Is this OK to buy like this?
Senior Member
Joined: Jul 2012
Posts: 8,999
From: C-Town
2009 HUMMER H3 Alpha $20,995 Mileage 121,000
Btw, the seat back nets are missing, sells for good money on eBay.
Last edited by hummerz; Mar 30, 2022 at 08:28 PM.
Super Moderator
Joined: Jul 2007
Posts: 13,090
From: Boat Town USA MI
Yeah, they are supposed to come with rocker panel protection too (a/k/a Rock Rails), but the one in interest has Nurse bars instead....... Most people who bought one from a dealer did not even know what they were, just another H3, but with a V8.
Senior Member
Joined: Jun 2015
Posts: 795
From: SoCal
While friction is a general physical expression, vehicle traction can be defined as the friction between a drive wheel and the road surface. “traction is the friction between a drive wheel and the road surface. If you lose traction, you lose road grip.” Now you know that it all comes down to friction.
Static friction – the frictional force between surfaces that are NOT moving relative to each other.
Kinetic friction – the frictional force between surfaces that ARE moving relative to each other.
But when the wheels are rolling isn’t it about kinetic friction? No. When driving on a dry road, irrespective of vehicle speed, it’s the static friction that keeps the vehicle steady on course. If you look at it in a microscope – and in very slow-motion – the contact area of the tire doesn’t move relative to the road surface. It’s just that continuously new parts of the tire gets in contact with the road as the wheel is rolling.
It’s all about friction
First, let’s dive into the physics of friction and add some rubber and asphalt. Friction as such doesn’t move the vehicle forward. Friction is a resisting force that resists the relative motion of two surfaces. Simply put, when driving, the engine generates a force on the driving wheels that moves the vehicle onward. Friction is the force that opposes the tire rubber from sliding on the road surface. However, things are not really that simple – we have two different frictions to consider; static and kinetic friction.Static friction – the frictional force between surfaces that are NOT moving relative to each other.
Kinetic friction – the frictional force between surfaces that ARE moving relative to each other.
But when the wheels are rolling isn’t it about kinetic friction? No. When driving on a dry road, irrespective of vehicle speed, it’s the static friction that keeps the vehicle steady on course. If you look at it in a microscope – and in very slow-motion – the contact area of the tire doesn’t move relative to the road surface. It’s just that continuously new parts of the tire gets in contact with the road as the wheel is rolling.
Now should we also ra-hash our discussion about the H3 TPMS?!?!
J/K!Your last point is also interesting. I've always been amazed that as the tire rotates, the surface goes from a dead stop (on the pavement) to twice the speed of the vehicle (at the top of the tire), and then again to a dead stop, every single rotation!
Now THAT is some acceleration/deceleration!
Last edited by 650Hawk; Mar 31, 2022 at 06:27 PM.
Junior Member
Joined: Jul 2021
Posts: 9
i have the seat back netting.... i don't use them since my kids seem to catch them with their feet and pop them off..... plus i'm one of those semi-ocd people that like as little in my vehicle as possible. so if anyone is interested in them i would sell them. just give me a shout on PM.
Senior Member
Joined: Jul 2012
Posts: 8,999
From: C-Town
i have the seat back netting.... i don't use them since my kids seem to catch them with their feet and pop them off..... plus i'm one of those semi-ocd people that like as little in my vehicle as possible. so if anyone is interested in them i would sell them. just give me a shout on PM.
Super Moderator
Joined: Jul 2007
Posts: 13,090
From: Boat Town USA MI
i have the seat back netting.... i don't use them since my kids seem to catch them with their feet and pop them off..... plus i'm one of those semi-ocd people that like as little in my vehicle as possible. so if anyone is interested in them i would sell them. just give me a shout on PM.