Castle Combe 18 October 2014

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Re: Castle Combe 18 October 2014

Post by CNHSS1 » Sun Oct 19, 2014 11:54 pm

im sure your right, James was far quicker through Camp than me, and I knew it, but still couldnt stop me shifting down :roll:


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Re: Castle Combe 18 October 2014

Post by nickkeyser » Mon Oct 20, 2014 12:51 pm

Nick wrote:Guys,

Results. Please advise if anything is wrong!

John Eldridge 102.43 10.15 Pts
Craig H 84.79 25 pt
James K 94.84 17.05
Nick K 96.8 15.15
James C 86.4 24.59
Mike T 96.26

So congrats to Craig for another full score. Clearly not a day for slicks. James Carters score is very impressive in a powerful car. Mike Thompson's time shows real experience and would be a good score

I still await Debden times James?.
Thanks Nick, I have just been trying to work out how fast I would need to go on the cars current setup to score 25points, but the version of the spreadsheet I have gives a very different result to the above. Ive put in 130hp, 730kg, and C tyres, and Craig as 360hp, 1060kg, and B tyres. Not really sure where I'm going wrong.


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Re: Castle Combe 18 October 2014

Post by nickkeyser » Mon Oct 20, 2014 1:05 pm

Lots of good photos here:
http://www.jackflashphotography.co.uk/p864346118

1st timed run, coming into Bobbies
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Re: Castle Combe 18 October 2014

Post by Corky » Mon Oct 20, 2014 2:18 pm

Great stuff. Looks like a good time was had by all. And by the sounds of it, you were relatively lucky with the weather.


Nick K, I've just run those figures on my copy of the spreadsheet. The result was that you'd have to do a 86.6 against Craig's 84.79. If you were on B's you'd have needed a 89.6. So you're giving away 3 secs with slicks.

The result for the times above isn't what I get. I have you at 19.13 points and Jim at 20.26. There must be an error on one of the spreadsheets.


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Re: Castle Combe 18 October 2014

Post by nickkeyser » Mon Oct 20, 2014 2:27 pm

Thanks - that's exactly what I wanted to know. They are the scores I got too Steve - if It looks like can score low 20s I'll stay on slicks and wets next year, but with results in the mid teens I'm going to need to beat Craig on scratch times and I don't think I'd manage that even if I could I'd the entire lap with the pedal pinned!


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Re: Castle Combe 18 October 2014

Post by Nick » Mon Oct 20, 2014 4:11 pm

Guys,

I agree the differences looked large to me so have checked spreadsheet.

As far as I can tell the results are correct. You have to remember the spreadsheet "adjusts"for track length, or more specifically the fastest man's corrected handicap time. I will look again

As discuss the spread sheet needs re-writing for next season


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Re: Castle Combe 18 October 2014

Post by Corky » Mon Oct 20, 2014 4:21 pm

Nick, I ran the results for Castlecombe, so assume that track length was already taken care of. It could be something as simple as a rogue value in a hidden cell that is making the difference.


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Re: Castle Combe 18 October 2014

Post by Nick » Mon Oct 20, 2014 4:24 pm

Have done a quick check by calculator and agree. Will revise all and update

I now make it

John E 16.16 pts
James K 20.27
Nick K 19.14
Craig 25
James C 24.75

Apologies, still not sure how this has happened.


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Re: Castle Combe 18 October 2014

Post by CNHSS1 » Mon Oct 20, 2014 4:43 pm

We changed the track length adjusting factor a coupl3 of years ago which probably means the older copies of the spreadsheet are out of date, but i was surprised at the scoring for Team Keyser given they now hold a National class record.

Nick K

i think comparing my times and yours isnt as clear cut as the times suggest. Garry Cox and i were trying to work out whether i first competed at castle combe in 2000 or 2001, and i think ive competed there ever since excepting my 4yr sabbatical.
Its also probably the fastest average speed lap length with a low ratio of corners too. Tower is a 90mph corner as is Camp, and those speeds are greater than the max straight speeds at many events. It should on paper favour powerful cars. Your car is underpowered for its grip level, mines over powered for its grip level. On a track with high average speed and low corner count relative to the lap length, the over powered/under gripped car is at less of a disadvantage and effectively has an advantage over the under powered/overgripped car.
The slicks are cheaper and very effective ( as saturday proved!!) but you have the extra slick handicap. This used to be 2.5% - 3% but we as a club chnaged this from the original TVR spreadsheet basis to 5% iirc as the only cars running on slicks were Big Bob and Batmobile and were the 2 most powerful cars competing at the time.


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Re: Castle Combe 18 October 2014

Post by Corky » Mon Oct 20, 2014 5:00 pm

Nick, I'd be happy to check the spreadsheet is functioning correctly if you wanted to email me a copy.

I wouldn't know if all the correction factors are right, but I would be able to check that the calcs and macros are working.


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Re: Castle Combe 18 October 2014

Post by efi_sprintgte » Mon Oct 20, 2014 8:35 pm

I may have to get an on board camera to tell me what I'm doing wrong..! I need to find 2seconds against a certain blue sabre! Craig I find a later, wider turn into camp corner works for me.. I'm nowhere near the inner rumble strip.. Saying that your lap time was awesome so what do I know! :D


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Re: Castle Combe 18 October 2014

Post by CNHSS1 » Mon Oct 20, 2014 8:46 pm

Your line and commitment at Camp was much better than mine mate, its the only corner on the whole calendar that frightens me!

Incar cameras really useful, we watched Nick Keysers footage on his ipad after 1st timed run and could see areas that him and Jim could improve (and bugger me they went quicker! )


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Re: Castle Combe 18 October 2014

Post by CNHSS1 » Mon Oct 20, 2014 9:08 pm

Anyone got the times from last year at Castle Combe?


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Re: Castle Combe 18 October 2014

Post by efi_sprintgte » Mon Oct 20, 2014 9:13 pm

Back in the day paddock antics were letting tyres down and pulling plug leads off, now it's going to be stealing lightning chargers and turning cameras off :D haha. Defo worth thinking about


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Re: Castle Combe 18 October 2014

Post by nickkeyser » Mon Oct 20, 2014 9:35 pm

Nick, thanks for the update. I'm chuffed with those results, and there's still plenty more in the the car.

James, I find incar footage great for sorting out my lines, it's so much clearer when you play it back than going through it in ya head, especially when you only have a couple of runs to make it count - and it's great for seeing where Jims gone faster / stealing his lines! I like to rewatch last years before too.
As Craig said, we got some cracking pointers from him and the times really tumbled.


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