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Type: Posts; User: BobL

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  1. Replies
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    I agree about being lucky with being able to...

    I agree about being lucky with being able to completely replace shed air in our climate. Even when it's hot as hades outside and I have the AC on, if I do end up using the DC for a quick dust making...
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    One way to tell if a chuck is half decent is if...

    One way to tell if a chuck is half decent is if the specs provided include a "run out" spec then exactly what that spec is.

    Neither H&F or McJing specifically provide this specification, although...
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    Interesting to see that many Chinese production...

    Interesting to see that many Chinese production workers are deemed too expensive (more like don't make the manufacturers enough profit) so they are no being outsourced to places like Vietnam and...
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    The work safe standards in AU are as far as I...

    The work safe standards in AU are as far as I know still 5mg/m^3 for softwood, 1mg/m^3 for hardwoods, 0.5mg/m^3 for MDF and WRC.
    The 5 and 1 mg/m^3 are based on British standards which are based on...
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    given the low cost of interest theses days and...

    given the low cost of interest theses days and typical payback time of between 2.5 and 4 years, from what I can see it's a no brainer. Payback time depends on things like, usage patterns, roof layout...
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    yeah this was a 40C day and 28C night so we had...

    yeah this was a 40C day and 28C night so we had the ACs on all night so soar was only able to provide half the energy needs. On a cooler clear day with no ACs running the solar should on average...
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    Reuter’s reported just now that major Chinese...

    Reuter’s reported just now that major Chinese shipping companies are starting shipping later next week or early the week after so you shouldn’t have to wait for your widgets much longer :)
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    I agree about the eggs in one basket. ...

    I agree about the eggs in one basket.

    Globalisation is sourcing out to the cheapest producer/supplier of eg clothing, energy, construction, food, services, IT, motor vehicles, movies, music,...
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    I agree, it's a bit too easy to blame...

    I agree, it's a bit too easy to blame "globalisation" , including by many that willing take advantage of it.
    Perhaps the underlying cause is "greed"? or another way to look at it is, "looking for...
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    Here's a typical power in/out profile for a good...

    Here's a typical power in/out profile for a good clear 40ºC day
    The previous day was hot so all 3 House ACs were left on the whole night.
    Orange is power consumed, pale blue is solar PV power, Dark...
  11. Thread: cheap bellmouths

    by BobL
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    384

    at least that's water soluble so clean up would...

    at least that's water soluble so clean up would be better than oil.
    Thermally it would be similar to oil.
    It would make sense if there was a need to make dozens but for just a few it's quicker to...
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    Solar PV system experience

    A few weeks back we had a 6.3/4.8 kW PV system installed. My 4 brothers and 5 sisters all have solar and most have had it for some time. One of the reasons we put off doing it was the awkward shape...
  13. Thread: cheap bellmouths

    by BobL
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    384

    Radius of 100mm duct is 50mm. Half radius is...

    Radius of 100mm duct is 50mm.
    Half radius is 25mm.
    100 + 25 on one side + 25 on other = 150 mm total
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    Our solar PV installer said they aleady don't...

    Our solar PV installer said they aleady don't have supplies of some panels and he he only can get supplies of others for another couple of weeks worth of installs. Then he can take a much needed...
  15. Thread: cheap bellmouths

    by BobL
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    384

    I think they may be too thick to do this unless...

    I think they may be too thick to do this unless perhaps a press is used. With the standard thickness PVC ducting hoods the tail stock on my lathe is close to its limit in providing the required...
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    It's interesting to see AC is an added feature...

    It's interesting to see AC is an added feature these days on many higher end welders with some machine providing a hybrid Pulse, with both DC and AC components. This of course is all done by using...
  17. Thread: cheap bellmouths

    by BobL
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    384

    The keeping it away from the floor or any other...

    The keeping it away from the floor or any other obstruction is good point.
    For anyone else doing this test, it the DC vents outside the shed watch out for any preferred air movement cause by air...
  18. Thread: cheap bellmouths

    by BobL
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    yep sure but the op has 5” ducting/flex ...

    yep

    sure but the op has 5” ducting/flex

    thanks
  19. Thread: cheap bellmouths

    by BobL
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    384

    Some real nice pics in that link Dave will have...

    Some real nice pics in that link Dave will have to take a closer look when I get back to the laptop. Currently working of this tiny phone so can’t see much.
  20. Thread: cheap bellmouths

    by BobL
    Replies
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    384

    I’m really sorry for editing over your Previous...

    I’m really sorry for editing over your Previous post. I’m doing this on my very small mobile and it’s too easy to hit the wrong buttons. I get heaps of weird auto correct spelling probs and am going...
  21. Thread: cheap bellmouths

    by BobL
    Replies
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    384

    Yes its close and as it turns out the outer most...

    Yes its close and as it turns out the outer most edge has the least effect but I was just pointing out the simplest ideal shape for WW machinery is (ideal is a trumpet shoe)


    Sure but if you're...
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    The passenger side and front windows of my van,...

    The passenger side and front windows of my van, and the rear window of the station wagon, are constantly covered in doggie nose prints. To remove this we use a bit of vinegar diluted with water and ...
  23. Thread: cheap bellmouths

    by BobL
    Replies
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    384

    FWIW a 150 mm BMH should be ~225 mm across the...

    FWIW a 150 mm BMH should be ~225 mm across the widest part.
    The other issue with those BMHs is that they don't have a truly smooth transition from the curved to straight part of the duct.
    Check...
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    7 HP is definitely not 240v territory and I don't...

    7 HP is definitely not 240v territory and I don't really see this as small hobby shop territory either.

    GCs comment on available power in the street is increasingly important as more battle axe...
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    Messiah was THE text the year before us at uni...

