The "Hitchhiker's Guide" to the Maxi-Stream mod - Page 2

dhnguyen · 11/27/2005, 10:49 AM

No the double prop design is only for the MJ900 I used (possibly MJ600 might also work). The MJ400 will not be strong enough to spin both props.

D.

Jack04 · 11/27/2005, 11:13 AM

So is this mod supposed to break the surface of the water or is it to give the pump a lot more power?

Jack04 · 11/27/2005, 11:17 AM

by the way you did an amazing job at taking pictures step by step making it easy to follow, I just am unclear of the purpose because you had a picture above which showed Surface aggitation (sp?)

dhnguyen · 11/27/2005, 11:23 AM

this mod is to increase the flow on the Maxijet powerhead while making it very wide and dispursed. Kinda like a poorman's Tunze. Infact the Tunze pumps use the same exact principle of using propellers to generate flow instead of the flat bladed imepllers.

dhnguyen · 11/27/2005, 11:26 AM

And for effect, I'm referring to BullDZR's videos of this mod in action.

http://www.gborocollege.edu/~wdozier...maxijetmod.avi

http://www.gborocollege.edu/~wdozier...axijetmod2.avi

You be the judge.

Jack04 · 11/27/2005, 11:26 AM

i see, and is the propeller drawing the water in through the side of the power head, or is it drawing the water in through the open end?

thanks for the quick reply

Urabggr · 11/27/2005, 11:31 AM

Is there any reason that mj1200's aren't used? Or is it just because you didn't have one. I ask because I plan on doing this mod on my 1200 but haven't really seen many people using the 1200. Is it too strong? Thanks!

dhnguyen · 11/27/2005, 11:31 AM

the propeller draws in water from the inlet holes or slots then pushes it (the water) out the open end.

dhnguyen · 11/27/2005, 11:32 AM

I find the MJ900 far more efficient (power consumption wise) and quieter than the MJ1200. But there's no reason why you can't use a MJ1200 instead.

dhnguyen · 11/27/2005, 11:43 AM

Keep in mind that this is my own rendition/continuation from the below threads

http://www.reefcentral.com/forums/sh...hreadid=253928 (the original thread)

http://reefcentral.com/forums/showth...hreadid=611354 (BullDZR's thread)

If you get a chance, you should read through these for more background and info. as to why things are done as described here.

This new thread is basically a summary of what I have collected from the above and my own design features that worked well for me.

GSerg2 · 11/27/2005, 02:32 PM

Wow! Thanks for all the effort you put into the pics and descriptions. It looks like you have about perfected it. I am going to build one of this as soon as I can get the props and rods.

If they work out, I will be replacing my Tunze with two of these.

Have you tried running these on a wavemaker?

Thanks

melev · 11/27/2005, 02:50 PM

Very helpful thread.

Lordhelmet · 11/27/2005, 11:42 PM

thabk you for postin this, it has answered a few questions that had regarding this mod.

dhnguyen · 11/28/2005, 12:29 AM

Now only if I can hunt down some dark grey coloured 1.5" PVC pipes

Do they make Krylon Fusion in dark grey (flat or satin finish)?

melev · 11/28/2005, 12:33 AM

Talk to Paul from Ocean's Motions as he uses and buys gray PVC all the time. Maybe he can point you the right way.

I think savko sells black, but it won't be cheap.

Reefvet · 11/28/2005, 01:22 AM

Quote:

Originally posted by melev
Talk to Paul from Ocean's Motions as he uses and buys gray PVC all the time. Maybe he can point you the right way.

Since OM is in Canada I'm not sure you want to pursue their supplier.

Grey PVC is schedule 80 and typically used for irrigation systems amongst other things. You can find it at most Home Depot stores if you look in the right isle.

hawnsky · 11/28/2005, 01:29 AM

HD and Lowes also sell a ABS pipe in shorter lengths that is almost a perfect match to the MJ's color....comes in a 2' length...at my HD it was located in the same isle as the spaflex

dhnguyen · 11/28/2005, 02:00 AM

Actually... It looks like they do make SCH40 PVC pipes in gray

http://www.usplastic.com/catalog/pro...uct%5Fid=16587

These prices don't look TOO bad @ $1.57/ft.

pasenah · 11/28/2005, 02:46 AM

if the power goes out is there a risk they will suck instead of blow when the power returns .i was thinking of having one each end on alternating times ,about 5 mins each way.

thanks
ben

dhnguyen · 11/28/2005, 09:37 AM

Ben,

That's what the stopper is for (re: image from first page of this thread). If the propeller spins the wrong way, it will pull out the whole impeller slightly, the propeller will hit the stopper and stop spinning then reverse itself accordingly as the magnet sucks itself back into the pump housing. This all happens very quickly within a couple of seconds upon restart though.

D.

