Difference between revisions of "Brake discs"
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===Pads sticking to the disc=== | ===Pads sticking to the disc=== | ||
| − | The unservoed brakes on the S1 were criticised for not having enough initial bite when first applied, so Lotus used higher "grab" pads on the S2 to improve this. A byproduct of these pads is they tend to stick to the disc over a period of time, in damp or humid conditions this can happen within a couple of hours. This is something that affects the S1 as well but not to the same extent. Normally the stiction is limited to a clunk on pulling away, but with wet weather or if the car has recently been washed, the stciking can be quite severe. This however is not a problem its just [http://wiki.seloc.org/index.php/TADTS TADTS] | + | The unservoed brakes on the S1 were criticised for not having enough initial bite when first applied, so Lotus used higher "grab" pads on the S2 to improve this. A byproduct of these pads is they tend to stick to the disc over a period of time, in damp or humid conditions this can happen within a couple of hours. This is something that affects the S1 as well but not to the same extent. Normally the stiction is limited to a clunk on pulling away, but with wet weather or if the car has recently been washed, the stciking can be quite severe. This however is not a problem its just some thing you just need to be aware of, it is also just a case of[http://wiki.seloc.org/index.php/TADTS TADTS] |
===Vaxuall VX200=== | ===Vaxuall VX200=== | ||
Revision as of 13:43, 18 August 2006
Lotus OEM Fitment
S1 Elise
MMC
The earliest Elises were fitted with a very lightweight Metal Matrix discs, these discs had an extremely long life expectancy with a very low weight.
The down side of the discs was their fragility at high temprature and poor ability to shed water when driving in rain, often providing interesting moments for the driver if used in anger on a rainy day.
These discs were discontinued due to cost when problems were incurred with the original supplier.
Standard cast iron
These discs followed the MMC disc as the standard brake disc for the S1 Elise.
Standard discs (Vented)
Lotus Part Number: A111J0128F
Cross drilled
Lotus Motorsport discs as fitted to the 111s, Sport 160 and other models (Cross drilled and Vented).
Lotus Part Number: A111J0141F
S1 Exige, 340R
The Lotus Series 1 Exige, and 340R, was equipped with the same cross drilled disks as seen on the Series 1 111s and Sport 160 editions as shown above. These have a better ability to handle the heat generated with hard track use than the MMC disks
Lotus Part Number:A111J0141F
S2 Elise
288mm Vented Discs
The S2 discs feature longer, curved internal flow passages which increase the disc stability and reduce hot spot formation. The revised hole pattern has been specified to complement the new vane arrangement.
The discs are not handed, so the same disc is used on the right and left hand sides of the car. The cooling air flow through the left and right discs is identical and the flow rate is purely a result of pressure differential between the centre of the disc and its rim; the shape of the vanes and the direction of rotation does not affect the flow rate significantly. Some noise from the brakes themselves is to be expected but there is a fix to stop brake pads banging in the callipers.
Pads sticking to the disc
The unservoed brakes on the S1 were criticised for not having enough initial bite when first applied, so Lotus used higher "grab" pads on the S2 to improve this. A byproduct of these pads is they tend to stick to the disc over a period of time, in damp or humid conditions this can happen within a couple of hours. This is something that affects the S1 as well but not to the same extent. Normally the stiction is limited to a clunk on pulling away, but with wet weather or if the car has recently been washed, the stciking can be quite severe. This however is not a problem its just some thing you just need to be aware of, it is also just a case ofTADTS
Vaxuall VX200
?????ARE THESE THE SAME AS THE S2 DISKS??????
yet to be added
Lotus Exige S2 Disc Brakes
?????ARE THESE THE SAME AS THE S2 DISKS??????
yet to be added
Lotus Europa Disc Brakes
288mm Vented Discs with ABS
This is currently unconfirmed
Elise Upgrade Options
Lotus Motorsport Brake Bias Valve, as used on the Elise S2 Sport 190 and VX220 Sprint.
Ideal for race or track use - giving the ultimate configurable braking control in any conditions
(Part Number:ALS1J6012F)
???????Lotus Motorsport Brake Master Cylinder (Part Number:ALS1J6010F)????????
as used on the Elise S2 Sport 190 and VX220 Sprint. yet to be added
Lotus Motorsport AP 4 Pot Brake Calipers S2 Only (Part Number ALS1J6002_3F)
Lotus Offical upgrade kit for the S2
Lotus Motorsport supplied bolt on kit that comes with 2 x AP 4 pot alloy calipers with Pagid RS14 Pads and 2 x alloy bells with discs.
Fittings are also included.
Track Use Only
The pads are 16mm thick with an area of 43.2cm2 and are Pagid RS14 ceramic friction material.
They are full race pads with a medium to high friction value.
The discs are 310mm outside diameter and 28mm thick and weigh 4.9kg
The Caliper is a 2 piece aluminium alloy body with 38.10mm diameter piston bores. Weight is 2.3kg
Designed to fit the following cars using a 16inch Front wheel:
Elise S2 (with OZ wheels + 3mm spacer)
Elise 111R - with Exige S2/Forged Alloy wheels
Exige S2 - direct fitment
This kit will not fit Elise S1 or Exige S1.
Lotus recommend use with braided brake hoses
Lotus Part Number:ALS3J0040F
Price £1,762.50 inc VAT
Other sources of information
Elises.co.uk on S1 Disc Brakes