RMweb Gold PaulRhB Posted November 5, 2020 RMweb Gold Share Posted November 5, 2020 This was inspired by a photo in the Transpress ‘Die Harzer Schmalspurbahnen’ book that showed a photo of Rak2 a rocket powered sled that reached 219km/h on 12th October 1928, (dates on the photo are actually for the runs of Rak1 in the video below) Photo of Rak2 after the run https://www.alamy.com/stock-photo-test-drive-of-the-rocket-car-rak-2-1928-48390971.html?pv=1&stamp=2&imageid=12A79FDD-D08B-465B-9AC4-EF6A9358FF07&p=291611&n=0&orientation=0&pn=1&searchtype=0&IsFromSearch=1&srch=foo%3dbar%26st%3d0%26pn%3d1%26ps%3d100%26sortby%3d2%26resultview%3dsortbyPopular%26npgs%3d0%26qt%3dmax%20halberstadt%26qt_raw%3dmax%20halberstadt%26lic%3d3%26mr%3d0%26pr%3d0%26ot%3d0%26creative%3d%26ag%3d0%26hc%3d0%26pc%3d%26blackwhite%3d%26cutout%3d%26tbar%3d1%26et%3d0x000000000000000000000%26vp%3d0%26loc%3d0%26imgt%3d0%26dtfr%3d%26dtto%3d%26size%3d0xFF%26archive%3d1%26groupid%3d%26pseudoid%3d%26a%3d%26cdid%3d%26cdsrt%3d%26name%3d%26qn%3d%26apalib%3d%26apalic%3d%26lightbox%3d%26gname%3d%26gtype%3d%26xstx%3d0%26simid%3d%26saveQry%3d%26editorial%3d1%26nu%3d%26t%3d%26edoptin%3d%26customgeoip%3d%26cap%3d1%26cbstore%3d1%26vd%3d0%26lb%3d%26fi%3d2%26edrf%3d%26ispremium%3d1%26flip%3d0%26pl%3d Someone then posted the link to the video below of the Rak1 trials and crash in July 1928 on NGRM. Translation of the video. July 17, 1928, Friedrichshohe, Harz, Saxony-Anhalt, Germany. Test run of an Eisfeld-Valier drive system on a simple rail bus (chassis mounted on steel wheels) on the Harz narrow-gauge railways in central Germany. The car leaves the starting point and reaches a speed of over 100 km per hour. July 25, 1928. Another test run of the rocket propelled rail bus. The car reaches a speed of 180 km per hour. July 26, 1928. Official speed of the Eisfeld-Valier-Rak. On this third run, the car reached 180 km / hr but continued its strong acceleration, causing it to derail and fly the distance at an estimated speed of 300 km per hour. https://www.criticalpast.com/de/video/65675024381_Raketentechnik_Eisfeld-Valier-Rak-1Auto_Test-auf-Schmalspurbahn_Friedrichshohe-Deutschland_Stiege-Deutschland So I wondered what it would look like . . . I couldn’t find any suitable rocket motors for HOm but the small Estes rocket motors might just fit in G scale. 1 Link to post Share on other sites More sharing options...
KeithMacdonald Posted November 5, 2020 Share Posted November 5, 2020 I think we'll find that was a test-bed for the rocket motor technology. Which, it seems, was quite effective. Just a few years later, they put wings on it, tilted the metre gauge track up at an angle of 30 degrees, and aimed it at London. 1 Link to post Share on other sites More sharing options...
RMweb Gold PaulRhB Posted November 5, 2020 Author RMweb Gold Share Posted November 5, 2020 11 minutes ago, KeithMacdonald said: I think we'll find that was a test-bed for the rocket motor technology. Which, it seems, was quite effective. Just a few years later, they put wings on it, tilted the metre gauge track up at an angle of 30 degrees, and aimed it at London. That was a pulse jet not a rocket Rocket powered vehicles were quite popular in the late 20’s for speed records. 1 Link to post Share on other sites More sharing options...
RMweb Gold Oldddudders Posted November 6, 2020 RMweb Gold Share Posted November 6, 2020 It has something of Last Of The Summer Wine about it, with close connections to Heath Robinson. Link to post Share on other sites More sharing options...
pH Posted November 6, 2020 Share Posted November 6, 2020 “The Fastest Man on Earth”: https://en.wikipedia.org/wiki/John_Stapp 1 Link to post Share on other sites More sharing options...
RMweb Gold PaulRhB Posted November 6, 2020 Author RMweb Gold Share Posted November 6, 2020 5 minutes ago, pH said: “The Fastest Man on Earth”: https://en.wikipedia.org/wiki/John_Stapp Yes and at least his experiments were for science over personal glory too and well documented. There’s a documentary about him I’ve seen a couple of times. I’m chatting to a friend who holds appropriate licenses to keep the propellant more controllable and safe than even the Estes option so I better get on with the sled Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now