Saturday 27 October 2012

Brake master cylinder


Decided to have a go at fitting the brake master cylinder today (this is a Ford Sierra master cylinder that was part of the donor pack from MK).  Started by putting masking tape on the bulkhead, held up the master cylinder, marked the two holes and drilled them with a 3mm pilot hole.  It was at this point I realized that in the vertical position, the bottom outlet from the master cylinder would be obscured by the chassis rail.

A bit of research on the Locostbuilders forum told me this was a common issue with the Indy R.  Someone had tilted their master cylinder slightly, someone else had made an aluminum packer.

I decided to go the packer route as it had three advantages……  It lifted the outlet away from the chassis rail giving enough room to get the fitting in, it levels the reservoir and allows better brake ratio by allowing the push rod to be fitted further down the brake pedal.

I made a packer from several pieces of 3mm steel plate welded together which would have done the job, however it looked awful.  I have decided to remake the packer from a block of aluminum.




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