Close

Results 1 to 6 of 6

Thread: tap sizes

  1. spotcheem's Avatar Member
    Join Date
    Dec 2007
    Posts
    2
    Hi all, I've had a bunch of Pocher Alfa parts for decades and think I have a complete enough set of parts to build one auto. Since I'm retired now, and dealing with covid restrictions, I started building the Alfa Spider touring Grand sport.
    What size are the various screws? I want to buy the taps to clean up the holes as suggested by many. Thanks for any help.
    QUOTE QUOTE #1

  2. xken's Avatar VIP/Sponsor
    Name
    Kenneth
    Join Date
    Aug 2008
    Posts
    2,401
    You need to visit www.modelmotorcars.com they are an after market supplier of Pocher kit parts and supplies and hadware.
    "In wine there is wisdom. In beer there is strength. In water there is bacteria."
    Ken

    QUOTE QUOTE #2

  3. Bugatti Fan's Avatar Established Member
    Name
    Noel
    Join Date
    Oct 2011
    Posts
    137
    Being of Italian Origin the Pocher brand would have probably used fine Metric Screws. I have heard that they can be brittle and snap easily, so running a tap through the threaded holes would be a good idea. You could of course open up the holes slightly to take model railway (railroad) screws. You could probably source Drills, Taps and Miniature Screws/Bolts/Nuts a model engineering specialist. If you do go down this road get a chart showing the drill sizes for tapped holes.
    QUOTE QUOTE #3

  4. Nortley's Avatar VIP/Sponsor
    Name
    Buck
    Join Date
    Jan 2008
    Posts
    377
    Model railroad screws are 2-56 tap sizes , a standard machine thread. If the are slightly larger than the Pocher screws, conversion is a good plan. One can buy tools, taps, dies, and screws - in steel, stainless, or brass from any number of on line industrial, hardware, or tool companies, and at a better price than hobby suppliers.
    Scorpio - Builds models the way the prototype should have been built.
    QUOTE QUOTE #4

  5. Jo NZ's Avatar Yearly Subscriber
    Name
    Jo
    Join Date
    Sep 2011
    Posts
    444
    The large screws and threaded rods are M2. The self tapping screws are 1/16 “ whitworth - not an easy size to get a tap for. I made a tap by soft soldering a de- headed long screw into a piece of hex tube, and then used a needle file to cut 3 grooves along the screw.
    QUOTE QUOTE #5

  6. MODEL A MODEL's Avatar Yearly Subscriber
    Name
    don
    Join Date
    Feb 2017
    Posts
    1,706
    IF?

    Spotcheem is here in the states? Model train shops sell Walthers and Hob-Bits, as well does MicroMark, the hobby tool supplier. Please try to support your local hobby shop.

    These are American threads : 2-56 tap sizes , 1-72 tap sizes , 0-80 tap sizes , and 00-90 tap sizes . They are offered as Hex Heads, Button Head Slotted, Counter Sunk Slotted Flat Heads, and they sell nuts, washers, small Hex Drivers, and Taps, and finally Drill bits to be used with the Taps.

    Metric screws are available online, or through McMaster Carr, an excellent source for the modeler.
    -craftsmanship is a lifelong project of
    self-construction and self determination
    QUOTE QUOTE #6

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
  •  

Quick Scale Calculator

 
Scale Calculator   Scale Factor   Real Size:     + Deluxe Scale Calculator
  1: th   Which equals Convert measurement: Reset or clear:  
  Any Scale   Scale Size:     + Deluxe Metric Calculator
 
Top