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Thread: Stradale Gearknob - Needs Work!

  1. #11

    Re: Stradale Gearknob - Needs Work!

    I have plenty of African Mahogany, maybe try that first and see what happens...

  2. #12
    Site Supporter ProtoTipo's Avatar
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    Re: Stradale Gearknob - Needs Work!

    Quote Originally Posted by AndyGuyton View Post
    Thanks Chris. Any idea what wood the original was made from, and what the threaded insert was turned from? Does anyone have an original that we could borrow to get them bang on??
    As John says, quite a dense grain.
    The captive thread is steel, I'll check the thread on the stick I have. The original stick is quite substantial, hence the 20mm ID on the knob.

    The colour of the wood changes a lot where the clear coating wears through (see photos of Beta S1 knob).
    Attached Thumbnails Attached Thumbnails Wood Knob 1.jpg   Wood Knob 2.jpg   Wood Knob 1.jpg  

  3. #13
    SEC Member David J's Avatar
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    Re: Stradale Gearknob - Needs Work!

    I have just removed the gearknob from the car, it is the Beta S1 type. I believe the thread to be M10 x 1 (fine thread)

    It has metal thread insert for wood as shown below.

    https://www.ebay.co.uk/itm/M4-M5-M6-...-/153044832859

    David

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    SEC Member David J's Avatar
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    Re: Stradale Gearknob - Needs Work!

    I forgot to add the thread insert is recessed well into the gearknob by a good 1.5” to 2”

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    SEC Member Guy Mayers's Avatar
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    Re: Stradale Gearknob - Needs Work!

    Quote Originally Posted by David J View Post
    I have just removed the gearknob from the car, it is the Beta S1 type. I believe the thread to be M10 x 1 (fine thread)

    It has metal thread insert for wood as shown below.

    https://www.ebay.co.uk/itm/M4-M5-M6-...-/153044832859

    David
    Ha! That explains a lot.. The insert on mine must be seized on the gearstick thread! It's been that way for 40 years!

    Guy

  6. #16

    Re: Stradale Gearknob - Needs Work!

    Thanks for the info David. They should be underway over the next couple of weeks. May get our own inserts machined...

    Quote Originally Posted by David J View Post
    I forgot to add the thread insert is recessed well into the gearknob by a good 1.5” to 2”

  7. #17

    Re: Stradale Gearknob - Needs Work!

    Click image for larger version. 

Name:	Wood Knob 2.jpg 
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    Slight discrepancy with the measurements. 74mm + 9mm = 83mm not 85mm. Which overall measurement do I go for?
    Maybe the measurements are to the start of the outer diameter radius?....that would make sense.

    Thanks chaps.
    Last edited by AndyGuyton; 14-03-2019 at 15:01.

  8. #18
    Site Supporter ProtoTipo's Avatar
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    Re: Stradale Gearknob - Needs Work!

    Quote Originally Posted by AndyGuyton View Post
    Slight discrepancy with the measurements. 74mm + 9mm = 83mm not 85mm. Which overall measurement do I go for?
    Maybe the measurements are to the start of the outer diameter radius?....that would make sense.
    Thanks chaps.
    The 74mm is the length of the flat part on the side, but it's on a slant, don't pay much attention to that.
    The vertical measurement from the bottom to the edge of the radius at the top is actually 85mm - 9mm = 76mm.
    The overall height is 85mm.

    I could make a proper engineering drawing on the computer?
    The drawing on the left of the above is the actual shape and proportion.
    Last edited by ProtoTipo; 14-03-2019 at 18:26.

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