Homebrew PCBs

Stefan Trethan wrote:
> On Wed, 16 Mar 2005 09:13:17 +1100, Adam Seychell  
> <a_seychell@...> wrote:
> 
> 
>>For anyone wanting a HCl/CuCl resistant pump capable of > 1bar
>>and not expensive then I suggest looking into FloJet recreational
>>vehicle pumps.
> 
> 
> 
> What is a recreational vehicle? (that term seems silly to me, a bike is a  
> recreational vehicle too and sure needs no pump.)
> What are they used for most often?
> 
> 
> The problem with a pump is that i would need to move the boards, or  
> nozzles, which did you do?
> 
> If my maths is OK then i will get a bar at 6000RPM with the rotary machine.
> A few days ago i aimed the RPM meter at the proof of concept model and  
> measured 10000 RPM at a speed that wasn't frightening at all, i think even  
> more would be possible.
> Maybe tomorrow i can do further testing, the lexan and titanium shaft is  
> already ordered but i have still much to test before it can be put to use.
> 
> thanks
> ST
> 

I don't know, "recreational vehicle" is just the category they sell the 
pumps under. You right, its kind of a broad meaning. The one I was 
looking at a while back was this; Unfortunately I bought the Shurflo 
instead.

http://www.flojet.com/prodInfo/overview/81000-233_ds.pdf

I agree that there would be more complexity using nozzles/pump sprayer 
as either the nozzles or board must move. The concept I used was fix the 
PCB horizontal at the roof of a sealed tank, and have the spray nozzles 
direct upwards to the PCB. The nozzles are mounted to a pipe that has 
wheels at each end. The wheels run along two tracks mounted at each side 
of the tank. Drive mechanism consists of belts and a stepper motor 
mounted outside the tank. A pulley and shaft mechanically driving the 
tanks internal pulleys. If anyones interested I can take photos and put 
then to the photo section at Yahoo Homebrew_PCBs.



Adam