Suvro Sen
March 25, 2015



Many times ppl asked me ” Why is RX-S 115 so good to ride?” or “How come a 115 cc 2 stroke bike is so much faster than modern bikes with similar engine size ?” etc….

So I have decided to make a post and will try my best to explain. Sorry my Bangla typing is too slow for such a long post. Hence the post is in English. Shadhinotar Month e Bangla post deya uchit chilo. Khoma cheye nilam.

The reason is: Yamaha’s Energy Induction System. This sentence is usually embedded on the RXS side cover too….

yamaha rxs115

So what is Energy Induction System?

To simply explain – there is a Air Chamber just ‘between’ the Carburetor . and The Cylinder Intake Manifold. When Air-Fuel mixture is sucked in to the cylinder at lower RMP… Any excess Air-Fuel mixture that the cylinder cannot take in (as vacuum pressure is low in lower rpm) gets stored in that chamber.

Read More>> Yamaha R Review

At higher RPM… that extra Air-Fuel mixture gets sucked in to the cylinders and gives the bike an Extra Boost of power. That is why RX-S accelerates much faster than other bikes with similar Engine Size.

Attached photo will help you to understand better.

Yamaha's Energy Induction System

Photo 1 – Diagram of Energy Induction System

Photo – 2 – A RX without the Fuel tank. You can see the Airbox and the pipe connecting it to intake-manifold.

All RX-S will have a ‘PIPE’ sticking out from the ‘pipe’ that joins the Carburetor and the Cylinder. That Pipe connects to an Air-Box which sits under the fuel tank. (Kotha sohoj korar jonno Pipe word ta use korlam..)

RX-100 (Indian Bike) does not have that thus lacks RX-S’s power. (its not about the extra 15cc…. 15cc is Nothing…. its all about Yamaha’s Energy Induction System)

Lets get real: Breaking down some Myths.

However – I have ridden and owned many big multi-cylinder bikes…… I have been in-boxed by few ppl – asking ” Will an RX-S beat your FZ1 in acceleration – even though we know that the top speed is lower in rxs? ” – the short ans is NO…. an RX-S is quick but nothing even CLOSE to a 4 Cylinder Sports bike’s acceleration, power or speed.

I have ridden both…. My FZ1 is capable of doing a power-wheelie (Wheelie with only accelerator and not using clutch) at over 80 KM/H if you twist the throttle… I have done that my self and reached 0-96 KM/H in less than 4 seconds. … An RX will never even come close. Nevertheless, RXS a fun machine to ride.

-Written By Syed Hasib

1 thought on “Hero Motocorp Launched Hero Glamour 2017 Edition in India

  1. ভাইয়া সালাম,
    ভাইয়া আমার মেগেলি ১২৫”আর” লাল রঙ এর বাইক আছে। কিন্তু কিছুদিন আগে সড়ক দুর্ঘটনাতে বাইকের বডি সব শেষ।
    আপনি কি আমাকে নতুন বডি মেনেজ করে দিতে পারবেন?????
    দাম কেমন পরবে???
    একটু জানাবেন, দয়া করে।

    আসিফ ইকবাল

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