[Stoots]

hot water,standard 2mm jets and 6mm microbore and my flow is fine on a controller setting of 45 in this cold weather.....

your just making your job harder using minibore hose....its a real drag(pun intended!)to drag around when using 100m......

adam just turn your flow up or get some sort of hot water system...you ll regret getting minibore hose for sure if your used to microbore.....

My flow is on full whack with 100m of 6mm and the flow is just ok but its not great.

I'm going to check my battery though because I've a feeling its on its way out it almost died on me yesterday.

[deeege]

hot water,standard 2mm jets and 6mm microbore and my flow is fine on a controller setting of 45 in this cold weather.....

your just making your job harder using minibore hose....its a real drag(pun intended!)to drag around when using 100m......

adam just turn your flow up or get some sort of hot water system...you ll regret getting minibore hose for sure if your used to microbore.....

What cold weather is that Daz? It’s been 8° and higher all week.

[Ian Sheppard]

When looking at flow - volume the hose ID will have an impact on these as already commented the hose wall itself does create a restriction as will the expansion rate of the hose. When air temps are cooler the hose will not expand as much or as quickly. A hot system will mean the hose wall is a little more supple and mean the pump does not have to work quite so hard to move the water as in Daz comments. This also allows the flow rate to be turned down with out effecting the anount of water delivered to the brush

Also a Hose has a maximum capacity of water it can carry with 8mm I have tested this is about 2.7lpm. Once this maximum capacity  is reached pushing the pump harder will not increase the LPM at the brush head, It just means the pump is working hard for no benefit drawing more current than it needs to and getting hot.

6mm will have a lower max capacity than 8mm. In technical terms we want a smooth flow of water through the hose with the least resistance, (Laminar) This is the water all moving in the same direction at the same rate. Bit like a nice free flowing motorway. Once the Hose capacity is exceeded the flow begins to move at different rates and directions within the hose (Turbulent) Now the all the three lanes of traffic is trying to get through using one lane and everything slows down and becomes start/stop rather than free flowing.

This blog gives more detail http://springltd.co/blog/84/flow-resistance-and-volume

[Stoots]

When looking at flow - volume the hose ID will have an impact on these as already commented the hose wall itself does create a restriction as will the expansion rate of the hose. When air temps are cooler the hose will not expand as much or as quickly. A hot system will mean the hose wall is a little more supple and mean the pump does not have to work quite so hard to move the water as in Daz comments. This also allows the flow rate to be turned down with out effecting the anount of water delivered to the brush

Also a Hose has a maximum capacity of water it can carry with 8mm I have tested this is about 2.7lpm. Once this maximum capacity  is reached pushing the pump harder will not increase the LPM at the brush head, It just means the pump is working hard for no benefit drawing more current than it needs to and getting hot.

6mm will have a lower max capacity than 8mm. In technical terms we want a smooth flow of water through the hose with the least resistance, (Laminar) This is the water all moving in the same direction at the same rate. Bit like a nice free flowing motorway. Once the Hose capacity is exceeded the flow begins to move at different rates and directions within the hose (Turbulent) Now the all the three lanes of traffic is trying to get through using one lane and everything slows down and becomes start/stop rather than free flowing.

This blog gives more detail http://springltd.co/blog/84/flow-resistance-and-volume

Thanks Ian. That's a good read all makes sense.

Slightly off topic but I have bought 2 v11 charging controllers and wanted to ask you if it's possible to wire both up to the same battery? The split charger orange wire I mean, I have wired the other wires to the one battery but not sure If I can use both controllers to charge the same battery? I dont want to damage them.

Thanks

[Ian Sheppard]

Hi Gomo
Yes they could both be connected to the sane vehicle battery. On engine start the controllers would see the volts at the alternator increase and the relays would close.
It may not increase the charge to the leisure battery though the alternator output is still only charging one leisure battery and the charging load would split across both the V11C so you would still get around 7 amps an hour going back into the battery.

[Stoots]

Hi Gomo
Yes they could both be connected to the sane vehicle battery. On engine start the controllers would see the volts at the alternator increase and the relays would close.
It may not increase the charge to the leisure battery though the alternator output is still only charging one leisure battery and the charging load would split across both the V11C so you would still get around 7 amps an hour going back into the battery.

OK so in effect I may as well just wire one controller to the battery and leave the other if there's no benefit to having both connected?