despiece motor y conjunto.pdf
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Exploded View of Engine & Remote Needle Assembly
ITEM DESCRIPTION QUANTITY
1 CRANKCASE 1 OFF
2 CRANKCASE BEARING 1 OFF
3 BARREL 1 OFF
4 CYLINDER HEAD 1 OFF
5 BACKPLATE 1 OFF
6 CRANKSHAFT 1 OFF
7 CONROD 1 OFF
8 PISTON 1 OFF
9 GUDGEON PIN 1 OFF
10 PIN END BUTTON 1 OFF
11 LINER 1 OFF
12 CARBURETTOR BODY 1 OFF
13 CARBURETTOR ROTOR 1 OFF
14 BARREL SPACER 1 OFF
1 5 N IP PL E 1 OFF
16 NEEDLE VALVE BODY 1 OFF
DRG No.
WF46-0003
WF46-0004
WF46-0005
WF46-0006
WF46-0007
WF46-0008
WF46-0009
WF46-0010
WF46-0011
WF46-0013
WF46-0012
WF46-0014
WF46-0015
WF46-0016
WF46-0017
WF46-0018
Project
R22.5
100
7625
72
SIDE ELEVATION
38
28
PLAN VIEW
57
FRONT ELEVATION
Engine Specification
Bore - 21mm
Stroke - 18.4mm
RPM - 2,000-10,000
Prop - 11" x 6", 11" x 7"
Remote Needle Valve Assemblywith In-Flight Mixture Control ITEM DESCRIPTION
28
NEEDLE VALVE (O.S. OR CLONE PART)
19 2 OFF
20 1 OFF
21 1 OFF
22 M3 X 12 LONG SOCKET CAP HEAD SCREW 4 OFF
23 5 OFF
24 4 OFF
25
26
27
THRUST WASHER (O.S. OR CLONE PART) 1 OFF
PART No.
O.S. No. 24081970
O.S. No. 22020001
M3 X 20 LONG SOCKET CAP HEAD SCREW
M3 X 10 LONG C/SK SOCKET HEAD SCREW
DRIVE WASHER (O.S. OR CLONE PART) 1 OFF O.S. No. 24008000
2 OFFM3 NYLOC NUT
18 18 SWG X 15mm LONG PIANO WIRE P IN 2 OFF
1 OFF
29
30
1 OFFM2.5 X 5 LONG PAN HEAD SCREW (ST.STL)
2 OFFM3 X 16 LONG SOCKET SET SCREW
SERVO HORN (MODIFIED FUTABA) Fut No. FUTM20301 OFF31
ENGINE DIMENSIONS
QUANTITY
1 7 I N- FL IG HT M IX TU RE C ON TR OL D ISC 1 O FF W F4 6- 00 19
ASSEMBLED ENGINE
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R22.5
100
Title Scale:-
Drawing Number
Drawn
DateProjection
Sheet A3
First published in RCM&E magazine February / March 2012.
76
25
72
SIDE ELEVATION
38
28
1:1
WF46-0001
Engine General Arrangement
PLAN VIEW
57
FRONT ELEVATION
Motor Specification
Bore - 21mm
Stroke - 18.4mm
RPM - 2,000-10,000
Prop - 11" x 6", 11" x 7"
40
Remote Needle Valve Assembly
with In-Flight Mixture Contol
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Scale:-
Drawing
Number
Drawn
Date
Title
First published in RCM&E magazine February / March 2012.
Third Angle Projection
Project
Sheet Size:- A12:1
WF46-0002
Exploded View of
FIREFLY 46Exploded View of Engine & Remote Needle Assembly
3
4
1
2
11
5
6
7
8
9
10
24
29
22
17
30
23
31
27
13
14
12
15
25
23
22
19
20
21
ITEM DESCRIPTION QUANTITY
1 CRANKCASE 1 OFF
2 CRANKCASE BEARING 1 OFF
3 BARREL 1 OFF
4 CYLINDER HEAD 1 OFF
5 BACKPLATE 1 OFF
6 CRANKSHAFT 1 OFF
7 CONROD 1 OFF
8 PISTON 1 OFF
9 GUDGEON PIN 1 OFF
10 PIN END BUTTON 1 OFF
11 LINER 1 OFF
12 CARBURETTOR BODY 1 OFF
13 CARBURETTOR ROTOR 1 OFF
14 BARREL SPACER 1 OFF
15 NIPPLE 1 OFF
16 NEEDLE VALVE BODY 1 OFF
17 IN-FLIGHT MIXTURE CONTROL DI SC 1 OFF
28
NEEDLE VALVE (O.S OR CLONE PART)
19 2 OFF
20 1 OFF
21 1 OFF
22 M3 X 12 LONG SOCKET CAP HEAD SCREW 4 OFF
23 5 OFF
24 4 OFF
25
26
27
THRUST WASHER (O.S. OR CLONE PART) 1 OFF
DRG/PART No.
