UK Karting - Notice Board (2-Stroke Karting) : Re: good bhp on dyno???

Notice Board (2-Stroke Karting)

Re: good bhp on dyno???
Posted by 'itpro' on 21 Jan 2011 @ 12:18

| View Message Thread | Reply to this message |

itproJoined: August 2001
Total Posts: 6
[ View User Profile ]

Steveo is trying to tell you that the MAX height of the power curve is NOT the most important thing. Which engine would YOU prefer:-

1) One which produces 3bhp all the way THOUGH the range but then LEAPS to 29.7bhp at excatly 12,000 rpm but dropping bak to 3bhp after 12,500

or

2) One which poduced a FAT 29bhp from 8,000 rpm all the eway through to 16,000rpm?

If we said that 29.7bhp was EXCELLENT in response to your question.... we'd be telling you the wrong answer if your engine was like my first example.

Secondly, the BHP recorded on your dyno was produced in air temp X, humidity Y and air pressure Z. What happens when the wether conditions change?

Thirdly, it was also produced on Mr Blogg's dyno. My Dyno may WELL be calibrated differently and ALL the engines on my dyno might show as much as 1bhp MORE simply because I didn't get it calibrated by identically to your current one. How do we KNOW how 'your' dyno was calibrated?

The correct answer is..... you should ONLY use a dyno to compare changes, done on the same day, same conditions, same dyno, same operator. Trying to compare your engine on Dyno X with my engine on Dyno Y on a different day is simply a waste of time.

Ian

Message Thread:

good bhp on dyno??? by 'fatkartman' (20 Jan 2011 @ 21:16)

Re: good bhp on dyno??? by 'stevo69' (20 Jan 2011 @ 21:22)

Re: good bhp on dyno??? by 'fatkartman' (21 Jan 2011 @ 6:08)

Re: good bhp on dyno??? by 'itpro' << You are here!

Re: good bhp on dyno??? by 'stevo69' (21 Jan 2011 @ 20:00)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links