01-09-2017, 04:18 PM
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#1
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,803
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Just took a good look at your picture of the car on jack stands
Are you actually supporting the car by the rotor hubs ??
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
Last edited by JayG; 01-09-2017 at 06:00 PM.
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01-10-2017, 03:21 AM
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#2
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Registered User
Join Date: Nov 2008
Location: Florida
Posts: 1,111
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Quote:
Originally Posted by JayG
Just took a good look at your picture of the car on jack stands
Are you actually supporting the car by the rotor hubs ??
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Is that bad? Isn't the car supported by the rotor hubs when the wheels are on?
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01-10-2017, 07:43 AM
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#3
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,803
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Quote:
Originally Posted by heliguy
Is that bad? Isn't the car supported by the rotor hubs when the wheels are on?
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well, yes it is connected throughout the wheel and tire. So structurally not a issue other than the load is distributed over the entire rotor/hum, not just 1 spot. I don't know if that is problematic or not.
My concern would be the stability of a jack stand on a round larger diameter surface that is slightly angled as well.
Why not put them at the actual jacking points??
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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01-10-2017, 08:00 AM
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#4
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Registered User
Join Date: Nov 2008
Location: Florida
Posts: 1,111
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Quote:
Originally Posted by JayG
well, yes it is connected throughout the wheel and tire. So structurally not a issue other than the load is distributed over the entire rotor/hum, not just 1 spot. I don't know if that is problematic or not.
My concern would be the stability of a jack stand on a round larger diameter surface that is slightly angled as well.
Why not put them at the actual jacking points??
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The jack was occupying the actual jacking points when I was placing the stands.
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01-10-2017, 08:21 AM
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#5
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Very impressive results! I like the look.
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03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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01-10-2017, 08:27 AM
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#7
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01101
Join Date: Jul 2015
Location: CT
Posts: 587
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Quote:
Originally Posted by JayG
Just took a good look at your picture of the car on jack stands
Are you actually supporting the car by the rotor hubs ??
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This was the first thing I noticed, since I put my car on stands the other day. The hubs are tapered, so there isn't much flat surface for them to sit on.
Plus, without the wheel bolts on, the rotor is not actually part of the car. The caliper is holding it in, but why take the chance.
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01-10-2017, 08:37 AM
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#8
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,803
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Quote:
Originally Posted by alm001
This was the first thing I noticed, since I put my car on stands the other day. The hubs are tapered, so there isn't much flat surface for them to sit on.
Plus, without the wheel bolts on, the rotor is not actually part of the car. The caliper is holding it in, but why take the chance.
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that's a good point on the lug bolts.
The rotor is held in place by a small screw (assuming it is even there), not the caliper and it is supported by the hub, bit IMHO not secure enough for me. I suppose you could tighten in the lug bolts, but still......
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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2004 Porsche Boxster S
2004 Porsche 996 Targa
boxster S
