Introduction: Liquid Fuel Pump for RC Cars: Simple Principal Yet Elaborate! (Guts Complete, Housing Being Made! - Part 1 of 2)

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About: Always trying to help someone, though my own skills are limited, i always hope i can help where possible :) . If we all get roughly under 100 years to live a Lifetime, if we are lucky to reach that far, then i…

Firstly i must thank everyone who has already made a liquid pump like this here on instructables because that is where i got the idea from to make my own, so a mojor thanks to all who have already made the simple versions of this, if it wasn't for you, i wouldn't had been able to make this monstrosity !

Oh and this is my 1st Instructable so go easy on me, naturally constructive criticism is welcomed but if your just here to merely prod & belittle, then i suggest you keep yourself to yourself !

I really tired to make this a very simple design but because i had modeled this around the motor & plate from the cd-rom drive, it turned out to be getting slightly complicated here and there!

But never-the-less, here are the Guts to my RC Nitro Car Fuel-Tank Fill & Empty Fuel Pump !

Call This instructable my Fuel Fill & Empty Pump (GUTS!) Part-1 !!!

It all works as advertised, the fins move clockwise with Button 1 and they move anti-clockwise when released Button 1 and pressed Button 2, so i know that all the electrics work !

 This is however an experimental design and it will also matter greatly on the housing and tubes' placement so watch this space for i am currently working on the housing !

-WARNING-

(This is intended Not to be Offensive OR Rude in anyway, Constructive Criticisms Welcomed here...)

ANYONE PAINTING: WITH AEROSOL SPRAY-PAINT MUST ALWAYS USE IN A WELL VENTILATED AREA AND ALSO USE A FACE-MASK AS EXTRA PROTECTION - ALSO ADD A GOOD DOSE OF COMMON~SENSE OR IF UNDERAGE YOU MUST ALWAYS HAVE AN ADULT WITH YOU TO SUPERVISE AS MUCH SAFETY PRECAUTIONS ARE BEING MET IN THE STRICTEST OF CIRCUMSTANCES. - I ACCEPT NO RESPONSIBILITY FOR ANYONE NOT FOLLOWING THE GENERAL RULES PRINTED ON ANY SPRAY-PAINT-CANS.

ANYONE USING POWER~TOOLS: MUST ALWAYS USE IN A WELL VENTILATED AREA AND ALSO USE A FACE-MASK AND EYE PROTECTION AS EXTRA PROTECTION - ALSO ADD A GOOD DOSE OF COMMON~SENSEOR IF UNDERAGE YOU MUST ALWAYS HAVE AN ADULT WITH YOU TO SUPERVISE AS MUCH SAFETY PRECAUTIONS ARE BEING MET IN THE STRICTEST OF CIRCUMSTANCES. - I ACCEPT NO RESPONSIBILITY FOR ANYONE NOT FOLLOWING THE GENERAL RULES SUPPLIED WITH THEIR POWER-TOOLS.

ANYONE USING ANY GLUE OF ANY~KIND: MUST ALWAYS USE IN A WELL VENTILATED AREA AND ALSO USE A FACE-MASK AS EXTRA PROTECTION - ALSO ADD A GOOD DOSE OF COMMON~SENSEOR IF UNDERAGE YOU MUST ALWAYS HAVE AN ADULT WITH YOU TO SUPERVISE AS MUCH SAFETY PRECAUTIONS ARE BEING MET IN THE STRICTEST OF CIRCUMSTANCES. - I ACCEPT NO RESPONSIBILITY FOR ANYONE NOT FOLLOWING THE GENERAL RULES SUPPLIED WITH ANY GLUE IN ANYONE'S POSSESSION.

Basically USE a Good-Supply of Common-Sense but if you're Running-Low, have a Friend or Three come and help you out !!!

Step 1: Firstly - Unscrew and Take Apart Your Old Cd-rom Drive

(Warning - ONLY DO THIS IF YOU ACTUALLY WANT TO INHERIT UPTO 3 MOTORS and various other small components!!!


i have also bought a few mini battery-powered strobe-light kits to cannibalize ! (http://www.audiomate.co.uk/proddetail.php?prod=G011KP)

Here is the finished 'guts' of the liquid pump (THIS INSTRUCTABLE IS a work-in-progress and is currently being worked-on BUT this part, THE PUMP's guts is complete, the HOUSING is being made as this is being read! )

Ingredients: {Some Bought Stuff & Some stuff a had lying around...}

NB (i): I use a lot of acrylic/plexiglass both flat and tube so most of my designs will have this built in/around.
NB (ii): The wire links are for 25' (25-Feet) of cable length, you can easily search ebay for smaller lengths but if you decide to buy the 25' length, know that you'll have enough to almost last a LIFETIME, lol.

