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    What connector to use?
    Have tried many of these ideas, but have settled on a different approach. Since standardizing on LI-PO cells and been concerned about the reports of self immolation and fire have decided to always transport the cells separate from the vessel. This means my deck and wiring should be readily removable to install and remove the cell. Using two wire brush type connectors off a slot car fed the +ve and negative wire through the deck connecting to the brushes. On the underside of the superstructure soldered mating wires onto brass washers. Whenever the deck is screwed down a good connection is established.This feeds battery voltage into the superstructure which contains all the control circuitry for lights,
    etc. Even I cannot forget to disconnect the connecting wires now!
    7 months ago by RHBaker
    Radar with rotational drive
    The EeZeBilt OSA Missile boat is 1:48 scale (see http://eezebilt.tk/OSA.html ). It uses a couple of geared motors for its two radar
    . They were sourced from ebay to have approximately the right revs - faster if anything. See: https://www.ebay.co.uk/itm/3V-Model-Making-Multipurpose-Hand-Square-Micro-DC-Motor-Gear-Gear-DIY-Box/233174112136?hash=item364a429788:g:eC8AAOSwGDNckuvL and https://www.ebay.co.uk/itm/S7T7-DC-3V-30RPM-Torque-Geared-Gearbox-Gear-Box-Micro-Electric-Motor-Silver/302844117212?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20140122125356%26meid%3D0e921d41ff3b4ca6979bf779b4df3ff1%26pid%3D100005%26rk%3D6%26rkt%3D12%26sd%3D233174112136%26itm%3D302844117212&_trksid=p2047675.c100005.m1851 Each was then adjusted for speed using a voltage reducer. One is required to go at about twice the speed of the other: https://www.ebay.co.uk/itm/New-DC-DC-Adjustable-Step-Down-Buck-Voltage-Reducer-Stabilizer-Converter-Case/382762061618?hash=item591e658f32:g:1FwAAOSwLKhb9RNY This measured ideal voltage was then fed to each one by dropping the boat master voltage through a separate series of diodes for each motor. Both
    can be separated for packing. The rear one slots direct onto the drive shaft. The front scanner is driven by a thin piano wire which pushes into a silicone tube connected to the drive motor when it is assembled. Specifically, what do you want to know?
    11 months ago by DodgyGeezer
    Radar with rotational drive
    Here is a bit more detail on the OSA 1 - All EeZeBilts live in their made-to-measure Correx box 2 - This OSA box carries the R/C Transmitter as well as the radar and aerials on a separate tray 3 - A closer shot of the radar. You can see the brass extension which slips into the silicone tube under the mast. The brass tube at the top is a 2-size box spanner for attaching the radar and the rudder, with spare nuts. 4 - Under the superstructure, you can see the two different motors (bought just to try them out) with two different mountings. The electronics in the centre is a made-up R/C switch using the Luton circuit for turning the
    on. You can see a string of diodes inside the purple heatshrink. 5 - Here is the superstructure assembled. 6 - A shot from above 7 - And one of the Bridge. The sailors are Indian Navy, since this is a model of the INS NIPAT, but at the moment she is wearing a North Korean flag...
    11 months ago by DodgyGeezer

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