7th August Hethel

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jeffw
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Name: Jeff Wiltshire

7th August Hethel

Postby jeffw » Sun Aug 07, 2016 10:00 pm

Spent today at the Lotus test track at Hethel. Lovely weather, great track but I had a few issues.

Practise one resulted in a pretty quick spin as the car was too stiff on the back and I braked 10m later than normal.

www.youtube.com/watch?v=O05A36fvo_o

Then had issues with the front splitter which I had to take off....and in all the activity I forgot to check the fuel level which resulted in the car almost running out on the 2nd lap.

https://youtu.be/BCT5Vrgoxk4

This is the first time ever that I've been allowed to film at Hethel so pretty rare footage...Still won the class but should have been well into the 120s

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adithorp
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Re: 7th August Hethel

Postby adithorp » Mon Aug 08, 2016 7:56 am

Might be just the video effect but that spin looked to go very early.

jeffw
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Re: 7th August Hethel

Postby jeffw » Mon Aug 08, 2016 8:59 am

Car was too stiff on the back and I'd braked too late. Trying to turn in while trailing too much brake pressure.

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adithorp
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Re: 7th August Hethel

Postby adithorp » Mon Aug 08, 2016 2:42 pm

Watching it again it looks like the back is coming around before you turn it (if the cameras are synced). Only viewing on my phone though.

jeffw
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Re: 7th August Hethel

Postby jeffw » Mon Aug 08, 2016 5:41 pm

I don't think so....

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pigeondave
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Name: David Malenczak
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Re: 7th August Hethel

Postby pigeondave » Tue Aug 09, 2016 2:11 pm

I'm intrigued.

How do you read these things?

Do you do a full breakdown of your runs?

Can you compare info from the other drivers?

Are the brake and accelerator bars accurate? its just that it looks like youre on the brakes (hard) and the car goes sideways. Have you got the steering angle sensor? because you're only just off centre when it comes round.

I'd like to know how to interpret the data as i got the DL1 but its not plumbed in. Another winter job..... from two winters ago.

be interested to learn about it before i plug my one in.

jeffw
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Joined: Wed Jul 01, 2009 12:31 pm
Name: Jeff Wiltshire

Re: 7th August Hethel

Postby jeffw » Tue Aug 09, 2016 2:15 pm

There is a analysis program from Race Technology which shows all the logged channels. The G bars are accurate.

jeffw
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Joined: Wed Jul 01, 2009 12:31 pm
Name: Jeff Wiltshire

Re: 7th August Hethel

Postby jeffw » Tue Aug 09, 2016 2:33 pm

Looking at the data again it appears the back end locked, probable because I down shifted one too many times to 2nd gear...at 70mph.

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adithorp
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Re: 7th August Hethel

Postby adithorp » Tue Aug 09, 2016 3:02 pm

Is that shift set-up or just need more practice? Would a bit less rear brake bias help?

jeffw
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Name: Jeff Wiltshire

Re: 7th August Hethel

Postby jeffw » Tue Aug 09, 2016 3:15 pm

I changed down at 70 into 2nd....rear bias isn't going to help when that happens. Need to look at the set-up of the GCU and restrict downchange timings a bit more


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