by lotusflasherman » Tue 03.01.2017, 19:59
I've got the HiSpec 'Ultralite 2' rear calipers that I believe were part of Bob's conversion. Nice 2 pot caliper but the hydraulic handbrake is a nightmare and I believe is the reason they discontinued it. If you see some secondhand ... AVOID.
Use the footbrake and handbrake together and a hydraulic lock occurs in the handbrake module and won't release until the inner bleed nipple and banjo is loosened to release the pressure. I know that but sometimes I get the timing slightly wrong and catch the handbrake partly on when I stop the car rolling off the drive on the footbrake. I then set off with the handbrake partly on by fluid lock and rubbing - after a couple of miles the car starts slowing down as the disc has got hot enough (can be cherry red) to expand and start locking the rear wheel. Always the OSR caliper so have to find somewhere safe to pull up to deal with it and sometimes leave a skidmark down the road! Now done it so often that I'm like a F1 pitstop - as long as I've got the tools on board.
A lot of people have the PNM rear calipers. They convert a currently available VW single pot sliding pin caliper as a direct replacement for the OE caliper. I believe PNM can supply different brackets to suit whatever discs you put on the hub. They are numerous threads on here somewhere... I'm sure you're get some sound advice from the PNM users before too long...
Meanwhile here's the link to PNM
www.pnmengineering.com/lotus-elanm100-brakes.htmlBy the way... Bob's conversion used Billet 4 front calipers if you ever need parts from HiSpec.
Phil
Leave me alone, I think I know what I'm doing.
Cars: Subaru Forester 2.5XTN, Eclat Riviera, brace of Pacific Blue SE's, Collapso SE, Elan+2S.... and now an Evora