[DeTomaso] brake upgrade question

[GW]

http://www.rc-tech.net/cars2/panttransam/1905/bb.jpg




Will Kooiman wrote:
> I'd like to add...
>
> A dual master cylinder and a balance bar do not go together.  You either
> have a dual master or you have a balancer bar with 2 single masters.
>
> I have a Wilwood pedal assembly with Wilwood masters.  The setup that Quella
> sells uses the stock Pantera pedals.  It mounts to the power booster, and
> then has 2 small masters.
>
> The stock pantera pedal assembly has a bell crank that positions the clutch
> master towards the center of the car.  The clutch pedal is towards the
> outside.
>
> The Wilwood pedal assembly positions the clutch master towards the outside,
> inline with the clutch pedal.  The negative to this approach is it puts the
> clutch master too close to the sheet metal.  I used a BFH to dent the sheet
> metal for clearance, but it wasn't quite enough.  I have my car apart right
> now.  When I put it back together, I'm going to try a smaller clutch master.
>
> And finally, the Wilwood pedal assembly has the balance bar under the dash.
> It is a pain to adjust.  You're on your back and it's difficult to see.  The
> Quella/CNC balance bar is under the hood.  It's simple to adjust.  No, I'm
> not going to swap out my pedals for the Quella/CNC setup.  Mine works just
> fine.
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of GW
> Sent: Saturday, April 24, 2010 10:20 AM
> To: boyd casey
> Cc: De Tomaso List
> Subject: Re: [DeTomaso] brake upgrade question
>
> One more thing, a proportioning valve limits fluid to a brake where this 
> adjust and balances pressure. A balance bar system is not only ideally 
> much better then a proportioning valve but this is especially true if 
> you don't have a booster.
>
> This system is something anyone who can change spark plugs would love.
>
> Gary
>
>
> I have the dual MC balance bar on my car. Like amny things on my car 
> when I got it, it was installed but not adjusted. It was locking up the 
> front brakes way too soon and would slowly skid to a stop. It was bad. I 
> had no question I would rear end some one because I couldn't get the car 
> to stop for nothing.
>
> We all know the fronts have to lock up first but if they lock up too 
> soon the backs won't help the fronts as all and the tires may as well be 
> card board boxes.
>
> Balance in braking is everything. The balance bar was EASY to adjust. 
> Loosen up locking bolts, move threaded rod, tighten locking bolts.
>
> It took me a half hour of playing to get the brakes adjusted. Move the 
> bar, take it out lock the brakes, go back and adjust some more. Everyone 
> knows you want the fronts to lock first but in order to find the 
> threshold you have to take it too far. I adjusted it to where the backs 
> just started to lock up, then adjusted it back across the threshold 
> where it was front bias.
>
> After that I the fronts still locked up first but the car would plaster 
> you in your seatbelt. Awesome and easy set up to use.
>
> Gary
>
>
>
> boyd casey wrote:
>   
>> I am upgrading my brakes using Brembo "Big Red" calipers from a 996
>>     
> Porsche
>   
>> turbo ( a 911) with 13.1" rotors. I am going to replace my master cylinder
>> with a dual reservoir model and I wanted to ask about peoples experience
>> with balance bars or proportioning valves.  A balance bar seems like it is
>> allot more complicated and I was wondering what other people have done and
>> if they have used a proportioning valve instead of a balance bar and what
>> recomendations people might have.
>> Boyd
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