edfmaniac wrote:The 13mm pump is a bit too much power for the stock caliper set up. It would be like a light switch and prone to sending you over the handlebars. My PS11 is almost mushy but provides a nice long linear throw and still has more than enough power for emergency stops. The 12 may be the way to go if you are looking for something more aggressive, yet still controllable.
I chose the 13mm because several Ducati 600cc and 750cc air-cooled models with single front disk and the Brembo caliper that Grimeca copied on the Skorpion use a 13mm piston Brembo master. Is that incorrect?
These are the bikes that used this particular Brembo master cylinder as original equipment:
KTM 640 LC4 SuperMoto 2005-2006
KTM 660 SMC 2004-2007
KTM 690 LC4 SM 2007-2009
KTM 690 LC4 SM-C 2008-2009
KTM Duke II 2000-2006
KTM Supermoto 2007
Another 13mm Brembo front master cylinder....
http://www.oppracing.com/product_displa ... -wlever50/(this one with the non-adjustable brake lever) came stock on the following bikes:
Ducati Monster 400 1995-1997
Ducati Monster 600 1993-2000
Ducati Monster 600 Dark 1998-2000
Ducati Monster 600 Dark City 1999-2000
Ducati Monster 600 Metallic 2000-2001
Ducati Monster 750 1996-1997
I read this treatise on matching calipers and master cylinders:
http://vintagebrake.com/mastercylinder.htmI think the front caliper on the Skorpion is a four piston design, with two 30mm pistons and two 34mm pistons:
http://www.oppracing.com/product_displa ... side-40mm/so the closest approximation of the swept area of the rotor in that chart was (I think) 32mmx4 pistons, which gives a leverage ration of 24.24 with a 13mm master cylinder piston.
Any additional thoughts?