Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Navy - Military - Battleships: => Topic started by: rathikrishna on January 23, 2011, 04:57:18 am
-
Good morning Ladies and Gentlemen...after joining in MBMH, i started enjoying my life with my crafts..may be, because of my living situation, it giving me an ample of satisfaction and enjoyment..but as i started to play with my crafts, the head aches also followed...the ever first fear was the motor blowout..so i asked to my brother for some help..he got angry over me...so i found solution for it..reworking..so, after making a speed controller, the motor, battery related probles rectified...then i came up with a new problem..was leaves and debris along with weeds in water areas...it stranded on my props..and only way to recover it was to swim..so wet dress..lots of mud..roughend hair...and comments from natives..and above all a clean recipe for the "FESTIVAL OF BEATS" from Maaajee....her hands are too hot on me...and nails on cheeks..and possible roughest words in all known languages...ohh..
-
but how can i stop playing with my crafts..? if so, better to die... so again i found a solution..by buying a plot for myself..i bought a plot, that contains a canal area and a nice swimming pool all near to my first grand home...so after cleaning it all with laboured people, its clear...but still a fear governs me,after i faced an incident...one day my battery pack discharged fully, because it was poorly charged...and i pumped up my craft in full speed...
-
so i got job once more...so that was the time , that my blood pressure reached to high..to find a solution for it...so i decide to make a recovery craft...so i started to get some ideas for it...and always it was in my mind...as days passed..one day i saw a posting here in MBMH, from our Respected Administrator Mr Martin,was about a craft, was named EDDA FONNE, that was a craft, with ample of complicated electronics and mechanics....
-
nd one of the most interesting aspect was its working crane...all it was powered by hydraulics...and surely that craft was a HEMAN among all...a stunningly looking craft in all respects...it was a primer in to my brian to ignite the charge of the idea of a recovery craft ...
so i decided to make one..but soon i realised that, actualy i need not a crane, instead a manipulator on booms as we can see on excavators...
-
then i burned my brain alots for it...at last i solved it..all in ever simplest possible manner...
first of all i praise our respected Administrator, Mr Martin, for the postings about EDDA FONNE....because it was an explosion to me...as idea...
-
then i took a intense study about a backhoe loader , and found one thing..the total movements were activated by the movements of pistons attached to each booms...so it was simple...
-
but still, i was thinking about a wireless controlling system for my craft...i do not have any computerised radio system, with 18 or 20 channels...no hydraulic pumps...no powerfull motors...no lathe works...and alone...so , for testing i used some toy rc systems...then, keeping in mind, my need,as 6 channels, i converted a toy rc system in to RADIO MATRIX MODE, to get a 6 channel by same carrier wave...so i made a simple audio coded PWM, system in my RC system...after some trial and errors method it started work flawlessly...so i got the control system...and i choose 4 power transistorised output system,in final stage of my transmiter...i do not know the exact range of transmission from TX,but i tested it with my Pachu,my student boy, as i fixed the reciever on his bicycle,and a motor, then send him on...after reaching a culvert, he called me in phone..there is a booth near to culvert...
so the culvert is situated 2.5 kms from my grand home...then it worked without any trouble...so i got enough confidence with it...
-
so i made the RRV for me...RRV..? yes means Rathi's Recovery Vehicle...hi...hi...it must be capable of, holding a craft, and must be big enough to withstand all torque forces, and must be capable to manipulate a stranded craft...and yes can rotate in 360 degree continuously....!!!!...so i started my work...
1, as usual i started with expanded polysterene...c1,c2,c3,c4 shows the constrution of hull...
-
and here....
-
after that i found some gearboxes from scraped toys for me...
-
i choose many gear boxes for to select....
by keeping a whole idea in mind i started to work for my great rrv...C7 shows the basic fixation of the rotator gear box to a platform,all from 4mm
thick foam board...
-
C8 shows the gearbox for main lower boom...
-
C9 shows its attachment...all booms are 1mm thick foam board...
-
C10 shows the upper boom..pivoted just like a excavator...
-
then i feixed a compound independent gear box, behind the main gear boxes as C11...
-
C12 shows the boom pivot and actuating piston...the piston is a ball point pen body, and the piston is nothing but a brass rod, and its tip was flattened by hammering and a hole was drilled to fix on the cross rod of upper boom....
