I got a request for details on my NAMBA two lap record holding gas scale boat, the $ Bill. The article on the build is Scaling Up in the NAMBA Propwash. The sponsons and turn fin area has been seriously beefed up since then. Below is the list of parts and hardware I used as well as suggested items. There are a lot of choices, but I listed suppliers I had personal experience with. Pictures on a following post.

A special thanks to Brian Buaas for props and engines as well as for losing a cat fight at the NAMBA Nationals that supplied some slightly used Seducer hardware.

Lohring Miller

CG – about 1” AHEAD of sponson transom & 1” left of center
Deck, misc parts - 1/16 birch plywood doubled on sponson bottom
Laser cut parts – ML Boatworks Newton 106 1/8” birch plywood, doubled on transom & sponson transom
Center section bottom, ride pads – 1/8 mahogany plywood
Radio box – 1/8” lite ply
Cowl – epoxy coated ¾ oz glass cloth over pink foam
Scale engine – scrap plywood & balsa
All wood coated with West Systems epoxy
Paint – PPG Deltron DC3000 clear coat over Minwax Rosewood water based stain or PPG Shopline base coat
Graphics – Thunderboat Graphics
Aluminum – aluminum duct tape
Engine – 29.5 cc (36 mm bore, 29 mm stroke) & 30.5 cc (36 mm bore, 30 mm stroke, 55 mm rod) Brian Buaas modified Zenoah Similar commercial engines are CC racing or Gizmotors 28.5 & 29.5 cc engines Most powerful, proven stock motor (in my opinion) Quickdraw 29.5 or 30.5 cc Pioneer
Tuned pipe – CC racing Beast (no longer available) consider new CC Racing, Insane Big Max, or Quickdraw hot pipe with Insane thunderboat transom exhaust kit
Rudder – Seducer cat rudder Similar to Insane A 17 single pickup wide rudder with A 10 rudder standoff
Strut – Seducer cat Similar to Insane A22a thunderboat strut
Turn fin – custom ¼” thick x 7” long x 4” wide on custom ¼” thick x 1 5/8” wide bracket with 5/16” thick x 1” x1 ½” angle attachment Sponson reinforced with 1/16” aluminum on outside, 3/16 aluminum inside
Engine mount – Seducer similar to Marine Specialties, both with custom rail mount angles Insane M 20 probably could be used depending on rails
Drive line – Aeromarine ¼” round collet (Insane D 17), ¼ ‘ x 34” long cable with prop shaft, drive dog Insane D 13, shaft bushing Insane D 22, Prop nut Insane D 12
Start pulley - Quickdraw use Speedmaster Geezer Pulley
Propeller – various, contact Propworks for whatever engine you decide to run

ML Boatworks www.mlboatworksrc.com/
West Systems www.westsystem.com/ss/
Thunderboat Graphucs www.thunderboatgraphics.com/
Insane Boats www.insaneboats.com/
Speedmaster www.rossisales.com/
CC Racing www.ccracingengines.com/
Gizmotors www.gizmomotors.com/
Marine Specialties www.marinespecialties-rc.com/photoindex.htm
Seducer hardware www.seaducerboats.com/hardware.htm
Propworks www.thepropworksusa.com/index.html
Quickdraw www.quickdrawengines.com/

Thanks Lohring, that helps a bunch because I have 2 sets of parts for this same hull sitting on my bench ready to start assembly. Too much other stuff going on at the moment. My boats haven't even seen water yet and probably won't for another month or 2.