Best place for water pick up on a hydro

[monojeff]

I have a small hydro I'm just about finished with.
I need to know best place to put a water pickup as my rudder doesn't have a built in one.
Not sure if a prop wash type would be suitable or putting it on the rear of one of the sponsons??

Any help appreciated!

[Fluid]

Either one works, although the prop wash is usually easier to do with simpler plumbing. Put the pick up in the 12 to 3 o'clock quadrant or the prop wash, closer to 1:00.



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[Jesse J]

Also prop wash one will have the most constant water flow. I have had them also under the sponson with equal success. I am setting mine up with propwash for the more continuous flow.

[monojeff]

What is the best way to make one for a small hydro bend some tubing and have it come out the back of the transom over the prop as fluid mentioned?

[monojeff]

Never mind I just googled prop wash pickups and found a suitable photo of one I can make.

Also noticed one on here
http://www.offshoreelectrics.com/info-pages/add-water-pickup.php

[monojeff]

Will this work?
http://i10.photobucket.com/albums/a121/bizkit21/c7ced9fe.jpg
http://i10.photobucket.com/albums/a121/bizkit21/9ed78382.jpg

Or should the tapered edge be on the other side?

[Fluid]

That won't pick up much water, face the tube 180 degrees around. This would work better although I'd put it further back and on the other side of the mount:

http://i52.tinypic.com/2q9jv9i.jpg

[monojeff]

That's what I thought I flip it and switch it to the other side.
Thanks

[monojeff]

It's about as far back as the pic you posted??

[monojeff]

Well my pickup didn't work to well motor came back way hotter then I would have liked, I could barely touch it.
I guess I need to move the pickup back more how much further would you suggest??

Gotta keep temps down I am running a 4000kv motor on 3s in this little hydro.
It ran great just don't want to smoke anything!!

[sundog]

That pickup won't do - it is made to go on the transom of a submerged drive boat. The slanted part faces the front of the boat, but the pickup is molded such that you can't turn it without turning the whole thing.

[monojeff]

I can always cut it so that the taper is on the back rather then the side.
So move it back a little then adjust the taper and you think I'll be good?

[sundog]

I can always cut it so that the taper is on the back rather then the side.
So move it back a little then adjust the taper and you think I'll be good?

You want the taper to be on the front - facing the front of the boat. And it has to be in the prop wash when it's running - it won't do any good if it's too high to catch water. And it will do even better if you tilt the bottom toward the front (just a little) too.

[monojeff]

Yeah sorry I meant taper in front I said it incorrectly.
I will try to adjust this and see if it works better next time out.

Thanks

[properchopper]

Jeff,

Made this yesterday for a project boat. Top will be trimmed shorter.

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[monojeff]

Nice I will be adjusting mine soon hopefully will work better next time out.

[properchopper]

Jeff,

Here's the completed pickup. I wanted two: rudder + propwash to provide extra cooling ; one for SC & one for motor for this application. ( prop's mocked up for clearance measurements)

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