SIDC - Saturday 30th September 2017 - Knockhill

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mckeann
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Location: Bo'ness

Re: SIDC - Saturday 30th September 2017 - Knockhill

Post by mckeann » Mon Oct 02, 2017 3:16 pm

alicrozier wrote:I had a couple of braking issues too.

1. Usual rear circuit lockout problem on the bumps braking for Duffus.
The brake balance is very good in the wet but can be a little bit too rear biased in the dry (mix of RC6 on the front RC8 rear intended to move the bias back but works a little too well!).
When this happens the rear brake circuit is disabled, pedal goes hard and usually triggers the ABS on the front...and you sail on through the corner.

2. ABS light came on during the last 2 sessions.
Hence no ABS and the 211 is quite hard to modulate on the brakes (or even tell a wheel is locked). It reset OK between sessions and was OK on the way home.

Issue 1 resulted in a 'bail out and drive around the outside of the corner' at Duffus. Issue 2 illicited a similar result at McIntyres on the last session (but leaving some tyre smoke and 11's pointing at the gravel). The issues can feel somewhat similar but #2 requires you to back off the brakes with a bit more urgency...

Btw not timing of course but I've been geeking out over the data logs.

There didn't seem to be a full clear lap and I only logged for early 15 lap session without pax.

Best complete lap: 57.57
Virtual best from the 5 splits: 54.72
Vmax: 112.47 on Railway straight (111.16 on Pit straight)
Best min speed at Duffus: 74.44mph (0.88g right, 0.9g left)
Peak g: 1.24 @ Hairpin, 1.12 @ Clarks

Over 1g in all the braking zones apart from Clarks...not sure why, maybe it's the limited time and downchange.

Where are your 5 split points Ali???

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alicrozier
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Location: Aberdeen

Re: SIDC - Saturday 30th September 2017 - Knockhill

Post by alicrozier » Mon Oct 02, 2017 3:29 pm

JohnStewart wrote: I think AndyG was doing 57s laps when he did SLS last year, but he may have been down on power a bit with a poorly engine.
I'm sure Andy will use that feeble excuse... ;)

He no doubt made back that and more with lack of mechanical sympathy. :lol:


Ape,
Splits are the default from Harry's Laptimer:
Start/Finish
Midway through Duffus (looks to be approx turn in point of the left)
Pre Chicane (start of the left kerb)
Apex Clarks
Apex Hairpin
Start/Finish

edited to add times:
8.4
11.5
9.3
15.2
10.4
All characters appearing in this post are fictitious. Any resemblance to real persons, living or dead, is purely coincidental.
Any references to laptimes, speed or driving on the public highway are purely for dramatic effect.

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Ferg
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Re: SIDC - Saturday 30th September 2017 - Knockhill

Post by Ferg » Thu Oct 05, 2017 10:31 am

Impressive stuff Ali. :thumbsup

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