Shane:
Boosters are needed for disk brakes. You will not find
disk brakes without boosters on any volume production car I am aware of.
With drum brakes, the rotation of the drum "pulls" the shoe
into firmer contact and so is "self boosting" in a sense.
There is no comparable mechanical effect for disks, so
to get any sort of decent pedal effort, you must have a boosted
system. Going to a higher leverage pedal box will reduce the
effort to a more reasonable level, but you will probably find that
the pedal travel is a good deal longer than you like.
I suppose a racer might like this sort of setup. Less weight,
easier to modulate, less to go wrong, etc. But I am willing to bet a
donut (make mine raised chocolate frosted, please) that you won't like
it for the street. Just my SWAG.
As for the power bulge, at one point it was needed to clear
some part of the engine, but it was retained as a styling cue after
the engine was changed and clearance was no longer needed. Don't
remember what part of the engine needed the clearance though...
Cheers,
Vance
------------------------------
1974 Mimosa Yellow Triumph TR6
Cogito Ergo Zoom
(I think, therefore I go fast)
-----Original Message-----
From: Shane Ingate [mailto:hottr6@hotmail.com]
Sent: Thursday, February 13, 2003 10:26 AM
To: 6 Pack
Subject: TR6 pedal ratio, and TR250 "power bulge"
All,
Does anyone know what the (brake/clutch) pedal ratio is on the TR6? Please
correct we if I am wrong, but I figure that one of the reasons why we have a
brake booster is because of a poor pedal ratio.
I'm going to junk the pedal box and use one from Tilton or Wilwood, which
have a ratio of 5.7:1. This will enable me to ditch the brake booster, and
have the front and rear brakes on independent circuits (I will use a balance
bar and proportioning valve). Could it also reduce the clutch effort? I've
already beefed up the sheet metal around where the pedal box goes, ready to
accept the after-market pedals.
On another note, if you would like to check out the early pictures of what
Rags' hood will look like with a TR250 "power bulge", check out
http://triumph.hottr6.com/Body.html.
Why do they call it a "power bulge"? Is this some phallic reference to men
wearing 60s/70s tight pants? Groovy, Baby!
Shane Ingate in Maryland
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