1959 Triumph Thunderbird

ABOVE: This 1959 Triumph Thunderbird has more than a healthy amount of patina. In fact, if it wasn't all in one piece, it might be a basket case. Sorry I couldn't do better on a photo, but it was the only one I could find that I had the rights to use. If you have a '59 T-Bird, please send us some pictures.

T-BIRD - BY THE NUMBERS
For the 1959 model year, all continued the model designation of "6T" and had an engine prefix of 6T as well. Engine and Frame Numbers ran from 020581 to 029362, a span of 8,781 units, built from October 9, 1958 to February 9, 1959, which was a production run of only 4 months exactly.

ENGINE UPGRADES
The prior 3-piece crankshaft was replaced by a stronger, lighter one-piece forged steel crank with a bolt-on central flywheel. The vacuum SU carburetor was replaced with an Amal Monobloc Type 376/210. A Lucas RM15 alternator was installed to increase output over the RM14 unit it replaced.

GEARBOX IMPROVEMENTS
From engine #023941, the gearshift camplate was induction-hardened to reduce wear. From engine #024029, the clutch sprocket was also induction-hardened. An oil level indicator was added to the inner gearbox cover.

1959 TRIUMPH THUNDERBIRD CYCLE PARTS
The front brake cam lever was modified to improve its braking abilities, and those thus-modified were marked with an "X" on the lever. US models now came with a safety strap on the seat. This was the alt year for the single downtube frame (aptly nicknamed "Whip Iron" for it's tendency to flex so much as to be dangerous. The last Triumph 650 with a Whip Iron frame was a 1959 Triumph Thunderbird, Engine & Frame #029362.

1959 TRIUMPH THUNDERBIRD PAINT COMBOS
The standard paint colors for the 1959 Triumph Thunderbird were as follows: The petrol (fuel) tank was Charcoal Gray. The tank badge had white lettering on a black background. The mudguards (fenders) were also Charcoal Gray with a Black center strip, lined in White. The front fork covers/headlight nacelle were solid Charcoal Gray. And the oil tank and battery box were Gloss Black, along with all the other painted parts on the bike. The one exception is the front hub, which was painted an Eggshell Black.

1959 Triumph Thunderbird SPECIFICATIONS

Engine type

Displacement

Bore & Stroke

Compression

Carburetor

Ignition

Engine output

Primary drive

Primary sprockets

Clutch

Gearbox

Ratios, overall:

1st, bottom

2nd

3rd

4th, top

Final drive

Final drive sprockets

Frame Type

Suspension, front

Suspension, rear

Brake, front

Brake, rear

Tire, front

Tire, rear

Wheelbase

Seat Height

Ground Clearance

Fuel capacity

Dry weight

Air-cooled OHV vertical twin, non-unit

649cc / 40.0 ci

71mm X 82mm / 2.79" X 3.23"

8.5:1 (US & export); 7.0:1 (UK)

1-Amal Monobloc

Lucas magneto

34 bhp @ 6500 rpm

1/2" X .335" X 5/16" chain, 70 links

24T X 43T

Multi-plate, wet

4-speed constant mesh, right foot shift


11.9:1

8.25:1

5.81:1

4.88

5/8" X .400" X 3/8" chain, 101 links

18T X 46T

Brazed lug, rigid

Telescopic fork, hydraulic damping

Swing arm, 2 Girling dampers

8" SLS drum

7" SLS drum

3.25" X 19"

3.50" X 19"

55.75" / 141 cm

31" / 77.5 cm

5" / 12.7 cm

3 Imp gal (US); 4 Imp gal (UK & export)

395 lbs / 179 kg


MORE THUNDERBIRD PAGES:
Triumph 6T Thunderbird
.....Pre-Unit Thunderbird
.....1950
.....1951
.....1952
.....1953
.....1954
.....1955
.....1956
.....1957
.....1958
.....1959
.....1960
.....Unit-Construction Triumph Thunderbird
.....1963
MORE TRIUMPHS:
Triumph T120 & T140 Bonneville
Triumph TR6
Triumph TR7
Triumph T110 & T110 Tiger
Triumph 6T Thunderbird
Triumph 5T Speed Twin
Triumph T150 & T160 Trident
Triumph X-75 Hurricane

Check out these TRIUMPH BOOKS




Vintage Motorcycle Calendar - Classic Motorcycle Calendar - Calendars 2018 - 2019 Wall Calendars - Motorcycle Calendar - Classic British Motorbikes 16 Month Wall Calendar by Avonside


Triumph Motorcycles: The art of the motorcycle


The Complete Book of Classic and Modern Triumph Motorcycles 1937-Today (Complete Book Series)


Triumph Motorcycles: From Speed-Twin to Bonneville


Triumph Bonneville and TR6 Motorcycle Restoration Guide: 1956-83


British Motorcycles Triumph (Little Books)


Triumph Motorcycles in America


McQueen's Motorcycles: Racing and Riding with the King of Cool


Triumph Motorcycle Restoration


Illustrated Triumph Motorcycles Buyer's Guide: From 1945 Through the Latest Models (Illustrated Buyer's Guide)


Tales of Triumph Motorcycles and the Meriden Factory


Hinckley Triumphs: The First Generation (Crowood Motoclassic)


For more like these, visit our

TRIUMPH BOOK STORE





Travelling With Mr Turner





Please visit our
MOTORCYCLE BOOK STORE


Take a tour of our site...

