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[Nick W]

ok, well i still plan to do the test in the next summer.

you know, perhaps the climate/humidity may make a difference.

however i think the meat and potatoes of the test is replicating the set up of the car (e.g. tyres, well maintained etc), replicating the test weight of the car, getting it timed correctly with an accelerometer, doing it on a dry and level track with zero wind and finally perfecting my driving skills to get the most out of the car.

i'm really looking forward to the results. should be a fun day out too.

You wouldn't manage all that in a day if you had the entire track to yourself. And all you're going to achieve is a baseline for your car. But you're right, it has the potential to be fun. In a boring sort of way as you're doing it with a very slow car.


I still have the accelerometer if you're interested.

[Webby the Bear]

ok, well i still plan to do the test in the next summer.

you know, perhaps the climate/humidity may make a difference.

however i think the meat and potatoes of the test is replicating the set up of the car (e.g. tyres, well maintained etc), replicating the test weight of the car, getting it timed correctly with an accelerometer, doing it on a dry and level track with zero wind and finally perfecting my driving skills to get the most out of the car.

i'm really looking forward to the results. should be a fun day out too.

You wouldn't manage all that in a day if you had the entire track to yourself. And all you're going to achieve is a baseline for your car. But you're right, it has the potential to be fun. In a boring sort of way as you're doing it with a very slow car.


I still have the accelerometer if you're interested.

Yep I've had a good think and I'd like to buy it nick  is the new year ok to pay for it due to funds and Xmas etc?? U know I'm a bit thick, even more so with computer stuff. Is it a turn on and go sorta thing or much messing about with computers and such?

Lol yeah your right. It's never going to set the world on fire for speed. But as I've mentioned before it's really about testing theories in the real world and hopefully get some good results.

As stemo mentioned.....all this is probably pointless if they just made the figures up anyway 

Tb, why do you say the labels are 'dangle berries'? I feel a tale of sideways action coming on  I got to say that I was very surprised they had such a good rating for being so cheap. So you may be right in that they just make it up 

[TheBoy]

Tb, why do you say the labels are 'dangle berries'? I feel a tale of sideways action coming on  I got to say that I was very surprised they had such a good rating for being so cheap. So you may be right in that they just make it up 

Its tested almost with the release compound still in place, and under conditions that appear to be completely irrelevant to actual usage.

I can tell you from a £700 mistake on the (wet grip) A rated SC5 that they are absolute, utter, borderline dangerous shite. Far worse than the C rated Heinz 57 budgets that came off (and we know that budgets invariably have poor wet performance).

The A rated GY F1 A2 also mediocre for wet and dry grip.

The well known, lethal, deadly Autogrip FS10x range actually start out well as a reasonable budget tyre, but once about a third worn (so about 5-6mm left) always turn into something that will kill you if it detects rain within 1000 miles.


Its not really possible to label tyres, as chrisgixer found when he tried doing a survey on here, as a tyre's characteristics often do change over its life, and people's expectations vary from "MOT passing, black and round" to "something that actually works"

[Sir Tigger KC]

you know, perhaps the climate/humidity may make a difference.

One thing I don't think you've considered Webby is altitude.  As we know the higher the altitude the thinner the air gets and those who have driven a car/truck at high altitudes will know that the performance is affected. So I think you need to find out what the altitude is at the original test site and conduct your test at the same or near altitude. 

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

[Broomies Mate]

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

How would I obtain an obsession?   

[05omegav6]

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

How would I obtain an obsession?   

45 pages of inspiration here

[Webby the Bear]

Tb, why do you say the labels are 'dangle berries'? I feel a tale of sideways action coming on  I got to say that I was very surprised they had such a good rating for being so cheap. So you may be right in that they just make it up 

Its tested almost with the release compound still in place, and under conditions that appear to be completely irrelevant to actual usage.

I can tell you from a £700 mistake on the (wet grip) A rated SC5 that they are absolute, utter, borderline dangerous shite. Far worse than the C rated Heinz 57 budgets that came off (and we know that budgets invariably have poor wet performance).

The A rated GY F1 A2 also mediocre for wet and dry grip.

