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SAR1906 SH2015 building model

TOPIC: SH2015 Motorisation

SH2015 Motorisation 3 years 6 months ago #8

Version 0.5 runs with two brushed motors 2-6 volt DC at a cost of circa eur 5 each. See item no. 71790 in the Muldental webshop http://www.kabel-me.de



They can be mounted directly in the fittings of rafter 6.

This allows for a lightweight small one cell Lipo battery
The drawback offcourse is a short run and a relatively slow (but to-scale) boatspeed.

These two engines weigh 20 grams each.

The model is controlled with 2 pieces 20 amp brushed controllers at a cost of about eur 15 each and a weight of about 8 grams each.


Model 0.5 is remotely controlled with a 2 channel receiver.

The jets are merely tunnels with an exhaust of 25% propeller diameter.

Version 0.5 is to prove that steering with the engine power is enough and no rudder is necessary. Testing is underway. Reverse, though very slow, is possible with these simple jets.


For powerboat builders; there is a 1:50 jet with reverse and steering.
See: www.harztec-modellbau.de

At Dortmund a 1:50 scale model of NH1816 was spotted, fitted with rudder and one propeller.


Weight is big factor. Version 0.5 has a fair waterline with about 100 grams of electronics, battery, engines and propulsion.

We'll do some more testing on weight and speed in the near future.
StevenH
Last Edit: 3 years 5 months ago by Steven.
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SH2015 Motorisation 3 years 1 month ago #14

The first test run of SH2015 is promising and as expected! The boat is very manouverable on its Jets which have a slight J-shaped curve inwards. Steering flaps are not necessary! This keeps the weight down which is the number one issue on this scale. Reverse is under study. There is too much false air in the Jets. Here is the filmed test run of NH1816 model:
StevenH
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