I gave up on the yd100

[Damien]

So I had spent countless hours on the yd100 and went back to my original 80cc as it was put together. Here's a few photos and parts list.
Mz65 clone
Ktm 50 carby
Reed valve
Windowed piston
High comp head
36 tooth sprocket
3l fuel tank
New kenda tyres
Ported cylinder
Newer style/upgraded cdi
To be installed is:
New white moto grips
New 415h chain as old 415h is rusted
Quater turn throttle cable
Kill switch

 

[Frogslayer]

Those are kenda tires in this pictures...

 

[Damien]

Oops thanks lol

 

[Karl Snarl]

Yd's are for people that want a little more power, without any hassle. Not performance engine in the slightest sense. They last a long time though and give slightly more power than an out of the box 66. You want performance in a CG, get the 100cc steel sleeve. You want more than that, go hybrid. The YD's run a really rich fuel mix. I'm using 72-74 on them at 2200-2500 feet above sea level. It's the lower compression, needs more fuel. They also need a better balanced crank. lol.

 

[mony0_3]

Some of them YD 100's are weaker than 66cc's!

 

[Chainlube]

What's the actual displacement on a 100, 76cc?

 

[Karl Snarl]

What's the actual displacement on a 100, 76cc?

75 to 79 from what I've seen. Varies a little on whos making the jug