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Another Outrigger Predator project!

Old 10-22-2008, 04:05 PM
  #126  
j.m.
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Default RE: Another Outrigger Predator project!

WAY MORE?

Buddy used the stock esc.

Yes, I know it's a weird comparison, but it does give me a little hope.

Would a positive prop angle get the rear of my hull out of the water more?
Old 10-22-2008, 07:44 PM
  #127  
warfile
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Default RE: Another Outrigger Predator project!


ORIGINAL: ryan_t888

Have you ran it yet?

Ryan
No, not yet. Its been on hold due to the Mini-z PNRacing World Final.
I'm going to be in Las Vegas to run it, 2 weeks from now. :-)
Old 10-22-2008, 10:37 PM
  #128  
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Default RE: Another Outrigger Predator project!

ORIGINAL: j.m.

WAY MORE?

Buddy used the stock esc.

Yes, I know it's a weird comparison, but it does give me a little hope.

Would a positive prop angle get the rear of my hull out of the water more?
Yes way more. Saw Setups pull a rediculous amount of current. If you make more than 2-3 passes you run the risk of burning up the lipo's, esc, or motor. The motor, and esc, were over amped for each saw pass. You will not see anyone here on RCU try it unless they have SAW experience.

I logged around 60A on the SV ESC trying to spin a big wheel. Only ran for 30 seconds or so, things were starting to heat up, especially the motor.

You want the prop to point downward to increase lift. I believe this is in the negative direction. Also a better prop would help. More along the lines of a lifter type prop - high pitched. Or use rear ride pads.

Another thing to keep in mind CofG should be close to the turn fin, I like to keep it as close to the rear of the front sponsons as I can.

Ryan
Old 02-04-2009, 04:54 PM
  #129  
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Default RE: Another Outrigger Predator project!

Whats happenned to my pics!![][][]
Old 02-04-2009, 06:51 PM
  #130  
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Default RE: Another Outrigger Predator project!

On a clockwise rigger like the predator does the rudder go on the left or right side of the boat for running clockwise? I see both which is the prefered method? Thanks in advance
Old 02-04-2009, 06:51 PM
  #131  
warfile
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Default RE: Another Outrigger Predator project!

They are back!!! :-)
Old 02-04-2009, 06:59 PM
  #132  
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Default RE: Another Outrigger Predator project!

Mine is on the left side and the water exit on the right. Maybe the ideal thing is if it were in the center
but i don't know much about this! This is my first boat ever.
Old 02-05-2009, 08:32 AM
  #133  
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Default RE: Another Outrigger Predator project!

How do you guys put the servo on the inside? What servo do i use?
Old 02-05-2009, 01:43 PM
  #134  
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Default RE: Another Outrigger Predator project!


ORIGINAL: pzrwest

On a clockwise rigger like the predator does the rudder go on the left or right side of the boat for running clockwise? I see both which is the prefered method? Thanks in advance
Riggers its just a matter of preference. I run mine on the right, the left side would work well too. For sport hydros left side is best, and for monos right side is best

Ryan.
Old 02-05-2009, 02:44 PM
  #135  
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Default RE: Another Outrigger Predator project!

Just whichever you choose, make sure the rudder pushrod is under tension when taking a right turn.
Old 03-11-2009, 10:02 PM
  #136  
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Default RE: Another Outrigger Predator project!

i am currently building my rigger ( first scratch build for me) , i have a a Question what ways can you mount the boom tubes
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Old 04-18-2009, 01:14 PM
  #137  
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Default RE: Another Outrigger Predator project!

I'm new to the electric boat scene and I want to build a predator. I've read this entire thread, but I think I need to ask these questions anyway. I fly a trex450 heli and swapped the stock motor for a scorpion motor. The stock align 430xl is a 3700kv outrunner in a case. Can I use this motor in a predator with the 3s 30c lipos that I currently use in my helis? Should I use a 60 amp esc? What prop would you guys recommend? Thanks for the help.
Old 04-19-2009, 04:49 PM
  #138  
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Default RE: Another Outrigger Predator project!

That 3700kv motor is best suited for 2s2p lipo setup. Hydra 120 or ETTI 150 esc should work.
Old 04-21-2009, 09:24 AM
  #139  
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Default RE: Another Outrigger Predator project!

Is it the fact that the boat is direct drive and the heli is geared that the components that work together in a heli won't work in the boat?
I would rather use the 3s lipos I already have, so what motor/prop would power this boat on 11.1v?
Old 04-22-2009, 02:52 AM
  #140  
Simon.O.
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Default RE: Another Outrigger Predator project!


ORIGINAL: VinceY

I'm new to the electric boat scene and I want to build a predator. I've read this entire thread, but I think I need to ask these questions anyway. I fly a trex450 heli and swapped the stock motor for a scorpion motor. The stock align 430xl is a 3700kv outrunner in a case. Can I use this motor in a predator with the 3s 30c lipos that I currently use in my helis? Should I use a 60 amp esc? What prop would you guys recommend? Thanks for the help.
I do not know much about the power output for outrunners.
For a Predator rigger hull you need rpm and lots of it with a bit of torque as well. 30,000 rpm is a good area to be in.
Once you load the motor the rpm will go down and the Amps will go up. This is what riggers do.
I run a 8S (4400kv) Feigao on 2S via a 432 prop for 40 mph speed.
My reading tells me that the Heli motors do not have a lot of torque, you can go 3S on this motor easily but use a small prop to start with. Try to find a 431 plastic and give that a whirl.

I have made a few riggers with a lot of different motors and have a bit of experience on the water to back up any suggestions that I make.

Cheers.
Simon.
Old 11-26-2009, 08:35 PM
  #141  
Cwr_outrigger
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Default RE: Another Outrigger Predator project!

what kind of wood did u use besides balsa
Old 03-20-2013, 10:10 AM
  #142  
warfile
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Default RE: Another Outrigger Predator project!

After a few years sitting in the trunk, i pull it off to finish it!!!!!! :-)

Assembled the nose last friday...


Motor and Esc in place to see the clearence inside...


servo holder to be glued hopefully sometime this week!:-)

Old 03-24-2013, 08:45 AM
  #143  
warfile
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Default RE: Another Outrigger Predator project!

Servo mount glued in place...


Old 03-24-2013, 05:04 PM
  #144  
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Default RE: Another Outrigger Predator project!

Your photo shows the servo pushrod will hit main body of servo. Also the rudder hookup in last hole will have to be moved in at least 1 hole or the pushrod will have to be bent alittle straighter. Best to straighten rod some by 2mm which won't hurt excessive movement of rod. Now if you turn pushrod upor down will createexcessive movement and ease of movement of pushrod.

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