Fluctuating Motor speed

Discussion on general flowbench design
Tony
Posts: 1438
Joined: Wed Mar 03, 2010 3:40 pm
Location: Melbourne, Australia

Re: Fluctuating Motor speed

Post by Tony »

Yes indeed.

Power conditioners are available in any country, made to suit the local mains frequency and voltage, whatever that might be.
And there is a pretty wide range of voltages and frequencies around the world.

It will be expensive, and it will only make things slightly better. If you can get one for free, or buy something at an auction for peanuts fair enough.
If you are looking to buy something new, be prepared for a real shock.
Also known as the infamous "Warpspeed" on some other Forums.
damunk
Posts: 75
Joined: Sat Oct 03, 2015 1:38 pm

Re: Fluctuating Motor speed

Post by damunk »

Tony,

The welders need are not recommended to run in the UK residential sockets for long periods.
They can draw around 14amp which can blow the 13amp fuse in the plug.

From the seller of the welder in the UK:
"No this welder will not run on full power from a 13amp supply it would require 16amps. So it will not be able to run from a domestic 13 amp plug supply."

The UK sockets are rated at 13amps.

Powering 3 motors on one socket will be problem.
Tony
Posts: 1438
Joined: Wed Mar 03, 2010 3:40 pm
Location: Melbourne, Australia

Re: Fluctuating Motor speed

Post by Tony »

Quite obviously you cannot use a standard light duty domestic power outlet.

Here on Australia a standard domestic power point is only rated for ten amps. There are however alternatives rated at 15 and 20 amps for use with things like large airconditioners and domestic electric stoves and ovens. These have the same pin pattern as for ten amps, but much wider pins.

What I am saying is I just cannot believe that England is the only country in the entire world that does not have heavy duty industrial power outlets available for use in shops, engineering workshops, factories, and heavy industry.

If you are actually telling me that there is nothing in all of England that draws more than 13 Amps, than I will just have to believe you because I do not know..
Also known as the infamous "Warpspeed" on some other Forums.
damunk
Posts: 75
Joined: Sat Oct 03, 2015 1:38 pm

Re: Fluctuating Motor speed

Post by damunk »

I am just saying what I have in my home and this is where I intended to use my air flow bench.
RACEPUMPER
Posts: 447
Joined: Wed Aug 25, 2010 7:54 am
Location: Riverina Australia

Re: Fluctuating Motor speed

Post by RACEPUMPER »

damunk wrote:I am just saying what I have in my home and this is where I intended to use my air flow bench.
Looks like its time to change what you have at home

Jim
I really love making stuff but don't finish much
stef-1
Posts: 33
Joined: Wed Mar 03, 2010 11:31 am
Location: Suffolk, England

Re: Fluctuating Motor speed

Post by stef-1 »

I would advise you to run two motors per plug if your stuck with normal plug outlets. My bench uses four motors which is enough to pull 28" on most 4 cylinder heads. I run two on each plug well enough. If you want to run a single plug you will need to get an electrician to run a suitable cable from your consumer unit to a properly rated plug/socket.
damunk
Posts: 75
Joined: Sat Oct 03, 2015 1:38 pm

Re: Fluctuating Motor speed

Post by damunk »

Thanks but if I knew about this fluctuating voltage business I would not have bothered with the project. I'll keep it on the side and start again a few years down the line.

True @ Jim.
1960FL
Posts: 1338
Joined: Fri Jan 08, 2010 10:36 pm
Location: Maryland

Re: Fluctuating Motor speed

Post by 1960FL »

I know this solution is expensive and there are probably ways to make one of these but is use this on my RV when Glamping :-) and it works wonderfully I have measured input voltages as low as 212 VAC in a park to as high as 250 VAC and this thing will keep my RV voltage rock solid even when the AC and Microwave are both running at the same time.

Just a thought.

https://hughesautoformers.com/

Rick
Phil
Posts: 12
Joined: Sun Apr 22, 2012 4:31 am

Re: Fluctuating Motor speed

Post by Phil »

Where is your consumer unit (fuse board) in relation to where you want to put your flowbench ?
Ideally if your planning on using a lot amps you should put in a dedicated supply for your bench. Is this not possible due to location ?

Phil.
Tony
Posts: 1438
Joined: Wed Mar 03, 2010 3:40 pm
Location: Melbourne, Australia

Re: Fluctuating Motor speed

Post by Tony »

Maybe he is renting and cannot make any changes to what is already there.
Also known as the infamous "Warpspeed" on some other Forums.
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