Wilwood Kart Master Cylinders

[james17]

UTSA is contemplating using Wilwood's shifter kart/jr dragster master cylinders and were wondering if any one has anything good bad or otherwise to say about them. Also, if any one has a decent drawing of the cylinders we would be more then thankful for a copy of it.

James Higdon
2004-2004 SAE@UTSA Chief Tech. Director

[james17]

UTSA is contemplating using Wilwood's shifter kart/jr dragster master cylinders and were wondering if any one has anything good bad or otherwise to say about them. Also, if any one has a decent drawing of the cylinders we would be more then thankful for a copy of it.

James Higdon
2004-2004 SAE@UTSA Chief Tech. Director

[bigtoyota9]

I would strongly advise against using this master cylinder. When i was on our schools baja team i designed a hand operated "Cutter" brake for the rear of the car. I used this master cylinder for this purpose. I dont think its seals are designed to be used repeatedly. We had a major problem with the piston leaking and the whole master cylinder malfunctioning. I think this would be a poor choice for a brake or clutch master cylinder. The wieght savings cannot be that much, I would just go with the standard wilwood master cylinders, they offer two lightwieght master cylinders that are more than enough for an FSAE car.

[OrangeODU]

Yeah I would definately not go witht he Jr Drag mastercylinders. They work well with that specific application but would be very poor for your application. They have been used around here in arena cars. They might hold up if you are running small wheels and tires and do not mash the brake...

[james17]

Thanks for the responses, one member of the team actually called wilwood to get the working and max pressure of the cylinder and was given then numbers of 1200 working psi and 1500 max. Theoretically that should be more then enough for any brake or clutch system were going to build. Were the problems your groups have had associated with the cylinders being bottomed out or being pushed past the recommended pressure ratings? Are the cylinder seals easily replaced in the event of a blow out? Thanks again

James Higdon
04-05 SAE@UTSA Chief Tech Director