What is going on?

[The View Askew]

Whenever I ride my Lead 100 4t scooter, after about 10mins riding, something odd happens, while going along at say 30mph, when I twist to speed up, I end up with the exact same reaction from the scoot as if I applied the brakes and kept the throttle open.

WTF?
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"Do what you always did, get what you always got"

[The View Askew]

It does have a hole in the exhaust, this is before the can.
But being a 4t I fail to see how that could cause my problem, or am I missing something.
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"Do what you always did, get what you always got"

[sickpup]

Fix the exhaust then ask.

[SoND]

Do you mean that it will give a half assed attempt at revving up to pull away but it just doesn't?

Doubt the hole in the exhaust will make any difference.

Has the scooter always been like this?

It's probably worth checking the rollers and springs in the clutch/variator thing.
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Go back to bed - You have no rights - "Streetfighters ~ Mainstream motorcycling's crackwhore sister."

[The View Askew]

It is roughly now 8 minutes into riding it starts to do this, the revs will die away, it will sit at 30mph, if i twist all the way, nothing, no change in rev speed, just feels like it's engine braking, or the back brake keeps being applied.
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"Do what you always did, get what you always got"

[meooo]

Had experience of this on a 50cc recently.
The rollers in the variator stick and act as a brake against the engine, another fault is the air filter gets blocked/comes adrift/fills with water (especially after washing with a hose!!....dont ask)causing too much air to enter.
OR.... the large return spring @ the clutch (wheel) end of the transmission gets sticy on the drive spline and has the same effect as the rollers.
In short, check the rollers m8.

[The View Askew]

[meooo]

need a good set of allen keys and strong knuckles

[SoND]

[Yoshi]

You've probably got evil goblins living in the engine which are causing the trouble. Don't worry it's not that bad, all you have to do is dance and sing a song for them to come out because they are creatures of music and are attracted by singing.

They will come out through the exhaust pipe in an orderly fashion, as they are a very well ordered people.

Once they are out you need a friend poised with a net to capture them, but don't do anything nasty because they are a protected species! You need to return them gently to the wild.
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Present: GS650 Katana - Getting ready for summer touring!
Past: TS50, RS50, ZXR400, LT80, TS250

[The View Askew]

[ride_to_die]

This probably won't be very useful to you but I had a similar problem with a 50cc Gilera dna a couple of years ago. It just needed jetting as it'd been laid up for a few months. Hope your bike gets sorted.

Good luck,

Sam.

[ride_to_die]

This probably won't be very useful to you but I had a similar problem with a 50cc Gilera dna a couple of years ago. It just needed jetting as it'd been laid up for a few months. Hope your bike gets sorted.

Good luck,

Sam.

[jok]

[Robby]

However, before all that twatting around with the variator case, you could do as sickpup said and fix the exhaust, what with it being a known problem.
4 strokes rely on the exhaust to run right too. One big symptom of a hole in the exhaust can be fuck all happening when you open the throttle, like a big hole in the midrange.