A GENUINE KIND of gear replacement for 63307100 f355 timing actuator | Page 3 | FerrariChat

A GENUINE KIND of gear replacement for 63307100 f355 timing actuator

Discussion in '348/355' started by vincentf355, Sep 16, 2024.

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  1. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #51 vincentf355, Sep 26, 2024
    Last edited: Sep 26, 2024
    Thank you so much Steve for coming back with a thought on the material. Hope you come back again with your testing result.

    When choosing over-molded material for casting, I finally chose Enduro SOFT – Soft Rubber Casting Resin for my genuine kind of gear replacementI although I did have once considered the Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin but I was not sure by then how hard urethane is. There is a series product line with different hardness for urethane by Smooth-on.

    A strong but too hard material might be an issue for having noisy clicking as I mentioned at the very first beginning.

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  2. redwedge

    redwedge Formula Junior

    Sep 30, 2012
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    Steve C
    Just wanted to come back and update the thread with the news that I've found the polycarbonate 3D printed replacement gear to work well in the mechanism, unlike the PLA gear which failed almost immediately. Of course, longer-term, that may not turn out to be the case, but we'll see...
     
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  3. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    It is so nice of you for coming back with a update for polycarbonate 3D printing! Come back again with what you see for a longer-term case.

    Will you try urethane as steved033 mentioned or any material other than polycarbonate?
     
  4. redwedge

    redwedge Formula Junior

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    If the PC fails in a week, I'll try nylon printed via multi jet fusion.
     
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  5. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    Thank you very much Steve. Please keep us updated.

    Just a kind reminder for less confusion, in this thread, two different ways have been proposed to self make replacement gears.

    One is molding and casting replacement for the genuine kind over-molded two-piece timing actuator gear as I did.

    The other is 3D printed replacement for one piece gear, just like steved033 already did for timing actuator using nylon as well as Steve C already did for lid actuator using polycarbonate, while the material is kept trying with updates.
     
  6. redwedge

    redwedge Formula Junior

    Sep 30, 2012
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    Thanks for summarising the thread, Vince. I have considered another option, which is to buy some pre-made plastic gears (like the ones here https://www.igus.co.uk/gears/iglidur-gears) and stack them onto the axle.
     
  7. jjtjr

    jjtjr Formula Junior

    Aug 29, 2016
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    john truskowski
    ABS plastic will not work well?
     
  8. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #58 vincentf355, Oct 10, 2024
    Last edited: Oct 10, 2024
    Interesting! But I do not follow you well.

    I have looked into the gears one by one of https://www.igus.co.uk/gears/iglidur-gears and also looked back to your picture. However, I could not find one from igus.co.uk to match with your smaller broken part for replacement by stacking?

    Or, are you saying to order and procure the smaller part from igus.co.uk ,instead of 3D printed it?

    [​IMG]
     
  9. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    Not sure which method you are referring to? Molding/casting or 3D print?
     
  10. jjtjr

    jjtjr Formula Junior

    Aug 29, 2016
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    I was referring to 3D printing, I would think ABS wouldn't be as brittle as PC or nylon, but I am by no means a plastics expert.:)
     
  11. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #61 vincentf355, Oct 10, 2024
    Last edited: Oct 10, 2024
    Neither am I good at 3D printing.

    Guide to 3D Printing Materials: Types, Applications, and Properties told me that the material first subject to which printer, FDM, SLA or SLS, you have.

    Maybe steved033 or redwedge would like to help on your question by their own experience.
     

    Attached Files:

  12. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
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    Steering rack bushing should be machined from Delrin. ANY local machine shop can turn one for shops hourly rate of 1 hour which is always the minimum. $150 or so.

    One thing that list doesn’t show is the printing for SLS and MJF, MJF is typically a bit more precise but compared to machining. It’s still way off..

    also smooth around inner circles is not something they’re great at. it gets better if you vapor smooth it, but that does change the dimensions and when you need accuracy down to the thousandth of an inch, it’s a Knogo.

    I do all of them all of the time.
     
  13. Ferrarium

    Ferrarium F1 Veteran
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    BTW I find MJF has smoother and more accurate parts that SLA or SLS. I believe its resolution is .25mm. Even that is overly large for precision parts. For some reason when vapor smoothing that it has less dimensional loss. With SLA, the UV cured resins are not as tough as traditional thermoplastics. Parts start to degrade when exposed to UV light and moisture. MJF has no such issue. Strongest parts come with FDM and CF/peek with annealing I believe. But not so good for small gears.

    For a steering rack busing your looking at consistent 0.127 clearance or about 1/2 of what MJF printing generates and its not consistent the way a bushing turned on a lathe is inconsistent.

    I would never put a 3D printed bushing in a steering rack. Its actually very thin. Delrin or polished 6061. if you never want to do it again. If you want something slick check out Oilon. It's oil impregnated Nylon, it feels oily and wet to the hand but its not. Super slick, great for bushings.
     
