[Fot] dual circuit brakes on a tr4

[Tony Drews]

Due to my roll bar arrangement, a tilton pedal assembly woudn't work, 
so we fabricated a knock off of the revington kit shown here:
http://www.revingtontr.com/shop/mainframe.asp?http://www.revingtontr.com/shop/product_display.asp?a=2&mscssid=X0XP0W21QF6M9LLGCRJN3HAGCXN46V5D&SiteLanguage=eng&CarType=TR4&PageType=default&ProductID=RTR4080LAK
(part number RTR4080LAK)

The sheetmetal is basically the same arrangement as stock, but 
wider.  There's a linkage to connect the stock brake pedal to the 
dual cylinders that works suprisingly well.  You put a spacer on the 
bolt for the clutch cylinder to cover the new offset, and that works 
suprisingly well too.

I have a different rear brake setup, so can't help with the bore size 
question, but since the stock system sent the same pressure to all 
wheels, I'd think the same size cylinders all around are appropriate.

I used girling remote reservoir cylinders that I sourced from DRE, 
the formula vee folks.  With several sets of balance bars with the 
center hole drilled in varying places, you can adjust the bias 
without having the cockpit adjustable deal that doesn't look very 
vintage.  You need pretty short cylinders, so the normal Tilton 
master cylinders don't fit.  I seem to remember them coming up with 
some shorty ones recently, though.

I can send some pics of the arrangement if desired.

We mocked it up and had a local fabricator actually made it.  Looks 
like it belongs there.

- Tony

At 03:07 PM 11/1/2007, you wrote:
>Hi All,
>
>I am working on setting up my tr4 to race next year on the west coast,
>and I was wondering if anyone else has done a dual circuit conversion
>on a tr4? I see that revington tr has a bolt on one, but it is really
>pricey.  Any suggestions would be appreciated.
>
>Thanks in advance,
>Mark
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