Topic: Springer Tugs (Read 1396609 times)

Bridkid · « **Reply #825 on:** January 09, 2008, 12:14:06 pm »

My Club (Bridlington) are planning a 'Bring-a-Springer' weekend this year that will also double as a Club 500 Championship too.
Watch this space!.........all comers will be welcome.
Cheers,
Ian.

norry · « **Reply #826 on:** January 09, 2008, 03:29:07 pm »

...Hi Duncan...Arrow5...

OK...You win the prize...Send me your Address by Private Mail & I will post the prize to you...

...Best Regards...Norry...

Arrow5 · « **Reply #827 on:** January 09, 2008, 03:37:33 pm »

No thanks Norrie...I wouldnt drink the stuff >:( but the idea is sound. A sort-of bow thruster put in longways ?

chingdevil · « **Reply #828 on:** January 09, 2008, 09:39:20 pm »

Arrow

Westborne sell them, the nozzle at the rear of the engine is movable I think that is what gives you the steering, very much like the vector nozzle on the rear of a jet fighter aircraft engine. This is the one I am thinking of getting and putting in a springer, must not let SWMBO know.

Brian

portside II · « **Reply #829 on:** January 09, 2008, 11:42:58 pm »

right then two scotish springer hulls have landed in goole and many thanks to Norry for his time and patience ,although the fluttering of paper with the queens picture on did help

.
One of the hulls is for me and the other will be off to Hull for Arthur (another goole member) ,once the workshop is sorted and i can get to the bench then i can make a start , maybe a loading shovel for the front

.
daz

Arrow5 · « **Reply #830 on:** January 10, 2008, 07:46:06 am »

Hi Ching, don't you think that the Springer hull shape would be ideal for a pair of "torpedo tube" straight through water-jets instead of the Hamilton type with a bend to suck from the bottom of the hull ? A ram-jet. Portside; Norry will have no bother exchanging the English money but may only get 95p to the £ :'(

chingdevil · « **Reply #831 on:** January 10, 2008, 10:38:18 am »

Hi Arrow

Torpedo tube type water jets, do you mean bow thrusters mounted parallel to the hull. I am not sure bow thrusters can be run for a long time without overheating, would be interesting to see. I was thinking of the Hamilton type as these were the only ones I kne about.

Brian

Arrow5 · « **Reply #832 on:** January 10, 2008, 12:59:36 pm »

Yep , like bow thrusters but custom made, probably need 90degree gear set. Straight pipe from under the waterline at bow and out at the curve of the stern. Two simple rudders. Low tech answer since the Springer hull is sort-of Hamilton tube shape.

chingdevil · « **Reply #833 on:** January 10, 2008, 04:00:56 pm »

Arrow
That is an interesting thought, I think getting the impellers would be the hardest part the pipework and gear set would be relatively easy.

Brian

Arrow5 · « **Reply #834 on:** January 10, 2008, 04:17:42 pm »

Ah, hadnt thought beyond a Kort prop in a long tube, slight taper towards outlet. I suppose a true multi-blade turbine would be unobtainable except at high cost. Any pics of a stripped commercial (model sized) one on the web?

norry · « **Reply #835 on:** January 10, 2008, 09:55:35 pm »

...Hi Guys...

Take a look at Stevie Clubbs home made Bow Thruster in the Tugs & Towing section...
A bigger one of these or 2 & steer by thrust on one side or the other or both to go straight...
...Best Regards...Norry...

chingdevil · « **Reply #836 on:** January 10, 2008, 11:43:57 pm »

Norry
What is Stevie Clubbs forum name??

Brian

norry · « **Reply #837 on:** January 11, 2008, 10:00:26 am »

Stevies Forum Name is ministeve

chingdevil · « **Reply #838 on:** January 11, 2008, 10:16:41 am »

Thanks Norry

toesupwa · « **Reply #839 on:** January 12, 2008, 10:13:12 pm »

Toesup boat werks update..

I've added some of the internal bulkheads and the 'keel' to strenghten the bottom and support the ends of the drives. There are also towing bitt supports added.

Next i need to put the other bulkhead / support in for the superstructure and make up the towing bitts and epoxy them to the ply supports.

Big Ada · « **Reply #840 on:** January 13, 2008, 04:43:21 pm »

Hi Norry,
I searched for Ministeves Bow thruster in Tugs & Towing, is it a full shot of it or just a tantalising glimpse as I must have missed it.

Regards,

Len.

norry · « **Reply #841 on:** January 13, 2008, 06:03:21 pm »

There is a posting called Bow Thruster by RUSSELL there are pictures of ministeves & polls bow thrusters in there...

Arrow5 · « **Reply #842 on:** January 14, 2008, 09:35:39 am »

Yep I found it, thanks Norry. Ada ; it looks like a tube with a motor and normal mount strapped to the tube at an angle that lets the shaft go into the tube at a shallow angle. The prop must be at an angle in the tube. Maybe a flex-drive cable could get the prop vertical in the tube, but a support and bearing would be needed, more complication for a bow-thruster but maye essential for the jet-drive idea.

ministeve · « **Reply #843 on:** January 14, 2008, 05:07:39 pm »

hi Len hears some of the photos i v'e got the thruster is just a 5"shaft shortend to 2.5" to 3" and a 40mm surface speedboat prop ground down on an angle they work great no need to get the angle lower really but you don't need a fast 540 motor if fact the slower the better otherwise it will cavitate hope you like pics

Steve

Mr Andy · « **Reply #844 on:** January 14, 2008, 06:25:37 pm »

I'm not planning on fitting a bow thruster on anything just yet, but tell me would a motor off an old remote control car do, the cheap and nasty type?

Andy. :)

Marks Model Bits · « **Reply #845 on:** January 14, 2008, 08:00:11 pm »

Hi Andy, fitted a 540 motor out of a rc car in mine and Hannahs and had no problems. it is too powerful but you can never have too much power and isn't that what esc's are for!!!

Mark.

ministeve · « **Reply #846 on:** January 14, 2008, 08:41:40 pm »

absolutely mark can never too much power but can always ease off with the thumbs. NOT THAT I AM LIKELY TO

Arrow5 · « **Reply #847 on:** January 14, 2008, 09:03:04 pm »

Have we lost the thread here ? The idea was to use a bow-thruster-like tube running fore and aft as a propulsion method, not a bow thruster. Any ideas Ministeve, would they produce a "long kort" or would the friction and other hydro forces negate the thrust ? Torpedo tubes open at both ends for forward thrust is about the easiest way to describe the idea.

Tugboat Andy · « **Reply #848 on:** January 15, 2008, 03:05:04 am »

Arrow - I was thinking about the Caterpillar Drives from the Hunt for Red October.

Check Rc Groups for this: Build Log - Corvette VISBY . Might answer some questions.

Arrow5 · « **Reply #849 on:** January 15, 2008, 08:02:01 am »

Caterpillar Drives....just a work of friction ::) Thanks Andy, I have been looking at that thread but only the shapes, must go back a study the engineering....EDIT; yes Andy that is the approach but a straight torpedo tube from front to back. How to get a simple drive into a straight pipe without gears if possible. Flexy-drive cable? Didnt say whether the two props shown were used on the one shaft.

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Author Topic: Springer Tugs (Read 1396609 times)

chingdevil

chingdevil

chingdevil

chingdevil

chingdevil

Big Ada

Mr Andy

Tugboat Andy