-
as booms finished, it was the time to make cabin....all from thick drawing papers...
-
then i fixed two identical pinch rollers just under the main platform for a great and smooth circling...as in C14...
-
the fig 16 shows the boom actuating gearbox setups...
-
HOW THE BOOMS WORKS...? SEE THE vidEO HERE.....http://www.youtube.com/watch?v=dKARkuEtxi8
-
yes, the working principle behind the working booms are simple..the lower boom is simply attached to the main gear box, as you can see in fig C8..so when the motor start to turn..the boom also go up and down....
-
then the upper boom is actuated by a piston ,is a ball point pen, with a brass rod in it,and a fishing line is tied just to the inside tip of the brass rod...as you can see in C31, and C32...and C33...and after guiding the fishing line through hidden panels of booms itsels,it reaches at the tips of the gear box shafts, as you can see in fig C36...and i tied all fishing line on to the gear shafts...so when the gear start to rotate, it also winds up the fishing line attached to it...so after some turns the fishing line start to get tension, then pulls the brass rod...the brass rod is attached to cross bars of each boom and manipulator...so it also will be actuated...so simple...
-
sorry Rathi........ :((
Could I suggest that if a new member joined Mayhem O0.......today & read all of you posts.... %% ..I suspect that the new member [she/he] ....would not believe what they see & read...........Derek %)
-
after workout i checked the booms with weight..it can easily hold 1 Kgs in hang...
so after thourough check ups, i made the whole exterior...all from foam board...C24, C25 shows the bodywork...i added a loads of talcum powder in to deep orange paint, to get a matt texture...
-
hen i turned to propultion...the main gear box is from a toy car, but with a reworked motor for 7.2 volts...basiccaly it was a 3 volt motor...you can see the gear box in fig C37...
-
the propeler took from an old scraped grapix card of a PC...and added a nozzle from a PVC pipe...so doing well...from C 26, to C 29 you can see the propultion mechanism...i fixed a tiny eyed net around it to avoid stranding.....
-
the bow thrust pump is made out of foam board and driven by a reworked motor for 9 volts...a take up wheel from a VCR stands for the gear system of the thrust pump...C38 shows this in detail...
-
the fig C36 also shows the simple setups and a simple 7.2 volts 200 ma battery for total manipulator controls...
-
while,C37 shows the 7.2 volts battery pack, and relay based toy RC , all Matrixised, to work in same freequency carrier...so you can see here i do not have used any antennas on to craft...but still i fixed a piece of thin wire as an antenna....for safety at long distances....
-
ou can see the waves before in MATRIX, and after in MATRIX...(scope 2)
-
and original...
-
Friends...now i am not ok..i got a cold last week and i ate two more icecreams...so it came even more gruesome...by last eve i womited a little...so Papa took me, and he gave me a bottle of dextrose IV...along with ample of medicines..and he told me to take care as it was a begining of a broncho pneumonia...so Papa locked all of my cameras, as Papa knows my nature..and to avoid a trip to pool side...hi..hi...,as my parents need to go to a marriage party...so i jumped off the bed , and took my cameras from car, and shooted this video...but it was at night, and wasnt in to a clear one...now i know my Papa and Maa never allow me to go to pool or riverside...if my Maa know my effort , she will slice me with anything that she can get...hi...hi...
-
so see a mission video here...http://www.youtube.com/watch?v=fC2178JHWfw
-
so i am posting this video for you, and i will post a good video later...at pool or at riverside...so apologise for this poor video...
-
and one of the main head ache with this craft that i need my both hands to controll it...but now i have to hld the camera with one hand...and Pachu is not enough to hold the camera, or to control the craft...so its too hard to shoot...hi...hi...
-
o once again..i will post a good video soon...ok...lets see this...its mission accomplished.....you can see here the basic layout of pistons...its too simple..a ball point pen body...and a brass rod....
-
and the manipulator piston..is nothing but a refill tube and a brass rod...you can see the fishing line attached to it...for pulling...
-
when fully loaded it was only 800 grams include all battery packs....
-
Awesome Rathu!
What type of paint is that and how is it applied, (brush, spray)?
