R32 Gtst - Track Car

[MBS206]

Any idea why the shifter stopped working randomly, but would start working and then stop again on the next lap?

[Komdotkom]

It's not the dreaded rusty actuator syndrome I hope. I've often wondered if for short events like WTAC whether there is a benefit to running a tank for the shifter instead of a compressor to get around this issue.

[bcozican]

12 hours ago, MBS206 said:

Any idea why the shifter stopped working randomly, but would start working and then stop again on the next lap?

 

2 hours ago, Komdotkom said:

It's not the dreaded rusty actuator syndrome I hope. I've often wondered if for short events like WTAC whether there is a benefit to running a tank for the shifter instead of a compressor to get around this issue.

insert technical terms here......    the motec didnt know what gear the box was in, selector sensor plus barrell not engaging after the above 2nd run it just went to sh*% and basically didnt work thats all I know

box is out and going to Jason at Samsonas

[Komdotkom]

Oh righto, Brad is always banging on about the gear pos sensor and how critical it is.

Better than rusty actuator like a holinger

[GTSBoy]

24 minutes ago, Komdotkom said:

Oh righto, Brad is always banging on about the gear pos sensor and how critical it is.

If this was an industrial application (and more so, an equipment/health safety thing) then I'd be mooting a 2 out of 3 voting system. You have 3x sensors, expect and want all 3 of them to agree, but in the event of disagreement of one of them, you use the agreed value of the other 2. And raise a fault.

This then places the common failure mode on whatever linkage you have connecting the 3 sensors to the thing that moves, but some common sense can be applied to make that similarly redundant, space being available, of course.

[MBS206]

OR, Tell the Motec to STFU, you said shift, so try shifting!

But then yes, I agree, more sensors needed to.
Put either a wheel speed sensor, or a diff speed sensor on it.

Then get an input shaft speed sensor too. (I say input shaft speed, and not engine RPM). This way, you can now also log and see if the clutch is slipping (RPM, vs input shaft speed), and you can calculate gear (Input shaft speed / Output shaft speed). At least then if the gear position sensor fails you have a backup.

And realistically, the Motec should only worry about what gear you're in for the parts where I'm assuming you have some power management strategies in it for the lower gears. (IE, lower boost, maybe different throttle curves, different ignition curves, etc etc).

But it should stop it shifting. Pull the flappy, that f**ker should just attempt the motion! Heck, even on a sequential like on a motorbike, you can keep trying to kick it up a gear all you want, the physically part of the box takes care of not being able to loop the whole way around the box! Only part you'd have to worry is how it gets to reverse.  But that's on the driver... An R32 shouldn't be so smart as to try and override the driver on a gear shift  

[bcozican]

 This thing sounds like a friggin jet fighter 😆 must be that Neo head @Dose Pipe Sutututu lol

 

Using all the track great shot coming out of the last turn onto the straight 

 

 

 

Edited July 4 by bcozican

[Dose Pipe Sutututu]

Hell yeah, NEO head ftw!

Also you and Brad probably bought all the spare NEO heads lying around and drove the price of them right into the stratosphere lol.

[bcozican]

10 hours ago, Dose Pipe Sutututu said:

Hell yeah, NEO head ftw!

Also you and Brad probably bought all the spare NEO heads lying around and drove the price of them right into the stratosphere lol.

I do know where there is a fair few 😉

[MBS206]

3 hours ago, bcozican said:

I do know where there is a fair few 😉

Your back garage, second shelf from the bottom?

[Komdotkom]

I've got three stashed away but it's starting to get silly with the prices 

[Komdotkom]

Good luck on the weekend mate

[Dose Pipe Sutututu]

All that matters is you're safe and you were able to type that post.

Hopefully heaps of parts you can recover for the next shell.

 

[MBS206]

1 hour ago, Dose Pipe Sutututu said:

All that matters is you're safe and you were able to type that post.

Hopefully heaps of parts you can recover for the next shell.

 

I feel there must have been a FB/insta post and the weekend did not start well at all

I hope everyone is all okay

[No Crust Racing]

Yeah dunno why johhny posted that here with no context, just post on FB/insta bro where he put it up? 

Laine had an off at T4 during Thurs prac, he's ok, car is less than perfect, they are done for the weekend, he can fill in the rest.

Bando also binned it like 100m up the road. 
 

[Dose Pipe Sutututu]

https://www.facebook.com/share/p/18rmVb1SKB/ 

[Duncan]

Hope you aren't too sore after that one, might take a day or 2 to notice yet and I guess it is a loooooong drive home.

On the bright side, tube frame front end is a thing at superlap, right?

[bcozican]

Yeop... binned it

 

This will be a summary will not many pics atm and cbf 

• Fixed the samsonas - it was totally munched
• Put a new precision 7675 T4 on with proper split pulse mani
• Got to Sydney to get to car - drove to canberra to get racecar - drive back to sydney that night
• Next day all day at Plasmaman putting on new clamps cleaning some things up and adding another large engine oil cooler sitting at the rear above diffuser to keep things cooler
• Next day - Tuesday - on Dyno - killer wikid awesome pumped out really good numbers - more mid range and on lower boost levels
• Wednesday - first prac - all day again getting the suspension right - had to borrow front suspension again - out do a lap come in - out do a lap - in - what i had just couldnt handle the load at the more consistent higher speeds - got a lap in at the end of the day that was pretty reasonable 

Put it this way that lap wouldve had me in 4th in Pro am for the whole event - with only 700 hp and used tyres

• Thurs first official prac day - lap out warm up - then entered a hotlap with above setting and 80% effort took corners 1,2,3 and into 4 car felt awesome -  rear came around out of nowhere bang into the wall near front on at whatever 140 kmph

Done, over, gone

Just one of those how did that happen apparently as all indications show nothing out of the ordinary

Got to spend the rest of the time at the event like I hadnt done before - was actually Ok mainly as I had my family and my boy is 9 and got treated like a rockstar

Long trip home, lost a trailer wheel in nowhere land, X5 airbag suspension gave up half way across nullabour and rode on bumps stops (its now completely fine) had to do a 19 hr drive day on day 3 as accommodation got screwed up so just had to keep driving till found a town with some

Now to reassess - hopefully the motor and other things are OK but yet to be seen too. There is no easy fix there is no i'll just order that part and get it sent - we'll have a talk to people see what can happen and what the go is but at minimum its rebuild from scratch struts forward and alot of time effort and $ should and if I return and if but maybe/ when 

I have the cage tied into the front strut towers - if I didnt have that things couldnt been worse

you can say its just a front end but if you know what goes into these cars... you'll know what that actually means in reality

 

Car was very fast. Disappointing we just didnt get to show it

Effort doesnt win you races though

 

 

Apparently this is motorsport !

 

Edited 5 hours ago by bcozican

[MBS206]

Biggest thing is you're okay!
 

It sounds like between the accident, and the drive home, it was a pretty torturous trip again! On the bright side, you took the opportunity to enjoy the event more from the perspective of a spectator, than as an entrant!

 

Sad to see so much damage to the car. It really has taken a HUGE hit in the front end. If/when you choose to repair, hopefully the rails are straight (At least from shock tower backwards). Hopefully the extra cage coming through there has save most of the chassis rails, and HOPEFULLY saved the motor too.

Best of luck when you eventually get motivated to start pulling it down to check it all out