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[Webby the Bear]

Ok, I now feel able to explain the gearbox issue (sorry been more concerned about me cam belt)

Anyways I was with the apprentice picking a car up and I drove in my car. He asked me to floor it so I did. It felt like it dropped one cog and was disappointing. I did it again and it did that satisfying girding of the loins and flew!

Now. Both times were around 40mph. So why would the car react different each time?

Obviously this is on an aside to the 0-60 dash. But perhaps is a clue in to a potential gearbox issue?

Around 40? 35?

The box won't drop a peg if it thinks it will need to change up again almost immediately, as it will actually be slower.

Change points on full kickdown on 3.0/3.2 are 45mph, 85mph and a shade under 130mph.  I'd suggest anything within 7 or 8mph of that will not cause a change down.

yeah around that TB.....so its dependent on speed. that makes total sense. as said I was around that speed. 

[Webby the Bear]

so let me just get this right......so was cruising AROUND 40. I then floor it. and cos it knows it will change up soon it wont drop a cog, but will just accelerate.

I then slow down to around 30-33ish and it drops a cog.

this is normal, right?

[TheBoy]

so let me just get this right......so was cruising AROUND 40. I then floor it. and cos it knows it will change up soon it wont drop a cog, but will just accelerate.

I then slow down to around 30-33ish and it drops a cog.

this is normal, right?

Not sure of speeds on a 2.5 (lower geared than 3.0), but yes, that is the idea.

[Webby the Bear]

Thanks for that tb. That makes total sense and at least i can discount this as a problem 

[Rods2]

Measuring 0-60 with a ballistic pendulum: http://www.wired.com/2015/11/ballistic-pendulums-are-as-awesome-as-they-sound/?mbid=social_twitter What could possibly go wrong?

[Field Marshal Dr. Opti]

So.......do we have a definitive figure, Mr Bear?

[Webby the Bear]

We need to obtain an OOF accelerometer.

And I need 4 new tyres 

[05omegav6]

We need to obtain an OOF accelerometer.

And I need 4 new tyres 

Did TB better your time then...

[Nick W]

We need to obtain an OOF accelerometer.

I've still got one.

[Webby the Bear]

We need to obtain an OOF accelerometer.

I've still got one.

How much you want for it Nick? If you're selling that is 

[Webby the Bear]

We need to obtain an OOF accelerometer.

And I need 4 new tyres 

Did TB better your time then...

Lol no I Told him he needed to sort hi headlights out so he did that while I stripped the car down 

[tidla]

Carnt be arsed to go all this thread but..

3.0 changes up from first at 55mph?

[TheBoy]

We need to obtain an OOF accelerometer.

And I need 4 new tyres 

Did TB better your time then...

Gixer led me astray the night before, so no quick driving and high revving engines for me yesterday 

[Webby the Bear]

We need to obtain an OOF accelerometer.

And I need 4 new tyres 

Did TB better your time then...

Gixer led me astray the night before, so no quick driving and high revving engines for me yesterday 

We both looked and felt like sh*t yesterday 

[Webby the Bear]

Ok so getting back on track (no pun  ) there are no real options to test performance in the winter. The next Santa pod rwyb day is in January and obviously still depends on the weather.

This should give me plenty of time to get an accelerometer.

One wonders if an accelerometer differs from an app you can get on the phone. But either way, as opti says, I'll need to get this to time it PROPERLY instead of messing around with watching videos and trying to time them 

In the mean time a,so I may take the opportunity to get the transmission fluid analysed. This can hopefully point out if there's any wear in the tranny that may affect performance. But mainly cos I'm interested in seeing what such a report is capable of finding