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Maintainance-free battery for motorcycles

Battery is not a very important aspect for bikers who drive RX-Z, 125Z and Honda EX5. This is because the battery is only used for signal indicator, fuel indicator and to drain the excessive voltage from the magnet to it.
But, it is very important for those who use electric starter bike such as LC135, FZ-150i, Lagenda and scooters. The problem is the battery is always dead at the time when we needed it the most. Why is this happening?
There can be three basic reason of why the battery can be dead:
1. Battery itself is condemned (cannot retain the charge anymore).
Solution: Replace the battery.

2. The alternator (or cut-off) is damaged (cannot charge the battery anymore).
Solution: Replace the alternator.

3. The bike is not used regularly and used a lot in start stop condition. When this happen, the battery is drained more than it could be charged by the alternator.
Solution: Charge the battery and use the bike regularly. If not, sell the bike to the one who needs it the most than you.

Racing block for RX-Z is known as Y1. Y1 is very popular because it can withstand high temperature for long duration of usage. Also, Y1 has bigger displacement compared to Y2, Y3 and Y4. With Y1, you can also rebore the cylinder to get higher displacement without having to deal with overheating of the engine.
Original Japan Y1 block is very rare, since it has been replaced with the recent Y4. Anyone who wants to get Y1 maybe need to check for secondhand RX-Z.
The video here was found at YouTube, but there is nothing special to look at actually. I was hoping the uploader to show what he did with the block or tell us how to rebore the block.

Yamaha T135 Official Page

I have stumble upon this very informative site about the research, development and roadtest for Yamaha LC135. Yamaha LC135 is actually codenamed T135 that is targeted for Asean market by exhaustive research by the Yamaha engineers.
Yamaha has a very excellent history in developing bike and also very successful in racing whether in MotoGP, motorcross or others.
At this time, there is no other bike that are in the same category as Yamaha LC135 by other manufacturer. This can be deja-vu to reflect to Yamaha RX-Z 135 that is also remain uncontested up to this day.
For more information, surf up to
Uma Racing Pilot Jet (M6)

This racing pilot jet from Uma racing is used to modify the setting of the carburetor and usually used in conjunction with exhaust modification. Read my article about Uma Racing Main Jet for more info.
This part is available in many sizes that is; 30, 32, 35, 38, 40, 42, 45, 48, 50, 52
For more info, surf to here.
Uma Racing Main Jet

Uma Racing main jet can be use to upgrade the performance of your carburetor. With larger main jet diameter, more fuel can be pumped to the combustion chamber in your bike.
The modification of this item is usually done with modification of the exhaust to get maximum performance. A modified exhaust can consume a lot more fuel that normal exhaust, so, in order to feed the hungry exhaust, carburetor modification is needed. One part of the carburetor modification is to modified the main jet.
Uma Racing main jet is available in these sizes; 88, 90, 92, 95, 98, 100, 102, 105, 108, 110
For more info, surf to here.
Uma Racing Carburetor

Uma Racing parts especially the carburetor is very popular among bike enthusiasts. Uma Racing carburetor can give better performance than standard carburetor due to its oversize air intake diameter.
This carburetor is available in many sizes that is 24mm, 28mm, 30mm, 32mm and 34mm.
The bigger the diameter of the air intake, the more fuel and air mixture can be burnt and this also means it consumes more fuel than standard carburetor.
Usually, modification of carburetor is done with the modification of exhaust to get a good performance from both parts.
For more info, surf to here.


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