Martin
-
Good morning Derekwarner_decoy ..my postings are not to show anything but only to share my ideas to you all, why...? yes so i will get many ideas from you all....thank you...
-
HAAAAIII...Sir, you there....Good Morning...here i do not have any high quality paints...simply its a enamel based paint, (I hope latex paint in US temrs), is only in to 50 Ml, means 1/4 of a dollar, (45 Rs is around a Dollar) and i added a lots of talcum powder in it...so i got a shiny textured surface....so nice to see...hi...hi...
-
and all it was applied by a soft brush with hands...i do not have any airbrushes with me, or a sprayer..my brother owes all but he never allow to use me...i will buy it all machines after my resignation...and i have one more request to you, Respected Administrator, Mr Martin, Sir, i was trying to mail you by last days , but server here is not comply with yahoo or gmail..i am getting a dialogue box, when i tries to log in...so i will send you a mail as on my way to office..now i am in leave as i am suffering from a cold and fever...apologise....
-
PM sent. :-)
-
Sir..E mail..?
-
hi, it simply gets better keep on building and showing your amazing work hope you are better soon.
davidj
-
thank you Dav...
-
Rathi you are amazing! Your devotion is so inspiring. (your secrets are safe with us - hi hi)
Get well soon, Tony.
-
Hi Rachu!
I must admit, I was confused at just what "expanded polysterene" was ... In the States it's called 'Styrofoam' ... I take it You are cutting it to shape with a knife or saw of some sort?
If, by chance, You're heating up a wire and "cutting" it PLEASE be careful of the fumes!! they are poisonous! I suppose if You breath enough, they could kill You outright, but, possibly worse, it accumulates in the body and can effect the brain! (kinda like asbestos does to the lungs) I think that's what caused my mom's untimely demise ... she had the habit of standing over the stove, and heating up a wire to "cut" the Styrofoam ... (I think she was using it as bases for flower arrangements she used to do) her distant memory was OK, but her short term memory (as in ten years and less) was completely scrambled ... I'm not sure if it was early onset of "oldtimer's" but from what I've heard, breathing those fumes sure didn't help! :(( A simple fix would have been to do the "heated 'cutting'" in a better ventilated area ...
Oh, GET WELL SOON!!! :-)) :-)) :-))
-
thank you all....and its not a Styrofoam..but thermocol, as e call it all we can see in TV and refrigerator packages...
-
Oh ... OK ... Nevermind ... :-)
-
Thermocol
Is there any difference between Styrofoam & Thermocol?
They are both trade names for Polystyrene (PS)
Yes, Thermocol is a plastic. It's polystyrene.
Polystyrene is a polymer made from the monomer styrene, a liquid hydrocarbon that is commercially manufactured from petroleum. At room temperature, polystyrene is normally a solid thermoplastic, but can be melted at higher temperature for molding or extrusion, then resolidified. Styrene is an aromatic monomer, and polystyrene is an aromatic polymer.
What is the Composition of Thermacol?
Styrene or PhCH=CH2 where Ph is the phenyl ring.
Since it is a polymer of styrene it is also called polystyrene or Styrofoam.
Description of Thermocol
http://en.wikipedia.org/wiki/Thermocol
Manufacturers
Niraj Thermocols
Snce 1995, Niraj Thermocols is a leading manufacturer and exporter of thermocole products like thermocol sheet, thermocol pacakging, thermocole disposable. Our eco-friendly products are used as a packaging material and offers secure packaging.We offer thermocol sheets which are commonly known by the trade name Styrofoam. Our quality-prone products are used in insulation of building structures and as molded packing material for cushioning fragile items. The range of thermocol sheets is available in various thickness and densities to suit varied applications. These thermocol sheets can also be availed in regular and TF grades as per customers requirements.
Prakash Packaging, Ghaziabad
We are one of the leading manufacturers, suppliers and exporters of thermocol packaging material. Our competitive pricing, superior quality has enabled us to carve a niche for ourselves in the national market.
-
Styrofoam has no bubble in nature and exact similar found in thermocol Plate or other kitchenware.
Thermocols are bubble ball in nature and the ball bindness f loose (in low density thermocol) then it breaks very easily.
However, the oil based paint got thinner and eat thermocol. Then how you paint? Is it normal paint or specially made paint.
