Update 11/05/19 - Blyton Park Trackday
On Saturday I attended a Javelin Trackday at Blyton Park, it was a good day with everyone well behaved and reasonable weather, slightly overcast with only a small spell of rain in the afternoon, around 3o'clock.
After my previous trackday at Bedford Autodrome, I had an issue with the brake pedal going soft after a couple of laps, so last month I took the car to Rogue Motorsport to have the oil changed and the brake fluid replaced. Rogue bleed the brake system (inc the master cylinder) and supplied Millers Racing Brake Fluid 300 Plus.
I didn't experience any issues with a soft pedal at Blyton, however it's possible that might be because Blyton is alot shorter than Bedford so the brakes aren't getting worked as much. For research purposes I ordered a set of Racetech Motorsport temperature stickers (https://www.ebay.co.uk/itm/Racetech-Motorsport-Temperature-Test-Strip-Sticker-121-280c-Pack-of-10/231396436152?hash=item35e04d68b8:g:K98AAOSwPhdVDZ~m) to apply to the brake calipers. The max temperature registered on the front calipers was 143°c, the rear's didn't even reach the minimum temperature of 121°c. I'm going to also look at getting an infrared thermometer (I'm fairly sure I already have one somewhere), which I can then use the measure the disc temperature.
With quite a few trackday's coming up in the next couple of months I'm considering swapping the front pads out and re-fitting the Ferrodo DS2500's. Whilst I really like the MX72 pads on the road as they have better inital bite and feel compared to the Ferrodo's, I think they lack the aggressiveness of a more track biased pad. I'm also going to order a set of track tyres to go on my 949 Racing wheels, I'm considering the available options but it looks like the most likely tyre will be the new generation of Yokohama AD08RS.
Here are the photo's from the day: