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>> Home > Forum > Hobby Chit Chat! > 1/16th scale Tamar
1/16th scale Tamar
(376 views)
Author Message
marlina2
(Chief Petty Officer)





Forum Posts: 7
5th Sep 2018 18:06  
>> Permalink
mdlbt.com/45844

I'm considering Model Slipay Tamar Class as my next project. I have never used styrene before (other than Airfix in my youth). Every article I have read on this model have used a twin Speed 600 ECO set up. I am toying with the idea of brushless but have no idea where to start in terms of equivalent motors etc. any idea anyone?😁

Westquay
(Fleet Admiral!)





Forum Posts: 793
5th Sep 2018 18:47  
>> Permalink
mdlbt.com/45849

I would always say if you don't need lots of speed stay brushed, "ordinary" motors.
As for styrene, it can warp horribly so needs more bracing than you might think or the kit manufacturer might tell you.

Brace with liteply or hard balsa/obeche where you can out of sight.

Martin

marlina2
(Chief Petty Officer)





Forum Posts: 7
5th Sep 2018 19:38  
>> Permalink
mdlbt.com/45850

Your probably right about the motors i just thought why not try them, might be an expensive mistake for no real advantage apart from speed and maybe a little quieter. Thanks for the advice about bracing I'd not thought of that it may be a little flimsy.

RNinMunich
(Fleet Admiral!)





Forum Posts: 2410
5th Sep 2018 23:54  
>> Permalink
mdlbt.com/45857

Hi Marlina,
I agree with Martin👍 Brushless are overkill for scale working boats.
A good quality and well lubricated brushed motor should not be noisy!
Go for a 5 pole motor if you can for extra smoothness😉

Brushless motors whine like scalded cats, especially at low speeds / RPM. It's a consequence of the pulsed DC used to control the speed.
Pitch rises with RPM until only dogs get annoyed!😲
Good luck with your project👍 Don't forget the Blog!
Cheers, Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug
Grant me the Serenity to accept things I can't change, - the Courage to change things that I can,
and the Wisdom to know the difference!
kinmel
(Chief Petty Officer)





Forum Posts: 9
6th Sep 2018 07:01  
>> Permalink
mdlbt.com/45860

Like many people, I originally built a Model Slipway 1:16 Tamar with the recommended brushed motors.

Most of us switched to brushless motors for a number of reasons...

1. short battery duration using NiMHs, or an SLA with brushed.

2. These ALBs have an on-Service speed of 25+ knots and for scale speed, only brushless motors and LiPos can sensibly provide the power and duration.

Model Slipway converted their demonstrator to brushless.

Westquay
(Fleet Admiral!)





Forum Posts: 793
6th Sep 2018 07:39  
>> Permalink
mdlbt.com/45862

25 knots is not very fast and would definitely not need brushless to get a scale speed or a good running time.
Of course if you think hammering around at closer to a scale 50 knots makes it look more realistic, then you might need to go that route.

Martin

kinmel
(Chief Petty Officer)





Forum Posts: 9
6th Sep 2018 08:44  
>> Permalink
mdlbt.com/45863

I can work out scale speed as well as anyone.

I am glad that your Model Slipway Tamar worked well for you with a pair of 600Eco motors, but many other owners changed their motors not long after the model was brought into use.

You don't need high Kv brushless motors, or 4s LiPos to get scale performance with this model.

The addition of a bow-thruster is well worth the effort and cost.