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Type: Posts; User: martinw

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  1. Replies
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    Rack and pinnion

    Try NBC. I suspect they might be very pricey, but good luck anyway.
    http://www.nbcgroup.co.uk/powerTransmission.aspx?PageID=110
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    User-friendly lead-free solder

    Hello,

    Here in the UK, we are no longer allowed to use wire solder containing lead. I love tin/lead solder and have used it since the age of eight, a few years ago. It flows well on the tip of...
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    Mariss, I loved the computer. Thank-you.

    Mariss, I loved the computer. Thank-you.
  4. Replies
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    Matt, it was a cheap shot on my part. I...

    Matt, it was a cheap shot on my part. I apologise. After a long absence, visiting other forums who get very unpleasant on this subject, I forgot how polite CNCZ is. Bad manners. Sorry.

    Best...
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    Don't feed the troll.

    Don't feed the troll.
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    Fizz, More stuff from the neta site... I...

    Fizz,

    More stuff from the neta site...

    I think INTFR is a load of nuclear generated electricity coming from undersea cables from France. The French generate about 80% of their electricity in...
  7. Replies
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    Found it! Combined Cycle Gas Turbine and Open...

    Found it!

    Combined Cycle Gas Turbine and Open Cycle Gas Turbine

    Martin
  8. Replies
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    They are power stations running on Natural Gas. ...

    They are power stations running on Natural Gas. I think the GT part is Gas Turbine, but I do not know the difference between CCGT and OCGT.

    Sorry for not being much help.

    Best wishes,
    ...
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    Dear All, Now this is a site that is worth a...

    Dear All,

    Now this is a site that is worth a visit. It tells the truth about wind power, and what it contributes , in my country, towards electricity generation. Just scroll down a bit and you...
  10. Thread: Drying oven

    by martinw
    Replies
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    1,480

    Drying oven

    Dear All,

    Does anybody have a link to a quick and easy DIY assembled board drying oven?

    Our PCBs are assembled, and we clean off flux residues in an ultrasonic bath using an aqueous solvent,...
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    A quick note from the UK. I just spotted this...

    A quick note from the UK. I just spotted this from The Times...Dr Vicky Pope, chief propagandist of our Met. Office, doing her best to reassure the peasants. Looks like they didn't like the...
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    Heh, heh! Likewise. I am curious if the story...

    Heh, heh! Likewise.

    I am curious if the story will be reported in the media though. No matter, the cat is out of the bag, perhaps.

    Best wishes,

    Martin
  13. Replies
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    The CRU news is getting quite a lot of attention...

    The CRU news is getting quite a lot of attention in the UK, but not in the MSM.

    Here is a link that comments on the leaked info.
    ...
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    Dear Zeed, It would help us if you could let...

    Dear Zeed,

    It would help us if you could let us know what DC voltage you would like, and also the DC current that the circuit will need. Could you send us details of your transformer? Are you...
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    :)

    :)
  16. Replies
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    Dear Eric, This is fantastic! I was really...

    Dear Eric,

    This is fantastic! I was really surprised that you got the ball swing to last 15 minutes. I thought it would be a lot less, Oh me of little faith. Brilliant.

    Oh, yes.... will you...
  17. Thread: Fun stuff

    by martinw
    Replies
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    517

    I share your sense of relief.... but, heck, Danny...

    I share your sense of relief.... but, heck, Danny is blooming impressive, isn't he?

    Best wishes,

    Martin
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    Dear Arnoldo, I think you used the deflection...

    Dear Arnoldo,

    I think you used the deflection formula for a point load at mid span. My guess is that the length of the linear bearing and its housing is quite a large proportion of the the total...
  19. Thread: Fun stuff

    by martinw
    Replies
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    517

    Fun stuff

    Well, this may well be in the wrong place, and I apologise in advance, but I hope you enjoy this guy on his bike. It never fails to bring a big smile to me..

    YouTube - Inspired Bicycles - Danny...
  20. Dear pswayze, Please do not even consider...

    Dear pswayze,

    Please do not even consider acrylic. It is not easy to machine without specialist tooling, is liable to stress fractures, and will creep under load. Also, the coefficient of...
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    Occam's Razor? The simplest answer is probably...

    Occam's Razor?

    The simplest answer is probably the most likely.

    1) Did the aluminium smelter people screw up the ingredients when they brewed up a few hundred tons of the stuff? Possible, but...
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    Dear Jeff, My guess is that you were sent the...

    Dear Jeff,

    My guess is that you were sent the wrong spec. stuff by the people you buy your Al from. It was probably put in the wrong rack at their end, and you got sent it. It will be hard to...
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    Dear Russell, Namaste. I admire your...

    Dear Russell,

    Namaste.

    I admire your bravery. I gave up that game when I was aged ten, having realised how extremely dangerous it is. I managed to chip one of my teeth on a golf club, and...
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    Dear Yoram, I was not trying to ram the board...

    Dear Yoram,

    I was not trying to ram the board house route down anyone's throats. I just wished to make the point that if you pursue the method discussed on this thread, there are certain...
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    Dear Russell, It was never my intention to...

    Dear Russell,

    It was never my intention to "rubbish" anybody's work. You can cut dovetails by hand, or use a router and a jig. Different people like different methods, and if they enjoy the one...
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    Dear Eric, I think you are absolutely right to...

    Dear Eric,

    I think you are absolutely right to go for a rigid pendulum instead of "string", but maybe CalG's suggestion of a line pivot might be worth considering instead of ball bearings.

    Good...
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    Dear widgitmaster, What a fun project, and...

    Dear widgitmaster,

    What a fun project, and thank-you for posting.

    I worry about the bearings. Friction could be your undoing Could you perhaps try a mockup to get an idea of how the bearings...
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    Dear Russell, Those are all excellent points. ...

    Dear Russell,

    Those are all excellent points. Fast turnaround from a board house comes (price-wise) at the near vertical face of a very steep curve!

    For more years than I care to admit, I...
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    Dear CalG, That had me falling about! ...

    Dear CalG,

    That had me falling about! Thank-you.

    Best wishes,

    Martin
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    Dear All, Can I stand out as a total party...

    Dear All,

    Can I stand out as a total party pooper?

    Get a freeware pcb layout package somewhere, and use people like this..

    http://www.pcbtrain.co.uk/

    Modified printers, specialist inks...
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