The vented rotor will be much thicker Robert, and wouldn't fit into the
caliper.

On 2/19/06, Robert Fisher <refisher@mchsi.com> wrote:
>
> The question seems to be 'can you upgrade to "big brakes" using the stock
> later-model calipers and just purchasing the larger rotors/pads (as
> opposed
> to the whole 'kit')?' Karl was saying the piston is the same size, but
> does
> that mean the entire caliper is suitable? Kim says they 'mount further
> out'-
> how is this done?
>
> It follows that if you could indeed use the stock calipers, provided they
> were in good condition or at least good candidates for rebuilding, you
> could
> save a good bit of money over the 'kits' by just getting the rotors and
> pads
> (assuming you already had larger wheels)... Some clarification, please?
>
> Cya,
> Robert
>
> ----- Original Message -----
> From: "Kim Brennan" <kimbrennan@MAC.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, February 19, 2006 9:20 AM
> Subject: Re: SA big brakes: caliper rebuild kit?? UPDATE!
>
>
> > Because the rotors are a larger diameter, the calipers mount further
> > out as well. They will rub against the wheel if you use a 14" wheel.
> >
> > As to the benefit, it is easier to stop a spinning object if you grab
> > it further out. Yes, if you have a larger swept area, that too will
> > help, but by simply using a larger radius where you apply the
> > clamping power, it is easier.
> >
> >
> > On Feb 19, 2006, at 3:00 AM, Robert Smythe wrote:
> >
> >> Forgive my usual ignorance but I dont have both sets of parts,
> >> stock and SA
> >> caliper/discs staring me in the face.
> >>
> >> If it is the case that the pistons are the same, the pads/swept
> >> area is the
> >> same, is the only "bigness" to the SA brake system the vented
> >> rotor? There
> >> must be more to it, if the brake disc doesnt have a 0.5" larger
> >> radius, why
> >> does one need 15" wheels?
> >>
> >> Robert
> >> 90 MV
>

--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
www.crescentbeachguitar.com