Generally, pant contain
1. Thinner
2. N C Lacquer
3. The base color/paint/mixpaint.
4. The material (french chalk).
5. other solvent like turpentine oil.
Now, N C Lacquer is the main binder. You added talcom powder, but can add french chalk. It will be more fine finish and cost effective I think.
=====================================================
Why not make your own airbrush?
Get an blower (your smoke generator like or aquarium blower. Keep paint container at low and use mosquito spray (atomizer) like mechanism.
LORD VISWAKARMA is with you. You surely make it and the performance would be far better. You can use dextrose/saline pipe for this. :embarrassed:
=====================================================
Keep your health at first priority to make more model. We are waiting for getting well. %)
GOD BLESS YOU.
-
(your secrets are safe with us - hi hi)...Sir you are wrong...in real sense...there is no secrets...i am making all crafts from the advice of my brother Mr Krishna...its a sad thing...all you may know him by his contributions...but no he is still in bed...cant move properly...got a spinal injury...but now he is almost ok...and coming back in to life...so i am still hanging at home, for him as my parents are old...but my time is running out as i have to rejoin in my duty...but i am too thankfull to you all for the great inspiration,for my postings...because all of my postings are from his brain...i was acting as a machine for his commands...so i always saves a copy of web pages accessed here in word form, and shows him at home...so now he has a good improve ment...as he sees the positive responses from you all...it may be gods determination, about me, to look after him...his wife , left him alone after his accident...i dont know how can a woman leave hers pair in desperate situation...because i am also a woman...so gad may bless us all...please pray for us...and thanks for the great inspiration for us....especially to me...and please pray god to give me even more power by mind and body, to with hold this gruelling situation...its a request.....
-
Friends thanks for the great advices...but here in my native, thermocol and Styrofoam aren't same...a Styrofoam is , a structure with a high density in nature...more stiff, but can bend a lots...but thermocol is solid, in to blocks, while the Styrofoam, is in to rolled sheets...here Styrofoam mainly used in seat industry...for cars...while thermocol is used for packaging...so i do not know exact details about these as none of the dealers are not known its property...but still i goes for thermocol...a sheet in to 3 foot long and 1.5 foot wide...and hope one day i will get some balsa kits...from some where...hi..hi...thanks for the discussion...and never for get to advice, me, about a material, that can be used instead of thermocol...
-
Hey Kalyan..will you give me some guidance o paint on thermocol,ith much ease..? and a way to scrap out excess putty from model...? any idea...?
-
Hi Rachu,
You seem to have a very nice material to use there. I have used the white ridged packaging, (what we call styrofoam here or foam polystyrene), which is ridged and can buy it in quite large blocks of varying densities. Some is nice to work with, while some just crumbles into beads, not good at all.
My foamy corsair is made from a similar material even though they call it eps. Have to use a very light weight flexible filler to get rid of the pattern in the surface on the planes, but I have plated my paddle steamer with card and paper and then painted with acrylic (water based) paints. Just can't get the finish that you get on your boats.
Our best wishes and prayers to your brother and yourself for a very speedy recovery from your respective illnesses.
Take care
kiwi
-
Hai Kiwi..."Have to use a very light weight flexible filler" will you tell me more about this..? what kind of material is that...? please...
-
(your secrets are safe with us - hi hi)...Sir you are wrong...
Rathi, it refers to your night video at the pool as in your post no. 31.
Wishing you and your brother well, regards, Tony.
-
Hi Rachu,
"Foam Putty" branded 'Subterrain' that is intended for building model rail-road scenery eg rocky outcrops and is very light.
It is stirable, thinnable and ideal for use with foam and can be sanded and carved.
kiwi
-
Thank you Kiwi...i will try to get it from here...
-
How are You feeling, Rachu??? :-)
-
head ache..chest pain..hi..hi..but no time to sit up at home...ommmm....
-
Rathrishna
I have been following your builds with delight and amazement, some of your solutions are brillant and remind me of the way things were after the war and in the 50s and early
60's when modelers had to make all of thier own fittings. Carry on Lass you win my vote.
Freebooter
-
Thank you Jimmy..now i am graced, because i came to kno that my works inspired you all...thank you...i hope i can expect more ideas from you all...have a nice day...