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This is to show what a before and after shot looks like when you mod the top of the DDC+ Alphacool plexi top.
http://www.dmp-racing.com/king/alpha_cool.jpg
Here it is with a 9.5mm opening. You could probably stop here if you were afraid to go any bigger.
http://www.dmp-racing.com/king/alpha...fter_9.5mm.jpg
Here it is in the final stage.
http://www.dmp-racing.com/king/alpha...ter_12.7mm.jpg
Yep you got it. I made mine bigger... the same size as the thread hole (where the plug is).
Ok, I'm going to grab another bit, it looks like the thing is offcenter, which is weird because I just drilled the hole bigger, wasnt like I started it. Did (does) yours look the same? Im going to try to get it evened out a bit more, unless it's just the side port coming in making it look that way...
If you look under the side port, it isn't central. It's probably the sideport that made the drill bit drift, however. Have you not got a drill press and clamp / vice ?
Yes it does look a bit off center on mine too :) I just used a hand drill.
what are you guy's using to drill this?
just a cordless drill?
also, what type of bit?
Yes I used a 14.4V cordless... I just used my regular metal drill bits... I used like 8 or 9, kept getting bigger and bigger. You would not want to START with a big drill bit, just do a little at a time and keep changing bits till it gets to the size you want.
ok, well i have a drill press that should do..
and what do you mean start with a big bit? like have it gradually get smaller?
No, opposite, you want a bit thats slightly larger than the hole, then go thicker.
Start with a small bit so that you don't crack the material and increase one size at a time until you reach the desired diameter for the hole.Quote:
Originally Posted by ReD.SkY
Wear glassses though! Plexi doesnt come off as nice thin slices, it comes off as hard chunks that are like melted together. hehe
I knew it was restrictive out of the box, but I've never seen it from that angle. Thats just, shamefull.Quote:
Originally Posted by Trice
cant you just grind it away wth a dremel or something?
Plexi is hard stuff, you could, but the precision of just having a bigger drill to take away some of the movement is beneficial. A dremel would be good to go in and clean it though if you needed to
now, whats the best way to stop the plexi from cracking?
You wont really have to worry, it will chip more than crack. Its hard stuff, but its also thick.
I mod that top, I used regular 1/2 drill bit without any problems, just slowly drilling it in. Also probably dremel would do. Modding alphacool top is easier than doing the mod on regular top.
ok, then it will go good when i get in tomorrow :woot:
Here you go, finished.
http://www.dmp-racing.com/king/alpha...ter_12.7mm.jpg
nice hopefully mine will look that good :P:
is there any way to make the outlet bigger?
yes, but no need.Quote:
Originally Posted by Pyr0
all iwaki pumps have way small outlets...
this is because the wider the outlet, the lower the head pressure.
kind of like a nozzle on a garden hose.
no nozzle=lots of flow, but not much pressure .... with nozzle=major pressure.
Reading one of the Stickies, Maxx states that flow is the most crucial element in a loop. Is that up for debate?Quote:
Originally Posted by ReD.SkY
I'm thinking you need pressure to overcome restriction?
Without head prussure, there would be no flow
most loops dont break 2gpm (iirc)
"just worry about pressure, and flow will follow" i cant remember who said that, but i had it in my sig for a little while.
a 1 horsepower pump with 100gpm flow but virtually njo head, wouldnt perform that well.
The restriction in a loop will kill all pumps that are designed with only flow in mind
(all of the above is over-dramatic as it is past my bedtime :p:)
Won't you lose the headpressure you gained by using small outlet anyway when the water comes into your 12mm tubing?
I guess what we really need is a number comparisson between the two setups.
I for one question the effect of the squared reduction between the two sizes. Simplest case would be to camfer or put some angle on that face.
But ideally it would be to machine a new top minus the design flaws.
I would go with nylon personally. I will get an estimate on a revision prototype from a local shop here, since I can make the cnc code for it, it might falls within reasonable rates and we can get a comparro of the two on the forums.
This is a real picture:
http://www.4eweb.de/pc/dualdeckel01.jpg
will that consider its in parallel or series? lol
gosh, i hope my DDC arrives today :)
It's serial.;)
I wonder if this cover eliminates the 2nd pump's noise when connecting them in serial.
As for the Alphacool's top mod. I must say that i still believe that it doesn't completely solve the "prob". Cause u're stil using a limited diameter outlet for the pump. So restriction is still there. In my opinion the best but more expensive way is Radiical's tops. My :2cents:
does serial increase flow and head?
Same flow, double head.
oh ok, so its identical to series
It's the same thing with different name... ;)
yeah this pump is tiny, I like it. I will have to redo everything next week though, I want to try out AS Ceramique this time around.