E-brake? (Now known as balance bar adjuster)

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E-brake? (Now known as balance bar adjuster)

Postby PandaSal » Sat Sep 01, 2018 6:40 am

Hi I’m a new member to group and awaiting delivery of 550 (2nd owner). Not sure what this is but guessing it’s an e-brake assembly? Can anyone advise? Line runs from brake pedal to a knob towards passenger side?
Thanks,
Sal
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B2763318-6FF9-49A6-A9E6-421F0655F521.jpeg
Knob to passenger side
B2763318-6FF9-49A6-A9E6-421F0655F521.jpeg (7.78 KiB) Viewed 668 times
C88A60D0-5C15-4F32-8C67-74115572C21C.jpeg
Line from brake pedal
C88A60D0-5C15-4F32-8C67-74115572C21C.jpeg (10.78 KiB) Viewed 668 times
Last edited by PandaSal on Sat Sep 01, 2018 8:51 am, edited 1 time in total.
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Re: E-brake?

Postby egrant5329 » Sat Sep 01, 2018 8:02 am

http://cncbrakes.com/Product.aspx?grp=a ... subseries=
Balance Bar Adjuster
balance bar adjuster permits quick and positive front/rear brake ratio adjustment.

EdG
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Re: E-brake?

Postby PandaSal » Sat Sep 01, 2018 8:48 am

Thanks for info Ed! I read it’s useful for track cars but for daily recreational driving, what’s its best application? Seems like something that shouldn’t need regular adjusting to want to have such easy access to do so.
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E-brake? (Now known as balance bar adjuster)

Postby egrant5329 » Sat Sep 01, 2018 4:28 pm

Try braking really hard and if you like how the car stops, I would leave it alone. You shouldn’t need to mess with for daily driving. It’s the first one I have seen in a Spyder.

I noticed the logo “CNC”. Many of us have their hydraulic slave cylinders on our transaxles. I just found it surfing their website.
EdG
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Re: E-brake? (Now known as balance bar adjuster)

Postby PandaSal » Mon Sep 03, 2018 6:45 am

Got it. Thank you!
Sal
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Re: E-brake? (Now known as balance bar adjuster)

Postby sjgharib » Thu Sep 06, 2018 11:30 am

I put one in my car, but it was for initial setup versus everyday use. I never installed the "remote" knob.

Since I did a custom brake setup and needed to approximate weight transfer and brake forces front to rear, I figured having the ability to "dial in" wheel lockup front/rear was useful.

Basically (guys correct my memory here) you ideally want all 4 wheels to lockup at the same time. Front lockup early causes understeer, rear lockup early and you're spinning. Obviously one is more benign than the other, but even lockup means you're getting max braking before you loose traction (and control).

So if you look at it carefully, It adjusts the distance between the pedal and the front and rear master cylinders. The shorter the distance the more force to that cylinder. So adjusting it one way or the other will respectively give you more or less "bias" to the front or rear brakes. Since your weight shifts forward under most braking, you need less force in rear or else you'll lock them before the fronts (bad). So the idea is you brake to see what locks up first and adjust to get it as even as possible...
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Re: E-brake? (Now known as balance bar adjuster)

Postby danstern » Fri Sep 07, 2018 1:11 pm

Yes but since it will never be perfect, full tank of gas, turning, etc. it's better to have the fronts lock slightly sooner.
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Re: E-brake? (Now known as balance bar adjuster)

Postby sjgharib » Tue Sep 11, 2018 9:33 am

Excellent point!

Beware an exact answer to an approximate question :)
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