SEIO Rat - a.k.a S-RAT

[ReefVan]

Started the S-Rat last night using a SEIO M1500 as the powerplant... should be the rough equivalent of a Tunze 6060...

That's until I get a SEIO M2600... then it's Tunze 6100 watch out...

Man... do TAAM ever put a lot of adapters in those boxes... good thing though since I'm using a couple for the Rat drive unit mounting to the tank rim.... loll ... They're really quite good and it'll give the whole unit a real polished look... :thumbsup:

The bracket adapter that I'll bolt to the Rat drive unit will be fully adjustable for both tank rim width and the Rat drive unit horizontal position...

This way the one mounting bracket on the Rat drive unit will serve two functions... clamping and horizontal position... :thumbsup:

As for the rest of the unit, I'm using a set of Tunze 6080.05 mounting magnets for now on the hinge / pump support assembly...

When my rare earth magnets from E-bay arrive I'll be DIYing a set of Water-proof mounting magnet assemblies for the S-RAT...

Pics to follow when I get a chance... right now I'm having a creative head rush on how to develop this... should be finished by week's end... :thumbsup:

 

[Purple Haze]

are you just stripping a reef rat and using the drive for these projects?

 

[ReefVan]

It's basically the same layout as a Reef Rat except the drive geometry is modified to suit my needs... i.e travel / stroke in degrees between 0Ã"šÃ‚° and 90Ã"šÃ‚°....

Versatile little beast isn't it now...

Reef Rat
Super Rat
Tunze Rat
SEIO Rat

.... and the Energizer bunny keeps going and going..... :thumbsup:

 

[ReefSalt]

Well its going to be nice to see some pics of the SEIO Rat in action

Looking forward to it Van....and yes they do put a lot of adapters in that lIittle SEIO Box.

 

[ccoral]

very instrested in seeing images can not wait.

 

[minus_13]

I have no idea what you are talking about...

 

[ReefVan]

Master..... it's alive!!!!

The Rat Werks triumphs once again... wow, 2 Rat evolutions in 2 weeks.... first Tunze Rat... now SEIO Rat.... time for a break...

SEIO Rat has come to life after a week of burning the midnight oil.... :thumbsup:

A few fine tuning adjustments tomorrow and then in the water over the weekend next to Tunze Rat at the LFS for a few weeks of proof-testing...

So that's the 3rd evolution of Rat since Xmas... Super-Rat, Tunze Rat and now SEIO Rat...

Full View of SEIO Rat mated with SEIO 1500 on bench in fully assembled state...

Mounting Bracket using SEIO supplied parts with heavy Rat Werks mods...

View looking down on SEIO M1500 assembled to Rat and powercord clamping scheme...

:thumbsup:

 

[ReefVan]

Mounted SEIO Rat from outside with Tunze Magnets...

Mounted SEIO Rat from inside with Tunze Magnets...

Full travel left....

Full travel right....

:thumbsup:

 

[Rickster88888]

Great work man!

One question... Y do u need tunze magnet? Can't u secure the RAT on the edge of the tank and secure the seio on the shaft?

Cheers

 

[thrlride]

Where do you get the 'rat' part?

 

[dattack]

Is the shaft of the RAT long enough to put the Tunze/Seio lower into the water. Seems to me , you might experience some splashing at the surface?

 

[grim]

You can't really rotate it on a shaft without the bottom pivot point, these pumps actually have a bit of kick, so they'll deflect most any length of rod until the pump hits the back of the tank, at that point, when you rotate, the pump will bang and skip around on the tank itself, not exactly elegant. If it doesn't deflect the rod, it'll deflect the mounting points of the rotator. I played around with no bottom pivot for a while, and the only way I got it to work halfway decent was with a teflon bushing on the bottom of the shaft, lower than the pump, that kept the shaft spacing equal at both the top and bottom (think donut at the bottom). The problem with that was at the furthest points in the travel (+90', -90', there was still enough deflection to slide bushing about 1/2 in the opposite direction, it would definately work fine with a shorter swing.

jb

 

[ReefVan]

Magnets are essential to the success of this project.. as Grim says, without them the pump will jump all over the place...

The Rat part and hinge assembly is my part....

Exhaust centerline is at 4.5 " from the surface so it'll be just fine... my Tunze Rat is at the same height and the 6080 on it is stronger than the SEIO 1500... 2245 gph vs 1500 gph...

If your keeping coral I wouldn't really recommend it too deep...

Basically with an oscillating SEIO or Tunze pump you can cut the amount of pumps needed in half due to the multi-directional flow approach and the fact you don't need a controller to constantly turn alternating pumps on and off...

The water test this weekend will put any doubts aside... worst case scenario I'll add a shield on the top of the intake like Tunze has molded into their units...

 

[coralnut99]

I'm with thrlride...............the "rat" part looks like a seaswirl?

 

[Rivenjim]

i wish they still made those osci waves basically the same thing shown here but still cool:thumbsup:

 

[ReefVan]

Well guys keep on dreamin'.... Swirls and Osci-Waves won't drive your Tunzes or your SEIOs...

 

[northbay-reefer]

Refvan ... where did you get the RAT ???

 

[ReefVan]

Truth be told.... I am inventor and builder.... these models that drive the Tunze and SEIO pumps are essentially Super-Rat drives and have a 1/2" drive-shaft....

The shaft is protected from salt creep by a silicone-lubed O-ring in the drive block.... drive uses a 60:1 teflon coated gear drive motor and a custom flywheel linkage bellcrank drive array...

So far so good.. K.I.S.S has made these very reliable and maintenance-free...

 

[ReefSalt]

Now that looks neat !
You used the bundled attachments they give to create a bracket Smart Move Van.

 

[ReefVan]

Robin, not only the mounting bracket for the Rat drive... but the hinge half that swivels the SEIO is a modified part of the bundled attachments as well...

I used as many of the bundled attachments as I could in order to cut down on part fabrication, although many were heavily modified it was still less time-consuming then fabricating from scratch...

The only down-side I can see is getting these SEIO parts in quantity in order to kit the SEIO Rats...