Thanks Thanks:  0
Results 1 to 15 of 15

Thread: Magneto Drive Gear

  1. #1

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like

    Magneto Drive Gear

    Hi
    I am replacing the Eisemann Magnetos on my A65 with Slick 4333. I cannot find any information on the torque value for the drive gear retaining nut. Also should the gear have a bit of end play. The nut has to be slacked off a bit to align with the pin hole in the shaft. Otherwise the nut has to be tightened hard to match the next hole. Do I have to use shims? Any advise would be appreciated.
    Thanks
    Roger

  2. #2
    behindpropellers's Avatar
    Join Date
    Feb 2003
    Location
    NE Ohio
    Posts
    6,681
    Post Thanks / Like
    SB96-7D should have it.

  3. #3

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    which drive gear, it takes a special one, are you using? slick or champion sells that gear for about the same price as the magneto. you can buy a new mag from them with the gear just about as cheap as the gear. maybe you have it figured out, im curious. the gear for that mag has a different offset so it aligns right with the gear in the engine. ive got some after a long search. but like i mentioned before maybe you have this figured out. continentals gear dosent work on that impulse mag. i just want to add this comment to this thread. for part numbers slicks m3998 is different than continentals 36067.
    Last edited by tempdoug; 06-28-2019 at 07:42 AM.

  4. #4
    cubdriver2's Avatar
    Join Date
    Apr 2003
    Location
    upstate NY
    Posts
    9,763
    Post Thanks / Like
    More knowledge over here on A65s.

    https://www.j3-cub.com/

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  5. #5

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like
    Thanks Glenn
    I think we have talked before. I am rebuilding a J4 Coupe over here in the UK.
    Roger
    Quote Originally Posted by cubdriver2 View Post
    More knowledge over here on A65s.

    https://www.j3-cub.com/

    Glenn

  6. #6

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like
    I bought a kit that consists of the 2 slick mags (4333), harness and 2 gears. The 2 gears supplied are different to the original and do away with the need for spacers.

    Quote Originally Posted by tempdoug View Post
    which drive gear, it takes a special one, are you using? slick or champion sells that gear for about the same price as the magneto. you can buy a new mag from them with the gear just about as cheap as the gear. maybe you have it figured out, im curious. the gear for that mag has a different offset so it aligns right with the gear in the engine. ive got some after a long search. but like i mentioned before maybe you have this figured out. continentals gear dosent work on that impulse mag. i just want to add this comment to this thread. for part numbers slicks m3998 is different than continentals 36067.
    Likes TCE liked this post

  7. #7

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    yep, the 4330 mags used the spacers and continental gears, and when the 4333s came out no need for spacers but they had there own gears. so your on track, thats all i was concerned about. so back to your original question go to the bulletin.

  8. #8

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    https://www.championaerospace.com/as...00-SB1-86C.pdf the 4333 is listed in this bulletin and read the top of page 9. hope this helps. heres the note out of it.
    NOTE: If the cotter pin will not align with the pin hole in the specified
    torque range, remove the nut and lightly lap the bottom of the nut
    with a piece of emery cloth and repeat steps E and F.

  9. #9

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    Quote Originally Posted by cubdriver2 View Post
    More knowledge over here on A65s.

    https://www.j3-cub.com/

    Glenn

    I disagree.

  10. #10

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like
    Quote Originally Posted by tempdoug View Post
    https://www.championaerospace.com/as...00-SB1-86C.pdf the 4333 is listed in this bulletin and read the top of page 9. hope this helps. heres the note out of it.
    NOTE: If the cotter pin will not align with the pin hole in the specified
    torque range, remove the nut and lightly lap the bottom of the nut
    with a piece of emery cloth and repeat steps E and F.
    Thanks. On the case now.

  11. #11
    cubdriver2's Avatar
    Join Date
    Apr 2003
    Location
    upstate NY
    Posts
    9,763
    Post Thanks / Like
    I did the same switch 10 years ago. Took me awhile to remember but I think I lapped the nut till I was happy with the hole alinement.

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  12. #12

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like
    All sorted now. No radio interference and easy starting. Lapping was not an option on the 4334 kit. The pin hole will line up within the torque values. Luckily the 4334 kit comes with its own special gears that does away with the need for spaces otherwise the mags would hit the firewall. I now need to buy another kit for the J4.

  13. #13

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    so why wasnt it a option? when they say it is in there service letter. curious.

  14. #14

    Join Date
    Nov 2013
    Posts
    18
    Post Thanks / Like
    The nut that holds the gear on is not flat where it mates with the gear. It has a lip that recesses into the gear.

  15. #15

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,178
    Post Thanks / Like
    thanks.

Similar Threads

  1. C90 main drive gear failure
    By Moonlight in forum Super Cub Sick Bay
    Replies: 14
    Last Post: 01-28-2008, 11:14 AM

Bookmarks

Bookmarks

Posting Permissions

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