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[Webby the Bear]

Ps to get this right and as simple as possible:-

I'm looking for horse power at 6000rpm to be 167 minus drivetrain loss.

And I'm looking for torque at 3000rpm to be 168 minus drivetrain loss.

Correct? 😀

[Nick W]

Ps to get this right and as simple as possible:-

I'm looking for horse power at 6000rpm to be 167 minus drivetrain loss.

And I'm looking for torque at 3000rpm to be 168 minus drivetrain loss.

Correct? 😀

Correct.
But(you knew that was coming) a chassis dyno isn't particularly accurate, and so all of the figures have to be taken with a degree of scepticism.

[Webby the Bear]

Thanks nick. 

There's no other way. 0-60 was catastrophically flawed. And I'm not pulling the engine to put it on an engine dyno. So unless anyone has another way of measuring my motors power then it's all I can do 

[aaronjb]

Well it's an Omega, so if you wait long enough the chassis will rust clean off the engine and then you can stick it on an engine dyno

Just kidding.. you're right, there is no other way.  In fact there is no 'perfect' way, you can cheat engine dynos just as easily by dynoing it without any ancillaries connected, which was the trick before SAE bhp came in, IIRC. Amazing how much power an old style alternator, water pump and PAS pump would suck off the headline figure! Or fiddle the environmental corrections; every dyno run 'should' be corrected to standard atmospheric pressure, standard air temperature and humidity so that you can compare them against each other when taken on different days .. but if you just fudge those numbers a little bit..

Anyway, Northampton Motorsport have a decent reputation so I don't think they'll be doing anything underhand, you just have the vagaries of the dyno itself to content with (grip, rolling resistance, etc).  Fortunately if they can strap an ~800hp car down properly and get a decent run they shouldn't have much trouble with <200hp!

Half tempted to get a day off in Feb and pop along for a nose..

[YZ250]

There's no other way. 0-60 was catastrophically flawed..................

If the straps let go during the dyno you could end up with a record breaking 0-60mph. 

I'm not in to the figures malarkey myself. If, hypothetically, I floored it off the lights and the car next to me outruns me, and I can't catch him, then he has a faster car. No maths involved there, quite ingenious really isn't it.   

Not that you'd ever do such things Mr YZ, as you are now a reformed character and have seen the light that speed is supposed to be evil

Sadly the only print-out I get to record my cars performance is closely followed by a fine. 

[anV6]

Well it's an Omega, so if you wait long enough the chassis will rust clean off the engine and then you can stick it on an engine dyno

At least it is not a FWD bland see-one-have-seen-them-all VW (Audi, Skoda, yadda, yadda) or obnoxious BMW (which has it's own rust issues and problems. Just ask Bavarian cab drivers). PFL has personality. 





















Oh yes...just kidding.   

[TheBoy]

Nope, because they do different things... strong torque lower down the rev range is good for getting moving and keeping moving, the higher the engine revs, the more power it produces...

Look at a bike engine, 6-800 cc producing the equivalent of 750bhp per ton at 12,000 rpm, yet produce minimal torque.

Fixed.  .....but absolutely correct otherwise. 

I miss my (original) ZX-10, as the acceleration above 6000rpm was exciting.  And that's the old ZX-10, not the newer mental ones.

But I have resigned myself that I'll never ride again...  ...not that I've binned my gear yet

[TheBoy]

Sadly the only print-out I get to record my cars performance is closely followed by a fine. 

That's because you've used up all your naughty boy courses

[Migv6 le Frog Fan]

Nope, because they do different things... strong torque lower down the rev range is good for getting moving and keeping moving, the higher the engine revs, the more power it produces...

Look at a bike engine, 6-800 cc producing the equivalent of 750bhp per ton at 12,000 rpm, yet produce minimal torque.

Fixed.  .....but absolutely correct otherwise. 

I miss my (original) ZX-10, as the acceleration above 6000rpm was exciting.  And that's the old ZX-10, not the newer mental ones.

But I have resigned myself that I'll never ride again...  ...not that I've binned my gear yet

Same here. Given up bikes, although I'm sorely tempted during the summer months. My gear is still kept on its shelf in the shed though.
It was suggested recently that I at least put it away in the loft, but I just couldn't bring myself to do it.
I have plenty enough signs that I'm getting old, without voluntarily giving myself another one. 

[Webby the Bear]

Well it's an Omega, so if you wait long enough the chassis will rust clean off the engine and then you can stick it on an engine dyno

Just kidding.. you're right, there is no other way.  In fact there is no 'perfect' way, you can cheat engine dynos just as easily by dynoing it without any ancillaries connected, which was the trick before SAE bhp came in, IIRC. Amazing how much power an old style alternator, water pump and PAS pump would suck off the headline figure! Or fiddle the environmental corrections; every dyno run 'should' be corrected to standard atmospheric pressure, standard air temperature and humidity so that you can compare them against each other when taken on different days .. but if you just fudge those numbers a little bit..

Anyway, Northampton Motorsport have a decent reputation so I don't think they'll be doing anything underhand, you just have the vagaries of the dyno itself to content with (grip, rolling resistance, etc).  Fortunately if they can strap an ~800hp car down properly and get a decent run they shouldn't have much trouble with <200hp!

Half tempted to get a day off in Feb and pop along for a nose..

Thanks Aaron 👍

I'll have a word with the chap as mentioned earlier and say I don't want any tricks. Just an honest answer to one simple question. Is it down on power or not lol 👍

Ps mate would be great to see u if you were there. I don't think we've ever met at any oof do?