Despiece motor y conjunto.pdf

8/13/2019 Despiece motor y conjunto.pdf

1/23

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


2/23


3/23


4/23

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


5/23

Scale:-

Drawing

Number

Drawn

Date

Title


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


6/23

View of Completed Crankcase

Title Scale:-

Drawing Number

Drawn

DateProjection

Sheet A3


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


7/23

20.0


General Tolerance

A

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


8/23


9/23

40

Section on A-A

Front Elevation

General Tolerance

A

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


1:1

WF46-0006

Cylinder Head

40

A


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


10/23

Section on A-A

General Tolerance

A

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


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


11/23

Section on A-A

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


12/23

Section on A-A

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


13/23

Section on A-A

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


14/23

Section on A-A

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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.


15/23

General Tolerance


16/23

View of Completed Liner

Title Scale:-

Drawing Number

Drawn

DateProjection

Sheet A3


1:1

WF46-0013

Cylinder Liner


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


17/23


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


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


18/23


19/23

Section on A-A

Front Elevation

General Tolerance

A


Completed Carb Spacer

A

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


2:1

WF46-0016

Carb Barrel Spacer

10.

5

1.

2

Spacer Arrangement

Futaba Servo Arm

Spacer


20/23

Plan View

Front Elevation

General Tolerance

Material - Brass Hex Stock

Completed Nipple

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


21/23

Section on A-AGeneral Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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


22/23

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


2:1

WF46-0019

Mixture Control Disc


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


23/23

Section on A-A

General Tolerance

Scale:-

Drawing Number

Drawn

Date

Title

Projection

Sheet A4


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

Despiece motor y conjunto.pdf

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