[♫ the fool on the hill...... throwing Gliders]

5 hours ago, BigStar said:

Pattaya Hill?

Where is that ? I am from BKK

[♫ the fool on the hill...... throwing Gliders]

?

 

[♫ the fool on the hill...... throwing Gliders]

14 hours ago, still kicking said:

????????? 

Looking for a hill to throw a toy glider

[♫ the fool on the hill...... throwing Gliders]

Did some gliding (sailplane)  in Oz, loved it - had a weird idea to make a model one, but like nothing which exists now, and should get about 25% more distance...

 

In the midst of making it, carbon fibre, 3D printing etc.... 

 

BUT.... will need to test.  Looking for a grassy slope for testing  - void of people and trees ....  ie 1:10 ratio as glider I expect to be about 1:60 glide ratio.

 

does anyone know where to find such a slope  - within 2hrs drive from Bangkok ?

 

Thanks 

 

A bit of fun, night crash and burn but had fun doing it. Taught myself Fusion 360 from scratch, and learning to print delicate parts taken lots of trial and error. 

[Where to get 3D print filament around Bangna area ( Bangkok ? )]

Strangely we got the printer the next day... vendor on Suk road. bought filament subsequently from same shop expecting fast delivery - nope. 

 

Agree.... too much has to come from China these days ?

[Where to get 3D print filament around Bangna area ( Bangkok ? )]

Hi

 

bought an Elegoo Neptune 4 printer.....  came with a little bit if PLA+ filament. bought some from shopee, but taking forever to get here.

 

anyone know where to buy around Bangna ? itching to play with my new toy .

 

Thanks 

[TIG Welding and Stainless 1.5mm]

Going out on a limb here, but xx years back i remember at school welding with MIG and CO2.... or maybe it was just cheaper for students to use CO2

[TIG Welding and Stainless 1.5mm]

6 hours ago, azt219 said:

Are you looking for a welder or the equipment (TIG welding machine and stainless steel welding wires)?

 

For welders, it's quite difficult if you don't speak Thai.  

 

Cheers... lived here for 30 years, and read and speak Thai so no issue there. 

 

Yes... looking for someone better than my current guy to do some "precision" work welding 1.5mm stainless steel into little boxes 

[TIG Welding and Stainless 1.5mm]

Sounds like a very farang attitude - everything Thailand is bad.  Already have a guy who does 1mm stainless welding and i need precise stuff for a machine, just looking to see if can find better. 

[TIG Welding and Stainless 1.5mm]

Anyone know in Bangkok where i can find a good TIG welder and / or a company that can make 2 stainless steel boxes about 120 x 30 x 130 mm from 1.5mm sheet?

 

Thanks. Working on something which needs some precise work

[Any Company in BKK can pull LAN cable through a house]

Thanks !....  not a fan of mesh, prefer hard wired back haul.

 

Really appreciate both you inputs. 

[Any Company in BKK can pull LAN cable through a house]

Sick of <deleted>ty internet in the house, extenders are crap.

 

would like to pull LAN cables from router into the house to ie bedroom and other rooms we us alot and put an AP.

 

Anyone know of a reasonable company in BKK who can do it ? 

[Pipe Heat Loss Calculations]

Probably best I can find is this

 

https://calcdevice.com/forced-convection-of-inner-pipe-surface-id130.html

 

 

[Pipe Heat Loss Calculations]

4 hours ago, eisfeld said:

Wait until you realize that it also doesn't state the ambient temp and so none of the formulas anyone - including you - posted can be actually applied to get the heat loss in Watt. And what about your formula for convective heat loss? What fluid are we talking here? Oh and what's the flow rate? Hm yea, we don't seem to know, do we. Let me put it like this: You guy CANNOT use this NONEXISTING DATA to CALCULATE the answer and Complete the Homework Assignment. This conversation has boggled the mind indeed.

ok ...30 Deg C

[Pipe Heat Loss Calculations]

7 hours ago, GammaGlobulin said:

Sure, and so then you are suggesting that the user create a table based on temperature measurements for all possible ambient temperatures which may be encountered in the environment in question?

 

If so, there are tables which are already prepared available on the net, I guess.

 

But I thought that the question was "how to calculate"....

 

 

Thanks... seen that one too.....  but this does not cover 17" pipe, stainless steel, nor speed of air nor thickness of pipe 

[Pipe Heat Loss Calculations]

9 hours ago, eisfeld said:

No, setbkk's approach (if OP had the outlet temp) would work regardless of the ambient temp. It's very simple: Power Inlet = Power Outlet + Power Radiated. If you know the inlet temp + flowrate you have inlet power. Similar for the outlet power and so you can easily calculate the radiated power.

 

If you measure on a cold day instead of a hot day you will simply see a different outlet temp.

Thanks.... the question is not what's the exhaust temp of the air, rather how much heat loss would go through the pipe - realise they are both linked 

[Pipe Heat Loss Calculations]

10 hours ago, GammaGlobulin said:

 

 

 

You will find a very thorough discussion on this good site:  https://engineerexcel.com/heat-losses-from-pipes/

 

 

Thanks  - been on that web site and a gazillion others. the trick is the Hconv constant

 

Hot air, 170 Deg C and 8 m/s

[Pipe Heat Loss Calculations]

My head is spinning - anyone good at heat transfer calculations... ?

 

Home work is

 

tube / pipe 0.45m diameter, and length 1.5m, wall thickness 12mm

Hot air 170 Deg C blows through 8m/s

Stainless Steel

 

How many Watt ( What ) can transfer through the pipe 

 

[Anyone want a poodle mix?]

26 minutes ago, Denim said:

This dog looks like the youtube star. Just search on youtube :

 

' Funny dog talking about coronavirus '

Hahaha.... looks same ????

[Anyone want a poodle mix?]

21 hours ago, steven100 said:

yes OP ....  as Crossy mentioned ,  you need to add some pics and info on rough location ...     give folks a better idea.  

 

good luck.

 

 

Sandy

[Anyone want a poodle mix?]

We need to move country for several years, and hard to take dogs. looking for a good home for Sandy. About 10 months old, and pretty much toilet trained unless she get so excited to see you.

 

We paid 6k baht for her, but happy to give her to a loving home for free.

 

[Which Orphanage to Donate to in BKK - one in need ?]

Hi,

 

I used to go to Baan Khru Noi in Ratburana for many years, but I hear its closed down.

 

Anyone one know of others ? I once went to one which had nice glossy brochures, did not even enter the place as obviously they had enough cash already.

 

Thanks 

[Frogs Eggs - science project for kids]

Want to get some frogs eggs so my boys can watch them grow.

 

anyone know where to buy in bangkok ?

[Prayut To Be Held Accountable For His Deeds Over Last 9 Years: Pita]

Taking bets on who will never become PM. Offering odds 10:1 Pita will not become PM ( nah - I don’t take bets , but am sure he won’t be )

 

You can’t take on the military, Prayuth, monopolies like alcohol and CP and still become PM

 

Naive 

[Thaksin says he will return to Thailand in July, despite potential consequences]

16 hours ago, snoop1130 said:

 

He said that he wants to be able to care for his seven grandchildren, to relieve the burden on their parents, so they can focus

Him and Trump could be brothers. Of course the poor families  can relate to that crap cause that’s how they have to live 

 

Let me guess - am guessing that kids go to school with a driver, a few bodyguards and maybe one or two Nannie’s ?  
 

Poor old grandpa is going to be so much help