CVT gearbox skipping when changing gear

[Sweaty_Doughnut]

I have a Suzuki Address automatic 110cc scooter. It's one year old and today started happening something strange with the gear box (my guess).When the bike is in stand still and I start accelerating slowly or rapidly, it starts smoothly and then between the first and the second gear I feel like a skip happening at the back-wheel. The feeling is like it looses power and then it pulls again. This doesn't happen on any other occasion. I changed the gear oil 3 moths ago, I used the Castrol engine oil in it.

Does anyone have a clue what could be the issue?

Thanks

[Polarbear]

Is it still under guarantee? If so, take straight back to dealers.
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Triumph Trophy Launch Edition

[Sweaty_Doughnut]

[duhawkz]

I was under the impression that they weren't allow to void a warranty if you don't have it dealer serviced, as long as you use a VAT registered garage and they use OEM parts.
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[WD Forte]

While I don't know the scoot I'm reasonable sure its a twist and go
so no first, second or any other 'gears' as such

There is usually a centrifugal clutch on the rear wheel which may be slipping or have dust in the casing causing erratic problems
It might need a new rubber band or rollers for all we know

I wouldn't say a scoots trash over such a minor problem as they're all pretty easy to whip apart and sort out
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bikers smell of wee

[G]

[Sweaty_Doughnut]

[Nobby the Bastard]

[Sweaty_Doughnut]

[G]

Did you check the steering head bearings yourself when you serviced it?
Did it mention to do this in the service manual? Normally they're checked at the first service.

None of that sounds like 'trash'.
That it was recalled, while it does point to some issues, is a good thing that they're sorting stuff out.

I'm a bit confused by you mentioning first and second gear. While some CVTs do offer fake gears, I can't see this bike having done so.

Further; had a look into it more; looks like a traditional scooter transmission.
First off... did you really change the gearbox oil and if so, what exact engine oil did you put in there?
That would definitely cause some issues I expect, presuming it works as all other similar bikes do!

Then... have you adjusted anything with the 'gearbox'? I would expect there are some checks in the service manual to do so.

Do you have a copy of the workshop manual you used for servicing?
I rather suspect you haven't serviced it correctly from what you're saying, which is why you've had these issues - and that being the case, very reasonably why they're refusing a warranty claim.

[Nobby the Bastard]

[Sweaty_Doughnut]

[G]

[stevo as b4]

Do you trust any mechanics or dealers, or even even specialist engineering firms or competition shops?

The reason I ask, is that your posts so far make you sound really quite deranged to most people.

To fix your CVT transmission issues, you will almost certainly only need a new belt and a set of new rollers for the variatior too. This work is an hours job at the most for the competent home enthusiast.

You will need a safe and secure way of undoing the nut holding on the front pulley, while you undo the centre nut.

[Sweaty_Doughnut]

[Polarbear]

I doubt any of us have a particularly high regard for dealerships but at the same time when you have bought a new vehicle you are a complete mong if you let the warranty invalidate due to trying to save a few pennies.

I'm sorry if that seems harsh but a warranty is there for your benefit.

As far as what's wrong, my knowledge of variomatics is solely what I have read on the internet so I won't be giving you any advice. Oh and your statement - I prefer to take it to the mechanic only when there is no chance I can fix it myself

I think you just hit that brick wall.
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Triumph Trophy Launch Edition

[G]

Again; if you could answer the points in here, we might be able to help:

[Bloggsy]

all my bikes and cars are bought new and are dealer serviced until the warranty expires the bikes are always serviced by me and is then serviced by a marque specialist for the particular make of car. You say you don't trust the mechanics is a silly thing to say, but your stupidity is now gonna cost.

[sickpup]

[Polarbear]

[Sweaty_Doughnut]

[stevo as b4]

7000 miles of possibly stop start use is bloody excellent for a belt to last IMO.

My mind is slightly warped from bad memories of one of my own twist and go's. I had a Peugeot speedfight tuned to just about 12bhp, and I snapped a new belt after 2000km! As well as locking up the back wheel for a while it made a hell of a mess of everything inside the transmission case.
To be fair though there was not one part of that scooter that I didn't mess with/modify/improve or more likely fuck up.

But belts are cheap, and easy to replace, so I'd do them a bit sooner than the schedule especially if your doing lots of stop start riding.etc.

[Sweaty_Doughnut]

[stevo as b4]

The Jerky power delivery and the steps your feeling like different gears are probably more due to flat spotted rollers than the belt, so change both while your in there makes sense.

The parts are not expensive, and once you've got the centre nut off to change the belt, the front pulley will slide off the crank easily enough, to allow you to remove the retaining plate and get the rollers out.

I bet they are pretty worn after 7k as though twist and go CVT transmissions can be really great for stop start use it does put alot of strain on little plastic weighted rollers, as it's constantly moving in/out to keep the engine near peak power rpm until the gearing is maxxed out.

You should easily do the job in a hour or so, don't forget to tighten up the centre nut properly, and blow out any rubber/dust from.the old belt that the cases will probably be full of by now. Its probably worth checking for wear on the clutch shoes visually through the clutch bell, as eventually probably after a few belt changes the clutch shoes will need replacing also.I

[hmmmnz]

as stevo has said,
rollers,
get familiar with how the cvt works, its so simple.
rollers and belts dont last forever,

roller sets and belts are super cheap,

you'll also need a rattle gun to undo the variator
or some way of stopping it moving,

pretty much all scooters are the same in the way they work. get a manual to any scooter if you cant find one specific to you
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