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)UJt Base lf you are at all doubtful of your ability to makea steam engine, give your confidence a boost bymaking the base first. lt is simple. straightforwardand i{ you get your teacher to check your workat each stage you are sure to make a good jobof it.The base is made of mild steel. This metal isinexpensive and strong yet because only a thingauge is used it is quite easy to bend.246
IIr bend
j@
E(!).o
line
E Sixholes 3.5dia.(csk. under where sholvn)
trf)lc\ll
'--1;
Nl'-
bend
6
line A-
c!
BASE PLATE
PLATE IT tZOqIAN4.S. SHEET
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tq
fy
Sto)
[drill2+
LH]FILLER PLUG500
oLO
ASSEMBLY WICK TUBES-> 4 2
0)Eoo.o
12 ' ,-drilllOo).=!co-o
C).EEI
.*]I
AIdrill 5 r c.rV,il '=Eo)!9B
(3 off)n
C)
Ecq)BASE
FUEL TANK 0.4(28s)TINPLATE SUPPLY PIPE 5(Y,;) O.D. BRASS TUBEFILLER &WICKTUBES 9 (7s') LDx I I %;YQD.BRASS FILLER PLUG 12(4")or 14dia. ALUM ALLOY
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Firebox
illTdial I .l o--------ffi
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c\
)ed
)np
*l'L
STRAP BRACKET
BOILER STRAP -+.IL4, 3(%)dalT-ITdrill 3'5 &csk under
TIE RODS (4off) *l.l*drill fourholeslo I
drill 2'5(2'65or No.37)thread ISO M3 (58A.)
ASSEMBLED& BRACKETIM
sS
lat
TrthreaA ISO M3
.J- bend line
@O)
dia.
\v\2s l ru I 25 a-Y-2slzs-l'lI n"no tit*(oSIDES(2off)
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centre drilldrill 6'8thread lSo M B(% B.d.E)
tl I tttl , rl
I.liiIlat ,1.'l]
Il
48dia(2off)
BOILER BARREL
EXHAUST PIPE( bend to shaPe after annealing)
centre drilldrill3'3SLIGHTLY countersink
thread ISOM6(%6 B.:
FILLER BUSH SECTIONSAFETY VALVE
SUPPLY&EXHAUSTSTEAM PIPES
pilot drill 3drilll0
FLANGEDBOILER END. 7 ;t;' ' t,'. "!t'/
---.-\:-\- -\
r\.-' drill 3(/J after flanging
4%Tffii18dMPPER TUBEB6[FrNERRNEL i6(]-2ffiEEEsFRoniZrr*nffin FiFzu9]IBON.TR ENDS SAFETY VALVE- fl(z;)A.F. HEX-EnnSS-STERU PIPES 3('d.)O.D. COPPER TUTJE
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FRAME SPLIT PATTERN DETAILS FULL SIZE
SECTION ON C.L.
oil hole drill 3 and csk.
drill5( 5.4or No.4)bore 6(/ql x2sdeep
thread ISO M6(Z;B.S.E) 6)drill5(5'4orNo.4) I ^\]"
drill3(7a)r i-+
Erfr
I
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1Fl,f lywla fi[:burrmarkthe i
Engine components 1screwdriver slot
threacl ISO M6 (k' B.S.F.)
CRANKPIN
centre drilldrill 3 8counterbore 4dia.x Tdeep
+drill3
+cut recess withspecial tool
FJSECTION THROUGHFLYWHEEL
4dia. x 7O long
CRANKSHAFTFLYWHEEL 38or35fl%)diaBD.MS.CRANKSIiAFT 4diaSlLVER S|EELCRANKPIN 3dia SILVER STEELBEARING 6 (2Jdia.BRASS
JO
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1Cbrasprolcyls idtr" off
Engine components 2
CYLINDERaffi
END
CYLINDER ENDCYLINDER PI-ATE
drill 8'7( 9.3 or LETTER U)reamer 9(%)dia.
CYLINDER
PLATE
4tti l'a slRetin I
CYLINDER 12%Idl.. BRASS CYL. PLATE 12x3kzx!'ilBRASS CYL. END l9(t")dia. BRASS
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Engine components 3drill 2'5( 2'65 or No 37)thread ISO M3(58A.)
@rrra@_SPRINGcFltftR7 c.52o PVoT
s0d)dia.x30
drill 2.5(2.65orNo37)threacr lso M3(58A.)
Il4r4franholr:be Itoillthejawl
@-=AUJUSTINGNUT --1.
c'bore 3(k)x+ oeep l.Idrill1.5SECTION B.B
SEGTION A.A3(al
'bore 6x3deep
1 Pivsquirlmeilslo fttl.nwirsl{wid llr
'I
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Engine components 4
s(rd) dia. x 70 tong( later cut to correct length)
drill 2.5 (2.65 or No.37)threacl ISO M5 (58.A.)
CONNECTINGRODdrill 2-8(3or No31) x14deepcounter oore 3 (Zd)x Soeep
t12 Il--7.",',gLryruq)Eo?fa'no
BIG END
3(%)dia. B. D.MS.t
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