Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Working Vessels => Topic started by: edible_engine on January 10, 2007, 11:44:13 pm
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hi i want to make a tug about 4ft in lenth i would like single prop lots of power and a run time of about 90mins oh
and need a bit of speed the thing needs to be made out of wood i need to make it cheap under about 50ish
i have servos transmitter recever i have a 25 and a 15amp esc i have got a graupnear bow thruster (i duno how yah spell it lol)
it must be 2 cha and use sla batterys ive been told that fan motors work well any idears
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hi i just found a motor on ebay it looks like it has loads of tork to drive a big prop any one use one of thees i could use 2 batters and use 12 and 24 volt fore the speed control
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=011&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=320068305824&rd=1&rd=1
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Be carefull with the fan motor not all are reversable, scrap yard prices about a fiver
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That particular motors off an electric scooter, runs on 24v and the starting current current is kinda fierceas it can slap an 'Electronize' ESc into submission, requiring a replacement. They can supply a suitable ESC with external relays that are much more suitable with a motor of this type. I use one in my TID and since fitting the new version of ESC have had no problems.
Pushers like Egrete would appear to suit your purposes as they are quick to build being rather slab sided, and will hold a decent battery. For a bow thruster i would forget the graupner type and fit on that Poll and MiniSteve use, home made but costs very little to make and has bags of power.
Single prop in a big nozzle should still be ok, but Egrete is twin screw really, but who would know...unless you have a radio controlled diver in your pond?
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i,m not going to have a bow thruster now because i would need to get a new radio and i don't like using the rudder on full trim to make it work
i want the price to be very low what sort of prop could the scooter motor spin like how easy is it to make a prop with a hacksaw and a blow lamp and a bit of brass and what sis prop shaft would i need 4 a big prop ?
will a 5mm do ?
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It's a joke right ;D ???
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wouldnt recommend making your own prop unless you have the tools to balance and set the pitch, you need to balance it and get the pich right.
in other words BIG job, would be cheaper to buy a ready made prop.
Jay
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i have a balancer and a pillar drill Ive made them be fore by cutting a disc out of mettle cutting 4 slits in it bolting it on the shaft and twist each blade to the pitch i need i have this on a small boat it works very well but i think i need sumthing more substantial
oh and ime 14 so i have more time than money i will have a go at any thing
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It is a joke ::) ;D
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This is great stuff ;D ;D
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He's probably a 43 year old policeman posing as a 14 year old in the hope that he'll catch some of us weird boatties....
Mind you, the exuberance of youth knows no bounds, and who is to say he couldn't make a prop'. It is obvious he spent more time in the workshops than in the english class.
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why don't you believe ime 14 i am Lol sorry about the spelling do you want a pic of me or sumthing Lol making a prop ime going to try to get one made in school they have sum PC controlled cutting thing that engraves stuff and cuts it. what sort of size prop do i need fore a 4ft tug ? ime going to make a prop and try sum of the motors i got to see if they get hot and how much water they move
and Ive added a pic of me in my back garden casting aluminum
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EE can you please cut out the LOL it's getting a bit irritating oh and bye the way if you look at the bottom of the screen there is a spellchecker available so what excuse have you now!!!!!!!
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i dunno what your problem is is it because you are all in your 50s ?
to be honest this forum is the worst Ive been in you all go OTT about my spelling
so what if i cant spell ime just trying to speak to pepole with the same intrest what is your problem ?
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Edible engine - remember this - one of the richest men in this world cannot spell, cannot write and yet he owns trains, planes, boats and he has done a lot more than the majority of us on this forum and being able to spell did that improve his chances of getting on in the world - I think not.
one of the greatest musicians in this world couldnt read or write a note of music - and look where he is in this world.
So take no notice of these half wits that pull you apart about not being able to spell because you are the type of person this hobby needs. You are young, enthusiastic and willing to give it a go.
For those who pull you apart about your spelling on this Forum you are actually doing something that they wish they could do - and that is producing a model for yourself from nothing. So what I say to those who criticise is take the plank out of their own eye, before they try to take the spelk out of yours.
KEEP ON BUILDING MY FRIEND and take no notice of these dictionary halfwits.
