Hi Neil I used initially DAEX25 sold as a pair as they didn't have DAEX25FHE-4 in stock. I am now using the latter as it suits my amp and I have room inside the Trent hull above the waterline. For your small model you probably need a smaller exciter, if indeed you can fit one at all. I believe Doug has already explained about getting the correct impedance. I initially tried ordering from the States but their shipping costs were about £30 hence the Dutch company.
Doug Mark is right.👍 I have fitted transducers in my 1:16 Trent on the hull sides above the waterline and they worked as well as the 8" mylar speaker I had previously using with the ACTION sound unit. This weighed a ton and the reduced weight made the model sail much better. This tug has little access inside and very little hull above the waterline. I'd stick to the bigger model in your fleet like the PT109 and do a build blog. I hope you are going to start a Sothhampton build blog so we can follow your progress.
Hi Chris Good to hear you managed to get all the bits in. I did wonder where a speaker may be placed and without a good size its won't really sound right. I have used transducers and have two on my Small 1:16 Trent. They work best on the hull above the waterline as PM Devlin did with his model. The Technobots sound units and amps are great but last time I looked I couldn't find them on the site. Re the tank steering I suspect one motor is running faster than the other, you need to get them both at the same speed for the same stick movement on each stick. Any chance of some pics and video. A new post thread would be useful Dave
What ESC were you using? My experience with 600 motors is that they are power hungry, smell a lot and get very, very hot. I had two in a Slipway Trent (they advise the ECO version, no longer available) and used to be able to smell them from the shore! Could be the ESC internals circuitry shut down and may start working again when cool. Any weed in your pond will definitely overload them, which was my problem. Too big a prop will also cause overheating. I had 40mm 3 blade brass props in the Trent. It's possible that the motor is to blame if it has cooked the coils and caused an internal short. Try running direct from the battery with an ammeter in circuit. I am assuming you have checked your propshaft for free rotation and no binding, locknuts can and do come adrift and can tighten up on the shaft, which may explain the slowing down you experienced. Please keep us posted with your progress Cheers Dave
[Score: 10/10] 35" TRENT Capable of 12mph and a runtime of 40mins Twin Propellors (4 Blade 40mm) Direct Drive to a 700BB Turbo (4 Blade) Powered by NiMH (12v) 5Amp/h Batteries Controlled Through robbe navy (30Amps) ESC - Comments: displacement (18lb)
Hi Julian My 1:32 Trent lifeboat has a similar radar housing to your model. I made my radar casing around a very small servo with the feedback removed plus the the internal pins to allow for continuous rotation. You can remove the bottom part of the servo casing to make it even smaller. Mine sticks thro the top of the radar case and I plug the radar scanner onto the serrated drive. It worked fine but I subsequently removed the electrics and drive the motor via a voltage reducer ( I make my own based on a 317 chip) but they are cheap to buy. The real problem is the noise of the cheap gearing in the minature servos. OK on the water but very noisy if you are exhibiting inside. See pics Dave
Hi Julian As Doug has already commented this is a very small coreless geared motor that reduces the revs down to slow speeds. They are incredibly small powerful and quiet. I have a stripped down minature servo in my Trent lifeboat which gives the required speed but it is exceptionally noisy, especially when used in a display environment. This motor is the best I have found on the market and is certainly suitable for your purpose. I do hope you manage to find the solution for your radar and that you share how on the forum. Cheers Dave
Hi Paul As I already have the Action sound unit (Whitby lifeboat engine sound, my model) and a 20w amp I sourced some resonators from Holland www.soundimports.eu/. They were out of stock for the initial order so I bought two lower power exciters to see what they were like. Attached to the back deck of my Trent and plenty of volume but the vibration was very visible. I have now received some 24Watt (Dayton Audio DAEX25FHE-4 Framed High Efficiency 25mm Exciter 24W 4 Ohm) similar to yours and they are attached to the hull sides above the waterline and sound great on the bench. Will be trying on our lake as soon as the weather improves but should be as good as the big 8" speaker I was using and several pounds lighter so the model will sit correctly on the waterline. Thanks for sharing this sound medium Mine are attached by 3M VHB (Very High Bond) adhesive so I am hoping if I need to move or replace I can buy some glue to re-attach Dave
Hi Skipper I have just found exactly the same problem with a LED on my Trent which I am doing some rework on. It's not a constant flicker more a random dimming followed by a couple of flickers. The electrical connection is OK and the problem was with the LED. It's in a tight space and I had damaged the leads into the LED resulting in the fault. I agree with Sonar and believe your best solution is to replace the faulty LED with another if you are sure the electrical connection is OK. Dave
Hello, Firstly is the lifeboat kit still for sale? If so, does it come with instructions as well as plans for each stage of the build? Finally, my budget would be around the £475 mark, would this be considered as a reasonable offer, obviously if not I fully understand. Thank you.
I Have been asked by the widow of one of our old members to sell this kit, it is the complete works from speedline for the Trent lifeboat at 1/12 scale. 48" long. Very little has been done to the kit so far. comprising of:- Hull and wheelhouse Handrail stanchions and kicking boards Casting set Window set Vac forming set Brass rod Screws very small nuts and bolts Running gear set Brass detail set 3 made up crew members She would like offers very near. £500. PM me if interested for contact details this would be for collection from Gravesend Kent only.