[lee_dewing]

thanks guys.

I take it you tap out old jets with punch and new ones fit in ok?

thanks lee

[jonboywalton75]

Anyone know what size drill bit is needed to fit these?

[Londoner]

I think its 8mm. I have only ever used 1mm jets since the early days when they were recommended to me and I think they are great.

[jonboywalton75]

I think its 8mm. I have only ever used 1mm jets since the early days when they were recommended to me and I think they are great.

Cheers Vince

[Mike #1]

you need 8.5mm and 8mm if i remember correctly had to borrow mine of a mate each half of the jet is a different size hence you need 2 drill bits in order to recess the jets's into brush , and hammer to tap them in or bray them is as i did hope this helps

[tom2009]

i have fitted them on my main superlite brush which i use each day , i got them from cleantech they are not on their website but if you give them a ring they post them out within 2 days , the main benefit is reduced water usage as well as really good flow rate for rinsing on a very low setting i use a purefreedom trolley so the less containers i have to put in my car the better only used 6 containers today

just ordered 2 now from cleantech, if it brings down water usage its got to be a good thing

[jonboywalton75]

you need 8.5mm and 8mm if i remember correctly had to borrow mine of a mate each half of the jet is a different size hence you need 2 drill bits in order to recess the jets's into brush , and hammer to tap them in or bray them is as i did hope this helps

Thanks for the detail.

[michael papworth]

prowindow,

is that right the you use 4 jets(1mm) in your brush?

If it is 4 jets would, thought similar use to 2x2mm jets?

Not being sarcastic,  just very intrested to find out.

will have a go myself either 2 1mm jets as s.w.c
or 4x1 jets as yourself.

do you use a a supalite brush?/ is it easy enough to put jets in yourself?

thanks lee

I can see why you might think so, but you've missed an important point. (It's on the year 10 maths syllabus, so if you've got access to a maths-smart 15 year old, they can explain it to you, if you need it!)

The size of the opening in a jet is calculated by the formula:

A = πr²

where r  is the radius of the opening. So, the opening depends on the square of the size. (Yes, I know that the formula uses the radius and we are talking about the diameter. The formula for diameter is just too difficult to write in plain text.)

Now 1² = 1 x 1 = 1, and 2² = 2 x 2 = 4, so a 2 mm jet has 4 times the opening of a 1 mm jet.

The diagram below make it a little more obvious. You can see that a 2 mm hole is more than twice the area of 1 mm hole. It is, in fact, 4 times. As I said above.

Hope that helps.

The diagram at the bottom is a pattern that shows this in an easy-to-understand way. You have to see that the area coloured green is equal to the area coloured yellow.

(Oh ... I LOVE this stuff.              )

[Mike #1]

totally agree wally had gardiners jets fitted which are supposed to be 2mm jets in fact they measure 3mm when i checked them after removing

[s.w.c]

sounds like cleantech will be busy, i bet i get moaned at when i next phone up, they have always hated make in these for me, i bet there is some swearing going on there while make in them

[Dave Willis]

Gardiners used to do them a couple of years back might be worth calling them too.

[lee_dewing]

thanks wally that does make sense to me,  but don't ask me to explain it to someone else


I can't belive how little i learnt at school :