pitsco Fluid Power Car User manual

Fluid
Power Car
60070 V0113
User Guide
Cautionary and Warning Statements
• Thiskitisdesignedandintendedforeducationalpurposesonly.
• Useonlyunderthedirectsupervisionofanadultwhohasreadand
understoodtheinstructionsprovidedinthisuserguide.
• Readwarningsonpackagingandinmanualcarefully.
• Alwaysexercisecautionwhenusingsharptools.

2 Fluid Power Car User Guide 60070 V0113
Principles at Work
Hydraulics
Ahydraulicsystemisonethatusesuidasaforce.Theprinciplebehind
ahydraulicsystemissimple:Forceappliedatonepointistransmittedto
anotherpointusingauid.
Pushingononeendofasyringelledwithwater(ahydraulicsystem)
createsanequalandoppositereactionontheothersyringe.Onthe
FluidPowerCar,asyringeisconnectedbyatubelledwithwatertoa
mechanicalpartoftherobot.Forceiswhatcausestheparttomove.
Linear to Rotational Motion
TheFluidPowerCarisanexampleofreciprocallinearmotionbeing
convertedintorotarymotion.Thesyringebeingpulledbackandforth–
thereciprocallinearmotion–isconvertedtorotarymotion–thewheels–
thankstotwoone-waybearingsandarack-and-piniongeartrain.
Thecar’sgeartrainfeaturesatopandbottomrackontheaxlewiththe
one-waybearings,sothelinearmotionmovesinonedirectionnomatter
whichdirectionthesyringeplungergoes.
One-Way Bearing
Operation
One-Way Bearing Operation
in Fluid Power Car
Engaged
Position
(shaft turns
with gear)
Disengaged
Position
(shaft does
not turn with
gear)
Shaft
rotates due
to rotation
of the far
side gear
Shaft
rotates due
to rotation
of the near
side gear
Gear
Bearing roller
One-way bearing
Axle
Gear rack
Far side gear
Far side bearing
Near side bearing
Near side gear

Fluid Power Car User Guide 60070 V0113 3
Materials Included
• Bagoflaser-cutparts
• CDHub&BearingSet(onlyhubsandscrewswillbeused)
• 2metalone-waybearings
• 4–1/4"x1/2"nylonspacers
• 4–3/8"x5/8"nylonspacers
• 4–1"screws
• 2–3/8"screws
• 1"woodendowel
• 4nylonaxlebushings
• 2axles
• 2widerubberbands
• 12ccsyringe
• 6ccsyringe
• Flexibletubing
• Pieceofthread
Items Required (not included)
• SmallPhillipsscrewdriver
• Sturdyscissorsorwirecutters
• Whiteglue(suchasHDBondII)orCAglue
• Fileoremerysandpaper/cloth
• Smallpliers(optional)
• Cupofwater
Building the Car
1. Openthebagoflaser-cutparts.Pop
outanyinteriorpiecesthatneed
removed.
2. Usingwirecutterstrimotwoedges
ofthe6ccsyringeplungerasshown.
3. Placethesyringeplungerintothe
slotsofthePart4withthetwocircles
onit(theyshouldfaceawayfrom
theplunger).Makesurethetrimmed
edgesoftheplungerarefacingup
anddown,notsidetoside.
Step 2

4 Fluid Power Car User Guide 60070 V0113
4. PlacePart5overtheplunger.
5. PlacePart3ontopofthatsothetwosawedgesofParts3and4face
eachother.Insertthe3/8"screwsfromthesidewiththetwocircles.
Thisisthegeartrainassembly.
6. Usingsandpaperorale,leoanyroughedgesontheendsofthe
axles.
7. Placeaone-waybearingontheaxleandnoticehowitwillspininonly
onedirectionandthatatinyarrowonthesideindicatesthis.Remove
thebearing.
8. LaythetwoPart6sonaatsurfaceandcenterthebearingsinside
these.Makesurebothbearingsspininthesamedirection.
9. PlaceonePart7overaPart6.PickthisupandplacetheotherPart6on
theothersidesoPart7issandwichedbetweentheothertwopieces.
Makesuretokeepthebearingsspinninginthesamedirection.
10. Insertanaxlethroughthebearingsandcenterit.PlaceaPart7oneach
sideofthebearingassembly.
Steps 3-5
3
4
5
Completed assembly
3/8"
screws
Steps 7-10
One-way
bearing
6
7
7
7
Side view
of completed assembly
Axle

Fluid Power Car User Guide 60070 V0113 5
11. TakePart1andinsertthefrontaxlebearingassemblyintothelarge
holetowardthenoseofthecar.Besurethebearingsarepositionedso
thattheyspinforward.
12. PlacePart2ontheothersideoftheaxleasshown.
13. Holdingthepartstogether,inserta5/8"nylonspacerbetweenthe
holesunderandabovethefrontaxle.Tightenthesewitha1"screw,
makingsuretoputtheminfromthePart1withthecircles.Tip: This
maybeeasiertodoifyouholdthespacerwithasmallpairofpliers.
14.Takethegeartrainassemblyandplaceitintothecarbodysothetop
gearrackisoveronegear(Part6)andthebottomgearrackisunder
theothergear.Makesurethesyringelipsareinsertedintotheslotson
theParts1and2.
15. Inserttheremainingtwo5/8"nylonspacersintotheremainingcircled
holesofthePart1.Securethemwiththe1"screws.
Steps 11-15
1
2
1" screws
3/8" x 5/8"
nylon spacers
3/8" x 5/8"
nylon spacers
1" screws