forum.ww1aircraftmodels.com

WW1 Aircraft Modeling => WW1 Aircraft Information/Questions => Topic started by: petrov27 on May 18, 2017, 04:50:16 AM

Title: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: petrov27 on May 18, 2017, 04:50:16 AM

Hiya - just curious about this engine - the intake pipes seem to traditionally be depicted in a copper or burnt color on models and a few examples of the real thing I can find pics of, yet others, like the one on the TVAL Fok DVIII, the pipes are "silver" (aluminum?) color. Just wondered if there was any rhyme-or-reason to what is accurate for a 1918 engine? Maybe can be either? Thoughts?

Thankya!

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: RLWP on May 18, 2017, 04:55:12 AM

Take your pick:

(https://media.defense.gov/2005/Dec/19/2000575057/670/394/0/051019-F-1234P-023.JPG)

http://www.nationalmuseum.af.mil/Visit/Museum-Exhibits/Fact-Sheets/Display/Article/197463/oberursel-ur-2-rotary/

(http://www.enginehistory.org/Museums/LeBourget/OberuselURII.jpg)

http://www.enginehistory.org/Museums/LeBourget/leborget.shtml

Looks like there is some research to be done here. Are they both actually the same engine type?

Richard

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: RAGIII on May 18, 2017, 05:25:27 AM

I remember "Hearing/reading" that one had copper and one steel?. I don't remember for sure but I think the Lehrone was the copper piped one. I am sure I will be corrected if I am incorrect.
RAGIII

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: petrov27 on May 18, 2017, 12:21:00 PM

Thanks all for the feedback! Leaning to go with copper pipes on the URII then as it does add some visual interest/contrast vs the steel....

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: ALBATROS1234 on May 18, 2017, 08:00:07 PM

Well koloman would know if anyone. I guess we just need to check whatever refs because sometime captured engines were used. I always do copper because it looks nicer to me and adds visual interest. Then again I rarely do anything other than german stuff.

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: Bughunter on May 30, 2017, 05:31:40 AM

As far as I know there were two types:
- early types has curved pipes made from copper
- later they run out of copper, so there are straight one (easier to manufacture), made from steel

Here are the intake pipes of the Small Stuff kit, you will see the difference:
(https://lh3.googleusercontent.com/76_Vj7-DhJ3pQ_nth39Gu5S-Pt6d_-FtxsFj4d9OG6JTDJfg7hJSsf7d_-v4OFmxVTNXzdKkkN72oVq4oNAG0GLj5QvWw8EWjQfzqQDVrun7Dq-f1A4XNILOUefvRZr09r-3niVc0MYvCt4ziQ_pLDz05BJ9IMHvB7NSJJo4ZhipMTzQ2yh8gkJu_KCAJ6Xi-BtSl0Fv34URr5yaH4UT6CRXmqQfKsTVdHCUVu6zWKCHKgciYl_0IDKuWp7OTlw1136GR3PBLdcZGkyFufya7ZdjE5My5ieQir7Hnr-pEjIwCv7RmKFDvFJCqZjj-LD2bpKK2ZBtzx6pTs9ADr3rpY1wF52ZiQA0MZ-MoP5cdejv842rj8sbEoplR5IRwy_gqQZctP0nKkzA72eBMZ5GFGb3D7Y4PgWmGVYuQsVjIH9kZINRwZBm-gIqQHzbevuHZJcj_bZhDfu3b2eTWgKlACZfj4fY92r2IrIeGf9pCpusBhtWdjbPnLTSHDGFpVo3iMTpbLTfCiy93Q_TcrqAY4yk0OnH28aJQVio2aAin11w6jO8Gyc_j5pdsliydN5otZkfEN_NXdLPh-9qhfWpnoNLOd8s6ApU693yQEyIKtVm3mwU8JL-=w800-h516-no)

The picture above shown by RLWP shows the steel one, used in later Dr.I and in E.V ( so I used also steel for my model).

The copper variant can be found one the rotary of the Richthofen Dr.I in London:
(https://upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Iwm_Oberursel_engine.jpg/791px-Iwm_Oberursel_engine.jpg)
Source:  https://de.wikipedia.org/wiki/Datei:Iwm_Oberursel_engine.jpg

Cheers,
Frank

Title: Re: Oberursel UR.II Rotary - Intake Pipe Color/Material Question
Post by: petrov27 on May 30, 2017, 05:45:42 AM

Ahh - that is good info - thankya!!

Afraid I already applied copper to my DVIII engine pipes - now have to debate repainting back to silver  :o