HOME PAGE
Triumph Motorcycles
.....Bonneville
.....Tiger
.....Trophy
.....TR6
.....TR7
.....Trident
.....X-75 Hurricane
.....6T Thunderbird
.....5T Speed Twin
.....Daytona
.....Twenty-One
.....3T 350 Twins
BSA Motorcycles
.....A65
.....A10
.....A7
.....Gold Star
.....Bantam
.....Rocket 3
.....B50
Norton Motorcycles
.....Commando
.....Atlas
.....Dominator
.....Model 7
.....Manx
.....Navigator
AMC-Associated Motor Cycles
Matchless-AJS Motorcycles
.....G3
.....G9
.....G12
.....G80
Royal Enfield Motorcycles
.....Interceptor
.....Bullet
Ariel Motorcycles
.....Square Four
.....Red Hunter
.....Cyclone
Vincent Motorcycles
.....Black Shadow
.....Rapide
.....Comet
.....Egli-Vincent
Velocette Motorcycles
.....KSS
.....KTT
.....LE
.....MAC
.....Thruxton
.....Venom
.....LE
Rickman Motorcycles
Japanese Motorcycles
.....Honda
.....Kawasaki
.....Suzuki
.....Yamaha
Cafe Racers
....Triumph Cafe Racers
.....Norton Cafe Racers
.....Other Cafe Racers
Choppers & Bobbers
.....Choppers
.....Triumph Choppers
.....BSA Choppers
.....Rat Bikes
Classic Racing Motorcycles

Classic Motorcycle Events
.....Auctions
.....Shows
.....Rides
Classic Motorcycle Restoration
Classic Motorcycle Shops
Classic Motorcycle Clubs
Send us Pictures of YOUR BIKE
YOUR BIKE Pictures

HOME PAGE
.....About Us
.....Site Map
.....CONTACT US
.....Please visit our BLOG
.....Subscribe to our FREE e-zine BRIT IRON
.....BRIT IRON E-zine Back Issues

Visit our STORES
.....Motorcycle Books
.....Motorcycle Magazines
.....Motorcycle Calendars
.....Motorcycle Accessories
..........Motorcycle Helmets
..........Motorcycle Rain Suits
..........Motorcycle Locks & Security
..........Motorcycle T-Shirts
..........Motorcycle Diecast Models
..........GoPro Cameras
.....Motorcycle Parts
..........Motorcycle Tires
..........Motorcycle Chains
..........Motorcycle Batteries
..........Motorcycle Handlebars
.....Motorcycle Tools
..........Whitworth Tools
..........Tire Tools
..........Chain Tools

Crazy about cars, too? Check out our sister site:
www.American-Muscle-Cars.net

Back to top - 1959 Triumph Thunderbird
Last updated 10/14/18

Learn how to BUILD YOUR OWN WEBSITE, like I did.

October Marks our
8th ANNIVERSARY!

CBM launched on 10/19/2008


BREAKING NEWS:

BSA to Lauch in India First 



NEW PAGE:
Vintage Motorcycle Pictures



2019
 CALENDARS ARE HERE!



Visit our new
Motorcycle Store

WHITWORTH WRENCH & SOCKET SET



Please visit our
MOTORCYCLE BOOK STORE


Subscribe to your favorite
MOTORCYCLE MAGAZINES



BIKES FOR SALE!
Check out our
FREE
Classifed Ads



NEW SECTIONS:

Motorcycle Racing


THIS MONTH'S FEATURE PAGE:
Norton Commando Production Racer

NEW PAGES
added this month:

Norton Commando SS
1977 Triumph Sliver Jubilee
* 1979 Triumph T140D Bonneville Special
* Motorcycle Racing
* 1964 Matchless G3C
* 1955 BSA Gold Star
* AJS Motorcycles
* Helmet Features 2018
* AJS Motorcycles
* 1961 AJS Model 31
* 1959 AJS Model 16
* 1927 AJS Model H4
* 1959 AJS Model 31 CSR
* 1946 AJS Model 18
* 1964 AJS Model 16
* Norton Commando Hi-Rider
* 1953 AJS Model 18
* 1950 AJS 7R Boy Racer
Enjoy. More coming soon...