Response

Re: Any Advice On 40MHZ!

Hi Pete, On my U25 I strung (strang stringed!?🤔) the RX antenna from the end of the net cutter on the bow, up to the tower and back down to a tension spring fixed to a bracket on the stern. Just like on the originals. Since the whole deck and flooded part of the hull lifts off I had to find a way to get inside the boat! Under the foredeck the wire goes to a plug which mates with a socket glued into the top of the pressure hull. A tiny 6 ch pico RX is fitted right up in the bow, where the torpedo room should be 😉 Total length of the wire was, within a cm or so, equal to the original length fitted to the RX 😊 Works quite well, so far!! If you do this on your boat and the total wire length is significantly less than the original then add the missing length as a coil inside the boat. The reason for doing this is to maintain the effective length of the antenna and hence it's impedance. The RX input has a particular impedance (complex resistance) and the antenna must match it for maximum signal transfer between them. Here endeth today's lecture! 🤓 Pics later, when I have time to dig out the camera and the bits of the sub. U25 is in refit at the moment anyway, had an unfortunate collision with the bench top and wiped off the antenna and deck fittings!🤔 Attached is an 'aerial view' of before the collision, together with a 1936 contemporary, my destroyer Hotspur. The insulated antenna wire can be seen running from the aft bracket up to the tower and beyond. The pic can be blown up much larger to hi res. The boat is 107cm stem to stern, 1/72 scale. Also found a pic of the bow compartment showing the tiny 6ch RX😀 The two servos are red for rudder and blue for bow planes. The antenna socket is just forward of the deck mounting stud visible on the right of the pic. The antenna wire can be seen disappearing into the forward bulkhead. JFF added a pic of a new crew member taking a leak over the side 😮😉 Cheers, Doug 😎

4 years ago by RNinMunich

Response

Re: 40'' Seaplane Tender, first test run

Not to mention ramming the jetty at 20 knots Martin!! Breathalyse that man occifer! Looks very good JB 👍👍 Couldn't hear too much of your sound modules though 🤔 German kids (and their Gramps) seem to be a bit more disciplined. Some even ask intelligent questions about how things work and not just "How much did it cost Mister?" or "Where can I get one?" or "Do the guns fire?" One of the Gramps once asked me if my destroyer was based on a German T-Boat, Torpedo Boat. Similar to the precursor of the real Destroyer, the Torpedo Boat Destroyer. Seemed disappointed when I told him it was a 1936 RN Destroyer. Turned out he had served on the T-Boats! Cheers, Doug 😎

5 years ago by RNinMunich

Forum

Fast attack craft

Hi Red, "wish I had more time to build .....and built a little faster . (One took 10 years...) " I started my 1936 destroyer Hotspur some 53 years ago😮 She's now undergoing her third major refit and upgrade!!😉 It's taking about as long as a Nimitz class Midlife Refit does☹️ Cheers, Doug 😎

5 years ago by RNinMunich

Response

Re: boston

Know what you mean John, I first built my destroyer in the mid 60s. Mostly balsa but some plastic. When I started refitting her about 32 years ago most of the plastic bits crumbled and fell apart.😭 Binders were all leached out 😮😭 Only plastic stuff that survived were the Airfix 1/72 8th Army and Afrika Corps soldiers I had shanghaied into the Navy!😁 Who still says 'They don't make stuff like they used to'?? I rebuilt the superstructure using 0.5mm marine ply. Nice rebuild John, keep 'em comin' 👍 Doug 😎

5 years ago by RNinMunich