Aico
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| posted on 14/1/08 at 05:20 PM |
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Rear brake setup Q
I see multiple Strikers which have drum brakes at the rear. Formula 27 also. Is there some reason behind this exept costs? Is it maybe lighter? Are
drums good enough for trackdays looking at brake balance only?
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Coose
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| posted on 14/1/08 at 05:23 PM |
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The majority of Sylva Strikers (i.e. pre-Raw) were live axle, using a Ford English. These never came with a disc set-up, so most that you will see
will still have the original drums. These did come in two sizes - standard were 8" and Mexico/RS were 9". You could also get various wheel
cylinder sizes, where the biggest came from the vans at just over 20mm diameter.
To be honest, a good 9" set-up is fine in a 7! 
Spin 'er off Well...
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BenB
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| posted on 14/1/08 at 05:23 PM |
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Se7enesque cars (particularly Strikers) are very light. Brakes usually aren't a problem..... Especially when you consider the % braking that the
rears do, drums should be fine.
If you're going live axle unless you pay up for a disc conversion kit you're often looking at drums... And nothing wrong with them either
with a light car.....
Of course if you're doing lots of track days you might want to enter the whole LiveAxle vs IRS debate and if you plonk on the side of IRS
you'll most likely be going discs....
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snapper
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| posted on 14/1/08 at 05:27 PM |
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If the axles are older non indipendant then most unless modified were drum, the early Sierra's and even upto the Mondeo's with the less
powerfull engines had drum rears.
In our lightweight aplications they are more than adiquate although possibly heavier than discs and calipers.
Most rear discs need some form of brake bias to stop the rears locking up befor the fronts
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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BenB
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| posted on 14/1/08 at 05:28 PM |
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Discs brakes are normally lighter than drums. Don't forget that one advantage of discs over drums is that discs have intrinsically better
cooling. Then again the fronts will normally be taking the most punishment.
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indykid
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| posted on 14/1/08 at 05:35 PM |
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quote:
Originally posted by BenB
Discs brakes are normally lighter than drums.
i was under the impression the sierra drum setup was lighter than discs with standard calipers
the tripode shafts are lighter than lobro too.
tom
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Avoneer
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| posted on 14/1/08 at 05:56 PM |
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And mine has 4 pots up front and 8" drums at the back and f*ck me could it stop at the end of the staight at Elvington and Donnington.
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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Aico
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| posted on 14/1/08 at 06:38 PM |
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Is there any advantage in brake balance? Or do the drums at the rear already produce maximum braking? Going from car -> kitcar the brake balance
might not be perfect? Or has this been taken care of?
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Coose
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| posted on 14/1/08 at 07:24 PM |
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In a BEC the braking isn't as much of an issue as a CEC. You have a fair chunk less mass to stop (on average probably 100kg), and you can use
this to your advantage by being able to hold significantly more corner speed, AND being able to brake much later.
If there is a brake imbalance it's probably easier and cheaper to sort with drums due to the wide range and cheapness of available wheel
cylinders.
Also, at the MOT last month my (ex) Striker was riding out of the brake tester on all wheels, not just the Willwood-shod fronts.... 
[Edited on 14/1/08 by Coose]
Spin 'er off Well...
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lsdweb
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| posted on 14/1/08 at 09:57 PM |
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Weights
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