WF46-0003
WF46-0004
WF46-0005
WF46-0006
WF46-0007
WF46-0008
WF46-0009
WF46-0010
WF46-0011
WF46-0013
WF46-0012
WF46-0014
WF46-0015
WF46-0016
WF46-0017
WF46-0018
WF46-0019
O.S. No. 24081970
O.S No. 22020001
M3 X 20 LONG SOCKET CAP HEAD SCREW
M3 X 10 LONG C/SK SOCKET HEAD SCREW
DRIVE WASHER (O.S. OR CLONE PART) 1 OFF O.S No. 24008000
2 OFFM3 NYLOC NUT
26
18 1 8 SW G X 15m m LO NG PI AN O WI RE PI N 2 OF F
18
28
1 OFF
16
29
30
1 OFFM2.5 X 5 LONG PAN HEAD SCREW (ST.STL)
2 OFFM3 X 16 LONG SOCKET SET SCREW
SERVO HORN (MODIFIED FUTABA) Fut No. FUTM20301 OFF31
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View of Completed Crankcase
Title Scale:-
Drawing Number
Drawn
DateProjection
Sheet A3
First published in RCM&E magazine February / March 2012.
1:1
WF46-0003
Crankcase Details
37.5
37.
5
18.
75
61.95
19.35
6.15
6.15
30.
0
30.0
15
10.0
16.
60
32
34.00
25.00
23.45
25
20.00
28.
00
4.
75
18.
75
15
6.
75
R6
6.
15
8
8
Section on A-AFront Elevation
4.35
4 - Holes M3 x 8mm Deep
4 - Holes M3 x 7 Deep
28.2
Rear Elevation
5
Plan View
Material - Aluminium Alloy HE30 (6082)
View of Alternative Crankcase
(Without chamfering)
Chamfers OptionalChamfer Optional
General Tolerance
12.
25
AA
29.95
42.60
8.0
44.3
18.75 18.75
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20.0
Section on A-AFront Elevation
General Tolerance
A
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0004
Crankcase Bearing
16.60
32
30.095
A
Notes
1. 10mm intake hole to be bored with
the bearing pressed into crankcase
to ensure correct alignment.
2. This diameter to be a light press fit
inside crankcase.
Material - Bronze PB1
See Note 2.
12.
00
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40
Section on A-A
Front Elevation
General Tolerance
A
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
1:1
WF46-0006
Cylinder Head
40
A
Material - Aluminium Alloy HE30 (6082)
9.8
21.00
6.35
Completed
Cylinder Head
Plan View
1.4
1.51
.5
TYP
20.5
3.6
0
14
2mm Chamfer
1mm RadPlug thread 1/4"
32 UNEF
(O.S. #8 Plug)22.5
22.5
R10
14
0.6
1.8 Typ u/cut
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Section on A-A
General Tolerance
A
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
1:1
WF46-0007
Motor Backplate
A
Notes
1. This diameter is a close fit inside
crankcase to avoid air leaks2. Copper fuel feed pipes to be a press
fit into backplate
Material - Aluminium Alloy HE30 (6082)
15.5
Plan View
1.5mm Chamfer
4 - Holes drill through
13.
4
9.65
20
57
28.
15
see
note
1
25
5.8
for copper fuel feed
pipes (See note 2.)
Machined flat for
piston clearance
28
14
Elevation on Rear of Plate
2.5
R22.5
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Section on A-A
General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
1:1
WF46-0008
Crankshaft
Material - Carbon Steel EN8M (212M36)
Side Elevation
1.5mm Chamfer
Machined flat for
prop driver
End View
74.15
411
Ream
to5.4
7
21
27.8
34
32.15
7.8
8
.5
12 5.6
26
0.5mm Rad
9.
00
Thread 1/4" 28 TPI UNF
6.3
6
R25
40.15
1.5mm Chamfer
8 A
A
27.75
18.7
5
Completed Crankshaft
9.2
5
View on Arrow B
12.
