Yamaha LC135 Rear Disc Brake Kit

Racing Boy Yamaha LC135 Rear Disc Brake Kit

Click to enlarge

This time it is for Racing Boy Yamaha LC135 Rear Disc Brake Kit. I guess this one is more expensive than the one that I have featured recently.
I like this one since it has a very nice red colour for the caliper with the grooved and cut disc plate. This kit also consist of disc plate, caliper, brake pump, brake fluid reservoir, but some things has gone missing in the picture that is the brake lever and caliper mounting plate. I forgot to ask the shop whether it came with those items. If anyone have any info about this, hope you can share.

Article Source : http://motomalaya.blogspot.com/2009/02/yamaha-lc135-rear-disc-brake-kit-again.html

Why LC135 have only 4-speed gear and 125Z have 6-speed gear?

Have you ever wonder about this? Why is it the marvelous and lovable Yamaha LC135 only have 4-speed gear and Yamaha 125Z having additional 2 speed gear? Is Yamaha neglected the important aspect of speeds and thrills? Well, I have been thinking about this for a while and tried to find out why. Here is what I've found out...

The reason why Yamaha 125Z needed to have 6-speed gear is due to narrow powerband that is natural for 2-stroke engine. 2-stroke engine needs RPM more than 5000 (depends to the cc) to deliver its optimum torque, whereby 4-stroke engine can deliver the optimum torque from as low as 1500 RPM. So, because of this, 2-stroke engine needs to have a lot more gear than 4-stroke engine to make sure the torque can be spreads out all along the speed (km/h) starting from low speed to very high speed.

For example, LC135 can run on 4th gear as low as 20km/h and from there you can also speeds up to 160km/h without hesitation from the engine. Try this on your 125Z, and tell me how does it feels.

As you can see, having only 4-speed gear on LC135 is not a disadvantage, it is the nature of 4-stroke engine that have wide powerband. But, I think it is also not a wrong decision if Yamaha engineers decides to make LC135 being 6-speeder! More power, more fun!