whirring sound

[sr50_rider]

hey ppl i aint posted for a while because i have had no problems with my ditech ...BUT>> lol now when i go over 40 mph i feel a thumnp thump thump in my footwell and my scoot makes a whirring noise like every 2 seconds... like....vvvvvvv....vvvvvvvv....vvvvvvv....vvvvvvvv ...v.....vvvv.. coudl anyone explain this . my setup is completely standard except for my leo vinci zx exhaust. o yeah and it aint bin serviced for 12000km

[MOLECULAR-SR50]

I would chk my tires for wear...could have a flat spot or is it more of a mechanical noise?

[sr50_rider]

it is more of a mechanical noise

[sr50_rider]

but also what i am worried about is that my friend had a similair noise and his crank shaft snapped a few weeks later
... and to make it even worse i want to take it in for a service but my dealer has decided to stop their contract with aprilia therefore i do not know where to take my bike

[MOLECULAR-SR50]

can u do basic mechanic's?change belt,rear gear oil etc..could need some fluid's.Try 1 thing at a time.......good luck...

[JRTURBO]

Hi there

12,000 km with out servicing, that is asking for trouble.

Start by checking the obvoius parts, it would appear that your noise is related to a moving parts or parts, so start by checking the drive belt condition and the variator, check the rollers.
Next check the centrifugal clutchand the clutch bell

carefully inspect all visible moving parts, if nothing appears worn or damaged, perhas it would be better to take your bike to mechanic or the aprillia dealer.

Good luck

Joe Rubido

[phidauex]

You may need to change your drive gears, if the oil in there has gone bad.

I'd just start checking the variator and clutch parts for wear. If you don't find anything there, check the final drive gears for wear. Also, check to see if the brake pads are rubbing against the disk, or if the disk is warped at all.

I'd recommend servicing your scoot more often. Either suck it up and take it to a dealer, or get some tools, and take care of it yourself. Motorcycles and scooters need more maintenance than cars. On a car, if something breaks, you are most likely just going to end up on the side of the road calling a cab. On a motorcycle, if the same thing breaks you might end up dead.

peace,
sam

[sr50_rider]

thanx for the help guys i know i should get it serviced more often but i never have time due to wortk

[Crazy Canuk]

yo sr50 rider... i had tha same problem wit my scooter a while back... from the way you described it, all it is (i think) is that the rollers have a massive flat spot on them and that the cylinder is reaching full rpm (which explains tha vvvv v vvvvvv vvvv vvvvvvvv thing)... since tha rollers have a flat spot, they wont spread out as far meaning the vario cups wont push the v-snaar (belt) up to the top (does that make sense ppl?) also i was told that tha v-snaar (the belt) was wearing out when i first noticed this... but that wasnt true... kevlar is next to indestructable...
i hope it aint anything with tha cylinder... that would suck sooo much...
good luck wit ur scooter, take a look at tha transmission (buy a mhr vario if u got tha cash lying around...) and yah... hope it aint nuthin to serious...

mzzl

crazy canuk

[jd0g1]

Just had the same problem.
Check the center hole on the fixed pulley (one w/ fins) too make sure it is not out of round or spinning on the shaft when tightened down.
More than likely, you need rollers anyway, but it sounds like some of them may be flat or worse.
I would do this ASAP before you start destroying your vario assembly.