Water cooling problem

[rude5150]

Make the holes on rudder a bit wider. Make holes on water jacket nipple wider. I have the same problem. Im propping down and I made water jacket nipple wider.I've got 2water pickup. One for esc and next for motor. Dont use y fittings. This was my advise from guys on offshore, now im passing it to you. Ive lost 2-220esc , GOODLUCK.

[Jlov]

Thx for all the help everyone. I just ordered the Speedmaster rudder and will update the thread once I get it on boat and make a few runs. Thx Jeff

[rude5150]

Run it for 1 min and bring it in to check temp.

[grsboats]

Yes the brass nippel is for lubricate the shaft.Gill

[Fluid]

rudder water pickups aren't great....

Simply not true in a general sense, rudder pickups are probably the most efficient available. Like any pickup they need to be properly designed, but they are the most common type - for a good reason. Hard to say exactly what the OP's root problem is, but poor pickup execution could well be contributing. I've used SpeedMaster rudders for many years, they work great.



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[NativePaul]

I love water pick up rudders for sport or ovals, my rudders are nearly always in the water, and I sure can't say the same for my hulls. However a pickup blade is pretty thick so prop pickups have there place in my fleet. In hull pickups don't need unsightly silicone dangling from the back of the boat, so I have a place for them too.

[Fluid]

I quit using prop pickups years ago, they have too much drag and supply an aerated flow of water. Underhull pickups can work as long as the pickup is located at an area of high pressure. The pressure under a boat is not the same everyplace. Rudder pickups are best for most applications, IME at least.


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