Out of topic,



n 1935, Thunes Mekaniske Verksted in Hamar, Norway, built three prototypes
of what was later known to be the "Dovregubbe", the "Dovre Giant", a
*tremendous* 1'D2'h4v with 2,600hp in spite of only 15.5t of axle load and
the official classification 49a (the two first prototypes with loco number
463 and 464) and 49b (the third prototype with loco number 465).

http://www.jernbane.net/norge/damp/tp49/49a463_01.jpg


There also exists an interesting booklet with lots of nice pictures. The
text is in norvegian, however, so you would have to be able to talk one of
the scandinavian languages to be able to read it.

Two similar Dovregubber (later classified 49c and having loco numbers 470
and 471) have been built by Friedrich Krupp in Essen, Germany.

The Krupp-Dovregubbe was tested in Germany before it was delivered to NSB.
The tests were done on express trains from Berlin to Wroclaw, Poland,
formerly Breslau. The engines were used on trains which normally were 01^10
hold and performed extremely well. They actually got the trains faster by
more than 20min from Berlin to Breslau or v.v. than the 01, in spite of the
fact that the Dovregubbe's speed limit was 100km/h. The reason for that is
that it "accelerated like a race-horse" (says the report of the testing crew
of Krupp engineers and DR drivers and conductors).


"tim" skrev i melding
oups.com...

Håken wrote:
anyone got some information on how to make deep drilling tool?

The OD needs to be 40mm and lenght 1meter.

Get a spade drill and mount it to a 1 inch shaft .The shaft will be
smaller than the blade to let the chips clear.
http://cgi.ebay.com/ws/eBayISAPI.dll...2477 799&rd=1