Here is a prelim finding by HSR committee on the same
135 Curves Have Nixed the 165 Kph dream on BLR-MYS Tracks
The dream of running high-speed trains on the Mysore-Bangalore-Chennai railway corridor just turned a tad sour. A two-day survey, which concluded on Sunday, by top officials of the High Speed Rail Corporation (HSRC) found there were 145 curves on the proposed high-speed route! Of these, 135 were on the Mysore-Bangalore stretch.
Speaking to Bangalore Mirror, HSRC Managing Director and Chairman Satish Chandra Agnihotri said: "There are 135 curves on the 140-km stretch between Mysore and Bangalore; another 10-plus curves dot the Chennai-Jolarpettai stretch on the Bangalore-Chennai route. We have recorded all the data and now have to analyse it."
Agnihotri said no new tracks will be laid and the plan is only to upgrade the existing track to accommodate the semi-highspeed trains, since the Bangalore-Mysore line was converted into broad gauge just recently. "The sharp curves on this stretch are a real challenge to enhance the speed levels at the 165 kmph range. Preliminary findings suggest we need new rolling stock that can negotiate these curves without getting toppled at such high speeds. We need to conduct in-depth studies on this.
Even 130/140 Kph suffices between BLR-MYS. I believe currently the max speed is restricted to 90 Kph for trains other than Shatabdi. The latter is allowed to run @ 100 Kph.A busy route Currently 27 trains ply on the Mysore-Bangalore route and 21 on the Bangalore-Chennai route. While the average speed on the Bangalore-Mysore route is around 55-60 kmph, on the Bangalore-Chennai route it is 70-75 kmph. It takes two hours for the Shatabdi Express to ply on the Bangalore-Mysore route while it takes four hours fifty minutes on the Bangalore-Chennai stretch. It's not surprising that the Bangalore-Mysore stretch has 135 curves. In fact, the 14-km track between Bangalore city railway station and Kengeri station alone has 28 curves.
Tilting rolling stock would work. I believe that's exactly what Briton did to run 200 Kph speed trains on old Victorian era curvy tracks.
Have the Chinese managed to copy tilting rolling stock design yet? They are supposed to help IR with high-speed rail execution.