UK Karting - Notice Board (Combined Forum) : Re: Horsepower from a cadet honda

Notice Board (Combined Forum)

Re: Horsepower from a cadet honda
Posted by 'itpro' on 06 Apr 2014 @ 11:33

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itproJoined: August 2001
Total Posts: 6
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Firstly, don't get confused by the idea of peak power output... it really is illusory. Look at two engines:-

Engine 1 has a smooth power band in the mid range ,
Engine 2 has a feeble motor until exactly 5,500 when it becomes ballistic.

Engine 1 Engine 2
..................................................
2000 rpm = 4.5bhp 3.0bhp
3000 rpm = 4.8bhp 4.0bhp
4000 rpm = 4.9bhp 4.1bhp
5000 rpm = 5.2bhp 4.9bhp
5500 rpm = 5.3bhp 6.5bhp
6000 rpm = 5.5bhp 5.1bhp

Remember, engine 2 is at max power in a small band...... how long per lap are you AT that peak power revs......?

Which engine would YOU prefer to race?

..... and yet, if we advertise both of those engines for sale, engine 1 has 5.5bhp but engine 2 has a spectacularly higher 6.5bhp..... and yet you now know that engine 1 would be BETTER in a race!

Obviously, those figures are just examples and don't match real engine performance..... they are illustrative, only..... but I hope you get the concept. As I said, peak power, on its own, is illusory.

Ian

Message Thread:

Horsepower from a cadet honda by 'BombHead' (06 Apr 2014 @ 9:58)

Re: Horsepower from a cadet honda by 'itpro' << You are here!

Re: Horsepower from a cadet honda by 'Mark 71' (06 Apr 2014 @ 15:49)

Re: Horsepower from a cadet honda by 'itpro' (07 Apr 2014 @ 12:07)

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