Go to Otherpower.com Home Page Go to Forcefield Shopping Cart Go to Wondermagnet.com Home Page
Front Page - [Homebrewed Electricity-- (wind) (solar) (hydro) (steam) (controls) (storage) (mechanical)] - Classifieds - Site News
Everything - Newbies - [Remote Living-- (housing) (heat) (light) (water)] - Rants & Opinion - Diaries - Our Products
at last a twin rotor | 16 comments (16 topical, 0 editorial)
Re: at last a twin rotor (3.00 / 0) (#10)
by blueyonder (windwoodgood at yahoo dot co dot uk) on Wed Aug 6th, 2008 at 05:18:28 PM MST
(User Info)

thank you guys for the comments.
  i did say in my first post i got to beef up the studding.
  but after reading the advice about the stator torque.
  which to be honest wasent aware just how strong it can get.
  and also putting the brake on in a howling gale.
  i was going to modify the stator holding brackets anyway.

  but now i am going to rethink on how to make it good.real good.
  as yet i havent had a mill running .so know nuthing about the power out
 or torque made as it generates.

  so its good i am thinging ahead to when its grunting a bit.
   it wasent meant to work two rotors and with the small studding honest..

  now to reply to each.
   spinning magnets .i to get envy  when looking at mills made here.
   but at least i am doing one myself now.
   maybe in the future you can build a nice gen sum ware.
   as your so interested maybe a friend or family member might want you to build one  
   for them.  who knows how lucky you might get.

   david hk.  yes your right spindly studding .
   stator isent made yet so just put it all together to check out how the shaft was                  
   fitting.
   the large nut on the back i might make into a castle nut.
   the back rotor wont ever fall off. as it pulls itself to the front one.

   thanks Andy. i just need make sure i wash my hands real good.
   before going to bed at night.

 hi lglagasse.  working on a good way to hold the stator tight.
    will post a pic of how i modify it. and ask for comments as to its
    strength etc

    hi tecker like every one else said .to spindly.  yes i agree .

   ungrounded -l-rod.
  a verry good page you posted.
   verry interesting reading. it made me do a bit of new type logic thinking.
    i have tried running it at 800 rpm in the lathe and it was verry calm.
    so the thing wasent under load. and had no prop. but seamed ok.

   hi flux as you also said  . i know a thing works ok on the bench but in real
   conditions its a different  story.
   am a working on it boss.
   now flux i have been testing coils .
   and with the info you gave me i got my lathe running at 220 rpm.
   my cut in speed.
    two strands 16awg and around 55 turns. it was spot on .
   or as thay say here right in the ball park.
    also tried the 14awg . it was over valtage at 55 turns.
    so would have ended up with skiny coils using the 14awg.
   so again you give sum great advice.
   and i put it to the test and was great spot on mate.
   hope i havent forgot to do a reply to any one.

    and as i said in the beginning of the post .i will put sum pics of the shaft.
    should anyone be interested to make comments on it.
    but you need to see the pics first .
    the thread at both ends is metric. its 20mm.

    also made a spacer to fit between the rotors .
    so at 1/2" min air gap i can put a spacer in to make it as wide as i need.
   two bits at the front hold the prop with a  20mm nut on each.
    also three bits studding go through the prop aswell to lock every thing tight .
    the nose cone has a 20mm threaded hole in the back so just screws on.

    i might have a go making castle nuts. 20mm is hard to find lock nuts.
   now to post a few pics.
   if you see any probs with shaft .dont hold back .
   well no one held back saying about the skinny bolts holding the stator.lol.











  just saw a pic with a white painted rotor.

   the idea being it might just help it stay a bit cooler. in strong sunshine.
   but more like it will have dirty hand prints on it verry soon.
   i think i will paint stator as well.
its a ill wind that dos no good



at last a twin rotor | 16 comments (16 topical, 0 editorial)

Menu
· create account
· How to use the board
· FAQs
· search the board
· Google search the board
· Old Otherpower Board

Login
Make a new account
Username:
Password:

Powered by Scoop
You must be a registered user to post here. It's easy and free, and the link is on the upper right side of your page.
All trademarks and copyrights on this page are owned by their respective companies. Postings are owned by the poster, but may be deleted or moved at the ADMIN's sole discretion. The Rest © 2003 Forcefield.
You can Email the board ADMIN here. PLEASE include the username you signed up with!