out flexing.The counter rotational crank balancer adds additional stress the cases are not able to handle.
The electric starter motor is fine but the one way bearing is under abnormal stress as it is designed to safeguard the primary drive,it has a low breakaway torque again to keep  the lightweight cases from flexing.

These motors are designed to run in mid range,as in enduro use.excessive rpm will be the undoing of this design.
Learn to kick start and use the electric only a restart.

[backyard hack Get Help Now]

The fellow above knows his stuff

I think the SEM ignition and delorto carb also proved to be suspect ??

[cycdude TT Newbie]

I think you will find the bearing issue comes from too small crank pin (big end) allowing the early model cranks (pre pork chop design) to flex and the brand of roller bearing fitted to the mains had a sharp shoulder which dug into the bearing surface under crank flex conditions and turned the hardening to chips. Also the roller bearings are running beyond there rev threshold in the position they are mounted in the smaller engines (400-550).

Cases can handle more horespower, older crankshafts cant. Do some research of the changes made around 2005.

[backyard hack Get Help Now]

More berg info http://husaberg.org/forum/

[MCVL TT Newbie]

Hey guys, do you know if it is possible to fit a stator, cdi, ignition coil and regulator rectifier from a diffrent model like lc4 into a 2001 FX650E, so that the lights could work? Should the flywheel be changed as well?

[nsman TT Bronze Member]

Pretty sure the fx650 came with full lighting equipment as standard equipment in 01- 03