Aye
BLUEBIRD
John E
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thanks BLUEBIRD
is polyester resin OK to seal the hull and not expoy epoxy has more flex i think and it is a 50/50mix
and what is the largest brass prop you can purchase Ive seen 70mm ones is this as big as it gets ?
just looks in the shead the strip of brass Ive got it so small to make a prop
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hi edible_engine
you should be able to get props above 100mm as i have a 90mm fitted to my tug (brakengarth) and that was off the shelf ,i think it's a raboche(please pick me up on the correct spelling as the spell checker can't work it out).if your building a pusher then twin's would be better and the radiator fans from Austin metro's work well in both directions and have a realistic torque and speed of about 850rpm on 12v i fitted twin's in my first scratch build through 50mm three bladed props in plant pot corts worked fine plenty of pull
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thanks
the boat in the pic is like what i wanted but i cudend get plans do you no wher i culd get plans of this and how long is it ?
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she is called SILEX and her sister ship THORAX i built her from very basic plans in a copy of Lecco international (a tug enthusiasts magazine)which i found whilst trawling through the net ,saw her and liked her.she was built to my own unorthodox scale ,about 3' long but has since moved to another quay.
All made from mdf ribs,keel and deck, balsa sheet sides covered with colour (acrylic) mixed fiberglass and tissue and a 40a gel battery for power and ballast and boy did she need it as well as the 10lb's of lead in the aft to put the props in the water.
I may have the original mag somewhere in the shed if you want some pages scanning .
daz
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At least his posts are about Model Boats..
Peter
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is polyester resin OK to seal the hull - yes polyester resin is fine for the amount of time that our models are actually in the water. If you look through this forum there are quite comprehensive threads on the use of poly resins and expoy resins
epoxy has more flex i think and it is a 50/50mix - yes this is right to a degree but, when you mention 50/50 epoxies you are dealing with epoxies with additives in that we tend to use for bonding and the other 50/50 epoxies which I can think of with a 50/50 mix is the specialised stuff which the Electricity Board use and also pipe manufacturers use and it isnt really suited for our purpose in modelling - its too thick and difficult to use.
and what is the largest brass prop you can purchase Ive seen 70mm ones is this as big as it gets ? The largest - I believe someone has already answered this. Have a quick look on ebay I noticed there were some 100mm brass props for sale on there - however, when I get me brain switched on (after charging it) somewhere I have drawings for making a jig up to make your own prop blades.
'just looks in the shead the strip of brass Ive got it so small to make a prop' themethod you use to make a prop is I presume is to make a prop out of a circle the method I was going to show is making individual blades and centre boss for this you will need the facility of either a pillar drill or lathe & to be able to silver solder.
Hope is this of some help.
Aye
JOHN E
bluebird
(away to get me brain charged)
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DickyD - with great respect Sir, if you are so concerned about spelling/spell checkers/peoples' images you my friend need to disembark from this forum and perhaps relocate yourself on a Forum entitled 'The do's and dont's of the English Language' . Least said the better ::)
Aye
JOHN E
BLUEBIRD
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At least his posts are about Model Boats..
Peter
Changed your tone since you posted on "Re: 12volt batterys slead lead " ;)
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DickyD - with great respect Sir, if you are so concerned about spelling/spell checkers/peoples' images you my friend need to disembark from this forum and perhaps relocate yourself on a Forum entitled 'The do's and dont's of the English Language' . Least said the better ::)
Aye
JOHN E
BLUEBIRD
The Forum should be entitled 'The dos and don'ts of the English Language'
Least said the better . ;)
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hey Dicky or should I say (DictionaryD) hooo yee man am off to bild a mogel of the ceee4th conrer like hinney
at least a daint av to luk at dickynary d bild a mogel.
have a nice day marra ;D ;D ;D :D ::)
aye
john e
bluebird
;D ;D ;D
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DickyD - with great respect Sir, if you are so concerned about spelling/spell checkers/peoples' images you my friend need to disembark from this forum and perhaps relocate yourself on a Forum entitled 'The do's and dont's of the English Language' . Least said the better ::)
Aye
JOHN E
BLUEBIRD
The Forum should be entitled 'The dos and don'ts of the English Language'
Least said the better . ;)
You're right, least said the better. If you are going to pick holes in other peoples' spelling and grammar though, you should at least get it right yourself. BLUEBIRD used people in the plural form, so peoples' is correct. Also, in this context, do's and don'ts is perfectly good English and absolutely correct from both a spelling and grammar point of view, so I'd say that was two up to BLUEBIRD. People in glass houses, and all that.
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Should have gone to spec savers, check dont's and don'ts.
One to me.
Mind where you throw that stone in your other hand. ;D
Can we call a halt to this now please before it gets out of hand,
Richard ;)
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The Forum should be entitled 'The dos and don'ts of the English Language'
Least said the better . ;)
Try writing out 100 times do's and don'ts, then go and stand in the corner. When I want advice on this subject, it looks like it's BLUEBIRD I'll have to consult, and certainly not you.
