The "Hitchhiker's Guide" to the Maxi-Stream mod - Page 5

hahnmeister · #**101** 11/22/2006, 02:17 PM

I barely fit a bunch over airline tubing. BARELY. Its almost like the airline shaft is what is holding the prop blades together... but once its superglued, it is strong.

dhnguyen · #**102** 11/22/2006, 02:58 PM

the Dumas 3002 will hold just fine if you drilled out the shaft hole to 3/32". I've been doing that for a couple years now, in fact my very first MJ mod was done with this prop.

D.

twon8 · #**103** 11/22/2006, 06:30 PM

Quote:

Originally posted by JMBoehling
Twon,

Think (02) 3004's in my 90 will be too much flow? I am replacing my Seio1500's.. Just ordered my (02) 1200 MAXI'S...

as long as you have somewhere to point them, you should be fine, just be prepared for a dramatic upswing in flow.

maxvan1 · #**104** 11/22/2006, 06:39 PM

Quote:

Originally posted by dhnguyen
depending what you keep in that 90g, 2 MJ1200 high flo kits most likely would be too much IMO.

D.

Wow... I was thinking of putting two of those in a 29G. Maybe not?

dhnguyen · #**105** 11/22/2006, 07:51 PM

I wouldn't if I were you. For a 29g tank, your best bet is ONE MJ600 or MJ400 modded with the smaller Dumas 3002 propeller.

twon8 · #**106** 11/22/2006, 08:36 PM

Quote:

Originally posted by maxvan1
Wow... I was thinking of putting two of those in a 29G. Maybe not?

yeah, two in a 29 would be near 250x turnover, a bit much even for rich

now if you are going all acros, maybe put them on alternate cycle on a wavemaker or that chanel timer people use for a wavemaker.

slug · #**107** 11/24/2006, 06:50 PM

I threw one of these together, an mj900 newer version, and not sure if it's right. This thing tries to spin backwards about every couple minutes and chatters away for a couple seconds before spinning the right way. I thought it would only try to spin the wrong way sometimes at start up?

twon8 · #**108** 11/24/2006, 08:03 PM

if it doesn't have enough power to spin the prop it can lag and then spin backward. try the impellor in a 1200 and it should work.

slug · #**109** 11/24/2006, 09:10 PM

Ok, using an octura 1435, thought that one was a good match for a mj900?

twon8 · #**110** 11/24/2006, 09:42 PM

if built correctly the 900 can spin a 1435, but if things are a bit off balance or maybe the prop is too far forward it may have trouble. a pic would help see any problems

ThaNgBOm321 · #**111** 11/24/2006, 09:52 PM

the 900 can spin a 1435 prop. i have 2 900 running with 1435 props no problem.
just out of curiosity, how quiet are you guy's moded maxies?? mine is bearly humming.

RichConley · #**112** 11/25/2006, 02:43 AM

Quote:

Originally posted by twon8
yeah, two in a 29 would be near 250x turnover, a bit much even for rich

now if you are going all acros, maybe put them on alternate cycle on a wavemaker or that chanel timer people use for a wavemaker.

With 2 3004s in a 29, you wont be able to keep the water in the tank.

I almost can't with 2 of them in my 58.

jvschlegel · #**113** 11/25/2006, 08:12 AM

Just finished up with my mod. I used the dumas 3002 prop and purchased 6 of them. I have a 120 gallon tank and think I need the 3004 prop. Anybody in the Bel Air, MD area have a spare 3004 they would like to trade for a 3002 prop?

I do have to say, I am very impressed with the water flow this thing kicks off. Now I am looking at the 3 blade racing boat props. With my boat, I am able to turn a larger diameter 4/5 blade with less pitch to get me my bottom end and still keep my top end. This will allow the smaller MJ's to perform like the MJ1200 and 900 without the concern of not being able to spin it.

Just a thought for those MJ tuners out there.

jvschlegel · #**114** 11/25/2006, 10:58 AM

I would also like to point out I have now done this mod to every type of powerhead I have laying in my house. Shifting through my box of fish junk, I found 2 powerheads and have successfully performed this mod. Both work the same as the maxi jet in performance. It took a bit of designing, but worked out great. I can send pics if someone can host and post them.

Jon

TXKev · #**115** 11/25/2006, 07:32 PM

I just put my MJMod maxi in the tank Wednesday and it keeps trying to reverse itself when it is going. It seems like every 5 minutes it reverses. The sound from it hitting the stopper every few minutes is driving me nuts. Is this normal? How can I get it to stop?

Thanks,
Kevin

TXKev · #**116** 11/25/2006, 08:27 PM

Quote:

Originally posted by TXKev
I just put my MJMod maxi in the tank Wednesday and it keeps trying to reverse itself when it is going. It seems like every 5 minutes it reverses. The sound from it hitting the stopper every few minutes is driving me nuts. Is this normal? How can I get it to stop?

Thanks,
Kevin

I think I figured it out. I forgot to use the thrust washer. After I put that on, it seems to be running fine.

Thanks,
Kevin

Bill Z · #**117** 11/29/2006, 02:50 PM

I'm trying to mod an 802
all it wants to do is go back and forth. even out of the water it wont spin just vibrate back and forth.
any ideas.

dhnguyen · #**118** 11/29/2006, 03:11 PM

Pics will help

Malifluous · #**119** 11/29/2006, 04:48 PM

Ive had 2 mods in my tank on a wave timer for about 3 months. I just recently added some fish. Im worried that my mandarin will get chopped to bits. I have a shroud but the area around the center brace could definitely allow a fish acces to the prop.
Has anyone chopped up their fish wih the Mj mod?

dhnguyen · #**120** 11/29/2006, 05:11 PM

Nope. No fish was harmed in the making of this...... Yadda yadda yadda...

Anyways... I have a mandarin that once got sucked and stuck into a POS Powersweep. Ever since the MJ mod (2+ years running) he has not had another incident. As with any propeller pump on timer though (even the Tunze), I could see a fish possibly get hurt by swimming into the shroud when the pump is off and is caught inside when it turns back on.

Malifluous · #**121** 11/29/2006, 06:26 PM

Yes thats my primary worry, that the fish will swim in there when it is off. I could put a guard on it but then there goes my flow.

dhnguyen · #**122** 11/29/2006, 06:46 PM

Hey has anyone seen this?

http://www.hydor.it/inglese/koralia.htm

Looks like finally other manufacturers are getting their heads out of their A**** and start producing propeller pumps. Hopefully this will help lower the ridiculous prices of the Tunze.

ostrow · #**123** 11/29/2006, 07:03 PM

I haven't been impressed with some hydor products in the past. At IMAC a couple years ago I won an auto feeder. It was a piece of junk, never worked at all. Very cheap construction.

Another company one could use those adjectives for is supposed to have some mammoth 30K GPH coming out soon... Polario by Rio/Tamm.

dhnguyen · #**124** 11/29/2006, 07:08 PM

Maybe so but as more vendors jump on the propeller pump market, this can only be a good thing for us consumers. More competition means lower prices

--- The whole reason I did my MJ mods to begin with.

And although I will agree with you that Hydor products by and large do look rather cheaply built, I am much less inclined to trust anything coming from Taam from experience. Still... The more the merrier IMO.

Bill Z · #**125** 11/29/2006, 08:04 PM

Quote:

Originally posted by Bill Z
I'm trying to mod an 802
all it wants to do is go back and forth. even out of the water it wont spin just vibrate back and forth.
any ideas.

I give up. maybe my pump is too old.
if it wont spin out of the water it never will in the water.