Throttle "snappiness"?

[ooger]

This is an odd question, but I'm sure theres an answer for it.

When you snap the throttle open and close it immediately, the engine revs, or "blips" up to 7-8K revs (or more, depending how far you open the throttle)

It zooms up, and drops pretty much just as quickly - probably a little slower than it goes up


On another bike, doing the same thing - i.e quick wrist throw/revving - the engine seems to take an AGE to reach the peak of the revs, and drops down SOOO much slower.


Whats this called, and what is causing the difference?

How can that responsiveness be improved?

[Red Herring]

There can be all sorts of reasons for this, from the spec of the engine (lighter crank and pistons will have less enertia) right though to the throttle cables being rusty and not returning smoothly.

[sauluk]

Is it not just the throttle response? I've noticed that the SV is particularly good for this compared to other bikes I've ridden and I do like that.

I think it can be improved by better throttle bodies but could be completely wrong!

Also my car is fly by wire and I find it very different, would like to try out a daytona to see what it's like on a bike... Wait is a daytona FBW or did I make that up?

[ooger]

Would it make sense if i'm comparing a 650 with a smaller engine?

[Red Herring]

Not necessarily, but as i said it very much depends on the spec/design of the engine and the associated electronics/fuel system. A race engine for example frequently has the crank lightened and generators etc removed. This isn't just to save overall weight but it's so there is less mass being rotated by the engine which means the crank can speed up and slow down quicker putting less stress through the cases.

[fastdruid]

I've found that in general larger engines rev faster.

A VTR for example revs faster than an SV.

Druid