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>> Home > Tags > lifeboat

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Inner Wheel by rolfman2000 Admiral   Posted: 22 hours ago
[Score: 5/10] 32"/3500g Inner Wheel Capable of 5mph and a runtime of 45mins Twin Propellors (3 Blade 35mm) Direct Drive to a Graupner 700 x 2 (3 Blade) Powered by LiPoly (11.1v) 5Amp/h Batteries Controlled Through Hobbywing (150Amps) ESC - Comments: She is a 1/12th semi scale Brede model of the Poole lifeboat used for many years. She is constantly being modified and improved.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Skydive130 Fleet Admiral!   Posted: 4 days ago
It’s taken most of the day cutting out the formers and sanding to something I am remotely happy with, that’s liteply for you. I expect once I get to the cabins that I will also scratch build with better quality wood.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Bobatsea Chief Petty Officer   Posted: 4 days ago
Agreed. The plywood is poorly stamped and requires much sanding. The Canadian 44 had an enclosed cabin, so for me I've scratched build the cabin and didn't use any of the supplied wood for it.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Skydive130 Fleet Admiral!   Posted: 4 days ago
What do you think of the wood quality Bob, I thinks it’s dire!

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Bobatsea Chief Petty Officer   Posted: 4 days ago
Great project I'm currently doing the same kit, but I also got the Dumas running gear kit with the model. I'll be converting my boat to the Canadian version of the 44' lifeboat (Bamfield Lifeboat).

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Dave M Fleet Admiral!   Posted: 4 days ago
Depends what size really. I use one 11.1v 2200mA and get 20 mins. Easy to bring in and change to a new one. Weight is the main problem and using a bigger or two LiPos will be heavier. Whatever you choose is likely to be lighter and more powerful than an SLA.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Skydive130 Fleet Admiral!   Posted: 4 days ago
Next question then Dave, is there room for 2 Lipo’s or should I stick to one high mah one?

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Dave M Fleet Admiral!   Posted: 4 days ago
The 12v I used was small and didn't last long. I see from your next post that you have decided to go brushless and LiPo and you won't be disappointed. The battery warning devices are essential for LiPo type batteries and I am sorry if I lead you to believe they were required for SLAs.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Donnieboy Lieutenant   Posted: 5 days ago
There are smaller 12v SLA's but you sacrifice with a lower amp hour rating.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Skydive130 Fleet Admiral!   Posted: 5 days ago
Cheers Dave, some good stuff there. Are there smaller 12v SLA than the giant house brick I have in my aerokits Solent? Don’t want to sink it with a huge brick lol. I may look at a brushless conversion at a later date, would be easy enough to swap out the brushed motors and replace. It’s just that I have all the brushed stuff available that was going to go in another model, may as well use that first. I have battery warning devices for my aircraft, but they are lipo only, will have to look for sla types?

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Dave M Fleet Admiral!   Posted: 5 days ago
Hi I have the Billings version as does a fellow club modeller. Initially I used two 300 motors with a 12v 1.3amp battery placed in the rear cabin space. Good for about 4 mins then died. I now use two brushless 28xx size 30 amp ESC and an 11.1v Lipo 2.1 amp. My friend has a similar set up. Gives about 30 mins and exceptional speed. The lipo sits where the SLA was. I can understand your concerns about the lack of warning on your Mtronic but you can source battery alarms that will emit a loud noise when the cell voltage gets below the set voltage. Providing you are paying attention you will hear and bring the boat home. The running time will be similar on each occasion so you could also use a stop watch (on your phone). I have tried NiMhs but they lack the power and are nearly as heavy as the SLA.

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by figtree7nts Fleet Admiral!   Posted: 5 days ago
Remember the batteries back then were very heavy! You might be able to go lipo! But that's a subject I'm not familiar with! You'll have to ask around!

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by figtree7nts Fleet Admiral!   Posted: 5 days ago
Back then Tom my friend was using a NiCad 7.2volt! But today who knows what battery you can use!

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by Skydive130 Fleet Admiral!   Posted: 5 days ago
Any ideas on batteries any ideas on batteries at all?

Dumas 1203 Coast Guard Lifeboat (RNLI Waveney conversion) by figtree7nts Fleet Admiral!   Posted: 5 days ago
From what I can tell it's still available! http://www.dumasproducts.com/product_info.php?cPath=136_49&p... Got a chance to help out a friend of mine about some 30 yrs ago with this same model! It's a good build! Good luck with the conversion!