- old busted cd-rom (only the cd tray had broken beyond repair) {'Pulled THREE MOTORS FROM IT !!!'}
- 3mm Thick acrylic/plexiglass (I will refer to this as ACRYLIC from here-on...)
- 22 AWG Black wire
- 22 AWG Red wire
- LIQUID-RUBBER
- Metal Strips From Red-Bull or Soft-Drink Can (Non-Magnetic)
- Double Sided Tape (UK Based websites by the way)
- 2 Switches ('Push-ON' - 'Release-OFF')
- Heatshrink (4mm)
- Strong Epoxy Resin (2 Part VERY VERY STRONG GLUE) or just use a hot glue gun, whatever!
- Battery Box (For TWO 9 volt 'square' batteries with individual connectors - NO Wires)
- Cable Braid (9mm UV Blue) You can use whatever color suits you ! {Note - 9mm is a bit too loose, 6-8mm would be better, talking from hind-sight!}
- Helping Hands with Magnifier (i use TWO of these as they are almost cheap, £5 each ish)
- A Technical Tinkering Mind !
- Moderate to Plenty of Time on your hands!

Tools i used:
- Dremel {Or similar Rotary tool}
- Various small hand tools, eg, files, needle-files, sanding block fitted with GLASS-PAPER, hacksaw, coping saw, engineers scriber, drill press attachment for dremel (makes a dremel into a mini bench-drill)
- Hobby Bandsaw (Bought this because i CANNOT - for-the-love-of-life CUT IN A STRAIGHT-LINE !!! {lol} )
- Drill bits
- Heavy-Duty Scissors
- Wire Strippers
- Needle-Nose Pliers
- Tweezers
- Solder
- Soldering Iron (My iron is a gas operated one, but a simple cheap alternative can also be used)
- Liquid-Rubber aka Liquid Electrical Tape aka Plasti-Dip {i opted for the 750ml CLEAR plasti-dip liquid rubber Incl.FREE delivery... - AWESOME-MAN, LIKE, TOTALLY !!!} - Sorry folks, am a TMNT Fan (Teenage Mutant Ninja Turtles) lol
- Rubber/Non-Latex Gloves - Whatever...
- FASMASK - Latex-similar type LIQUID Masking-Tape !!!!!

Next Step = Isolating & Removing the Motor & Plate Assembly from Old CD-ROM drive...

Step 2: Isolating & Removing the Motor & Plate Assembly From Old CD-ROM Drive

Ok Here i have marked the plate in red permanent marker (fine-tip) and ready for cutting.... I should mention that i use a lot of 'Guesstimation' and usually use a metal ruler often to check roughly if everything will fit into the design i have in my head...

Next Step = Use the dremel to cut the plate (i used stone cutting discs, cheaply bought in those 400 pieces assortment kit pack for £10, i bought two of them so got a nice 800 piece assorted accessories pack nice and cheap when it was on sale from maplin !)

Step 3:

More markings...

OK OK this step is before the cutting, still!

the marked area grid label 'CUT OUT' is for the 'Fin' or 'Blade' placements to be glued to the shaft, i will be using the metal from soft drinks cans, washed carefully, dried and then cut to the size that will fit the Spiral shaft In the pic here...

Step 4:


Step 5:


Step 6:


Step 7:


Step 8:


Step 9:


Step 10:

I really couldn't think of how to integrate two circuits but using just one battery pack at 1st, i really couldn't wrap my head around it so i doodled away trying to make it a very simple circuit, times two.

The 1st switch button would supply power to the motor the most logical way, by meaning, have the - battery terminal go to the - motor terminal and the + terminal of the battery going to the switch the in turn to the + terminal of the motor - so that the motor will turn clockwise.

The 2nd Switch button would be wired up as opposite to the 1st switch so that the motor, in turn, will spin anti-clockwise, hence giving my pump the ability to Fill Or Empty and liquid i intend to use in it !

Again, for the love-of-life i couldn't think of how to wire it all up so that this pump only used one 9 volt battery so i opted for a battery holder that held two 9 volt batteries and had 2 pairs of un-wired - un-soldered contacts !