Brands worth knowing
here is an original series written by Webike staff. Webike is from Japan and we get tons of brands whether from japan or not, but actually there are some Japanese brands that non-locals may not know well. We really don't wanna see you guys miss out on any of all the great stuff available to you or your bike just because you don't know the brands. We update articles of "BWK" regularly, so stay tuned.
Story
Is your motorcycle's ignition system healthy?
Points ignition circuits common in classic motorcycles. Actually most classic motorcycles lose power significantly due to the deterioration of the ignition system, its difficult to start and loses its punch in the low and medium speed ranges. One of the most essential systems in a motorcycle is its ignition system. In order for a motorcycle to run, its ignition system must function properly, and a variety of issues can occur if it doesn't work well.
So if you are bothered by these ignition problems or you don't want to be bothered one day, a highly successful ignition system tuning is necessary.
Get Maximize potential
The three most important elements of a gasoline engine are "good mixture," "good compression," and "good spark. This "good spark" means a stronger spark, a larger flame center and optimal ignition timing, resulting in more power, more torque, better fuel economy and fewer misfires.
For this purpose, not only increasing the spark strength but also widening the plug gap is an effective means.
However, if the plug gap is widened, the required voltage will increase drastically, which may cause ignition loss or poor combustion in the case of a normal ignition coil.
What does AS Uotani do?
This time I would like to introduce you a brand through the evaluation of local riders, so let's check directly to the Japanese riders' reviews for using the products of AS Uotani.
I was surprised to see the increased torque from the moment I started engine. I felt that the all power band became more stronger. It also changed the response and sound when I opened the throttle. It is a great engine part.
from a SUZUKI GS1200SS owner
I was able to ride the bike at full throttle and really feel the power of the SPII. First of all, the top speed was a blistering 260 km/h. I felt the power was stronger than when I was riding the early GSF1100. In my case, I set the rev limiter to free. I'm a person who often watches the tachometer. There is no jerkiness at low speeds, and the engine always seems to follow the gas pedal. I'm also thinking of choosing an ignition curve that suits my riding style and getting excited now.
from a SUZUKI GSF1200 owner
I could clearly see the difference from the moment I started the engine. The idling became very stable. The response was better and it ran smoother even at RPMs where it used to labour.
from a YAMAHA SR400 owner
Brave to challenge the tuning market
As you can see above, AS Uotani is an expert in the field of ignition tuning which has a good reputation in Japan. AS Uotani develops and ignition systems, power coils, and replacement parts for motorcycles.
What I say most attractive about AS Uotani is that it allows riders to trust their machines more. Personally, rather than powering up, the most exciting thing for me is to be able to bring out the full potential of a motorcycle, getting a different riding experience from the stock model, in other words, I wanna feel the purest face of a motorcycle.
AS Uotani challenges the ignition system tuning market which was mainly made overseas, with "Japanese development and Japanese production". Uotani has developed a vast amount of original know-how, including the production of original maps based on the analysis of the stock ignition characteristics that differ from model to model, and transistor units that can immediately cut off a large current, and has produced bolt-on kits for a wide range of models, from non-continued ones all the way to the latest ones.
After analyzing the ignition characteristics of the stock igniter, an ignition map of unique taste is created and set in the control unit. Since it is completely digitally controlled, the three-dimensional map corresponding to the advance angle, retard angle, and throttle position sensor can be set as desired. The strength of AS Uotani is its ability to control the strong spark as desired.
Products
SPII FULL POWER KIT
Torque is increased throughout the entire range, especially in the low to mid range where it is often used in city riding.
Specially designed for all bikes with the best ignition map set by chassis dynamo and actual riding.
The ignition map emphasizes the increase of torque at low and mid speed and the extension at high rpm while utilizing the characteristics of the stock engine.
The control unit uses a high-capacity transistor to extract 100% of the energy from the high-power coil.
The high performance microcomputer controls the optimum energizing time and ignition timing for each revolution.
Five to ten different ignition maps (curves) can be set depending on the riding style and the degree of tuning.
Rev limit can be set at every 200 rpm by a switch.
SPII POWER COILS KIT
Torque is increased throughout the entire range, especially in the low to mid range where it is often used in city riding.
SPII high power coil generates 2~3 times more spark current and 40,000V voltage compared to normal coil, which improves starting performance and fuel efficiency.
The SPII power amplifier brings out the full potential of the high power coil without placing a heavy workload on the stock igniter.
When installed on point ignition vehicles, most of the current flows through the SPII power amplifier, contributing to a significant extension of the life of the points.
Can be installed on the latest models as well as early models regardless of the resistance value of the stock ignition coil (CDI ignition bikes do not require a power amplifier, only the SPII high power coil can be installed).
A connector, wiring harness, and plug cord joint set are included, allowing installation with minimal modification.
Choose the one you need
If you want to improve the performance of your ignition system but are not sure which kit you need for your motorcycle, we've summarized three situations where you may need a kit.
"for changing the ignition timing"
➤ SPII Full Power Kit
In addition to the powerful spark, the SPII Full Power Kit comes with a control unit that replaces the stock igniter. The ignition map can be changed and the rev limit can be set every 200 rpm. The SPII Full Power Kit is designed specifically for your bike, so you can install it easily.
"for classic bikes such as points/semi-transistor ignition"
➤ SPII Full Power Kit
Classic bikes such as KAWASAKI Z1 and HONDA CB750FOUR use mechanical ignition systems called points ignition. As it is, the degree of freedom of ignition timing setting is low, and it is difficult to obtain the ideal ignition map. By installing AS Uotani's SPII Full Power Kit, not only powerful spark but also digital control of ignition is achieved. In addition, since the points are replaced by pickup coils, there is no need to worry about the maintenance and life of the points.
"for those who don't need to change the ignition map or want to use another manufacturer's CDI"
➤ SPII Power Coil Kit
The SPII Power Coil Kit does not come with a control unit. Instead, it comes with the SPII power amplifier. CDI ignition does not require a power amplifier because the current flowing through the coil is very low to begin with. This is a universal kit, but there are also kits for specific models for some vehicles. Also, for classic bikes that use point ignition, the life of the bike is greatly extended because the current flowing to the points is reduced.
tip: a function guidance
Even though this is not a new feature, I think many people may not have used it. Every time I post a link to the brand page at the bottom of BWK, click on it and a model matching function inside can be found, you'll see how convenient it is when you try it.
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