Tunze MaxiJet 600 Dedicated to BullDZR

OK, this may very well be a stoopid question, but how does this mod deal with the change in rotation direction when the powerhead starts and stops? Is the prop from the toy bi-directional?

This is one of the coolest mods I've seen. A big round of applause!
 
quoted from teh first post "To solve the problem of the prop turning the wrong way on start up I used one half of the colars that held the cage to the toy and stuck a small piece of stainless steel in one side, later to be glued to the top. As BullDZR stated in his DIY when the prop turns the wrong way it will suck itself up to the piece of SS and correct it's direction, then forcing the prop backward and clearing the piece of SS and blasting out water...
"
 
Thanks Guys... I am working on a new one too. I thought this thread had disappeared into obscurity. Glad it's still getting interest.
dvb
 
I don't mean to derail this thread, but just what is it about Tunzes and Seios that makes them so fundamentally different from a Maxijet, to justify the extra $ ? I just bought a couple of Seios for one of my systems, and at first look, except for the obvious differrence in the outlet nozzle, the only difference seems to be the impeller prop itself; conical. I just needed to get more waterflow to a system that's now SPS dominant, and didn't have the time to tinker. I know I bought a Rio trying to be a Tunze, but time is just not on my side right now. Never seen a Tunze close enough to compare to anything, but they are immense! Not that the seio is sleek. Any thoughts to using the Seio impeller prop on this mod? I know it would add cost initially, but I'm thinking down the road when the seio dies, and I have all that extra hardware:(
 
coralnut99 said:
just what is it about Tunzes and Seios that makes them so fundamentally different from a Maxijet, to justify the extra $ :(
Click to expand...
the benefit is that the tunzes and seios shoot out alot more water but at lower velocity, the maxijets shoot less water but at a higher velocity witch isn't as good for corals. the impellar is what makes the difference. the maxi's is flat and pushes water out to the side and forces the water through a small outlet. the seios and tunzes is more like a boat prop, it pushes the water forward over a much broader area. using the seio impellar in maxi would work if you could get the prop to stay on the maxi impellar.
 
I understand the difference in the prop design. The Seio is basically a cone with fins on the back side. Like I said, I don't have a clue what the Tunze prop / impeller looks like. I just can't believe the exponential difference in cost is due to the prop design and outlet nozzle. I guess what really has me scratching my head here is that Aquarium systems hasn't been able to combine a prop such as the seio with the reliability and durability of the Maxi's. I often wonder about how business decisions ar made...... or not made.
 
coralnut99 said:
Q. I don't have a clue what the Tunze prop / impeller looks like.

Q. What really has me scratching my head here is that Aquarium systems hasn't been able to combine a prop such as the seio with the reliability and durability of the Maxi's.
Click to expand...

A. pretty much like a boat prop...

A. Hence the DIY project I've posted here. not really that much to understand, Make it and you'll see, Or I'll do it for 40.00
dvb

I PROMISE this thing puts out a LOT of flow!
 
coralnut99 said:
I understand the difference in the prop design. The Seio is basically a cone with fins on the back side. Like I said, I don't have a clue what the Tunze prop / impeller looks like. I just can't believe the exponential difference in cost is due to the prop design and outlet nozzle. I guess what really has me scratching my head here is that Aquarium systems hasn't been able to combine a prop such as the seio with the reliability and durability of the Maxi's. I often wonder about how business decisions ar made...... or not made.
Click to expand...

I dont know what the impeller of a Tunze looks like. But I can tell you a few differences between SEIOs and Tunzes. Tunzes use less electricity. They are way more efficient than the SEIOs. Tunzes (not all but some) can be hooked up to a controller for wave action.

I've owned a couple of SEIOs. They are great for the price...a cheaper alternative but definitely not a Tunze :)

Back to the thread topic...Im digging these maxi-jet mods! I think I am going to have to buy one of those toys and pull out an old 1200 thats sitting in my toolbox :D Anybody try a ceramic shaft instead of SS? I think I have an old ceramic shaft from an OceanRunner pump in my basement. I just don't know if the sizes will match up.

billpa
 
How would you cut the ceramic shaft donn to size without cracking it in the wrong spot? I cut the SS 3 times before it was right.

This is a good Idea but, I'd break a few dozen before I got it right on... I think.
 
DvBrien can you post another pic of the blade stop on one of these? I can't make it out. This is a cool idea for making one of these and getting good flow. I see you still had to make the white top for the maxijet. How long does the superglue last in the water? Also does the stainless steel last in the saltwater?
Thanks, Booboo
 
booboo33062,

[welcome]

There are a few MaxiJet threads that show a lot of these details in this forum, and they are posted to daily. It would be on the first or second page of thread titles, and the first page of each thread contains the bulk of the information and images.

I've been reading them, but haven't tried to make one. Those that have are really impressed.
 
I see that but wanted to know how to do that on the toy version, the turbo twister . I could pick up one and put it together. I just didn't know how long the super glue will hold, or the stainless steel in the saltwater.
 
We use Super Glue Gel (GEL!) all the time to mount frags in our tanks, so it should be fine. If it does come apart due to stress and time, you should be able to reglue it again provided the surfaces aren't damaged.
 
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