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  1. cadastrophe

    Weldable steel for spindle?

    I am doing some axles for light weight trailers and I need to know what steel to use for the axle spindles. The spindles are roughly 1 3/4" diameter and will be welded into 3/16" wall carbon steel tube. The load per wheel is around 200#. What grade of steel would be weldable and also give a good...
  2. cadastrophe

    FireGL vs. Quadro graphics.

    Choosing a graphics card is one of the biggest decisions to make when working in CAD. What are the pros and cons of the two families (for say, a mid range card for no specific CAD software)?
  3. cadastrophe

    Will a seal wear aluminium noticeably?

    I am working on some elements of a hub which I would prefer to make out of aluminium (probably 6063) to reduce the weight of non-stressed parts. One of the items is a spacer on which a TC seal runs. Will the seal wear the aluminum? Should the aluminium be anodised to prevent wear? If so, what...
  4. cadastrophe

    What grade for aluminium brake discs?

    I want to have new aluminium discs water cut to my own size and pattern, but I do not know what grade of aluminium to use. The maker of the original discs was very guarded, only commenting that I should not use 7076. The discs only see low heat and the pads are Poly Matrix Q ceramic compound...
  5. cadastrophe

    Acetal on acetal bearing. Will it work?

    I have been offered a quantity of surplus acetal top hat style bushes that I am considering using for suspension pivots. The drawback is, the ID is quite large and I do not want to use a large internal steel bush because they will weigh too much. For lightness, can I use acetal for the internal...
  6. cadastrophe

    where to find Acme screw model?

    I have been looking for an accurate full Acme screw, but any so-called models I've seen on suppliers sites are just simple cylinders. Does anyone know where I can find a full model or information on drawing one? TIA
  7. cadastrophe

    Tube strength?

    I want to make a strong but light steel structure for a project with ERW tube. Which is the strongest round or square tube?
  8. cadastrophe

    Drawing of human model needed.

    Does anyone have a drawing of a segmented human (like artist's wooden models you can put in almost any position)? I would be very grateful if I could get hold of such a dwg or block. Thanks in advance.
  9. cadastrophe

    VW Beetle dimensions.

    I recently lost all my VW data. Does anyone have accurate drawings of a Beetle floorpan please?
  10. cadastrophe

    SAE papers on specific vehicles.

    I have searched the SAE site for papers relating to specific vehicles, without any luck. Is anyone aware of any papers or a source of detailed data/drawings of individual cars etc? TIA.
  11. cadastrophe

    Gearbox modifications.

    I have decided I'm fed up with neutral between first and second gears, and will re-mortgage my house, give away my first born child, and sell my soul in the pursuit of having a truly sequential 'box! Is there any reason a new selector drum couldn't be carved to this end? If so, what's involved...
  12. cadastrophe

    Tolerances.

    Sorry if this is enquiry is below this forum, but I am a keen-to-learn amateur, and new to all this. I have searched for references and tables of interference and assembly tolerences. Elsewhere, someone pointed out the Machinery's Handbook. Unfortunately I do not have one, nor can justify the...
  13. cadastrophe

    Wheel dimensions

    Does anyone know where I can obtain information on spun/rolled wheel dimensions, or possibly even drawings in .dxf? In particular, I'm interested in bead seat, radii, return lip, well and calliper clearance dimensions. Thanks.
  14. cadastrophe

    Material for drive shafts.

    What is the best material to use for making hollow/gun drilled CV type drive shafts, for use with a 180 hp vehicle weighing under 500kg/1100lb? Thanks.
  15. cadastrophe

    How to convert imperial to metric?

    I have some drawings in imperial units that I want to re-dimension in metric. I've changed the Units, and had a go at alering the Scale, but I'm obviously missing something. Anyone know how? Thanks.

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