Thanks, John,
I learned about scroll compressors as an interesting anomaly when I was studying gas turbines at USNTPS. Clearly, I should have done more research - I have never heard the term being applied to turbines, but marketing people use a lot of - er - unusual terminology.
I copied my posts to Peter Ballard, for a sanity check and comment, but I presume I should not post his replies here though they are all jolly interesting. We are missing a lot of expertise here with the embargo on commercial members. One thing that did occur to me is that I do not have any data on wheel rate (spring rate at the wheel). If any TM member would like to measure it (you will need a 350 kg or so garage or personal weight scale) and I can provide the technique - I will get around to it sooner or later. I wrote to Nitron asking for details on spring and damper but received no reply…
And if anyone has a Plus 4 with the Dynamic Handling package with the rear anti-roll bar, let me know if you are willing to get data on roll stiffness using a slow drive over speed bumps.
The URL for the BMW training site is:
https://bmwtechinfo.bmwgroup.com/#/login, and it costs £32 for access for a day - but you can short circuit the site and access the manual for the B46/8TU engines using this link.
https://bmwtechinfo.bmwgroup.com/tech_training_manual/ST1837%20B46TU-B48TU%20Engines.pdf.Regards,
David Poole
