David

If the transmitter has been lying unused for as long as it appears to have done then the batteries will be useless anyway. That set was last made in the 70's (I think…) and will almost certainly have NiCAD batteries. If you can take the transmitter apart enough to remove the battery pack then take some photographs and measurements of that we might be able to recommend suitable replacements, along with a charger. I doubt you will obtain a suitable lead for that socket but that's incidental; you can easily wire the new pack to a standard 2.5mm DC socket and fit that into the side or rear of the case.

Addendum

I've just found this photograph on a French website:

If you look at the second one down you'll see the inside of the Tx, shown upside down. There's what looks like a shiny corrugated tube along the bottom (at the top…) which is split into 10 segments.The batteries in that pack are DEAC cells which were around when I first started RC modelling in the 60's! You will definitely not be able to buy direct replacements for those! The Tx appears to run on 12v which is equal to ten "modern" NiMH cells. If you're confident then you could obtain a suitable pack and connectors from Component-Shop and fit them yourself. If not then you might be best advised to remove all the Graupner radio and fit a new 2.4GHz set instead. There's no guarantee that even with a new Tx battery pack the radio will work, and spares are without doubt unobtainable. A collector might buy the set from you.

Dave M

Edited By Dave Milbourn on 06/05/2017 15:32:07

Edited By Dave Milbourn on 06/05/2017 15:35:20

David

If the model has more than just motor speed/direction and steering then you'll need more than just a standard 2-channel set-up. There are many different wiring diagrams on this website and each would suit different variations e.g. twin motors + bow thruster + three lighting circuits. Have a good look through them and see which comes nearest to the Arcadia in terms of operating functions. **LINK**

DM

David

What a travesty to fit out a beautiful model in that way. I'm sorry to have to say it but that is one of the worst rat's nests I've ever seen in a model boat. It breaks every rule I can think of and introduces a few new ones. If you can wade your way through incorrect cable sizes, no fuses, unsupported wiring, 8 microswitches, badly-soldered joints, choc-blocks, PVC insulation tape and motors partly held in with what looks like lashings of snot then you might stand a chance of getting at the radio to see if it works. As I said earlier you will not be able to replace the DEAC cells like-for-like; the best you'll get is something along these lines **LINK** but with ten cells instead of eight. Whether you can get such a pack to fit inside the Tx is another imponderable, but it's going to cost you at least £20 to find out. A 3S LiPo (11.4v nominal) might be another option, but more expensive. A 4-cell Rx pack is another £7 plus three quid for a switch harness – unless the Rx system is centre-tapped…

If the object of the exercise is to get that lovely model back on the water under proper control then frankly you are wasting your time with the existing installation unless you are completely clued up on vintage/obsolete 27MHz radios. If the drive motors still work then I'd advise starting again with just those – strip everything else out and put the radio on E-Bay for a collector or spares. The FRSky is a very fancy set but complicated by computerised functions for aircraft and helicopters – totally unnecessary for model boats. A 2G4 full-range, non-computer set such as the Hitec Optic 5 or Futaba 4YF would be a better buy IMHO.

Dave M