Page 207 of 207 FirstFirst ... 107157197205206207
Results 3,091 to 3,098 of 3098

Thread: Oddball engines and prototypes

  1. #3091
    Join Date
    7th October 2015 - 07:49
    Bike
    honda ns 400
    Location
    Lithuania
    Posts
    408
    JU-87 Stuka engine gear. Looks like teeth edges rounded directly in form at forging process.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	JU 87 Stuka.jpg 
Views:	40 
Size:	149.6 KB 
ID:	348703  

  2. #3092
    Join Date
    20th April 2011 - 08:45
    Bike
    none
    Location
    Raalte, Netherlands
    Posts
    3,054
    Quote Originally Posted by katinas View Post
    JU-87 Stuka engine gear. Looks like teeth edges rounded directly in form at forging process.
    I wonder what purpose this rounding might serve. Maybe to maintain an oil film between the side of the gear and whatever it may be leaning against in case of lateral forces?

  3. #3093
    Join Date
    7th October 2015 - 07:49
    Bike
    honda ns 400
    Location
    Lithuania
    Posts
    408
    The first thought that comes to mind, is teeth cracking prevention. This is the crankshaft gear that turns propeller gear.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	img-20170925-103230_orig.jpg 
Views:	17 
Size:	106.1 KB 
ID:	348707  

  4. #3094
    Join Date
    21st June 2012 - 14:20
    Bike
    1974 Yamaha RD250
    Location
    Camden, S.C. USA
    Posts
    87
    Yes,I agree that those fillets are to prevent cracking in that highly loaded part..I continue to be amazed at the very high quality of the parts built during wartime conditions with manual machines from all of the nations..My hat is off to all of the masters who have lived before us and that we may continue in their foot steps!

  5. #3095
    Join Date
    18th April 2017 - 23:08
    Bike
    Moped
    Location
    Swe
    Posts
    303
    I read a bit about that a while ago.
    https://www.geartechnology.com/issue...geardesign.pdf
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	E593D593-F8CE-4586-8566-D0BD7AC0E7C0.jpeg 
Views:	26 
Size:	101.1 KB 
ID:	348721  
    Last edited by Muhr; 17th March 2021 at 08:51. Reason: I misunderstood the question
    No amount of experimentation can ever prove me right; a single experiment can prove me wrong.

  6. #3096
    Join Date
    22nd November 2013 - 16:32
    Bike
    STRIKE trike & KTM300 EXC TPI
    Location
    Perth, Western Australia
    Posts
    777
    This makes con rods just so "ho hum"....

    http://www.nadiraksoy.com/
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  7. #3097
    Join Date
    4th September 2017 - 10:39
    Bike
    Daelim besbi 2008
    Location
    Espaρa
    Posts
    220
    Quote Originally Posted by ken seeber View Post
    This makes con rods just so "ho hum"....

    http://www.nadiraksoy.com/


    It reminds me of how diesel pumps work.
    This type of pump is serving as an orientation to create a specification for the two stroke engine
    Click image for larger version. 

Name:	unnamed.gif 
Views:	14 
Size:	32.4 KB 
ID:	348775

  8. #3098
    Join Date
    28th August 2015 - 00:01
    Bike
    1975 Hodaka Wombat
    Location
    Eugene, Oregon, USA
    Posts
    237
    Radial piston hydraulic pumps and motors have been built in a similar way for years. The translation into an IC engine hasn't worked. It's a lot harder to seal a piston that's not bathed in oil at moderate temperatures.

    Lohring Miller

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •