Link doesn't work man.
I sent them an email.
Thanks
Yeah the period at the end of the hyperlink messed it up.
Thats because they are holding the car on the steering stops most of the time. That kind of heat from that kind of use is to be expected. A more interesting question is if you see a lot of PS failures in drifting because it is a lot of heat for a very short time?
Unless you are doing autoX not having PS is perfectly liveable for track days with R compounds. If I was doing enduro racing with the car I would consider it.
Your pump needs a max pressure relief valve, it's getting "dead headed" at the end of the rack travel.
If you haven't seen a Formula D car in the last 4 years, you'd think so. Amateurs without knuckle mods and with street tires don't have P/s heat problems.
The reality is, it's a combination of the knuckle ratios giving the cars twice the steering angle that they used to have (with the same power steering pressure helping the rack get there - you need 50+* to be competitive nowdays), incredible steering speed demands (literally throwing the wheel from near one lock to the other), and the very sticky tires (front R-compound tires are bubbled in two runs, we generally keep them on for half a day). The guys that I'm mentioning with rotted dipsticks have so much max angle that they're rarely holding it at the stops ~ 1sec at a time tops.