Rudder Water Pick Up - Speed Master

[Davidmc]

Hi Guys

I have a speedmaster rudder on my titan 29. The water pickup hole is on the left side of the rudder. Since the boat will mostly be turning to the right, this may prevent water from coming in. Should I close the hole up with some jb weld and make a new water pickup on the right side?

Thanks

Dave

[Doug Smock]

No worries mate, you'll pick up plenty of water with that rudder.

Doug

[crabstick]

Yep, i also have left hand hole on my speedmaster hydro rudder on my whiplash, and it picks up plenty of water

[785boats]

The rudder that came on my 32" Apparition cat has an intake on each side at the same level. This leaves a hole through the rudder also. But it delivers great water pressure no matter where the rudder is facing. So if you are going to make a new intake you can leave the other one as it is.
Cheers.
Paul.

[Raydee]

I wondered this for years. The only explaination that I got that made any sense was that the nitro guys don't want water cooling all the time. They need their engines to run at a certain temp for best performance so the rudder won't pick up as much water in the turns but will work great in the straights. I have no idea if that is true or not. I know Fuller's rudder had the pickup on the left side of the rudder and I always thought that was the best way to do it on the FE hulls.

[tylerm]

I think i read a story saying somewhere that speedmaster have it on the left side as when they were on the right side, fast nitro riggers were getting too much cooling through the turns, effecting the engines.

[Fluid]

It is only a problem to those who seem to always look for problems with mature R/C boat technology. Most FE boaters run far too much water through their cooling systems anyway, slowing the flow down a bit actually helps cooling. It takes time to transfer heat to the water - this is a physical characteristic of water called specific heat - and running water through the system too fast reduces cooling efficiency. Unfortunately, you have to believe in science to accept this idea since it seems counter-intuitive to some.



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[785boats]

I've always been a believer of that concept. That's why I use the smaller bore tubing to restrict the water flow to just a few inches out of the exit. That's what I call healthy.
No need to just believe in science. For the non believers it's easy to prove for yourself.
Bring in a hot boat. Connect up a squeezy bottle full of water to the water inlet tube & squeeze hard enough to create a stream of water a couple of feet long out of the exit. Feel the water. It's cool or maybe just tepid. It's not bringing any heat with it.
Now reduce the pressure to just a trickle & feel the water. It's hot. It's bringing heat with it.
Cheers.
Paul.

[Raydee]

It is only a problem to those who seem to always look for problems with mature R/C boat technology. Most FE boaters run far too much water through their cooling systems anyway, slowing the flow down a bit actually helps cooling. It takes time to transfer heat to the water - this is a physical characteristic of water called specific heat - and running water through the system too fast reduces cooling efficiency. Unfortunately, you have to believe in science to accept this idea since it seems counter-intuitive to some.



./

Very valid point
That is why we need guys like you in the hobby or guys like me would be lost.

[crabstick]

Unfortunately, you have to believe in science to accept this idea since it seems counter-intuitive to some.
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