Mr Preuninger made me buy a pyrometer!!
07-08-2011, 04:12 PM
#76
Burning Brakes
Join Date: Mar 2006
Location: Montréal, Québec, Canada
Posts: 972
Likes: 0
Received 0 Likes
on
0 Posts
07-08-2011, 04:25 PM
#77
07-08-2011, 04:28 PM
#79
Admin
Lifetime Rennlist
Member
Lifetime Rennlist
Member
07-08-2011, 06:11 PM
#80
Race Director
Porsche ist ein deutsches Auto und es gibt keine offical russischen Rasse-Mannschaften, so ist die offical Sprache von Porsche, undurstand deutsch?
07-10-2011, 03:09 AM
#82
Racer
Thread Starter
Here we go. Donington tyre test results. Just realised that degees C might not be that helpful for all, but I forgot, sorry.
Day was dry mostly. 17 degs to start with then warming to 24 to finish. Donington is a clockwise circuit and the lasr bend before the pit lane right left chicane. Cool down lap after each 20 minute session, but sill stayed on the speed, jut not the brakes. Temps done first then presures, probe into rubber at 1.5" from either edge and the centre. Probe left in for 5 secs (which showed a drop of 2 degees on average.) Tyres bled back to 31/34 after each reading.
Anyone pick any bones outta this?
Day was dry mostly. 17 degs to start with then warming to 24 to finish. Donington is a clockwise circuit and the lasr bend before the pit lane right left chicane. Cool down lap after each 20 minute session, but sill stayed on the speed, jut not the brakes. Temps done first then presures, probe into rubber at 1.5" from either edge and the centre. Probe left in for 5 secs (which showed a drop of 2 degees on average.) Tyres bled back to 31/34 after each reading.
Anyone pick any bones outta this?
07-10-2011, 09:35 AM
#84
Race Director
Here we go. Donington tyre test results. Just realised that degees C might not be that helpful for all, but I forgot, sorry.
Day was dry mostly. 17 degs to start with then warming to 24 to finish. Donington is a clockwise circuit and the lasr bend before the pit lane right left chicane. Cool down lap after each 20 minute session, but sill stayed on the speed, jut not the brakes. Temps done first then presures, probe into rubber at 1.5" from either edge and the centre. Probe left in for 5 secs (which showed a drop of 2 degees on average.) Tyres bled back to 31/34 after each reading.
Anyone pick any bones outta this?
Day was dry mostly. 17 degs to start with then warming to 24 to finish. Donington is a clockwise circuit and the lasr bend before the pit lane right left chicane. Cool down lap after each 20 minute session, but sill stayed on the speed, jut not the brakes. Temps done first then presures, probe into rubber at 1.5" from either edge and the centre. Probe left in for 5 secs (which showed a drop of 2 degees on average.) Tyres bled back to 31/34 after each reading.
Anyone pick any bones outta this?
07-10-2011, 10:18 AM
#85
Racer
Thread Starter
07-10-2011, 10:32 AM
#86
Race Director
07-10-2011, 01:15 PM
#87
I'm not sure what advice or information you're requesting.
Some pyro's will take the temp sample automatically, otherwise, leaving the probe in the tire rubber too long will produce inconsistent results as the location cools as you noted (and generally take far too long to record all 12 measurements.)
Here's some links.
Pyrometer Usage Tips & Diagnostic Indications
http://www.longacreracing.com/articles/art.asp?ARTID=16
Probe vs. Infrared
http://www.longacreracing.com/articles/art.asp?ARTID=9
Temperature compensated Pressure
http://www.longacreracing.com/catalo...d=1520&catid=8
Nitrogen vs Air, Temperature compensation
http://www.longacreracing.com/articl...emperature.pdf
Some pyro's will take the temp sample automatically, otherwise, leaving the probe in the tire rubber too long will produce inconsistent results as the location cools as you noted (and generally take far too long to record all 12 measurements.)
Here's some links.
Pyrometer Usage Tips & Diagnostic Indications
http://www.longacreracing.com/articles/art.asp?ARTID=16
Probe vs. Infrared
http://www.longacreracing.com/articles/art.asp?ARTID=9
Temperature compensated Pressure
http://www.longacreracing.com/catalo...d=1520&catid=8
Nitrogen vs Air, Temperature compensation
http://www.longacreracing.com/articl...emperature.pdf
07-10-2011, 04:41 PM
#89
Racer
Thread Starter
08-21-2011, 06:00 PM
#90
Racer
Thread Starter
Update.
Took the car out for a spin yesterday and 5 minures into the drive got a warning from the TPMS....10psi down, then a few seconds later....20psi down. Pulled over immediately.
Got a lift back to the batcave and came back with a screwey, jack and rear RHS track wheel/tyre. This is what I removed:
Worst thing is I was due to go to the Porsche museum this coming friday, and I'm really pissed with myself for letting the tyres (the LHS is the same ware) get into this condition.
It could well have gone pop on the Autobahn at 200mph....with the Louise driving. Not good.
I'm going back to Factory settings 1.30' front and rear, factory toe. I do too many road miles to keep it in track mode. It just aint good for the inside edges.
I'm gonna keep sticky rubber on the BBS and change to a road rubber for the road wheels to cope with road and wet track duties.
Any suggestions?
Took the car out for a spin yesterday and 5 minures into the drive got a warning from the TPMS....10psi down, then a few seconds later....20psi down. Pulled over immediately.
Got a lift back to the batcave and came back with a screwey, jack and rear RHS track wheel/tyre. This is what I removed:
Worst thing is I was due to go to the Porsche museum this coming friday, and I'm really pissed with myself for letting the tyres (the LHS is the same ware) get into this condition.
It could well have gone pop on the Autobahn at 200mph....with the Louise driving. Not good.
I'm going back to Factory settings 1.30' front and rear, factory toe. I do too many road miles to keep it in track mode. It just aint good for the inside edges.
I'm gonna keep sticky rubber on the BBS and change to a road rubber for the road wheels to cope with road and wet track duties.
Any suggestions?