Results 1 to 13 of 13

Thread: Changing a Montblanc 146 from brass to plastic piston?

  1. #1
    Junior Member
    Join Date
    Jan 2021
    Posts
    13
    Thanks
    0
    Thanked 3 Times in 2 Posts
    Rep Power
    0

    Default Changing a Montblanc 146 from brass to plastic piston?

    Hello there,

    Iím very lucky to own two Montblanc 146s, one from the 1980s with a plastic piston, and one made later with a brass piston. The plastic piston pen is my very favorite pen and is perfectly balanced in my hands. The one with the brass piston feels a little too back-weighted to me, similar to the Pilot Custom 823.

    Is it possible to replace the brass piston for a plastic one? If so, does anyone know any repair people in the U.S. who would be able to make that swap?

  2. #2
    FPG Donor ♕ Chrissy's Avatar
    Join Date
    Dec 2013
    Location
    United Kingdom
    Posts
    7,575
    Thanks
    3,779
    Thanked 6,606 Times in 2,687 Posts
    Rep Power
    17

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    The more modern pistons are brass and you are unlikely to be able to get someone to remove the brass piston and replace it with a plastic one. The other way around would have been easier.
    Regards, Chrissy | My Blog: inkyfountainpens

  3. #3
    Senior Member guyy's Avatar
    Join Date
    Feb 2017
    Location
    Brooklyn NY
    Posts
    542
    Thanks
    77
    Thanked 382 Times in 238 Posts
    Rep Power
    5

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    I think only the threads on the 1970s/1980s 146 piston mechanisms were plastic. They also had a good bit of brass in them, although not as much as the current models.

    I believe the barrels have changed slightly so that the older pistons wonít fit in the newer pens. Rather than messing around with the modern 146, i would suggest selling it or trading for a plastic piston version.

  4. #4
    Senior Member FredRydr's Avatar
    Join Date
    Sep 2012
    Location
    Carlisle, Pennsylvania USA
    Posts
    3,793
    Thanks
    955
    Thanked 4,258 Times in 1,843 Posts
    Rep Power
    13

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Quote Originally Posted by Kalyx View Post
    Is it possible to replace the brass piston for a plastic one? If so, does anyone know any repair people in the U.S. who would be able to make that swap?
    Go to FPN and send a PM to niksch. (He is a member here on FPGeeks, but inactive.)

  5. #5
    Senior Member
    Join Date
    Feb 2019
    Posts
    174
    Thanks
    37
    Thanked 146 Times in 78 Posts
    Rep Power
    3

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Sell it, and buy another with the piston you want with the proceeds.

    Go to a pen show and offer someone a swap.

  6. #6
    Senior Member
    Join Date
    May 2013
    Posts
    235
    Thanks
    148
    Thanked 96 Times in 58 Posts
    Rep Power
    9

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    As someone who has seen so many busted plastic fillers in 146s and 149s, Iím gonna go out on a limb here and ask, ďwhy?Ē

    Iím sure there have been failures with the brass fillers, but Iíve never seen one. I own a mix of about 40 146s and 149s... so thatís my sample set.


    Sent from my iPhone using Tapatalk

  7. #7
    Senior Member guyy's Avatar
    Join Date
    Feb 2017
    Location
    Brooklyn NY
    Posts
    542
    Thanks
    77
    Thanked 382 Times in 238 Posts
    Rep Power
    5

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Quote Originally Posted by lsmith42 View Post
    As someone who has seen so many busted plastic fillers in 146s and 149s, Iím gonna go out on a limb here and ask, ďwhy?Ē

    Iím sure there have been failures with the brass fillers, but Iíve never seen one. I own a mix of about 40 146s and 149s... so thatís my sample set.


    Sent from my iPhone using Tapatalk

    The OP said he or she thought the plastic thread version gave the pen a better balance thatís why.

    Are the newer piston units all brass? I havenít opened one up on a 146. As far as i know thereís still plastic stuff in there that can break, like the spindle.

  8. #8
    Senior Member
    Join Date
    May 2013
    Posts
    235
    Thanks
    148
    Thanked 96 Times in 58 Posts
    Rep Power
    9

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Havenít ever thought any of them (except the metal-bodied LeGrand pens) were off balance... but what do I know... I just write with them


    Sent from my iPhone using Tapatalk

  9. #9
    Senior Member guyy's Avatar
    Join Date
    Feb 2017
    Location
    Brooklyn NY
    Posts
    542
    Thanks
    77
    Thanked 382 Times in 238 Posts
    Rep Power
    5

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Quote Originally Posted by lsmith42 View Post
    Havenít ever thought any of them (except the metal-bodied LeGrand pens) were off balance... but what do I know... I just write with them


    Sent from my iPhone using Tapatalk
    I donít think itís unreasonable. I can see how a someone with a different hand & different grip could prefer a different weight distribution.

  10. #10
    FPG Donor ♕ Chrissy's Avatar
    Join Date
    Dec 2013
    Location
    United Kingdom
    Posts
    7,575
    Thanks
    3,779
    Thanked 6,606 Times in 2,687 Posts
    Rep Power
    17

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    I haven't removed a piston for many years but I remember the newer piston units have a small brass threaded unit. Not sure if the barrel has a brass threaded collar inside for it to screw into but I'm pretty sure the cone with the plastic rod attached doesn't have brass threads.

    The weight difference was probably considered minor compared with the fact that the earlier plastic pistons were more likely to break.

    I suppose that if all of your Mb pens have brass pistons then you buy one with a plastic version you might notice the slight difference in weight distribution. I think someone once talked about exactly how much it was over in the other place several years ago.
    Regards, Chrissy | My Blog: inkyfountainpens

  11. #11
    Senior Member FredRydr's Avatar
    Join Date
    Sep 2012
    Location
    Carlisle, Pennsylvania USA
    Posts
    3,793
    Thanks
    955
    Thanked 4,258 Times in 1,843 Posts
    Rep Power
    13

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Quote Originally Posted by Kalyx View Post
    ...replace the brass piston for a plastic one....
    What have you determined?

  12. #12
    Junior Member
    Join Date
    Jan 2021
    Posts
    13
    Thanks
    0
    Thanked 3 Times in 2 Posts
    Rep Power
    0

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Thank you all for your input! It sounds like replacing isnít really possible, and someone in a different thread around here posted a great article on dating Montblancs, noting that the plastic threads that I prefer are from the 1980ís or earlier. So I sold my pen with the brass piston and did a targeted search for a 1980ís pen with plastic piston threads and got it.

  13. The Following User Says Thank You to Kalyx For This Useful Post:

    Yazeh (April 24th, 2021)

  14. #13
    Member CS388's Avatar
    Join Date
    Apr 2013
    Posts
    94
    Thanks
    31
    Thanked 50 Times in 21 Posts
    Rep Power
    9

    Default Re: Changing a Montblanc 146 from brass to plastic piston?

    Quote Originally Posted by Kalyx View Post
    ... (snip)
    So I sold my pen with the brass piston and did a targeted search for a 1980ís pen with plastic piston threads and got it.
    Best possible result.

    Congratulations.

    Enjoy it in good health.

Tags for this Thread

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
  •