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Hello. So after building a Predator Outrigger exactly as the plan says, Ive found some changes are needed for a LiPo setup.
My setup:
3650, 3900kv 5mm shaft
3S, 5000mah Gen Ace
Seaking 120a
Octura P735 prop
Hitec HS-82MG servo
Here is what I've found:
-Rear sponsons were not helpful. Idk if I built something wrong, but the handling and speed was really bad. Once removed, it's a whole different boat.
-Hatches: go longer on the front hatch. With the bigger, thicker battery (compared to the 6-8 cell NiMh pack), you need more moving room to insert and remove the battery.
Go like 2-3" longer on the front hatch. Cut forward. Don't go near the motor mount.
-Sponson carbon rods:
Widen the front sponsons! Add 1.5" on both sides.
Carbon hunting arrow shafts! They're easy to find, strong and cheap cmpared to hobby carbon rods. But! Once you wreck the boat and break a rod, you have to take the old ones out, clean everything up and then re-glue the new ones in. Not anymore!
Put inserts in the hull and sponsons similar to the JAE21 rigger. I've used PEX piping from Home Depot (3/8 o.d.) and drill the inside out with a sharp 5/16" drill bit. USE LOW SPEED - KEEP THE PIPE COOL.
The arrow shaft fits PERFECTLY. Friction to keep them sliding side to side. Do the same in the sponsons. Hold them in with zipties on each side of the hull.
For the sponsons, drill a 2-56 or 4-40 sized hole and put a screw through the shaft and Pex pipe.
Prop: with the high kv's, I've got a P735 and the motor is STILL screaming. In addition, I'll be trying a 1735 and 2135.
Go with much more than a 32mm prop, a 36mm can motor can do much more. Try more pitch before going dia. You wanna keep the RPM's up. 35mm is a good place to begin.
Rudder: 75mm seems to be good. 80mm would be great.
I hope you find these mods helpful, this is an awesome little boat. Flat line speed is fun.
Have a great day!
My setup:
3650, 3900kv 5mm shaft
3S, 5000mah Gen Ace
Seaking 120a
Octura P735 prop
Hitec HS-82MG servo
Here is what I've found:
-Rear sponsons were not helpful. Idk if I built something wrong, but the handling and speed was really bad. Once removed, it's a whole different boat.
-Hatches: go longer on the front hatch. With the bigger, thicker battery (compared to the 6-8 cell NiMh pack), you need more moving room to insert and remove the battery.
Go like 2-3" longer on the front hatch. Cut forward. Don't go near the motor mount.
-Sponson carbon rods:
Widen the front sponsons! Add 1.5" on both sides.
Carbon hunting arrow shafts! They're easy to find, strong and cheap cmpared to hobby carbon rods. But! Once you wreck the boat and break a rod, you have to take the old ones out, clean everything up and then re-glue the new ones in. Not anymore!
Put inserts in the hull and sponsons similar to the JAE21 rigger. I've used PEX piping from Home Depot (3/8 o.d.) and drill the inside out with a sharp 5/16" drill bit. USE LOW SPEED - KEEP THE PIPE COOL.
The arrow shaft fits PERFECTLY. Friction to keep them sliding side to side. Do the same in the sponsons. Hold them in with zipties on each side of the hull.
For the sponsons, drill a 2-56 or 4-40 sized hole and put a screw through the shaft and Pex pipe.
Prop: with the high kv's, I've got a P735 and the motor is STILL screaming. In addition, I'll be trying a 1735 and 2135.
Go with much more than a 32mm prop, a 36mm can motor can do much more. Try more pitch before going dia. You wanna keep the RPM's up. 35mm is a good place to begin.
Rudder: 75mm seems to be good. 80mm would be great.
I hope you find these mods helpful, this is an awesome little boat. Flat line speed is fun.
Have a great day!
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