11/27/2005, 02:32 PM	#31
GSerg2 Registered Member Join Date: Aug 2001 Location: Owasso, Oklahoma Posts: 1,037	Wow! Thanks for all the effort you put into the pics and descriptions. It looks like you have about perfected it. I am going to build one of this as soon as I can get the props and rods. If they work out, I will be replacing my Tunze with two of these. Have you tried running these on a wavemaker? Thanks __________________ - Greg Current Tank Info: 215g RR, 30g sump, 10g refugium, 750w 14K Hamilton MH + 500w URI VHO

11/27/2005, 11:42 PM	#33
Lordhelmet Registered Member Join Date: Nov 2004 Location: San Jose, CA Posts: 2,008	thabk you for postin this, it has answered a few questions that had regarding this mod. __________________ I need a new signiture Current Tank Info: 90 gallon, 14 gallon

11/27/2005, 10:49 AM	#21
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	No the double prop design is only for the MJ900 I used (possibly MJ600 might also work). The MJ400 will not be strong enough to spin both props. D.

11/27/2005, 11:13 AM	#22
Jack04 Registered Member Join Date: Aug 2003 Location: Dayton, Ohio Posts: 420	So is this mod supposed to break the surface of the water or is it to give the pump a lot more power?

11/27/2005, 11:17 AM	#23
Jack04 Registered Member Join Date: Aug 2003 Location: Dayton, Ohio Posts: 420	by the way you did an amazing job at taking pictures step by step making it easy to follow, I just am unclear of the purpose because you had a picture above which showed Surface aggitation (sp?)

11/27/2005, 11:23 AM	#24
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	this mod is to increase the flow on the Maxijet powerhead while making it very wide and dispursed. Kinda like a poorman's Tunze. Infact the Tunze pumps use the same exact principle of using propellers to generate flow instead of the flat bladed imepllers.

11/27/2005, 11:26 AM	#25
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	And for effect, I'm referring to BullDZR's videos of this mod in action. http://www.gborocollege.edu/~wdozier...maxijetmod.avi http://www.gborocollege.edu/~wdozier...axijetmod2.avi You be the judge.

11/27/2005, 11:31 AM	#27
Urabggr Registered Member Join Date: Jan 2005 Location: Redwood City, CA Posts: 381	Is there any reason that mj1200's aren't used? Or is it just because you didn't have one. I ask because I plan on doing this mod on my 1200 but haven't really seen many people using the 1200. Is it too strong? Thanks!

11/27/2005, 11:32 AM	#29
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	I find the MJ900 far more efficient (power consumption wise) and quieter than the MJ1200. But there's no reason why you can't use a MJ1200 instead.

11/27/2005, 11:43 AM	#30
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	Keep in mind that this is my own rendition/continuation from the below threads http://www.reefcentral.com/forums/sh...hreadid=253928 (the original thread) http://reefcentral.com/forums/showth...hreadid=611354 (BullDZR's thread) If you get a chance, you should read through these for more background and info. as to why things are done as described here. This new thread is basically a summary of what I have collected from the above and my own design features that worked well for me.

11/27/2005, 02:50 PM	#32
melev Moved On Join Date: Sep 2002 Location: Ft Worth, Tx Posts: 43,217	Very helpful thread.

11/28/2005, 12:29 AM	#34
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	Now only if I can hunt down some dark grey coloured 1.5" PVC pipes Do they make Krylon Fusion in dark grey (flat or satin finish)?

11/28/2005, 12:33 AM	#35
melev Moved On Join Date: Sep 2002 Location: Ft Worth, Tx Posts: 43,217	Talk to Paul from Ocean's Motions as he uses and buys gray PVC all the time. Maybe he can point you the right way. I think savko sells black, but it won't be cheap.

11/28/2005, 01:29 AM	#37
hawnsky Registered Member Join Date: Oct 2005 Location: northern california and hawaii Posts: 14	HD and Lowes also sell a ABS pipe in shorter lengths that is almost a perfect match to the MJ's color....comes in a 2' length...at my HD it was located in the same isle as the spaflex

11/28/2005, 02:00 AM	#38
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	Actually... It looks like they do make SCH40 PVC pipes in gray http://www.usplastic.com/catalog/pro...uct%5Fid=16587 These prices don't look TOO bad @ $1.57/ft.

11/28/2005, 02:46 AM	#39
pasenah Registered Member Join Date: Apr 2004 Location: cornwall, england Posts: 444	if the power goes out is there a risk they will suck instead of blow when the power returns .i was thinking of having one each end on alternating times ,about 5 mins each way. thanks ben

11/28/2005, 09:37 AM	#40
dhnguyen Moved On Join Date: May 2004 Location: Kingston, WA Posts: 4,751	Ben, That's what the stopper is for (re: image from first page of this thread). If the propeller spins the wrong way, it will pull out the whole impeller slightly, the propeller will hit the stopper and stop spinning then reverse itself accordingly as the magnet sucks itself back into the pump housing. This all happens very quickly within a couple of seconds upon restart though. D.