The Roadster NA Journey Begins

[Hoolio]

To be honest I have a feeling that it is more an issue between the Haltech and the sensor than an unreliable OEM sensor. However the question is why is it just impacting my build, it is not as if this is the first time it has been done. The Haltech tech agreed with everything that has been done to date in eliminating potential issues, it has him stumped as well.

Anyway after getting home today started working on the suggested solution. Also noticed the dump pip I hit on the track put a nice ding in the splitter front edge! It would also appear that the splitter worked really well as I now have to make a much better front air dam between the splitter and the GV lip...

Getting off topic in my own thread...

Possible solution (as suggested by Haltech).

1. Get some revenge on a CAS sensor (after driving 12 hours this felt good)
DSCN2949 by Eipeip, on Flickr

2. Ever wondered what was inside a CAS sensor?
DSCN2950 by Eipeip, on Flickr

DSCN2951 by Eipeip, on Flickr

3. A much smaller CAS, it will never be the same again...
DSCN2952 by Eipeip, on Flickr

3. Drill hole in now destroyed CAS sensor to accept the Haltech part no. HT010610 http://www.haltech.com/wp-content/uploads/2011/01/Haltech-Single-Channel-Hall-Effect-Sensor-HT010610.pdfDSCN2953 by Eipeip, on Flickr

Plan is to tap the CAS mount with a 12mm x 1 tap, however I did not have one at home, so tomorrow's job. Car will be off to plus for a post track service and inspection so I will get them to install the Hatlech hall effect sensor. This may work or it may not, it is a process of elimination. Interestingly the Haltech PS1000 defaults to using a pull up resistor on the trigger/home I wonder if this was disabled if the miss would still happen?

Will test it out at Morgan Park I guess.

Interestingly, I ran across this today, and remembered Mark's problems. Bit late for you Mark, but seems like there have been enough people having problems for someone to do something about it.

I am deeply suspicious that what looks like an OE sensor “modified to race quality specifications for improved durability & performance” is no more than an OE sensor with a DTM connector attached. There's nothing wrong with that as a concept, but the price is rather high!

[greenMachine]

Agreed. The sensor was not the problem though, it was the wiring on the connector plug, perhaps the plug itself (as I understand it). Replacing the factory connector would I think have addressed the issues experienced by Magpie unless the pins on the sensor were part of the problem.

[Hoolio]

Yep, agreed that it would most likely have fixed Magpie's problem. I'm really just having a dig at the vendor's vague but compelling description, coupled with the high price. 10 out of 10 for marketing

[Magpie]

Car has found its new tuning home, Phantom Performance.

The plot will cause some comments, but I hate to say it this is more believable... Now Phantom use a roller dyno where as GT Auto used a hub dyno.

What Luke (Phantom) did say was that he did not need to talk to me about data analysis. He was also happy that he got the rear tyres up to 70°c. He also mentioned it was like sitting in a racing game with all the info available. The car also had a Haltech wideband installed and the tune now makes use of this, on a fault with the sensor it will default back to base tables. All up Luke was more than happy with the car and his tune.

[Magpie]

For all the people who I have helped and or have read this ‘blog’ can you please offer words of encouragement for my team Racepak 2018 application...

It requires the use of social media to record and report on what members of team Racepak do.

Applications require a video as to why I race


For those that did not know, the cars life is also posted on Facebook.
https://www.facebook.com/mx5na6/

[Magpie]

Early Christmas present to me....

Have received some preliminary information on the next wing for the car... This was the reason for the above test

View this announcement by the designer of my wing...

[Okibi]

Please pass on my congratulations, watched a few of his vids, sounds like an awesome opportunity.

[Magpie]

Made Team Racepak for 2018, who said data does not give its own rewards Look forward to more posts

https://www.facebook.com/Racepakdatasystems/videos/1712387115491361/

[Gladiator]

Great reward for effort mate. Well done.


Sent from my iPhone using Tapatalk

[bruce]

Congratulations Magpie.

[SKYHI]

Well done Mark. Look forward to seeing much more data analysis in the future. Really hoping to get my SE back on track at some of the Time Attack events in QLD this year.

[Magpie]

First run for 2018, set a PB on the QR National, however gear selection issue cut short my afternoon session

In case a comment is made about the 86's overtaking 'event', the situation was caused by a car coming out of the pits and dropping straight onto the racing line. Dylan had no choice but to go on the outside as he was already committed to T1...


Had a nice spin at T6 as well, data shows that instead of 'driving' out of the spin I lifted off. If the car was in understeer lift off would have been the right thing to do, however lifting off when in oversteer just makes the spin more 'violent'... Another comment made was my approach into T6 was not straight, rather I was heading left (away from the turn) when I started to brake.

Lifted off some 26m later than 'normal' (PB lap)


Braked some 21m later than 'normal'. Interestingly a car following me was wondering when I was going to brake...


Had brake lock up so started to modulate the brakes. This washed a lot of speed off without flat spotting the tyres!


Modulating the brakes


Brake off, no throttle


Stalled
https://scontent-syd2-1.xx.fbcdn.net/v/ ... e=5B5C4977

Looking at the modulation of the brakes a little closer.


There is about 0.3 seconds between peak brake pressures. On the first press the car travelled 10.5 m and washed off 20kmh of speed.
It took 26.7m (0.817 seconds) to loose 40kmh (105 to 65)


Spin Video
https://www.facebook.com/mx5na6/videos/737801869940948/

[ManiacLachy]

So, what's the issue with the gear box? I keep seeing you've got issues but it's vague.

Congrats on the PB! I see a few more of those coming your way this year.

[Magpie]

So, what's the issue with the gear box? I keep seeing you've got issues but it's vague.

Vague because I'm unsure of the issue...

The 'hard' to change issue was there in December (last run) and would only happen towards the last session, however it would always go into gear... Hopefully it is just the slave/master that is the issue. There has also been an annoying very small oil leak, more than likely from the rear main seal. Since it is getting looked at I have asked them to remove the box (inspect), check the clutch (it has been in there 4 years) and do the rear main seal.

Hopefully there will be nothing wrong with the box, OEM parts for the 6 Speed are annoyingly expensive and hard to source.

Video
https://www.facebook.com/mx5na6/videos/737543536633448/

[ManiacLachy]

Got it. I wasn't even aware of the symptoms, other than "gearbox issues". Hopefully it's easily sorted. General consensus is, it's easier and cheaper to replace the 6-speed gearbox than fix it.