[Healeys] BJ8 caliper conversion

[Guy R Day]

Providing you can lock the wheels (without putting your back out!) when you 
press the brake pedal it doesn't matter whose or what type of brakes you 
have (unless you need additional cooling for race purposes or driving down 
ski slopes).  You have sufficient.  What matters is the grip between the 
tyres and the road surface (the co-efficient of friction) and it is this 
interface where your braking distances alter.  Given the same weight 
transfer any distance reduction  has nothing whatsoever to do with the brake 
type.

Guy R Day

----- Original Message ----- 
From: "Oudesluys" <coudesluijs at chello.nl>
To: "Freese, Ken" <Kendall.Freese at Aerojet.com>
Cc: "Healey forum" <healeys at autox.team.net>
Sent: Saturday, November 28, 2009 8:08 PM
Subject: Re: [Healeys] BJ8 caliper conversion


> It is not the swept area that matters for brake force, but the total 
> piston area. This should be about the same or larger in the modified 
> situation. If not the rear may brake away to soon because of rear wheel 
> lock up before the front wheels will block.
> Kees Oudesluijs
> NL
>
> Freese, Ken schreef:
>> Something else that might interest some is converting to Toyota 4 piston
>> calipers. Those are less than $40 each and the swept area is greater. I 
>> don't
>> know the exact speed that the converter tested at, but the distance was
>> reduced by 20 feet.
>> http://www.vtr.org/maintain/brake-conversion.shtml
>>
>> Ken Freese