Diarmud, et al,
Braking efficiency results from a combination of factors
For a constant applied brake pressure, piston area, over pad area, times
radius of effective pad centre on disc This gives brake torque in
newton/metres.
These results should then be normalised to account for varying minimum wheel
sizes applicable to the brake combination. Bigger wheel diameters result in
less effective braking effort for a constant applied force. Open to flames,
and healthy discussion,
Cheers
Feral Errol
mailto:[EMAIL PROTECTED]
http://www.datrats.com.au/
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Diarmuid Tyson
Sent: Sunday, December 10, 2000 21:12
To: [EMAIL PROTECTED]
Subject: Piston vs Pad area
It's been a long time since I've tried to get my head around these kind of
physics, and while the piston area is obvously important in calculations,
surely the pad area is a major factor too. Anyone tried different
pads/calipers with similar piston area? (Trev? 240K vs VT Comm? Pad area
would have to be almost double!)
Might have to get my Uni Dynamics texts out...
D.
At 12:28 PM 10/12/00 +1030, you wrote:
>While we're on the subject -
>
>Mazda RX7 series 4 - 3.25 33.16
>
>PL
>
>
>Continuing on from there Zac...
>Z32 - 3.75 44.18
>Wilwood - 4.45 62.21! Now there is a 4 pot guaranted to peal the ears of
>your head upon deceleration!
>
>
>
>and for the record:
>Nissan R33 4s - 3.5 38.49
>
>
>
>
>> Nick,
>>
>> I recon cheapest and easiest convesion would be to use twin piston
>> simitomo's from early 240K's. Consider the following caliper info.
>>
>> Each Piston diameter (cm) Total piston area (cm2) (ie
>> pi x r^2 x number of
>> pistons)
>> Simitomos 4.8 36.19
>> Hilux 3 28.27
>> 200B 5.4 22.9
>>
>> So if you apply the same amount of hydraulic pressure to the caliper then
>> the twin piston simitomos work better.
>>
>> Regards
>> Trev
>>
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