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Hi Tyler, yes i know about capasitors. I have a carging electronic where i can set the current , so the peak amps draw is limitet from the batterie . You know we have some know how about high power short time power use when we designed the coil gun . Itxs just an idea to use high energie dens...

And the full proprider with 3 propeller at each sponson. I know there is a video in action , i will look about it. Happy Amps Christian

More pictures:

Hi, After Mike asked me about the twin front proprider in the other thread, I have to go back a bit. A few years ago I built an Ed Fischer canard in balsa wood. I installed the drive motor in the front of the front sponson with a very short propeller shaft so that the propeller was placed only 1...

Hi Mike, thanks for your thoughts about the Catamaran and how it performs. To build the Aronow catamaran i got the idea at the Munich SAW last week. The fastes boats during the competion are catamaran L20 class. around 250 km/h that are 156 mph with a similar powerplant like the unlimited...

Hi Mike, yea, but never say never . Two props on one shaft , posible with flex cable. 🤪 And have you ever seen a full size UL Hydroplane with flexcable drive . They have all straight solid shaft. Modelboater , most have flexcable driveshaft for easy adjusting. I have straight shaft on my...

HI Lohring, every esc has the capasitors to lower high volt peak . So there is no question every budy has capasitors but the size . Some have one , some have 4 or 6 . But the size can play a big rule when it comes to peak current . The capasitor bigger ultracapasitor can handle much higher...

Hi Lohring, IMPBA say under Section J Fast Electric at E. Scale FE Unlimited Hydro , number 4. 4. Motor, Boat and Battery Specifications a. All boats to be modeled after Unlimited hydroplanes from past or present. b. All boats to be built to a scale of 1- 1/2" to 1'0" (1/8 scale) plus or...

Hi, another question about electric drives. Every ESC has a capacitor bank in front of the ESC. Are there limits on the capacitance of the capacitors? For example, can I use high-power capacitors there that were not pre-charged before the competition. The energy comes only from the battery...

Hi, I have a few questions about 1/8 Unlimited Hydroplanes rules. Specifically SAW racing. The IMPBA rule book says that any unlimited hydroplane that was built according to the rules can participate, with a driver, cockpit, dummy engine and drive as in the original. I would love to build Don...

Hi Michael, some crazy ideas to build outborder motors. You see the pictueres with the twin motor and twin propeller outborder. As the contra rotating propellers the skeg fin can benvery small as the propwalk force is zero. The outrunner motor with the gear is also a futur project. The 2:1...

Hi, glad to surprise you . With only one belt the c.g. can be lower. , i will show you some ideas later. Happy Amps Christian

Hi, have one from ABC , converted to electric , early AVEOX brushless motor . Runs good but you need a tunnelski in front of the belt gear of the propshaft to keep the water away from it. Otherwiese it will shovel a big rooster from the belt an a second from the propeller. Than you have a big...

Jeff, i will have to look in my old modelboat mags. i know i had the pictures of him . His rigger are build around the hardware. He used Astrofly motors and i think i remember he has one rigger with 18 to 32 sanyo cutoff 600 mAh cells and a smaler one with 6 to 12 cells same size. Most unusuall...

Hi Marty, Did you know that a Crapshoter Outrigger held the world speed record for electric model racing boats in 1984 50 mph until 1993 when Jim Augustine officially drove higher speeds. In the picture my Crapshoter which I bought in 1983 as a kit. Since with 30 SubC Nicad cells and a rewound...

Hi Glenn, becaus of the different type of abc , not easy to find a website, will try on to search. here a video show such easy made , singel cell 3,7 volt class boat with cheap brush motor , Mabuchi , Jonson and many other . when they hit the wall at the end of the track the cell will open...

Hi, moore rigger and so. Mix Happy Amps Christian

Hi an other event from Thailand , electric dragrace competition. Happy Amps Christian

Hi, that are very basic rigger build and they run without radio , but see and have fun. how to build, Happy Amps Christian

Hi, try the twin rudder . With two servo motors you can change the position together during you run the boat. So you can ad some lift with them like a trim tab but no need them mount . Doing a corner will give you some freedom to steer moore with the inside or with the outside rudder , possible...