BMW R7 Motorcycle Engine

Discussion in 'A Work In Progress' started by gbravo, May 10, 2011.

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  1. Jul 18, 2011 #141

    gbritnell

    gbritnell

    gbritnell

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    Congratulations on a superb build. This is the type of work I enjoy doing and really appreciate it when others do it. Now that you have this finished what is your next project?
    gbritnell
     
  2. Jul 18, 2011 #142

    dgjessing

    dgjessing

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    Fantastic! Now how about the rest of the bike? ;D
     
  3. Jul 18, 2011 #143

    gbravo

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    Now I am finishing the design of my next proyect, It will be replica of the Wright J5.

    German
     
  4. Jul 18, 2011 #144

    kustomkb

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    Outstanding!

    Beautiful work, I look forward to following the Wright build.

     
  5. Jul 18, 2011 #145

    gbravo

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    I will make a new video with another camera because the sound is not good.
     
  6. Jul 18, 2011 #146

    dieselpilot

    dieselpilot

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    The engine is excellent!

    Regarding the sound in the video. I notice many videos here have noise on video recordings due to unshielded spark ignition leads. I'm not sure if some cameras are better than others at rejecting this noise, but the camera is usually close to the engine in any case.
     
  7. Jul 18, 2011 #147

    gbravo

    gbravo

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    Is very possible,because this engine have both spark plugs in serial and all engine make noise.
     
  8. Jul 18, 2011 #148

    Lakc

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    EMI/RFI rejection is another problem with the commercial ignition systems, especially CDI with onboard voltage converters.
    With it running, grab a handheld AM radio and tune through the dial to see if you can hear the ignition system working.
     
  9. Jul 18, 2011 #149

    gbravo

    gbravo

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    As this is a stationary engine, and made to more similar possible to the original, this noise is an assume issue.
    The ignition coil is locate as the original position (upper the engine) and the spark plugs wires cross the upper case at front . For minimize this noise, the coils would be outside the engine and place more wires leaving the engine, dirtying the general appearance.

    If you compare those pictures with previous, you can see that I removed and arranged many wires and hoses.
     
  10. Jul 19, 2011 #150

    agmachado

    agmachado

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    Very cool... congratulations!!!

    Cheers,

    Alexandre
     
  11. Jul 19, 2011 #151

    kcmillin

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    Truly and Awesome Job! :bow:

    Well Done

    Kel
     
  12. Oct 10, 2012 #152

    IronKid

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    man, my respects!!!
     
  13. Oct 10, 2012 #153

    Herbiev

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    I too would like to know if you made the castings or machined from stock
     
  14. Jun 29, 2013 #154

    Charly82

    Charly82

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    Hello. First of all, awesome job, it looks and sounds fantastic.
    The reason why I joined, is to get in touch with you to see if it's possible for you to send me the blueprints of this engine. I'm trying to make a 3d model of it and I haven't been able to find anything acurate so far.
    If it's not possible I'll understand, I know this is something you've put a lot of time in to, and some people won't just give it away.
    Thank you for your time.
     
  15. May 26, 2014 #155

    vmo

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    Planes for download, please?
    (In Solidworks format helps).
    Good job. Congratiualtions.
     
  16. Jun 13, 2018 at 6:57 PM #156

    Peter M

    Peter M

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    Amazing job!!! What about rebuilding the R7 itself?




     
  17. Jun 13, 2018 at 10:39 PM #157

    kuhncw

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    German,

    You've done very nice work on a challenging project.

    I'm also interested in some photos of your CNC mill and shop.

    Chuck
     
  18. Jun 13, 2018 at 10:44 PM #158

    kuhncw

    kuhncw

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    Oh, sorry. I didn't realize I'd posted in a thread from several years ago.
    I'll go back and read through the thread.

    Chuck
     
  19. Jun 14, 2018 at 8:07 PM #159

    e.picler

    e.picler

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    Edi from brazil

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    Congratulations Gbravo!
    Very nice/amazing work. I will be following with great interest. What CAM are you using?

    Edi
     
  20. Jun 15, 2018 at 2:51 PM #160

    AdvenJack

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    Extraordinary!!! Outright Extraordinary!!! Many congratulations to you!!! :)
     

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