    Messiah was THE text the year before us at uni but the lecture decided to try us on a “new” generation text as the previous years stunes found it “difficult”. Messiah was then made the Honors text...
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    I found some of my old lists of audio books I...

    I found some of my old lists of audio books I listened to between about 2010 and 2012. These were mainly old out of copyright books from Librivox, the free audiobook service. I listen to these until...
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    You can downsize the motors on some machines but...

    You can downsize the motors on some machines but not always. DC and Compressor motors cannot usually be downsized. OTOH machines like Bandsaws can be easily downsized as they rarely hit peak power...
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    The problem with comparing the Oneida and your...

    The problem with comparing the Oneida and your results is that we don't know their actual setups (eg naked or hooded air intakes, testing using a proper test duct or just waving an air flow meter in...
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    There will be a cost of connection from the...

    There will be a cost of connection from the street to the house, a new breaker box and meter, and the sparkly will in that process connect different single phase household circuits up to different...
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    Go to the electronics forum an read the VFD for...

    Go to the electronics forum an read the VFD for newbies doc and it will answer many of your questions.
  31. Replies
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    The main paper book I'm rereading is ATM 1984,...

    The main paper book I'm rereading is ATM 1984, the main audio book is Aeronuats, a history of ballooning, the other one is a bio of Maralin Manson. I'm just about finished the story of the kids that...
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    Right now I'm in the middle of, I think it's 4...

    Right now I'm in the middle of, I think it's 4 paper based books, 2 ebooks, and 2 audio books - none of them about WW.
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    This vertigo has really hit SWMBO hard and I...

    This vertigo has really hit SWMBO hard and I spoke too soon about her getting better

    On Sun / Monday things went slightly backward and all SWMBO could do was crawl to the bathroom every now and...
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    That Grizzly saw you refer to is what we call...

    That Grizzly saw you refer to is what we call here in Australia a 10" Contractors table saw.
    I have a very similar saw except mine has a 12" blue.

    I got mine about 15 yearS ago and found an...
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    Replacing DC plastic bags back on is dead easy...

    Replacing DC plastic bags back on is dead easy using 3 - 4 REE magnets. Mine were even more awkward when inside an enclosure with no visual access behind the bag but magnets made it quick and easy....
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    Maybe a call would be better as he’s already done...

    Maybe a call would be better as he’s already done this once and probably doesn’t want to keep doing this. However, given the poor state of staff knowledge in stores these days maybe that would be...
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    Something that few folks (they are all over UT)...

    Something that few folks (they are all over UT) who use third party separators on vanilla DCs appreciate, is that to obtains optimised flow and particle separation from any DC/Separator combo...
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    Those screen are notorious for getting choked up...

    Those screen are notorious for getting choked up with shavings. At the men’s shed their dc3 was constantly getting block and members carried on using it even when dust was not bing collected. I...
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    As I said above, for standard fluoro LED...

    As I said above, for standard fluoro LED conversion the starters must be removed.
    If the old fluoro fitting contains a magnetic ballast these can be left as is and LED tubes installed and they...
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    Just in case you haven't seen this one. Lolla...

    Just in case you haven't seen this one.
    Lolla the mechanic dog.
    Not mine but my bros.
    Its an extremely interesting dog, affectionate but also knows her own mind....
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    Sympathies and best wishes. I’m gonna be the...

    Sympathies and best wishes.
    I’m gonna be the same with our dogs!
  42. Replies
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    Bill has has subjected separators to fairly...

    Bill has has subjected separators to fairly rigorous test and the separators came out as considerably more restrictive in high flow applications.
    I don't think there would be much different between...
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    Thanks for the info. One of the very first...

    Thanks for the info.

    One of the very first things I did on my DC2 was remove that inlet screen. Not long after I got it I measured the flow of air (and of course fine dust) and I was shocked at...
  44. Thread: 2hp DE Build

    by BobL
    Replies
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    1,659

    It may then be best to block some off to force...

    It may then be best to block some off to force flow to be mainly from the side opposite the location of the BMH.
  45. Thread: 2hp DE Build

    by BobL
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    1,659

    Probably but it’s worth a try. what will starve...

    Probably but it’s worth a try.
    what will starve the other flex is lack of air inlets in the cabinet.Narrow slots and small hole are still very restrictive. If this is all that is being relied on,...
  46. Thread: 2hp DE Build

    by BobL
    Replies
    88
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    1,659

    Make sure the 150 is the ID of the duct and not...

    Make sure the 150 is the ID of the duct and not the flared end.
    The width of the flared end should be at least 150+150/2 = 225 mm

    Anyway if it is a true 150 mm BMH that's much cheaper than I...
  47. Thread: 2hp DE Build

    by BobL
    Replies
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    1,659

    Well they are all 100 mm and the only one that...

    Well they are all 100 mm and the only one that seems to have close to the correct radius of curvature is the Adler speed but that won't sit flush with the inside of the cabinet.
    Given you have 6"...
  48. Thread: 2hp DE Build

    by BobL
    Replies
    88
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    1,659

    The blade shroud looks so constricted it will end...

    The blade shroud looks so constricted it will end up sucking very little anything because the air will find it much easier to go the other route. If that is the case you might consider removing the...
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    I don't think any LED tubes will work with the...

    I don't think any LED tubes will work with the electronic ballasts.
    LED tubes don't actually need a ballast to operate but for maximum efficiency, longevity and safety, there are special LED...
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    FWIW Bill Pentz doesn’t think much of any...

    FWIW Bill Pentz doesn’t think much of any separator..
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