On a more serious note, in common with most people on this forum, I couldn't care less about minor spelling and grammatical errors. What we post are for the most part only light hearted jottings after all, it isn't an English exam, but let's remember what started this exchange, a series of posts from two new members that were so bad they were almost unintelligible. That wasn't bad spelling and grammar, that was deliberate provocation, or at least that's what it turned into. OK, so most of us here are middle aged or older, but we do have some standards, and newcomers should respect them.
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Hi edible engine
can you send me a PM with your email address because I have several drawings to email to you showing different methods of propellor construction - I have been trying to download the drawings onto the forum but I still dont know how to 'downsize' them and keep them within the limits so you can make out the detail.
Aye
John E
BLUEBIRD
Always Remember
Usquequaque adepto vestri do's quod dont's in vox locus
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anmo i hear what you say i think you have been resnoble the spelling i
the firs posts were crap i have to admit but you did got a bit ott about it
can we put an end to this please.
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'just looks in the shed the strip of brass Ive got it so small to make a prop' themethod you use to make a prop is I presume is to make a prop out of a circle the method I was going to show is making individual blades and centre boss for this you will need the facility of either a pillar drill or lathe & to be able to silver solder.
(away to get me brain charged)
i have a pillar drill and i can use it to turn mettle what is the difference between silver solder and solder silver solder is used on model boilers the method i have used before i like because you can have a relay low pitch prop and so it don't load the motor much
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anmo i hear what you say i think you have been resnoble the spelling i
the firs posts were crap i have to admit but you did got a bit ott about it
can we put an end to this please.
Well OK son. here's an A grade GCSE in English. You take this, and we'll let the matter drop.
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thanks port side fore the prop jig plan what solder shuld i use i might make it out of alumineum and use alumineum solder i might make the hole boat out of it ime going to see how much i have got
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I was a bit portside last night after having too much of the old whisky but today I am on even keel and could be slightly amidships.
If you are making it out of brass which would be the preferred material - it should be silver solder.
If you are working with aluminium then there is a specialised solder to be used for this. When you say you are going to make the whole boat out of it, I presume you are going to make your boat from aluminium - good luck with that.
Aye
JOHN E
BLUEBIRD
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About soldering the aluminum you an get kits in B&Q about the aluminum hull i have 3 sheets of aluminum 1.2mm 17inch wide and 32inch long
i would make a rather square boat any one make a boat out off mettle i have seen a very nice boat here. http://users.eastlink.ca./~jbentley/Tug2.html
Model Steam Tug Pg.2
But a hull this nice is out of my depth.
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EE go for it lad. I made brass circle propellors many (35?) years ago when I converted the Titan tug to (Mamod) steam. I just soft soldered the disc on to a brass shaft that happened to fit in the prop tube. With more power, silver solder is the way to go, and if you can cast aluminium I'm sure you can silver solder. You could start with a brass hexagon nut for the boss, which will give you three (or six!) flats to hacksaw slots for the blades in. Cut from corney to corner of the flats which should give a root pitch of about 45 derrees and bend until the motor is revving right. An aluminium hull sounds fun. I think there was a Nigerian pusher tug called "Conakry" - it might even have been a Vic Smeed plan. It had a square bow and stern, quite like the tug in your avatar and the one in the picture on this thread. I've never tried the Halfords ally welding stuff, but if the boat is quite large I'd fold a flange on the sides, and pop rivet the bottom on, with some car underseal or other black akky spread on to seal the joint. You should be able to borrow a pop riveter and scrounge a couple of handfuls of rivets. Remember that the bow angle can be a lot steeper than the stern, cod head and mackerel tail pushes the water out of the way of the boat and lets it back onto the props and rudders. Make a couple of card or paper models first - you could always put them up on the site and we'll all throw helpful or otherwise suggestions!!
Good luck.
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Hi EE,
My spelling is better than yours.
My Grammer is better than yours
But I can't post pictures on any forum
I can't set a video recorder
I can't do much with a mobile phone
I can't download the pictures from my Digi Camera
etc etc etc
You remind me of myself when I was your age, I couldn't spell very well then, but thought nothing of going into the loft and producing a model boat or aeroplane, without help from my dad.
As already said. Keep up the modelling. It's better than standing around on street corners as a lot of youngsters do today.
Bob
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Ive made a start I'm slowly making a templates out of card i just took to bits an old sewing machine and its got a nice set of cogs in it and some nice bushing's and a shaft to make a prop shaft out of. Ive made a prop cut 4 slots in to one of them brass inserts that go into the coplings ans soldered 4 blades in to that the prop is in the shed and its to wet to get it. :-[