Home Street bikes 2-Stroke Yamaha YDS3
Yamaha YDS3

My collection started with this YDS3, framenr. Y23-29731. It is a 1966 model and I had it registered in 1980. So I am playing around with two-strokes already more than 25 years!

 

At that time I did not know anything about the Yamaha 2-stroke history but as I started searching for parts, the curiosity grew. Please realise that at that time many dealers and importers still had parts for these bikes, gathering dust on their shelves. So I went "Dutch" and gathered many parts from friendly Yamaha dealers all over Europe for my first bikes. Oh, if I had known then what I know now! But that counts for many more people I think. Most parts came from the UK as the early Yamaha's, especially the 250 cc models, sold in large numbers because of the then existing "L " licence. (Learner licence for 17 year old youngsters). The YDS3 is still as I restored it in 1979/1980, only the paintwork has been redone once. Now it actually needs only new spokes and a re-polishing of the aluminium parts to bring it back in showroom condition.

 

The left hand bulge on the crankcase indicates the crankshaft mounted clutch on this model. The Autolubepump is behind the clutch on the gearboxshaft. But when you were standing for a trafficlight with first gear engaged and the clutch pulled-in, the engine did not get oil as the Autolubepump was not rotating............!

 

Yamaha YDS3, l.h. cover
Yamaha YDS3, l.h. cover

 

This picture shows the position of the carburettors and the manifolds to the airfilter. And do you see the very rare original airpump underneath?

 

Yamaha YDS3, l.h. engine
Yamaha YDS3, l.h. engine

 

The rear hub on the brake linkage side with the original rear brakecable and rubber.

 

Yamaha YDS3, l.h. rear hub
Yamaha YDS3, l.h. rear hub

 

The front wheel has that nice twin leading shoe front brake that was the top of things in the 1960's. We were quickly satisfied then!

 

Yamaha YDS3, r.h. front hub
Yamaha YDS3, r.h. front hub

 

A combined speedometer/tachometer was used by all 4 Japanese brands but the Yamaha one was very nice.

 

Yamaha YDS3, speedo/tachometer
Yamaha YDS3, speedo/tachometer

 

An extra small cast bracket was fitted between the l.h. lever bracket and the rubber grip for a very small light/horn/indicator switch. This one was on the bike when I got it 30 years ago.

 

Yamaha YDS3, l.h. handlebar lever assy
Yamaha YDS#, l.h. handlebar lever assy

 

On the right hand side also the throttle grip was different from the later ones, these early ones were completely in diecast aluminium.

 

Yamaha YDS3, r.h. handlebar lever assy
Yamaha YDS3, r.h. handlebar lever assy

 

The Autolube oiltank had a polished aluminium cap. This was soon changed for a plastic cap.

 

Yamaha YDS3, oiltank
Yamaha YDS3, oiltank

 

The artistic linkage between the footbrake and the rearwheel quickly got some play. It was necessary to adjust it often. The stoplightswitch with a nice rubber cover fits snugly inbetween. Typical japanese details.

 

Yamaha YDS3, r.h. linkage
Yamaha YDS3, r.h. linkage

 

Lots of chrome in those days. Yamaha supplied also black sprockets as originals, I have old (new) ones already for the YDS2!

 

Yamaha YDS3, rear sprocket
Yamaha YDS3, rear sprocket

 

The rearlight was fitted to an one-piece chrome-plated bracket, quite simple but difficult to find nowadays.

 

Yamaha YDS3, rear light
Yamaha YDS3, rear light

 

From the rear you can identify these small taillights easily.

 

Yamaha YDS3, taillight
Yamaha YDS3, taillight
 

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