my bike powered car
#31
Posted 03 January 2006 - 10:56 PM
cheers ANDY
#32
Posted 04 January 2006 - 09:24 AM
slightly off topic, sorry..Is that a KAD bias pedal box i can see lurking there on the bulkhead??
What size cylinders are you running ? .625 for the front and .75 for the rear?
What front brakes have you got on it ??
Mark :wales:
asked colin at KAD about m/c and the bias setup a little while ago, here is his reply:
For most applications we supply 5/8" front and 13/16". This works for a
>> standard-ish F-R weight distribution. Where the car has been lightened a
>> great deal at the back then a larger rear master cylinder is used which
>> provides lower line pressure for a given stroke. The drawback to this is
>> only cost as we then cannot use the lower priced integral reservoir
>> cylinders and have to use the remote reservoir ones which are more
>> expensive and add the complication of siting the reservoir at a point
>> where the fluid can gravity feed the cylinder.
>>
>> The whole subject of wheel lockup gets complicated by the vehicle dynamics
>> under braking, weight transfer occurs and this primarily depends on the
>> combination of height of the centre gravity and the front to rear weight
>> distribution. If the back is lightened by taking out the rear subframe
>> then the weight distribution alters unfavourably as far as wheel lock up
>> is concerned, there is less weight available for tyre adhesion and the COG
>> height remaining essentially the same. Hence less rear braking is
>> required.
hope that helps
#33
Posted 04 January 2006 - 04:19 PM
cheers ANDY
#34
Posted 04 January 2006 - 07:33 PM
The rear surface area with the sierra calipers is about 5-6 times that of a mini brake cylinder so that explains why they are locking up. I am a bit puzzled why other people with a zcars kit haven't come across rear lockup, unless nobody has used one properly on a track yet?? Surely Lee Olivers white mini would have been the same?? I know my car is quite a bit lighter than most of the others but it shouldn't make too much difference should it?? I think the rear end weighs about 260Kg..
My brakes were sh*t to begin with but a new set of front discs and pads made an enormous difference.
#35
Posted 05 January 2006 - 01:06 PM
cheers ANDY
#36
Posted 05 January 2006 - 06:35 PM
which master cylinder are you talking about, there are many types?
#37
Posted 05 January 2006 - 10:13 PM
#38
Posted 06 January 2006 - 07:07 PM
http://www.demon-twe...code=GDR90-1000
:tongue:
#39
Posted 06 January 2006 - 07:19 PM
#40
Posted 06 January 2006 - 07:25 PM
#42
Posted 06 January 2006 - 07:35 PM
cheers
#43
Posted 06 January 2006 - 07:48 PM
You can also change that pressure depending upon the conditions, eg. road surface, wet, dry etc so they are usually in car adjustable.
#44
Posted 06 January 2006 - 07:55 PM
#45
Posted 07 January 2006 - 12:14 PM
ANDY
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