Small 3S Rigger

[FloatDaBoat]

I started this build of an eighteen inch (plus) Rigger I designed during the 1^st week of October. The stainless mounting hardware I ordered won’t arrive for another week. So, now’s a convenient time to start a build thread.

The motor is a 3300 Kv Leopard 2845 (actually 48 mm in length), ESC a SeaKing 60A, both supplied with power from a Turnigy 3S 30C 3,000 mAh battery - - Going to be a High RPM application !!!

Pics are titled with a description of the building processes involved. Feel free to ask questions pertaining to any particular details.

[FloatDaBoat]

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[siberianhusky]

Very nice! Considering converting my .12 nitro rigger to electric, been no noise complaints at our running spot with the electric boats.
Thinking 2s, 2860 4050kv leopard.
I'd have to build new sponsons and move the rear sponson tube in the tub accordingly.
Down the road I'd love to build a JAE21 fe.

[FloatDaBoat]

siberianhusky,

Thanks for the compliment. The only concern I have is whether the balance between front & rear sponsons will be OK for my design. I’ll be able to move battery placement forward quite easily. If it requires more weight aft, I’d have to add ballast, or go to a lighter, lower mAh battery. OUCH!!!

Your set-up running 4050 Kv on 2S would develop 29,970 RPM unloaded at nominal pack voltage, whereas mine will be 36,630 - - I want this little dude to SCREAM !!!

Hopefully, all will work out for each of us. Lots O Luck !!!

[siberianhusky]

Balance is the reason this one is going 2s, for all the time it takes me to cut another kit I'll just build another with electric in mind from the start.
To be honest I also don't think I want to be without a nitro rigger, I have other places I can run it for fun, I got a couple of years out of a 60$ buggy motor, I really want to run it on a NR .12 and really see what it can do.
I can cut two kits out of a 25$ sheet of ply so I just end up with more boats, I see no problem with that!
I need to make up the templates for the 21fe can build one out of a 25$ sheet.

[FloatDaBoat]

Brackets Fabricated

I’ve assembled the Prop Shaft Strut & Rudder Bracket using stainless machine screws, reinforced with epoxy applied between components. Cosmetic touch-ups yet to be completed. I used a round chain saw sharpening file to prep the Stuffing Tube hole for installation.

[FloatDaBoat]

Stuffing Tube Tacked

I used 30 minute epoxy to tack the Stuffing Tube in place. It’ll get fiberglass reinforcement inside the tub & marine epoxy outside to strengthen it later. Cosmetic improvements to Prop Shaft Strut (& Rudder Bracket, which hasn’t had the holes drilled in the tub yet) have been done as well.

[Boaterguy]

nice!
i'll definitely be following this.
Siberian- i might have a 2S pack for you.

[siberianhusky]

I have a bunch of 2s packs with high enough C rating and capacity, Actually all my current boats are different 4s setups, part of the reason behind wanting to go 2s - don't need to buy packs! as well it seems to be gaining a little wind as a class.
Down the road I'll use my 4s packs in a 1/8 scale hydro in a 8s setup. I enjoy running all classes of boat but my favorite is scale or sport hydro and hydro class.
Get your hull yet BG? Cheers

[Boaterguy]

haven't got a hull yet, thinking about the bling rocket though, naybe one will show up in the xmas thing and I can trade a t600 and other bits for it.
will a 150mm rudder be too big?

[FloatDaBoat]

Servo Installation

Pic 1: Aluminum servo base drilled for lightening & to allow for maximum epoxy contact patch.
Pic 2: Hitec Mighty Mini Servo attached to mount with 2-56 socket head screws with 3 mm SS hold-down cap screws in place.
Pic 3: Servo & mount installed. Also, stuffing tube reinforced with two layers of 2 oz. Fiberglass cloth.
Pic 4: Pigment mixed with Marine Epoxy, applied VERY CAREFULLY in small quantities, using a round toothpick.