Topic: Filipino Long Tail boat (Read 38961 times)

vnkiwi · « **Reply #50 on:** July 11, 2014, 12:52:02 pm »

Rich,
some of them look very agricultural, but they are brilliantly simple, reliable and work well.
good luck
cheers
vnkiwi

U-33 · « **Reply #51 on:** July 11, 2014, 01:08:44 pm »

It is a very simple concept...use what you have laying about, and make something you need out of it.

Rich

vnkiwi · « **Reply #52 on:** July 11, 2014, 01:21:17 pm »

exactly Rich, and the SE Asian countries do it so well.
cheers
vnkiwi

U-33 · « **Reply #53 on:** July 11, 2014, 01:36:25 pm »

Shame we don't do that any longer...

Rich

vnkiwi · « **Reply #54 on:** July 11, 2014, 01:51:54 pm »

you got that right Rich.
Dont see much of that around here either

vnkiwi

Martin (Admin) · « **Reply #55 on:** July 11, 2014, 02:33:05 pm »

Topic renamed

U-33 · « **Reply #56 on:** July 11, 2014, 02:42:31 pm »

Thanks Martin...I did try renaming it, but I couldnt.

Rich

Jonty · « **Reply #57 on:** July 11, 2014, 03:32:07 pm »

Would one of these coupling housings make life easier? Cut the transmission housing off your motor, and this will connect the electric motor solidly to a standard propshaft.

http://www.cornwallmodelboats.co.uk/acatalog/coupling-housings.html

U-33 · « **Reply #58 on:** July 11, 2014, 04:12:48 pm »

Thanks for the link, Jonty...but I think I've won with it now. It fought me all the way, but I think I've managed to thrash it into submission now. Just having a smoke and a coke, then I'll give it a try in the bath.

I had to change the motor(yet again!)it now has a low drain 385 motor turning a 30mm 3 blade plastic prop, which I may change to a brass one later, the previous motor still didn't have enough grunt, but this one should have. I can hide it easily enough later on when the time comes. I also want to lower the rear deck section where the motor sits, it's a bit too high where it is.

Rich

Netleyned · « **Reply #59 on:** July 11, 2014, 04:44:24 pm »

Smoke and Coke

Guinness yesterday

What is going on in deepest darkest Sussex?

Ned

U-33 · « **Reply #60 on:** July 11, 2014, 07:06:29 pm »

I couldn't possibly divulge such sensitive information, Ned...

Rich

geoff p · « **Reply #61 on:** July 11, 2014, 07:27:30 pm »

Perhaps this sketch will help: the engine is "rigidly" fixed in a sub-frame that also carries the prop-shaft and its bearing, arranged so the assembly is balanced about tilt-bearings.

In use the propeller is constantly pushed up and down to maintain a surface-piercing mode - it may be more efficient but is certainly more spectacular - and in heavier seas this requires quite some effort from the helmsman.

The "tail" is often 15~20 feet long - I've seen big fishing boats with two or even three long-tails perhaps thirty feet long.

For going astern? Simples! Swing the whole assembly around until the prop is Forward, nearly touching the side of the boat, and give it some welly. If the off-centre thrust turns the boat the wrong-way, swing the tail round to the other side (with prop spinning wildly) high in the air, and hoping no-ones head gets in the way. In a packed harbour this is mind-boggling to observe.

Geoff
Thailand

U-33 · « **Reply #62 on:** July 11, 2014, 08:26:08 pm »

That's terrific Geoff, thanks ever so much for that...I wasn't far out with my idea of how to control the beast. I'll make a start tomorrow on the turn/tilt mechanism, fingers crossed it'll work sensibly. I have to work out how to stop any whip in the shaft, I'm thinking of bracing the shaft with brass rods soldered to the shaft tube and hooked up to the stern via ball joints. We shall see how that works out...

Thank you again, Geoff...very useful.

