Board logo

Anglesey International Circuit - British Sprint Championship
jeffw - 8/10/19 at 08:20 AM

I qualified 9th on Sunday and was about to do the top 12 runoffs when the clutch failed. Sad end to a tough season but the car was running really well up to then.

This is the best run from the Timed runs and I won the class.

https://youtu.be/ZQi1X4sYyJA I think I stopped breathing half way round !

HowardB - 8/10/19 at 01:02 PM

That looked good and very quick... congratulations Jeff

jeffw - 8/10/19 at 01:08 PM

Thanks Howard, had my big boy pants on the run up to the left hander at rocket.

HowardB - 8/10/19 at 02:06 PM

quote:
Originally posted by jeffw
Thanks Howard, had my big boy pants on the run up to the left hander at rocket.



looked like 150+ that thing is like a rocket - possibly faster

What will it be like on max boost?

jeffw - 8/10/19 at 02:32 PM

It is running 490BHP on super unleaded currently, the max speed on the data was 156MPH although I think my eyes where shut at the time. With Adaptive Knock Control on the ECU it should make 530 on super, 570 or so on 102 and over 600 on 120 Octane. Plan is to stick with super unless I need the extra 102 Octane power for runoffs.

The driver/chassis needs improving before more power is really required. I did a 82 sec run in the video and the top guys ended up on 76/77 secs, most of which was gained in the first few corners off the start where I'm still not on it. The middle and last sectors I was there or thereabouts.

HowardB - 8/10/19 at 02:48 PM

156 on a short tight course sounds fast enough,. keep up the good work, looking forward to seeing more progress!

Riskyshift - 9/10/19 at 10:14 AM

Wow, looks and is very quick indeed! Nice job
ian

jeffw - 9/10/19 at 02:25 PM

Thanks

jeffw - 9/10/19 at 02:31 PM

gaz_gaz - 9/10/19 at 02:59 PM

great progress with a difficult project Jeff.
Shame to finish the year with a broken clutch but the cars certainly shifting now.
What's planned for the winter?

jeffw - 9/10/19 at 03:29 PM

Hi Gaz

Lots of things.

I've got the wheel sensors working correctly now so the ECU knows what each wheel is going. I can now add the GPS module & calibrations switches for Launch & Traction. I then need to have a test day to set up launch and traction .

Adaptive Knock control needs to be added to the ECU and we can then go back onto the rollers and should be able to get 520-530BHP on Shell Vmax and 550-570 on 102 Octane. Means I can switch between the two and know the engine is safe.

Gearbox (Hewland FTR-200) needs a lower CWP (3.44) and changing of 4/5/6 gears to drop the max speed in 1st from 75mph to 62mph which will help get the car off the line (one of the biggest issues)

New clutch required but not a replacement for what is there but rather a thicker twin plate non-sintered clutch, this will cope with the heat better and not fail every few months.

New triple element wing (think Jag XJR-14) by T89 Designs (Cal Trump, Dr Doctor on here) in ali which will be very interesting.

Rebuilt the shocks and errr...I think that might be it lol.

[Edited on 9/10/19 by jeffw]