000
B
3.3
0.2
0.2
R4
14.25
5.5
00
Big End Pin(silver steel)
Big End Pin
(see detail)
0.25mm Chamfer
Drill and ream to suit big
end pin detailed below
16.2
Raised Area
Raised Area
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Section on A-A
General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0009
Conrod
Material - H15 Duraluminium (2014)
A
4.
43
2.1
5
3.
05
=
= 6.
04
32.80
R4.5
8
A
R4
4.54
5.000
8.
1
Completed Conrod
5.500
2.9
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Section on A-A
General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0010
Piston
Material - Cast Iron
Underside
A
A
Completed Piston
21.00*
18.
5
17
19.00
6
5.
00
18.
5
8.
35
12
16.
5
*Note
Make Liner prior to making Piston. Outside
Diameter to be lapped to size to match liner
19.5
R6
1mm Dia Hole for
future Gudgeon
Pin removal
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Section on A-A
General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0011
Gudgeon Pin
Material - Silver Steel
A
A
Completed Gudgeon Pin
5.000 18.5
End Elevation
2.
5
3
Chamfer 0.25mm
Notes-1. The Gudgeon pin diameter should be made to a minimal
clearance to match the piston.
A 5mm Diameter Engineering Dowel pin may be
substituted for this item just cut/ grind length to suit.
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General Tolerance
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View of Completed Liner
Title Scale:-
Drawing Number
Drawn
DateProjection
Sheet A3
First published in RCM&E magazine February / March 2012.
1:1
WF46-0013
Cylinder Liner
Section on A-AFront Elevation
Plan View
Material - Carbon Steel EN8M (212M36)
A
35.
25
28.1
0.
75
11.0
TSFR
11.0
TSFR
A
21.000
Sectional Elevation on B-B
Outside Line Port Development
78.54 (25mm Dia)
Circumference
34.
5
Underside of Liner Lip
11.39 15.285
Bottom edge
11.3913.94 13.94
6.298 6.298
V t i l t i
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Section on A-AFront Elevation
General Tolerance
A
Material - Aluminium alloy HE30 (6082) 3/4" (19mm) Hex Bar
Completed Carburettor Body
Plan View
2 - Holes Drill & Tap M3
Title Scale:-
Drawing Number
Drawn
DateProjection
Sheet A3
First published in RCM&E magazine February / March 2012.
2:1
WF46-0014
Carburettor Body
10
30.
75
5.
5
1
6
8
1.
25
5
13.5
17.2
5
8
8
4
5.8
5
View on Arrow C
12.
8
10.0
5.7
1 - Holes Drill & Tap M6
B B
Section on B-B
6.8
C
A
1- Hole Drill & Tap
M2.5 x 6 Deep
1.5
Venturi angle cut using a
Countersink Drill
R2
18.7
5
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Section on A-A
Front Elevation
General Tolerance
A
Material - Aluminium Alloy HE30 (6082)
Completed Carb Spacer
A
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0016
Carb Barrel Spacer
10.
5
1.
2
Spacer Arrangement
Futaba Servo Arm
Spacer
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Plan View
Front Elevation
General Tolerance
Material - Brass Hex Stock
Completed Nipple
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0017
Nipple
19
4.2
5
9.5
A
/F
M6 Thread
9.5
5
2.7
5
3.5
2.35
4.25
2.2
5
Remove Sharp Corners
10.97
ref
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Section on A-AGeneral Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0018
Needle Valve Body
Material - Brass
A
A Completed Body
18.0
11.
5
2
9
27
7.44.5
11 4
6.
8
5.
75
8.8
18
23
4.6
8
11.
5
3.2*
1.2
4.
5
Thread M4 x 0.5p
be a light press fit for
copper feed pipes
Notes- To be suitable for O.S Needle No.24081970
Copper feed pipes to
be a light press fit
1.
2
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General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0019
Mixture Control Disc
Material - Aluminium Alloy HE30 (6082)
A
Completed Disc
8.5
1.3
11.
6
6.
8
1 Hole drill to
suit for clevis
R10
ASection on A-A
8.
2
A
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Section on A-A
General Tolerance
Scale:-
Drawing Number
Drawn
Date
Title
Projection
Sheet A4
First published in RCM&E magazine February / March 2012.
2:1
WF46-0020
Prop Driver
Material - Aluminium
Front Elevation
A
A
Completed Driver
7.54
9.
15
22.
75
3.
375
5.04 Key depth
17.
8
Key
2.94
Serrated front face
40 off 0.3mm deep
Rear Elevation
9.15
11.
5
R10
6
8
0.5
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