The well known, lethal, deadly Autogrip FS10x range actually start out well as a reasonable budget tyre, but once about a third worn (so about 5-6mm left) always turn into something that will kill you if it detects rain within 1000 miles.


Its not really possible to label tyres, as chrisgixer found when he tried doing a survey on here, as a tyre's characteristics often do change over its life, and people's expectations vary from "MOT passing, black and round" to "something that actually works"

Really good point about them changing over the life time 

[Webby the Bear]

you know, perhaps the climate/humidity may make a difference.

One thing I don't think you've considered Webby is altitude.  As we know the higher the altitude the thinner the air gets and those who have driven a car/truck at high altitudes will know that the performance is affected. So I think you need to find out what the altitude is at the original test site and conduct your test at the same or near altitude. 

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

Already ahead of you tig 

Original test site is 89m above sea level. Santa pod is only around 50ft above. So yes there is a difference. I've struggled to find out how much this will affect it tho

[Broomies Mate]

you know, perhaps the climate/humidity may make a difference.

One thing I don't think you've considered Webby is altitude.  As we know the higher the altitude the thinner the air gets and those who have driven a car/truck at high altitudes will know that the performance is affected. So I think you need to find out what the altitude is at the original test site and conduct your test at the same or near altitude. 

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

Already ahead of you tig 

Original test site is 89m above sea level. Santa pod is only around 50ft above. So yes there is a difference. I've struggled to find out how much this will affect it tho

Probably about the same difference as you only having 6 sausages on your fried breakfast instead of the usual 8! 

[Webby the Bear]

One thing out of interest. . . . Will an incorrect gel set up affect acceleration? Mine is bang on as I last had mine done by wim and nothing seems to have changed when I put it on the 4 wheel aligned at work.

Obviously incorrect toe would create I presume a large amount of resistance but I was thinking more the camber and castor. Any thoughts

[Webby the Bear]

you know, perhaps the climate/humidity may make a difference.

One thing I don't think you've considered Webby is altitude.  As we know the higher the altitude the thinner the air gets and those who have driven a car/truck at high altitudes will know that the performance is affected. So I think you need to find out what the altitude is at the original test site and conduct your test at the same or near altitude. 

But I think you need to be careful Webby as I heard of obsessions like this leading to divorce! 

Already ahead of you tig 

Original test site is 89m above sea level. Santa pod is only around 50ft above. So yes there is a difference. I've struggled to find out how much this will affect it tho

Probably about the same difference as you only having 6 sausages on your fried breakfast instead of the usual 8! 

  I'll be weighing myself the morning of the test! 

[Webby the Bear]

May struggle to find Michelin ps3's for the testing according to our tyre supplier. Anyone know a place that sells them.

Michelin, of their current stock, recommend the 'primacy' for my car. Are these similar tyres to the ps3's?

U may say this is pointless but I'm doing it nonetheless 

They open a RWYB in January. I hope the weather is clear for that day. By then I should have my accelerometer (thanks nickW), ill have some nice michelins (I have always wanted a decent set to try out anyway) I'll have the exact test weight according to Vauxhall and it will be on a grippy/level track.

If I am to make predictions I don't think my car will do the time with the extra weight in the car that Vauxhall say they add to the test (remember they say they add 200kg to the kerb weight to do their test). I have had time to ponder this extra weight and I think it's 'dangle berries'. However it will be interesting to see my times WITH the weight and I plan to do some runs with all extra weight ditched! I may even get my slender buddy to do the test for me. I reckon it will do the time with spare removed, ballast removed etc. but we'll see.

 

[Webby the Bear]

And can we also have a discussion on how many RPMs to chuck on when holding the brake in the auto?

[Webby the Bear]

And can we also have a discussion on how many RPMs to chuck on when holding the brake in the auto?

I'm presuming the stall speed of 2500rpm? But can I get away with any more and will it actually help?

[Broomies Mate]

And can we also have a discussion on how many RPMs to chuck on when holding the brake in the auto?

I'm presuming the stall speed of 2500rpm? But can I get away with any more and will it actually help?

Presumably, the more the merrier provided it doesn't cause you to break traction.  So, with a 2.5, about 6,000RPM should be just fine.