Apropos of nothing, i was just perusing some other forums and ran across the info for Thrustmaster's apparently-stillborn load cell mod again. I had seen this previously, and I have an obvious professional interest in this "official" mod from Thrustmaster, so while looking over Thrustmaster's pre-release documentation again to try to figure out how they were mounting their load cell, and what type of load cell they are (were?) planning to use, I think I hit on something. If you've not seen their pre-release documentation on this, you can download the pre-release PDF here:
https://mega.co.nz/#!VoFCnR4I!bonD1TD8ERT9JMtomaV_9jsfjicBKKtY5q29br_FJXE
Here's the image from page 2 of that doc that shows how the load cell mounts in their design:
I've been pulling my hair out trying to find an inexpensive load cell that would mount like that, and I've come up with nothing. Looking again at the picture tonight, it struck me -- that is a mounting assembly that HOLDS the load cell . . . and I suddenly realized that it pretty much looks like they've adapted the same "bathroom scale"-type pressure-sensitive resistor that's used in Fanatec's CSP pedals to work with the T500 pedals.
Here's the pressure sensor used in Fanatec's CSP pedals:
And here's that superimposed on Thrustmaster's load cell prototype:
NOW I understand how they were going to make it work. Unfortunately, the pressure sensors in the Fanatec CSP pedals have a high failure rate -- nowhere near as durable as a "proper" beam-type load cell -- so that means the Thrustmaster load cell mod would have been prone to similar failure rates as the pressure sensors in the Fanatec CSP pedals.
Even though the pressure sensors used by Fanatec are fairly low-cost, that mounting bracket "carrier" that is designed to bolt to the Thrustmaster brake pedal looks like an expensive machined piece, so I'm wondering if the production cost of that piece may be what's delayed (or killed?) Thrustmaster's own load cell mod?
Anyway, I thought this was a cool little "discovery" -- I could be wrong, but it all seems to fit (literally!) now that I've puzzled it out finally.