Headlight Booster

Want more JUICE out of your stock headlight, and do not want to modify your existing wiring. Click to learn more.

HID charging conversion

Are you tired of Battery depletion everytime you uses your newly installed High Intensity Discharge Headlight, Click for solutions.

Fixing OIL drain plug thread

Are you looking for fixing that oil drain plug that went bad and unable to thread that bolt due to loose thread, Here is an easy solution for, CLICK for detais.

Led Light Solution

Wanting to conserve battery power of your motorcycle? Why not change all of your indicator BULBS, such as signal light, tail light and brake light to LED BULBS. Click for more info.


CDI is the heart of your ignition, wanting more power than STOCK but do not want to buy such RACING CDI? You need to know how it work first to understand where to START improving the ignition. Click for more.

Horn Interrupter

Want to have a horn sounds like a machine gun that produces successive sound with only one press of the HORN switch, add spice to that annoying stock horn, CLICK for details.

Reusable OIL filter mod

Paper element OIL filter tends to suffer from clogging, so why not try this filter mod I am using with my small motorcycle for more OIL flow.

Related Posts with Thumbnails

Last Updated: May 22, 2010

Motorcycle Voltage Regulator DIY

This project is a voltage regulator for a 3-phase, permanent-magnet alternator found on motorcycles. The same design can be used for single-phase alternators simply by eliminating some parts.  This project only describes the regulator, even though a rectifier is typically integrated into the unit.

Circuit Analysis:
Please refer to the circuit diagram during the analysis of the circuit.

The way this type of regulator controls the alternator’s output voltage is by simply shorting out the stator winding for one cycle of the ac waveform. This is called shunting. This is done because it is much easier to short-circuit an inductor (the stator winding is an inductor) than to open-circuit an inductor. Very high voltages are induced when an inductor circuit is opened. This may cause a breakdown in the winding’s insulator.

The device used to shunt one cycle of one phase is an SCR. A silicon-controlled rectifier acts as a diode when triggered at its gate. It stops conducting when the current drops below a very low threshold value. Once it stops conducting, it will not conduct again until it receives another gate signal.

A voltage detection circuit is used to trigger the gate on each of the three SCRs. The threshold voltage to trigger the gate is selected as 14.6volt (on the motorcycle’s system-voltage). This is when the gate would trigger if there were no capacitor as described in the next paragraph.

Since the voltage from an alternator fluctuates, the detection circuit will trigger during a peak in the waveform of one of the phases, but this causes the average voltage to be too low. To raise the average system-voltage without increasing the detection threshold, a simple capacitor is used to delay the triggering of the SCR gates.  The capacitor acts as a filter to reduce the ac ripple going to the detection circuit. If the system voltage was strictly DC voltage (with no ripple) the gate would trigger at 14.6v and the average voltage would be 14.6v. In reality, the average voltage is always less than the threshold voltage and only approaches it as the ripple reduces. The actual trigger voltage is higher than 14.6v, but the average voltage is lower than 14.6v. As the ripple reduces, the average and trigger voltages approach 14.6v.

Last Updated: May 20, 2010

Shogun Speedometer Panel

Let us take a look inside the speedometer panel of a suzuki shogun 125cc, as shown on the left with speedometer pointer  and lcd remove. The main controller of this panel is a chip made by fujitsu with part number MB89943 which is an 8-bit cpu, controlling everything from the movement of the speedometer needle, lcd display. and counter. Data then are stored like odometer, speedometer reset, fuel gauge calibration on the a microwire bus eeprom with part number L46R.

 Shogun 125cc user espescially those 2006 model and below experiencing odometer stuck up to 99,999.9 and uncapable of resetting itself back to zero..unfortunately newer model already have its own data stored on the eeprom that resets the odometer after reaching the said value.

The only solution to this problem is to inject the new data stored on newer speedometer panel eeprom to IC5 (L46R) by using an eeprom programmer like IC prog with interface such as tait serial programmer and or JDM programmer.

Last Updated: May 17, 2010

High Power Leds

Power led is the new era of led lighting, both at home and automobile use. They come in a variety of it, from 1 watt up to 20 watts..being 20 watts made by china of course..

Lighting Company is the world's leading manufacturer of high-
power LEDs and a pioneer in the use of LED lighting solutions for everyday, made the so called LUXEON LEDS.

Such application of this leds are seen in flashlights as shown here. They are far better than those of maglite. They are also widely use as an alternative lighting solution to halogen on some mountain bikers worldwide due to their versatility. The only problem enthusiast who uses this kind of leds are the constant current driver itself..unlike those 5mm super bright leds, resistor or linear current regulator is enough for some simple applications, but for some who really want to gain the best of this leds, Constant current led drivers are there to the rescue.

Last Updated: May 06, 2010

Naphthalene use as fuel mileage

Can this magical white balls do the trick on improving fuel mileage using the poor e10 based     gasoline. Eversince i used this greener fuel on my motorcycle, it performs really bad, worse of it, i cannot even get me rolling to 200km on a 4.5 liter full tank the way i used to have using non e10 gas.

Naphthalene was used as a fuel, before WWII, and race car drivers used it to boost octane by adding 5 mothballs to every gallon of fuel. That amount caused the engine to carbonize. Today, many are using it to get better mileage out of gasoline and diesel engines. Some have reported fantastic gains up to 96% in V8 engines.
Old Fashioned Moth Balls are 99.5% pure Naphthalene. That is the only type of mothball that works.  A friend told me they are illegal in Europe.It can takes a mothball an hour or more to dissolve in your tank. Some people crush them up first. In cooler weather, it will take longer; take this into consideration in order to prevent a buildup in your tank.Oh, the gas pills you hear about - Naphthalene :)

Oh well its worth to try, we might even know unless we try, Am i right?