Rich

geoff p · « **Reply #63 on:** July 12, 2014, 12:20:18 am »

NO Rich. The motor/engine moves with the shaft and there is no universal joint between them.

If you have a solid coupling between motor and shaft, just one bearing down by the propeller should take the thrust and there won't be much whipping or whirling with a 4mm shaft at the speeds & power you're using.

On the huge-engined variants plying the Chayo Praya River for tourists in Bangkok, a simple flange on the inboard-end of the shaft bolts to the matching flange on the gearbox where the Cardan-shaft used to transmit power to a vehicle's wheels. The gearbox is normally jammed into "a" gear and left there - it is merely a convenient place to A/ mount the engine and B/ connect to the propeller-shaft.

And don't forget to remove the silencer - the noise is important to Asian people to keep the Heebie Jeebies away. The louder, the better. And if it's a real engine - remove the oil-control rings so as to make plenty of smoke as well - the Heebie Jeebies cough themselves to death in it so as to ensure a safe journey for you, the paying passenger.

Geoff,
Thailand.

vnkiwi · « **Reply #64 on:** July 12, 2014, 12:44:35 am »

Rich,
here are the rest of the 2 I photographed a week ago.
cheers
vnkiwi

vnkiwi · « **Reply #65 on:** July 12, 2014, 12:46:08 am »

And the last couple

geoff p · « **Reply #66 on:** July 12, 2014, 12:52:12 am »

Excellent photos, vnkiwi.

Geoff

vnkiwi · « **Reply #67 on:** July 12, 2014, 01:04:32 am »

Hi Geoff,
just love the wooden boats of SE Asia, and was a bit surprised to find these on the island, not seen them there before.
Not Thailand or the Philippines, but more common on the Mekong and canals of the mainland.
Here they not as power crazy or as a sport, as in Thailand, either.
Strictly work boats
cheers
vnkiwi

Martin (Admin) · « **Reply #68 on:** July 12, 2014, 01:17:56 am »

Better go like this when it's finished!

http://youtu.be/eHCKLwXq0e0

vnkiwi · « **Reply #69 on:** July 12, 2014, 01:24:45 am »

Yep, and note, no safety gear anywhere to be seen.

cheers
vnkiwi

derekwarner · « **Reply #70 on:** July 12, 2014, 03:17:20 am »

A different metal recycled version

...resourceful people the Vietnamese

..... Derek

geoff p · « **Reply #71 on:** July 12, 2014, 03:51:36 am »

Derek, we used to do similar as kids. I was brought up in Newbury, not far from the Greenham Common airbase, and occasionally we would acquire a fuel drop-tank for our sport on the Kennet and Avon Canal. Many a battle was fought to gain a "canoe."

Ah! Them were the days. There's probably laws against having such fun, now.

slug · « **Reply #72 on:** July 12, 2014, 07:12:55 am »

just went on to martins lead lots of detail how to make one of the long tail motor boats....a bit smaller than the power plant you maybe thinking of ....gives the general idea...tony

U-33 · « **Reply #73 on:** July 12, 2014, 08:03:07 am »

Gentlemen..thank you all so much for the pictures, they are great...a picture tells so much. I'm back to the drawing board now with the motor/shaft joint...I'd got it wrong. Now I know where I went wrong, I'll change the design.

I think I may plank the rear deck where the motor is fixed...I have some coffee stirrers laying about, might add a bit of realism to it.

Thank you all once more...very good of you.

Rich

U-33 · « **Reply #74 on:** July 12, 2014, 12:38:37 pm »

Ok boys, here we go...the motor is now mounted properly, solid coupling made and installed, and the whole lot now revolves through 45 degrees at least. The small brass arm you can see attached to the motor mount will be hooked up to a servo to give me steering control, and a small esc will control the motor. I just need to file a shallow groove in the transom, just a couple of mm or so, and the worst is done.

Any comments/criticisms gratefully received.

Rich

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Author Topic: Filipino Long Tail boat (Read 38961 times)