[Moderator David@stives]

Andrew

The only calibration i know is the little blue dial inside, i thought that just increased the pressure and not the flow rate

Dave

[Andrew McCann]

DUHHH! 

You are right Dave.

Typed before engaging brain there   

Hmmmm something isn't quite right because I have a 100 PSI Shurflo,varistream and 100 mtrs microbore and easilly get 2 to 3 litres per min at max setting. I use the 3.8 ltr per min Shurflo so not much flow drop at all even with the hose fully extended.

Andrew

[Moderator David@stives]

Andrew

that is what i use the 3.8 litre a minute pump.

I last checked it with some faulty hose, i will measure it again later.

Are you definately sure you get 2-3 

Dave

[Alex Gardiner]

Hi David,

I have never checked the flow rate, but I find that I always seem to get enough flow rate.

 We also have 60 metre lengths of microbore in one of our vehicles and find that this usually gives us a higher flow rate if we ever need it.

I usually use my 100 metre length on a 60psi flojet and find this about right, I also use them on our trailer which has a 100psi flojet and this almost gives me too much water.

Alex

[Alex Gardiner]

Hi David,

I have just checked and the Flojet pumps have a higher flow rate;

The 60psi Flojet has a flow rate of 5.5 lpm

The 100psi Flojet has a flow rate of 7.6 lpm (We happily run 2x 100metres off of a single 100psi pump)

I suspect that this is the main reason that you struggle with Shurflo and microbore. I think that in this case the psi of the pressure switch has very little significance to your usage and would only really come into the equation when using very tall poles (hence the need for greater pressure), whereas the specific flow rate has an impact all the time.

I have great respect for shurflo (good backpacks!) and also for the varistream, but have found that a simple Flojet/microbore/flow valve set up just works and works (as do hundreds of others).

Hope that this has been informative

Alex

We happily run 2x 100metres off of a single 100psi pump

[Moderator David@stives]

I have just tested my hoses.

1 is 2 Litres a minute
2 is 1.75 litres a minute (slightly faulty hose)

Both are 100 metres of microbore ,and both tested on the same pump and system.

I converted this from pints

1  is 4.25 pints a min
2  is 3.75 pints a min.

I will do a better test over a 5 minute period.

Alex the reason i want a faster flow rate is for the salty, sun baked windows, like the other day, I had a few problems and was a nightmare rinsing especially on beading windows.

Dave

[Moderator David@stives]

I will investigate further.

Alex that is what the pump can deliver unrestricted is there any chance you can measure the flow rate through 100metres of microbore

Dave

[Andrew McCann]

Andrew

that is what i use the 3.8 litre a minute pump.

I last checked it with some faulty hose, i will measure it again later.

Are you definately sure you get 2-3 

Dave

Like Alex we always seem to have more than enough flow if needed. We normally use around the 1.5 ltr per nmin mark.  At this the varistream is set at just under half.

Actually Dave.. thinking about it again you CAN increase your flow rate settings via the blue dial. Yes it does set your pressure cut-out setting but if you turn it up it will increase that and also you max flow. After all it is a FLOW RATE device.

I would give that a go if I were you. Only turn it up one increment at a time though until you have it where you want it. No need to screw the lid back on to try it. Just run your hose out and stick your pole on the end and set it to what you need.

Andrew

[Moderator David@stives]

Andrew i have tried that and it does not seem to make much difference.

I think i will downgrade to a 60psi with a higher flow rate.

For me 2 litres a minute is ideal for most winows ,but i feel i could do with twice that for beading windows it will knock the spots of faster.

The trouble with beading windows is that the dirt travels down the window until it finds the next available bead and so forth and so on, On salty windows in direct sunlight this can be a real problem as i found out a couple of days ago.

The way i usually deal with beading is to wash the window in the usual way and to rinse i start at the bottom and move the brush up the window rapidly then as i get to the top i quickly pull away this way you create a temporary sheet which pulls the beads down with it. Then i go back to the top for a final rinse.

Dave

[macc]

Thanks Andrew.

The way i usually deal with beading is to wash the window in the usual way and to rinse i start at the bottom and move the brush up the window rapidly then as i get to the top i quickly pull away this way you create a temporary sheet which pulls the beads down with it. Then i go back to the top for a final rinse.

Dave

Thats a wicked idea, going to try it. 

macc

[Andrew McCann]

Errr thanks very much Macc.

It's actually Dave's idea though   

Wrth a try though

Andrew

[macc]

Errr thanks very much Macc.

It's actually Dave's idea though

Wrth a try though

Andrew

Thanks Dave, sorry, was up at 4.30 this morning to take my daughter to a car boot sale, not my choice, brain not working well.  :

macc

[Alex Gardiner]

David,

I will have a go at measuring the actual flow rates later on.

Alex

[Alex Gardiner]

David,

I have just measured the actual flow rates through a reel of 100 metres of microbore and then through 11 metres of pole hose exiting through 2x 2mm jets (standard jet size) and the actual flow rates are as follows:

60psi flojet = 2.1 lpm
100psi flojet = 2.65 lpm

Hope that this helps

Alex

[Moderator David@stives]

Thanks Alex

It is not far off what i am getting, I think i will set up a smaller 60 metre hose for situations where i need a bigger flow rate.

It seems that microbore really zaps the flow rate on all pumps.

No wonder my car has a 1500 psi brake pump t
o push the fluid around the brake lines, abs and traction control system ,it must be a nightmare creating that much back pressure down them break lines fast enough.

The flow rate on that must be 1 inch in micro seconds

Dave

[macc]

Hi, im confused, you are getting hi teck for me. ive shurflo 100psi, Variestream & 6mm microbore. Is that a good combination or not? 

Macc

Simple answer Macc.


YES... VERY GOOD 

Andrew

Thanks for this post i ment Andrew,  , i just worked it out.

Thanks Andrew.

The way i usually deal with beading is to wash the window in the usual way and to rinse i start at the bottom and move the brush up the window rapidly then as i get to the top i quickly pull away this way you create a temporary sheet which pulls the beads down with it. Then i go back to the top for a final rinse.

Dave

Thats a wicked idea, going to try it.

macc

sorry Dave, dudnt make it clear.

macc

[drew86]

Hi all thanks for all your advice, made a great thread i thought, anyway just ordered my system with shurflo varistream from Andrew McCann, great bloke lots of usefull advise and a good price, cant wait to get going now having just been made redundant from my 18 year job, anyway thanks again for all your help, sure i will be asking for your advice again in the not to distant future, time i got canvasing

[Jeff Brimble]

David do you know the Internal Diameter of your micro bopre hose please ?