Testing fuel for alcohol content

Alcohol doesn't have as many BTU's as gasoline, and it doesn't perform the same. I will show you how to test your fuel for alcohol content.

Things You'll Need:

  • 100 ml graduated cylinder
  • fuel sample
  • tap water

  • Collect a fuel sample from your car's fuel supply. I use a clean 1 liter pop bottle that is clean and dry (so you contaminate your sample).
  • Pour 90 ml of your fuel sample into the 100 ml graduated cylinder. Add 10 ml of water to the cylinder and cover the top with your finger and shake. Shake it hard.
  • shake really hard. You want to emulsify (break up into zillions of minute particles) the water so those water bubbles come into contact with all the gas molecules

  • Let the fuel sample set for 10 to 15 minutes. The alcohol will combine with the water and separate from the fuel. Read the line where it separates.Now comes the calculation, with 100 ml = 100% Looking at the cylinder, the way we would read this is: The line is on the 53 and we know 10% was water to begin with. The water will settle to the bottom because water is heavier than gasoline. 53-10=43 This sample would be 43% alcohol, which would be way to much for a 10% blend and most cars would run very poorly if they started at all.
 Not all gasoline provider are created equal, they say its not ethanol based yet where in fact user dont know how to detect the presence of alcohol on the gasoline they are purchasing, it might be too late.

Last Updated: May 05, 2010

Small Engine EFI conversion Kit

World's first small engine conversion kit. This kit will allow you to change your carbureted engine to fuel injection. The only thing needed is a 12 volt charging system.      
 Due to the era of E10 or ethanol based gasoline, small engines that utilizes the conventional carburetor are most affected. Fuel consumption up, thus spending more money on gas fill up. low mileage, erratic idle, and engine power down, frequent carb tuning. sometimes engine pull hard, and in times pull so weak.

I think its time to give way for those EFI be fitted on small engines, like scooters and underbones here in Asia. particularly here in the Philippines.

Suzuki, Honda, already offered 125cc small engine that uses EFI system particularly in indonesia, and from their testimony in a forum, where i am also still active, they say YES, the EFI performs better, little tweaking since fuel delivery is electronically controlled by the ECU, get a much higher mileage, thus spending less on gasoline. 

Shogun Clutch Spring and lining

Sliding clutch, delay of power, fuel consumption up. This are some of the reason the CLUTCH system of your shogun must be inspected, and in need of repairs.

This photo shows the internals of the right side crankcase cover of a manual transmission shogun. The release plate cover of the clutch spring has been removed to expose the 4 clutch spring, In order to remove the plate, you'll be needing the close wrench #10, two of them actually in order to counter the rotation of the clutch system when dismantling the release plate.


This is a closer view of the clutch spring, An OEM parts is fitted here, but there are other alternatives out in the market that differs in stiffness like KITTI racing clutch spring, as shown kitti

Making the clutch spring more stiff means extra performance on clutch grip thus improving torque and power but with the expense the life of your lining.

Other motorcycle enthusiast actually trying to replace 2 of the 4 spring with stiff ones to improve clutch grip with less effort on pressing the clutch lever, What they didnt know, it deformes the release plate and have an un even wear on the lining...Its better to replace 4 rather than two.

Last Updated: May 04, 2010

Suzuki Shogun Night rider 125 II

Technical Specifications
Engine type
Bore x Stroke
Compression ratio
Max Power
Max Torque
Fuel system
Final drive
Ignition type
Starting system
Intake system
Spark plug
Gear ratios

Air cooled, 4-stroke, SOHC, single cylinder
53.5 x 55.2 mm
124 cc
4 valves per cylinder
10.0 ps @ 8.500 rpm
0.98 kg-m @ 5.500 rpm
MIKUNI VM 18 - 264
4-speed rotary

Kick & electric starter

12 V (3,5 Ah)/10 HR7,0 L
Frame type
Overall length
Overall width
Overall height
Seat height
Ground clearance
Fuel capacity
Suspension (front)
Suspension (rear)
Tyre (front)
Tyre (rear)
Brake (front)
Brake (rear)

1905 mm
715 mm
1075 mm
1220 mm
770 mm
135 mm
108 kg
4.3 litres
Telescopic, coil spring, oil damped
Swingarm type, coil spring, gas/oil damped
70/90-17 M/C 38P
80/90-17 M/C 44P
Hydraulic disc 290 mm
Hydraulic disc 220 mm

Of all the shogun variant, this model impresses me by its color
 combination, and with specs indicated above, i for sure will give suzuki philippines a better upper hand on its 125cc commuter bike if they will introduced it this year. Compared to its predessesor the Shogun PRO..(philippine brand) Shogun SP (indonesian brand), Best 125 (thailand brand), the night rider version not only with its look, that was changed, even the engine efficiency was totally upgraded, with a new crank balancer to minimize engine vibration, POWER and TORQUE was uplifted...

maximum horsepower at 10,0 Ps/8.000 rpm and maximum torque at 0,98 Kg.m . 6.000 rpm, this data alone gave NR the upperhand on all 125cc commuter bike being offered on all asian countries.