[Vwdiesel] What exactly holds the A2 front wheel hub in place? Just the b...

[mark shepherd]

Does this take into account the oodles of lb force applied to the bolt when 
clamping?

Mark
----- Original Message ----- 
From: "Patrick Dolan" <pmdolan at sasktel.net>
To: "Bryan Belman" <dieselwesty at yahoo.com>
Cc: <vwdiesel at vwfans.com>
Sent: Tuesday, September 01, 2009 11:14 PM
Subject: Re: [Vwdiesel] What exactly holds the A2 front wheel hub in place? 
Just the b...



Bryan:

First of all, you DO have the snap rings on either side of the wheel 
bearing, right?

The three little bolts on the bottom control arm that hold the ball joint 
need to handle about 1.25 time the cornering and braking loads fed into that 
wheel.  If you consider the extreme, you could have 100% of the front end 
load on the outside wheel at a cornering acceleration of maybe 0.8g, and a 
loaded car weight of maybe 1500 lbs. on that end, or 1,200 lbs.  The little 
7mm bolts EACH have more shear strength than that, and I am too lazy to 
calculate the clamping force to show that by friction alone, they will do 
the job.  You are now fully appreciating what light weight vehicles are all 
about:  if the car isn't some kind of bloat pig (i.e., like an A4), you 
don't need spare locomotive bits to hold the suspension together.

----- Original Message -----
From: Bryan Belman <dieselwesty at yahoo.com>
Date: Tuesday, September 1, 2009 10:27 am
Subject: Re: [Vwdiesel] What exactly holds the A2 front wheel hub in place? 
Just the b...

> I guess that is enough, I am not knocking the design as it does
> work. Maybe I am not German enough to see how it all works
> together or my Irish side is getting in the way here.
>
> I am looking forward to my new driving experiance once I put my
> new/slightly used brake pads in and crank that axle nut on to 190
> ft. lbs. tomorrow night.
> thanks all.
>
> Bryan Belman, Pt. Pleasant, NJ
> 04 Jetta Wagon TDI PD, 100hp, 5sp -- running :)
> 92 Jetta 1.6 Eco-Turbo Diesel -- running :)
> 82 Diesel Westy 1.9NA -- Not running :(
> 70 Type 1 stock Beetle -- Not running :(
>
>
>
>
> ________________________________
> From: "LBaird119 at aol.com" <LBaird119 at aol.com>
> To: vwdiesel at vwfans.com
> Sent: Tuesday, September 1, 2009 11:39:29 AM
> Subject: Re: [Vwdiesel] What exactly holds the A2 front wheel hub
> in place? Just the b...
>
> In a message dated 9/1/2009 7:19:01 AM Pacific Daylight Time,
> dieselwesty at yahoo.com writes:
>
> >
> > So, the only thing I see holding the front wheel to the car is
> these 3
> > small bolts that hold the lower ball joint in place. They
> torque to only 18
> > ft-lbs to the triangular plate that sits on top of the control arm.
> >
> > That just does not seem like enough for the forces that are put
> on the
> > front wheels?????????????
> >
>
> Well, that IS a clamp of sorts. The ball joint piece is
> sandwiched
> between the two stamped halves of the lower control arm so
> friction
> gets kinda "multiplied" there.
> If you don't like 3 bolts holding stuff, there's only three that
> hold
> the control arm on, there's only ONE that holds the steering
> knuckle to the ball joint. :-)
> The strut's fastened pretty firmly to the steering knuckle as I
> recall.Your pivots are the inner control arm bushings, ball joint
> and the
> top of the strut.
> Don't forget the tie rod end is there too! :-D
> Loren
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