Tyre size Vs speedo reading?

[Katman]

I thought the speed sensor ran off the front wheel on the Hyosungs.

[FJRider]

Ok, so a change of sprockets would help raise the actual speed toward the higher displayed speed, what else would that change? More/less top end low end?

What else would change ... you mean apart from "actual increase" reading on the dial at the same revs ??? ...

Gearing up on a 250 means LESS of both ...

[Katman]

Ok, so a change of sprockets would help raise the actual speed toward the higher displayed speed, what else would that change? More/less top end low end?

If the sensor is on the front wheel, changing your sprocket gearing or rear tyre profile will only alter the revs the engine is doing at a certain speed. It won't alter what the speedo is reading at all.

[SPP]

If the sensor is on the front wheel, changing your sprocket gearing or rear tyre profile will only alter the revs the engine is doing at a certain speed. It won't alter what the speedo is reading at all.

I think the speedo sensor IS on the front wheel! Get sick of being right all of the time? Ah well, healer or live with it

[Damage88]

I'm such a noob shows how much I know about bikes. Healer is definitely looking promising, just hae to save a few pingas