Explanation of "top end and "low end"

Wifesblaster

Built not bought
Feb 10, 2012
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Might sound like a dumb question, but I'm sure it confuses some people. Does top end refer to the higher gears or the higher rpm range in a single gear? Say top end pipe for example. Does this mean that a top end pipe will increase over rev in all gears or pull harder in the higher gears?
 
That's what I thought. I have been doing some reading about it and it seems some people equate a top end pipe to top speed. That's why you have low end, mid range, and top end.
 
I top end pipe is designed to produce the most power from the engine in the mid to top RPM range. A pipes power range is based on the design of the chamber. There's an RPM range where the pipe works like a supercharger and helps pull the air/fuel into the cylinder. That's where the term low-mid-top pipe comes from.
 
Gears are simply torque converters. Your engine always exerts the same amount of power and torque, although these change as the revs change. Gears simply change the gearing and allows the torque to be expressed differently.

In other words. Gears have nothing to do with top end/bottom end.

Electric engines do not need gears because they can produce 100% of their torque almost instantly and continually. Petrol engines only produce 100% of their torque at +-3000 - 4000 rpm, the rest of the time it is either increasing or decreasing, so you need gears to make use of that to get the best out of the motor.

Thats why we all know, wrong gear + wrong time = trouble.

Answer? go electric! (if it were not for batteries)