Why are RPMs shown rather than torque?

[imdying]

and when you put an aftermarket exhaust system on it?

That's only a very minor change to the torque curve, and isn't going to change the shape of it very much.... 50%TPS @ 3000rpm is still going to be around (say) the 60% of maximum torque output mark. It would be far from useless in the situation you describe. Well, no more useless than the entire concept is anyway.

Besides which, the OEM don't care about how you screw up your bike with aftermarket rubbish... their gauge read fine when it left the factory. Of course, it wouldn't be any more useless than any bike with a gearbox driven speedo and a sprocket change.

[onearmedbandit]

The other option of course is to just get an in-line 4cly 1000cc sportsbike. I know how much torque it makes at any point in the rev range. Lots.

[bogan]

That's only a very minor change to the torque curve, and isn't going to change the shape of it very much.... 50%TPS @ 3000rpm is still going to be around (say) the 60% of maximum torque output mark. It would be far from useless in the situation you describe. Well, no more useless than the entire concept is anyway.

Besides which, the OEM don't care about how you screw up your bike with aftermarket rubbish... their gauge read fine when it left the factory. Of course, it wouldn't be any more useless than any bike with a gearbox driven speedo and a sprocket change.

actually depending on the system it can make a huge difference to where the power comes on. Not sure if % readout would be the way to go, as sombody said, having a bike that gets the needles furthuest around is a coveted title! The OEM maybe doesn't care, but the consumer might.

[imdying]

actually depending on the system it can make a huge difference to where the power comes on.

For example?

The consumers won't care... most of them don't even care their speedo is out, and that one actually has (financial) consequences.

[imdying]

The other option of course is to just get an in-line 4cly 1000cc sportsbike. I know how much torque it makes at any point in the rev range. Lots.

Works for me... every gear is a good one

[White trash]

The other option of course is to just get an in-line 4cly 1000cc sportsbike. I know how much torque it makes at any point in the rev range. Lots.

You're damn right. And 2010 R1s make more power than you'd expect at any one particular point in the rev range......

[bogan]

For example?

search for some stock vs full exhaust system dyno charts, the point of an exhaust system is to gain power, a lot of the time you get a choice whether to gain mid range or top end, ie, shifting the torque curve around. Different header and tailpipe lengths tune the gas flows for different rpm ranges.

[onearmedbandit]

search for some stock vs full exhaust system dyno charts, the point of an exhaust system is to gain power, a lot of the time you get a choice whether to gain mid range or top end, ie, shifting the torque curve around. Different header and tailpipe lengths tune the gas flows for different rpm ranges.

Not many people do full system changes though, unless you're racing. Most common choice is just an end-can on road bikes, and that makes 5/8 of fuck all on most modern (with some exceptions) performance bikes, other than weight loss and a fruitier note.

[imdying]

search for some stock vs full exhaust system dyno charts

I have seen plenty; the gains are negligible, and not enough to noticeably reduce the effectiveness of such a gauge.

Do you think being wrong by a couple of % would make a difference in any case?


As an aside, do you see such a gauge being marketed towards the sort of bikes that are given full race systems.

[onearmedbandit]

You're damn right. And 2010 R1s make more power than you'd expect at any one particular point in the rev range......

Yeeeah...for an R1.

[White trash]

Yeeeah...for an R1.

Enough to spin up nicely and highside my sorry arse

[onearmedbandit]

Enough to spin up nicely and highside my sorry arse

You're having me on right. There is a story to tell here Jimmy, and I feel like you're not sharing with us.

[bogan]

I have seen plenty; the gains are negligible, and not enough to noticeably reduce the effectiveness of such a gauge.

Do you think being wrong by a couple of % would make a difference in any case?


As an aside, do you see such a gauge being marketed towards the sort of bikes that are given full race systems.

yeh, personally I'd expect a higher degree of accuracy from such a guage as any rider should be able to feel when the peak torque is anyway. I don't really see a market for it at all tbh, race or otherwise.

[imdying]

yeh, personally I'd expect a higher degree of accuracy from such a guage as any rider should be able to feel when the peak torque is anyway

Really? You'd study it that hard? Surely all it would be good for is an indicator that you're in the meat of the torque curve? Hell all I'd want is a light that comes on when I've dropped out of the 70% of max torque zone.

I don't really see a market for it at all tbh, race or otherwise.

Me either, but if there was, that's the easiest most reliable way to go about it.

[White trash]

Really? You'd study it that hard? Surely all it would be good for is an indicator that you're in the meat of the torque curve? Hell all I'd want is a light that comes on when I've dropped out of the 70% of max torque zone.

Me either, but if there was, that's the easiest most reliable way to go about it.

Tell ya a bit about pointless guages. New R1 has a little indicator that tells you how far it's opening the throttle. Its very freaking cool but I kinda don't see the point in it except to see if you can get it to deliver maximum throttle of course. And if you're doing that you've got a death wish if you're staring at the little bar lights.