Douglas

Since it is not possible to supply big end assembly kits for customers to fit to Douglas crankshafts please return your crankshaft to the factory. We have shown below all the bolted up crankshafts under the common reference "DB" and all the pressed up crankshafts under the reference "DP". The design of the "DP" replacement bearings is a significant improvement over the original Douglas design and has proven to be most successful.

 

50cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1968-69 Ciao

-

DV11

-

SE231

115

115

1968-69 Vespino

-

DV12

-

SE231

115

115

 

90cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1963-66 Model 90

-

DV9

-

SE222

317

RLS8

1965-69 Model 90cc Super Sprint

-

DV9

-

-

317

R120

 

125cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1951-54

Model "G"

5354

DV

-

SE32

1806 (FBC)

1806 (FBC)

1954-55

GL2

18602M

DV1

-

SE146

M25N

M25N

1955-59

42.L2, 92.L2

037987

DV2

-

SE146

M25N

M25N

1959-62

152.L2

023792

DV4

-

SE193

M25N

M25N

1963

"125"

-

DV7

-

SE208

M25N

M25N

1967-69

VMA1

-

DV9

-

-

317

R120

 

150 & 160cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1955-62

"Gransports"

-

DV.GS

-

SE146

M25N

M25N

1957-59

"Clubman"

-

DV3

-

SE146

M25N

M25N

1960-61

"New 150"

-

DV5

-

-

M25N

M25N

1961-65

"Sportique", 150GT, GL

089289

DV6

-

-

M25N

M25N

1962-65

"GS-160"

-

DV8

-

-

M25N

M25N

1966

Sprint 150

-

DV6

-

-

M25N

R125E

 

180cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1966 180 Super Sports

-

DV10

-

-

M25N

R125E

 

350cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1926-30 A29, B29, L3, H3, B31, B32

-

DB

K52

SE148

130DR

1934-35 Cotswold, Comet & Buldog

-

DB

K52

SE148

130DR

1935-37 Endeavour & Blue Chief

8636

DB

K52

SE148

130DR

1946-51 T35, MK3, MK4, MK5

26048

DP

K53

SE31

130DR

26057

1951-57 MKV

26048

DP

K53

SE31

130DR

26057

1950-54 Plus Series "80" & "90"

Polished

DP+

K53

SE31

130DR

130

38259

1955-59 "Draganfly"

S26048

DPD

K53

SE31

130DR

34168DF (split)

 

500 & 600cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1930-34 A32, E29, K, M.

-

DBT

-

SE29

130DR

1930-35 T6, S6

-

DBT

-

SE147

130DR

1936-39 "Aero"

8636

DB

K52

SE148

130DR

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