  14. vincentf355

    vincentf355 Karting

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    #64 vincentf355, Oct 12, 2024
    Last edited: Oct 12, 2024
    Many thanks to Eric for elaborating on the 3D printing MJF Multi Jet Fusion technology which steved033 and redwedge once mentioned earlier, other than FDM/SLA/SLS in the table. It is a lesson for me.
     
  15. vincentf355

    vincentf355 Karting

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  16. vincentf355

    vincentf355 Karting

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    An update.

    A over-molded gear with perfect formula of PU rubber is now presented to you;). Finetuned craftmanship, fixtures and mold.

    Just to be clear, It is not 3D printed one piece. It is handmade over-molded two-piece gear the same as genuine/original.

    It had been listed on ebay for sales. Kind of restore service and your remaining useless disk shaft needs to be sent to Taipei first.
     

    Attached Files:

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  17. steved033

    steved033 F1 World Champ
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    WOW!!! GREAT WORK!
     
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  18. vincentf355

    vincentf355 Karting

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    Steve and Qavion, thank you very much for your "like" and compliment. It's being a honor!
     
  19. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
    215
    My gear has not yet failed - however - I would like to have one of your new ones on hand. Do you require my old gear in exchange or can I purchase your new gear without exchanging my old one?
     
  20. vincentf355

    vincentf355 Karting

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    #70 vincentf355, Jan 18, 2025
    Last edited: Jan 18, 2025
    Thank you very much for your interest.

    New old stock or used one is hard to find now. However, even if one located as I did, price is crazy and aging gear cracks only a matter a time.

    To have a direct spare is nice and reasonable. If I were you having a working old one, I would think about the same thing too. To send the reaming disk shaft first is indeed annoying I know.

    Any idea for the age of your gear? Have you opened the case and check the gear?

    If yours is fine, there is no too much sense to exchange your old good gear unless you think the same as I did, old one and even new old stock exist a aging issue with limited life span.

    Yes, it is possible you have my direct replacement without exchanging your good one. As mentioned earlier, I did have several good old gears and good disk shafts. However I am hesitated to sell then for the time being given the insane scarcity. Especially they serve as the standard for developing molds and fixtures and need to be kept. It is very unlikely for me to sell the good old gears given the aging issue. The most I can do is to use the good disk shaft and over-molded but it will cost much more if people like. Or to replicate the disk shaft which is not a option currently since developing fixtures, molds to make it precise and perfect, ex. no off-centering, will cost me lots of work and then cost much more.

    Long in short, I am not making money so honestly speaking, before a spare alternative is available and acceptable, live with the good one alone and come to me anytime when it cracks.
     
  21. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
    215
    Thanks for your advice. If you ever manufacture and offer a replacement please let me know. I would be happy to pay whatever it takes.
     
  22. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #72 vincentf355, Jan 20, 2025
    Last edited: Jan 20, 2025
    Sure. Thank you so much for your patience and interest among so little demands. "Whatever it takes", do you mean it? On the contrary, you deserved a discount of my cheap labor.

    A new old stock gear I based on to create molds happened to crack today, which I believe its time has come as a aging gear. A matter of time! Therefore I got a new disk shaft which could be possibly released.

    It is a bad news for me but might be a good news for you[​IMG];).
     
  23. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
    215
    I'm interested. If I understand correctly - you might be offering a used but serviceable disk shaft with one of your new over moulded gears attached. Please let me know if and when it will be available, how much it will cost and how to pay you. Thanks very much for your effort and ingenuity.
     
  24. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #74 vincentf355, Jan 21, 2025
    Last edited: Jan 21, 2025
    Deeply appreciate your interest among so little demands.

    Everything I sold shall be new. The disk shaft is an unused new old stock, either a new genuine disk shaft with no aging issue itself or a brand new duplicated one with much saving.

    I had sourced more than a dozen of similar now old stock actuators at a significant cost, after opening then I realized some with different gears and some with same genuine gears. However, out of these same unused NOS gears, some already cracked with no surprises and some luckily remain complete. The genuine gear broken this Monday was nice and complete at first, now it turned to be a new genuine disk shaft and is now working on duplicating.

    Certainly will let you know when duplicating is done which I hope soon. The price will listed on ebay with a discount for you. Payment needs go through paypal either on ebay or offline. Do you have a paypal account email?
     
  25. vincentf355

    vincentf355 Karting

    Feb 24, 2010
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    vincent tseng
    #75 vincentf355, Jan 22, 2025
    Last edited: Jan 22, 2025
    Forgot to attach the picture of what I mentioned unused new genuine disk shaft.

    It is now undergoing duplicating same disk shaft for who has a working actuator but want a spare complete two-piece gear, instead of a over-molded restore, less cost though, with annoying need to send the remaining disk shaft to me first.

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