felix123
Active Member
Normally these kind of tangential arguments are annoying, but I find it absolutely delicious to watch the two biggest know-it-alls on the forum go after each other like this ?
I quoted ample reference, I quoted you, and I quoted my original statement that you took to issue. Here it is again:For a guy who doesn't know a bolster from a pedestal liner, you seem to think you know a lot about trucks.
Dan
https://www.hel.fi/static/hkl/artic.pdfAddendum: Took some time to find more detailed info on the bogies and the "steerable axles" (which is what I thought they meant, but it might be terminology used mostly in the West), and there's a number of really sensible engineering features to these vehicles. Excellent multi-page pdf:
As to how much I know or not is irrelevant to what the manufacturers state.For a guy who doesn't know a bolster from a pedestal liner, you seem to think you know a lot about trucks.
I'd say GE would have the answer, but you don't.There needs to be a linkage between the axle ends of each truck, and the truck itself. These have none of that.
https://www.nipponsteel.com/en/tech/report/nssmc/pdf/105-08.pdfNIPPON STEEL & SUMITOMO METAL TECHNICAL REPORT No. 105 DECEMBER 2013
Development of the New Concept Steering Bogie Yoshiyuki SHIMOKAWA*
[...]
2.5 Steering mechanism
The steering mechanism used for the SC101 bogie and its movement are shown in Fig. 11: it is a link-type steering mechanism wherein the swing bolster, the truck frame, and the axle boxes are connected with rods and levers. When a vehicle enters a curve and the bogie truck changes its angle to the vehicle centerline, the linkage members change their positions such that the axle boxes change their positions in proportion to the curvature. Because of this passive actuation, the link-type steering is highly reliable. Since conventional steering bogies change the positions of both wheel sets, the mechanism tends to be bulky. In contrast, the developed new steering bogie manipulates only one wheel set, and therefore, the mechanism can be designed compact and light-weight, and fits into the space of an ordinary axle-box suspension.
3. Development of New Steering Bogie [...]
Noticing that there were some discussions in the other threads about future streetcar orders. I ventured onto Finland's Skoda-Transtech site to take a look at the marketing material for the ArcticTram after seeing videos.
http://www.transtech.fi/railway/low-floor_tram
What really piqued my interests is whether Skoda-Transtech would be interested in participating in bidding for the future TTC order(s) now that Alstom-Siemens is establishing a base here. The ArticTram seems well suited for our network albeit with some modifications. And they incorporated a traditional free-turning bogie/truck unlike all the rigid trucks that modern low-floor trams use.
Especially since one of them actually DOES know a lot (if not everything) and the other knows VERY little (if not nothing!) Go Dan!Normally these kind of tangential arguments are annoying, but I find it absolutely delicious to watch the two biggest know-it-alls on the forum go after each other like this ?
https://www.mobt3ath.com/uplode/book/book-41708.pdf
The TTC have started installing the new (straight) overhead on KING STREET and appear to be working westwards from Sherbourne. (The 'junctions' of Parliament, Church, York etc have all (I think) been done as has much of the straight (tangent) wire elsewhere.
Of course "they" want it running with pantos and having KIng completed is in the 2019 schedule. I was simply reporting that a further tranche of King is 'underway". I agree it is a bit strange that all of King (from Leslie Barns) was not finished ages ago but the new overhead is not simply replacing wires and hangers, it also includes more traction power and THAT may be what holds things up.Why wouldn't they want the 504 Flexities running with pantos? King Street is gonna become pretty modern now with the permeant Pilot, so makes sense to convert it.
I had overlooked the “more traction power” thing. That does make it more than wire and hangers.Of course "they" want it running with pantos and having KIng completed is in the 2019 schedule. I was simply reporting that a further tranche of King is 'underway". I agree it is a bit strange that all of King (from Leslie Barns) was not finished ages ago but the new overhead is not simply replacing wires and hangers, it also includes more traction power and THAT may be what holds things up.
https://map.toronto.ca/toinview/It’s May. Is there a track reconstruction plan this summer?
"Pantomime" fits in there somewhere......panto-ization might be further along now