Jerks when accelerating

[Rhys]

Lift the back wheel of the ground and spin the wheel look at the chain and see if there is a "tight spot". It won't go around the sprocked as well as the rest of the chain

[Katman]

I think i'll still replace the cush drive first chance i get and try what you said too.

Read post #16 first.

[mrToby]

Lift the back wheel of the ground and spin the wheel look at the chain and see if there is a "tight spot". It won't go around the sprocked as well as the rest of the chain

Done.Its just fine.But thanks for the idea

[local]

When were the chain & sprockets last changed?

If you've already checked and/or adjusted the chain tension, next step is to get into the cush drive rubbers and pack them out with some inner tube or something (cheap option), or replace them. From there a new chain (and sprockets) will probably reduce a little of the slack, especially if the chain is of unknown vintage.

Given the bike's vintage, some slack in the gearbox is unavoidable. Only remedy for that is to re-tune your wrist to roll on the throttle more gently, or just never let off the gas?

[FJRider]

My friends bike doesnt jerk but his bike is very different to mine.fuel injected,vtwin 2011 model bike.Its a bad comparison.

Buy one like HIS then ...

It's all in the RPM YOU are using ... keep the rev's up and give it heaps. Don't just pour on the gas and expect GO ... drop it down a cog and go ...

You're welcome ...

[mrToby]

When were the chain & sprockets last changed?

If you've already checked and/or adjusted the chain tension, next step is to get into the cush drive rubbers and pack them out with some inner tube or something (cheap option), or replace them. From there a new chain (and sprockets) will probably reduce a little of the slack, especially if the chain is of unknown vintage.

Given the bike's vintage, some slack in the gearbox is unavoidable. Only remedy for that is to re-tune your wrist to roll on the throttle more gently, or just never let off the gas?

The previous owner says they were changed recently but who knows really.They seemed in good enough condition when i bought the bike so i wasnt too worried.Yea aparently i have to get use to a little gearbox slack lol
I'll get into the cush drive an have a look first chance i get .

[mrToby]

Buy one like HIS then ...

It's all in the RPM YOU are using ... keep the rev's up and give it heaps. Don't just pour on the gas and expect GO ... drop it down a cog and go ...

You're welcome ...

To be honest i didnt have the cash to buy just any bike i wanted and i've been doin my best to learn how to reduce whats happening be it different gears,rev range etc.

I'll get it in the end

Thanks

[mossy1200]

Are we talking a sudden harsh jerk or a surging power delivery?

My bike jerks when you add a heap of throttle. Feels like your arms might pull out and often the front wheel comes up off the ground.

[mrToby]

Are we talking a sudden harsh jerk or a surging power delivery?

My bike jerks when you add a heap of throttle. Feels like your arms might pull out and often the front wheel comes up off the ground.

It is sudden but i wouldnt call it harse at all.At worst its annoying.
Was more worried it might cause damage over time or be the beginning of something bad.

I'd have to be trying to get my front wheel up

[mossy1200]

It is sudden but i wouldnt call it harse at all.At worst its annoying.
Was more worried it might cause damage over time or be the beginning of something bad.

I'd have to be trying to get my front wheel up

I wonder if you have a carby issue. Slide sticking, bellows split or blocked primary jet.

Does it jerk when you throttle off also?

[mrToby]

I wonder if you have a carby issue. Slide sticking, bellows split or blocked primary jet.

Does it jerk when you throttle off also?

No i dont think so.

[mossy1200]

No i dont think so.

You would expect a chain or sprocket or final drive bearing to be harsh when coming off the throttle suddenly also.
Easiest thing to do is find someone that has been riding a while to have a ride.

[Akzle]

Easiest thing to do is find someone that has been riding a while to have a ride.

where in dorkland, newguy?

[mrToby]

where in dorkland, newguy?

Lol.Im located in west auckland.Te Atatu sth to be exact.

[haydes55]

Lol.Im located in west auckland.Te Atatu sth to be exact.

Come to rosebank road speedway for a look today (practice day, if the track isn't too wet) free entry and loads of bike mechanics around to have a look in exchange for a beer (cans only, no bottles).