where to get spoon calipers?


You are wrong about pad size...as when the pad size increases, the pressure decreases. If you won't take my word for it, read the technical whitepapers on Stoptech's website...or a GCSE physics textbook.

F=UR (greek U). It is based only on clamping force and coefficient of friction and nothing more. (-Assumed flat, hard solids in sliding contact).

Interesting point about the pedal feel - I found the flexibility was livable and liked the calipers while they worked, but Hoffmans motorsport paid a test house to assess the stiffness of various calipers and the hi-specs were by far the worse.

As I'd illuded - because they are so cheap they aren't terrible for the money, just don't hink they are AP racing quality.
 
3) Only increasing the effective radius of the disc, the caliper piston area, the line pressure, or the coefficient of friction can increase brake torque. Increasing the pad area will decrease pad wear and improve the fade characteristics of the pads but it will not increase the brake torque.
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From Stoptech
 
NLek said:
I appreciate your input but if the clamp force stays the same (which you can calculated by the pistons and master cilinder) and the diameter of the disc stays the same too then the only variable you have left is friction force of the pad which is determined by 2 factors: the cooefficent of friction and it's surface area.....so taken the Cof stays the same you will definitly loose friction force on or smaller pad.
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Contact area is not a factor in friction force.

What a smaller swept surface will do is concentrate the braking force on a smaller area (assuming disc OD remains constant) so the heat generated increases, as does the wear. The brake force though, remains almost completely unchanged. If it does change, it's down to the heat effects on the pad compound, or a larger lever arm as the CoP of the pad is further out than it would be with a larger (deeper) pad.
 
NLek said:
I appreciate your input but if the clamp force stays the same (which you can calculated by the pistons and master cilinder) and the diameter of the disc stays the same too then the only variable you have left is friction force of the pad which is determined by 2 factors: the cooefficent of friction and it's surface area.....so taken the Cof stays the same you will definitly loose friction force on or smaller pad. Sure you can also compensate this by use higher Cof pads which is done in racing but these will generate more heat too and put more stress on the brakesystem then you need better discs and brake duct cooling. So point is if you take an EK9 and you don't change anything but the calipers and you change them for smaller calipers/with smaller pads like the midilites it's a step back.
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Incorrect. The 2 factors determining frictional force are the Cof and upward reaction force (mass x gravity).
 
Marco said:
This is superb kit, much better then twinclock as it can use larger and bigger discs (more brake power and cooler), better foot feeling on braking and two piece rotor.

If i have track car this is the kit!!!
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Thanks Marco.
Yes these absolutely do the job.

lumi.jpg


dsc0104du.jpg
 
fljoshua129 said:
Incorrect. The 2 factors determining frictional force are the Cof and upward reaction force (mass x gravity).
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Ok correction, a smaller pad with same Cof and same pressure applied will not loose friction force.....only heat more and wear faster :))
 
NLek said:
Ok correction, a smaller pad with same Cof and same pressure applied will not loose friction force.....only heat more and wear faster :))
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Still wrong. Smaller pad with same force applied. The pressure will be higher.
 
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At this moment i have wilwood midilite with MG 282x25 discs and im very happy, but i will try to put some better discs next time, i whant to put 295x26 two piece disc to have more power and cooler brakes :nice:

But for fully trackcar this monoblock from spoon are stiffer and can use widder discs :)
 
Nice find! :nice:

JohnTurbo said:
Still wrong. Smaller pad with same force applied. The pressure will be higher.
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No, only pressure per cm but the friction force stays the same! Think of it as blocks of buildings, one is tall and small the other short and wide but they have both the same weight on the scale and the same Cof. According to the formula, it will take the same amount of force to move both buildings.
 
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Going to order these on friday my only concern is import duty! Has any one got parts from rhdjapan to uk before? And does the monoblock bolt straight on like the twin block with no mods? Been recomended dba discs with carbon larenz pads? What do think?
 
MY buddy bought a powerFC from nengun, and it came in wrapping paper!
 
Yes i have bought from RHDJapan think i paid £50 import tax on £1500 worth of goods, was a rather big box too. IMO get twinblocks, i did. Bolt straight on no hassle whereas monoblocks do not and were designed for EP3's/S2K's etc.
 
NLek said:
Nice find! :nice:
No, only pressure per cm but the friction force stays the same! Think of it as blocks of buildings, one is tall and small the other short and wide but they have both the same weight on the scale and the same Cof. According to the formula, it will take the same amount of force to move both buildings.
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Pressure is Force/Area. So you mean "force per cm". = Pressure. So your skinny building will exert a higher pressure (Like a pin) but the same force on the ground...and yes to push it will take the exact same effort.

Sorry for the OT>

I'd love a set of those Twinblocks. Very nice looking lumps!
Also they have the right piston sizes to suit the rears - pretty much the only aftermarket ones that seem to!
 
Yonny i got ur pm but i cant reply due to ive only got 6 posts! Pm me ur number if u want & ill give u a call tomorow at some point!
 
Received my new calipers from rhd japan worked out to £880 including import duty. Been looking for decent discs to use with the calipers. I have tried ebc and stoptech but seem to warp them very quickly! my car is boosted and my local track is hard on brakes. have been looking at dixel endless and project mu discs but cant seem to source them in the uk? what do you guys think would be the best discs? and any ideas where to source them?
 
Received my new calipers from rhd japan worked out to £880 including import duty. Been looking for decent discs to use with the calipers. I have tried ebc and stoptech but seem to warp them very quickly! my car is boosted and my local track is hard on brakes. have been looking at dixel endless and project mu discs but cant seem to source them in the uk? what do you guys think would be the best discs? and any ideas where to source them?
 
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