Kawasaki 1400 GTR

1400 GTR - All Models => 1400GTR Discussion => Topic started by: Charlie747 on September 10, 2015, 11:29:51 PM

Title: Another maths quiz
Post by: Charlie747 on September 10, 2015, 11:29:51 PM
Ok so to put a twist on it I'll give you the answers to 2 questions regarding the big beautiful 1400GTR

All you have to do is work out the questions  :agree:

1 happens 333.333 times/sec

2 travels 73199.927 kph

When you nail her ?

Title: Re: Another maths quiz
Post by: viper on September 10, 2015, 11:42:49 PM
I'm thinking that the first one is something to do with spark plug firing or pistons movements , so maybe the second one is related , ie crankshaft rotations /speed
Title: Re: Another maths quiz
Post by: Charlie747 on September 10, 2015, 11:45:16 PM
Quote from: viper on September 10, 2015, 11:42:49 PM
I'm thinking that the first one is something to do with spark plug firing or pistons movements , so maybe the second one is related , ie crankshaft rotations /speed

Yer in the warm zone dude  :mfr_lol:
Title: Re: Another maths quiz
Post by: Charlie747 on September 10, 2015, 11:59:37 PM
Clues are available
Title: Re: Another maths quiz
Post by: O.C. on September 11, 2015, 08:25:54 AM
Kawasaki Ninja supercharger RPM ? 
Title: Re: Another maths quiz
Post by: Charlie747 on September 11, 2015, 08:35:35 AM
Quote from: O.C. on September 11, 2015, 08:25:54 AM
Kawasaki Ninja supercharger RPM ? 

The questions are all found on our lovely 1400GTR's

So sorry OC wrong question

Think along Vipers lines
Title: Re: Another maths quiz
Post by: Debs on September 11, 2015, 11:14:18 AM
Must be something to do with the pistons  :mfr_lol:
Title: Re: Another maths quiz
Post by: PRD on September 11, 2015, 12:21:18 PM
Ignition system
Title: Re: Another maths quiz
Post by: PaulB on September 11, 2015, 03:48:20 PM
1: valve opening maybe?

2: piston (assuming 61mm stroke, which is 122mm per turn of the crank, so at around 11000 rpm that equates to about your figure over an hour)

Cheers

Paul B.
Title: Re: Another maths quiz
Post by: viper on September 11, 2015, 05:24:50 PM
er, my brain hurts
Title: Re: Another maths quiz
Post by: virginiajim on September 11, 2015, 05:33:51 PM
Just think what it's doing to mine...
Title: Re: Another maths quiz
Post by: shaggs147 on September 11, 2015, 06:40:55 PM
Nothing to do with canbus communication speeds then?
Title: Re: Another maths quiz
Post by: pross on September 11, 2015, 06:45:25 PM
It sounds like me finishing a drink then going to the bar when they call last orders .
:mfr_lol: :mfr_lol:
Title: Re: Another maths quiz
Post by: Charlie747 on September 11, 2015, 08:38:15 PM
OK PaulB is so close to answer 2 he's a winner

The question was how fast does the piston move @ 10000rpm answer in kph


So any ideas on answer 1 ?  :popcorn:
Title: Re: Another maths quiz
Post by: pross on September 11, 2015, 08:59:09 PM
Quote from: Charlie747 on September 11, 2015, 08:38:15 PM
OK PaulB is so close to answer 2 he's a winner

The question was how fast does the piston move @ 10000rpm answer in kph


So any ideas on answer 1 ?  :popcorn:

Bro.
Is it a winky wanky bird in a sand storm  :yes:  :popcorn:
Title: Re: Another maths quiz
Post by: PaulB on September 11, 2015, 09:50:03 PM
Sorry to do this, but the question was misleading by a factor of 1000. I'll try and show my working :smiley:

<pedant mode>

61mm piston stroke,
122mm per revolution = 0.122m per revolution.

At 10,000 rpm that's 1220m per minute. (0.122 * 10000)

That's 73,200 m per hour (1220 * 60). Or 73.2 km per hour :smiley:

I thought mach 59 sounded a little fast for piston speed  :mfr_lol:

</pedant mode>

Cheers

Paul B.
Title: Re: Another maths quiz
Post by: Charlie747 on September 11, 2015, 10:39:39 PM
 :oops: My error  :mfr_lol: 

The answer was miss leading by a factor of 1000  :mfr_lol:

We had better work on the number of times the piston stops and changes direction / sec when the crankshaft speed is 10000rpm

That happens twice per crankshaft revolution

So 10000rpm / 60 = revs per sec

= 166.667 revs per second

166.667 revs per second x 2 the number of times a piston stops and changes direction per revolution

= 333.334

Therefore a piston changes direction 333.34 times a second at and engine speed of 10000rpm

It makes you  think of the stress and load on an engine ? .............Well it does me  :mfr_lol:

Thanks for the correction PaulB  :punk:

PS hope I've got it right this time  :surrender:

: