If you look in nature,
Fast birds and fast fishes
Are beautiful and efficient.
And this boat is created in the same way!

- Ocke Mannerfelt (Designer) -

This boat is my answer to the proposed NAMBA Offshore class. I really like this class because it required each boat it look realistic to that of a real offshore boat. Which just proves what people like.

My Boat has been voted #1 as peoples choice at a local model boat regatta.

Against very well constructed mahogany boats and scale ships.

This boat will also appear in the January 2000 edition of Marine Modeling International,

published by Traplet UK.

 

Technical Specifications

Graupner - 1:10 scale B24

Hull Length - 28.25 inches

Hull width - 9.5 inches

Dry hull weight - 10.5 ounces (pre-joined deck included)

Total finished weight - 4.25 pounds (approx.)

Prop - Octura X442 using 4mm drive dog

Drive hardware - Graupner Z-Drive 800 (Steel bevel gears)

Made of cast aluminum, all shafts run on double ball bearings.

Motor - Ultra 1300 series 7 turn

ESC - Tekin G12c3

Servo - Hitec 225BB (mighty mini)

Receiver - Hitec FM

 

What is in the Kit?

The kit comes with the hull and deck pre joined and is made from GRP (fiberglass reinforced plastic). Along with the hull, other details are also included, display stand, retaining rail, servo console, pushrod connector, sealing tube, bellows, steering pushrod, retaining clip, etc. Also included are the fine details like side mirrors, windshield wipers, cockpit vents, bow rail, etc. The instructions provided are very clear, show construction of the two options of assembly, and what types to glue to use on the different materials. The method I picked is my own. Graupner said that it would be to much for the hull. But I have now got the boat running where I think it works the best, and it does work! What you will also need is your drive system, the instructions show either the Z-Drive 600, or twin surface drives (counter rotating). I wanted to run 12cell, so the Z-Drive 800 is what was required for the realistic appearance. Also a good ESC to handle what ever motor you choose to use, and radio & batteries. As seen in the left picture, I also custom made exhaust pipes & water cooling tube to fit.

 

Construction

Construction of the kit was very easy, consisting of a minimum of three parts that needed to be glued in. I added a couple of other options that are available for the real B24. The exhaust pipes double as the exits for the water which is drawn up from behind the prop to cool the motor, which works quite well at full speeds. The bow rail I found was a bit tricky, if you want to make it look realistic. The GRP material is a bit hard to drill into for angle holes, and tends to chip. The two glues I found work the best are CA, and a glue called Goop. It works very well on fiberglass. The rubber seal seen in the left picture wrapping around the opening was added because I found that water was able to get inside the boat during normal running, and also helps keep the canopy in place. Also the Velcro on the back sections was added because in a sudden

tight turns the canopy would slide around and splash water inside. Finishing the two versions is quite simple, and the decals provided go on easily. Of course you can do what ever you choose for your own liking. My self I decided after some thinking, to replicate the first real B24 made. I used silver, & true blue Krylon paint. Along with a couple coats of a clear.

Finishing

Finishing the two versions is quite simple, and the decals provided go on easily.  Of course you can do whatever you choose for your own liking.  Myself I decided after some thinking, to replicate the first real B24 made.  I used silver and true blue Krylon paint.  Along with a couple coats of clear.

 

Running

Well for this section all I can comment on is my own results of the setup I did. The first time I can the boat, I found it was really jumpy. After trying a couple of different props, and adjusting the drive angle I figured perhaps Graupner was right about it being to much for the hull. But I decided to add trim tabs after I saw that my dad's first mono hull reacted the same way. So the first run after adding them, the top speed increased, and the boat ran perfect. 

 

Conclusion

In conclusion, I think this is a very well designed boat. The quality of the kit is excellent, and I highly recommend this boat for all levels of modelers. Watch out offshore racers, the B24's are coming!

 

Websites of Interest

Ocke Mannerfelt Design ( http://www.ocke.se )
V24 Race Boat Fan Site ( http://www.batboats.com )
Graupner (English) ( http://www.graupner.com )
Tekin Electronics ( http://www.tekin.com )
Hitec ( http://www.hitecrcd.com )
Traplet UK ( http://www2.traplet.co.uk/Traplet/Homepage.html )

 

Special thanks to Tony Treichel for writing this article for Rum Runner Racing.  Contact Tony with any questions about this article.  tony@kelownafastelectrics.com   or at: http://www.kelownafastelectrics.com

 

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