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Elkski

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Posts posted by Elkski

  1. I think the diving in Thailand pales compared to real diving sites.  Like Cuzumel, Bahamas .  Can I say Phuket and koh phi phi suck.  No fish, low viz, maybe not crowded now.   Fresh signs of fishing drag nets on phi phi side reefs.  Lots of net fragments  on chunks of reef they broke off and drug out into the sand.  I think Thailand diving prime  was 25 ,,years ago.  Go to similan ..  oh and the price is as high as anywhere.  Most dive masters  in Thailand don't know what sh*t they  dive because they have no worldly experience.    At least the Chinese cattle boats should be gone.   

  2. On 9/4/2020 at 8:28 AM, sometimewoodworker said:

    As I said behind the times.

    93AFF87F-D93F-413F-955A-5126F674E4A5.jpeg.7177741229a85d9c1398f34c0843c82c.jpeg

    here are the performance curves from my pump

     

    While invented in the late 17th century the technology has hardly remained the same, as shown above.

    The Scala2 is a booster pump.  It has a  high pressure setting like most pumps for a house.    It varies how  much pressure it adds a variable  amount to maintain a fixed "set" pressure.   

    I see lots of misinformation about pumps here.  

    Size of pump can mean many things.  But two main numbers are max head and flow rate, a third is max suction  head (how high can the inlet lift) .  I assume  you have positive inlet pressire via a tank.  Head is similar to Voltage. Higher voltage  = more flow or current.   Max head is how high can you  raise the hose until the flow stops.   Its a curve so if the pump only need to pump up 3 meters to the shower head you look  on the chart at 3 meters head and that is the max flow rate.   This doesn't take in account pipe size, length of pipe, and number of turns.   You need to add this pipe loss to showef head height above the pump. 

    Most pumps have a pressure switch that cuts the pump off  when it gets to a set or adjustable pressure.  In the case of the scala2 is doesnt even run if city pressure meets its min  setting.  But if city pressure drops below the "setpoint it turns on and tries to keep the pressure constant.   It is a variable pump so it won't be cycling on and off like most pumps.  Which  brings us to pump size.  A pump which has higher flowrate or max head will not send any higher pressure to the pipes in the wall than the set point.   Unless we are talking about something monstrously oversized that the pressure cutoff switch cant react fast enough for.   

    Looking at the 205q specs it is 38 lpm at  16 m head, and its switch seems fixed at  pressure settings of 2.8/2.1 kg/cm2.   OFF/ON

    The 155 is a lower pressure switch at 1.9/1.3 kg/cm2. And flow of 30 lpm at 12m head.  

    I think the 105 may be to  small.  How often does your 205 turn on and off when someone is showering?   What % of the max flow do you like?  Most shower heads are 1.8-2.5 gpm. Or 10 lpm max .   55 psi is enough to run  all my shower heads at the same time 42 lpm but the pupe run  is 3/4" PEX and only a 30' side run.  With maybe a 60' total from pressure regulator.  Many  shower valves like Grohe specify 55 psi.  I have 120 psi city p to work with.   

    There are charts or formulas to convert size of pipe runs into head.    It is sorta trial  and error when you don't have the exact pipe drawings to work with.   

    What is the  inlet source?  Inlet pressure makes a difference.  A storage tank with  fill switch is much better constant inlet supply pressure than straight on a city supply line. 

    Do ti have a pressure  guage to read when pump if off (max pressure) and then read it with shower or kitchen faicet wide open.   See what pressure it operates at currently  for a flow rate you like. 

    Measure how much water your using at your favorite setting.  You will need a pump with a curve that has a pressure flow rate you like.  What I'm saying if your  preferred shower flow valve  setting is wide open you won't like a smaller pump.   

    Try to draw a pipe size and length diagram to the shower then convert to head loss and see if the 155 will work. 

    Here is a pipe  head calculator. 

    https://pentairaes.com/pump-calculator

      

    • Thanks 1
  3. Is 480 kg per rai average.   I thought it was 700-1000kg.   What was last years rice price?    I'm trying to find out why gf mom needs money for fertilizer  if she has 10 rai in rice 80 km East of Ubon Ratchathani. Should be plenty of profit to support mom and a few others.   I am reading about the cover crop like mung beans or     CROTALARIA JUNCEA .  Don't you plow back in and not sell as a crop? 

    I'm thinking mom is to generous  as is my GF.  Houston we have a problem.  Yes my gf different but same same

  4.   I followed RB for a long time.  Not the last 5 months since I was banned on Twitter.   I knew when  RB was highlighting the bad air pollution he was on thin ice.   I think he has many  Thai followers and the Government better really consider if they want to banish him for no real reason.    His love for travel and Thailand are obvious.  I think he has a good balance  of positive and negative.   Maybe he has made a few mistakes but I would need to see the facts.  I hope he IS KICKED OUT for no real reason as he can then take off the gloves and his influence will gain 10x the power.   The educated masses are about to boil over and censorship in 2020 will backfire.  

     PS for the curious I was banned for some file comments deserved by Toni Lon

  5. Rough lesson in life. I'm sure Sleepless nights.  X a

     Why do you think it's yours?   Don't assume this. 

    If you do suspect its yours you may care if this  woman eats well for 9 months and no drugs or drinking.   A damaged child could make things much worse.  Of course insist on a DNA test before deciding your final actions.  I would think it would feel terrible to so a runner and never knowing.   Get cut as soon as your finished  with babies. 

  6. Just what Thailand needs,  people addicted to soda, more sugar.   Soon the big gulp , liter size will be common as well as even more obesity.  In the USA all self service refill stations are closed for the virus.  A employee will refill  for you. Maybe in a new glass im not sure.  And  self serve  ketchup pumps are gone. Makes one wonder how unsanitary theses types of things were.   

  7. Not sure what that fare is about on Korea air.   Delta SLC to ICN is 1300$ and until Aug 31 they offer free change for 1 year.   Maybe a good deal but I don't see how they can not extend this deal.  And all airlines must allow free changes.   I cam see this is a crazy idea.  US health dept has level 3 out of 4.  3 is reconsider travel.  4 is dont go.  

    "

    Peace-of-Mind Purchasing

    We are waiving change fees on Delta bookings through August 31, 2020. Valid for all destinations served by Delta, this waiver allows a change to your travel for one year from date of purchase. Fare differences will apply. See full terms for details."
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