Author Topic: MOTO MATHS: We can work it out ...  (Read 14257 times)

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Offline Berwick Boy

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MOTO MATHS: We can work it out ...
« on: May 22, 2014, 06:45:09 pm »
No. ONE:
   In November, 1970, a Yamaha RT1 Enduro is cruising highway at 5,700 RPM, and sits on 95 kph.

Question:  How far does it travel (in metres) per single revolution of the crankshaft?

Offline Mick D

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Re: MOTO MATHS: We can work it out ...
« Reply #1 on: May 22, 2014, 07:05:46 pm »
No. ONE:
   In November, 1970, a Yamaha RT1 Enduro is cruising highway at 5,700 RPM, and sits on 95 kph.

Question:  How far does it travel (in metres) per single revolution of the crankshaft?
0.2777777778 meters traveled per crank revolution
"light weight, and it works great"  :)

Offline Big John

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Re: MOTO MATHS: We can work it out ...
« Reply #2 on: May 22, 2014, 07:12:04 pm »
Yep thats what I got 0.27777as many7s as you want8

Offline Canam370

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Re: MOTO MATHS: We can work it out ...
« Reply #3 on: May 22, 2014, 07:16:19 pm »
 :D
WANTED. Canams;all models,complete or parts.SWM stuff too!

I'm THE Thread Killer - when I post a thread dies!

Offline jerry

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Re: MOTO MATHS: We can work it out ...
« Reply #4 on: May 22, 2014, 07:18:11 pm »
Was metric in then? J

Offline Mick D

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Re: MOTO MATHS: We can work it out ...
« Reply #5 on: May 22, 2014, 07:26:03 pm »
I have a feeling the official change to speed signs in NSW happened in 1974(MPH to KPH), at the beginning  of the financial year. Could be wrong though. The question asked is traveled over a distance of 95,000 meters though.

If you are building a secret RTI weapon, I want in on it Berwick Boy ;D
Big John may too ;D
"light weight, and it works great"  :)

Offline Berwick Boy

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Re: MOTO MATHS: We can work it out ...
« Reply #6 on: May 22, 2014, 07:28:08 pm »
Nothing happening ... just doing the maths

Offline Mick D

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Re: MOTO MATHS: We can work it out ...
« Reply #7 on: May 22, 2014, 07:33:46 pm »
In that case it will take 3.5999999997 crank revolutions to cover a distance of one meter.
"light weight, and it works great"  :)

Offline Berwick Boy

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Re: MOTO MATHS: We can work it out ...
« Reply #8 on: May 22, 2014, 07:39:04 pm »
No. TWO:
In 1979 at Valkenswaard, Jeff Leisk ran out of petrol.  I just phoned Buddha.
He reckons it was about 2 mins per lap, and they ran 10.5 litres.
He recalls it as 22 laps, and that Leisk made it around 20.75 times.

Question: How many extra mls of fuel would he have needed to finish the last one and quarter laps?
(Please answer in mililitres, or fractional number of 370 ml coke cans)

Offline Stan S

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Re: MOTO MATHS: We can work it out ...
« Reply #9 on: May 22, 2014, 07:48:02 pm »
 ;D ;D ;D

Offline Mick D

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Re: MOTO MATHS: We can work it out ...
« Reply #10 on: May 22, 2014, 07:48:56 pm »
He would have needed an extra 632.5 ml's to finish or 1.7 coke cans of the good stuff.
"light weight, and it works great"  :)

Offline Tim754

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Re: MOTO MATHS: We can work it out ...
« Reply #11 on: May 22, 2014, 07:49:23 pm »
Three (sorry for the thread invasion Mr Boy ;)) The Question - Approximately to the nearest 10000, how many crankshaft revolutions does a Top Fuel dragster do in a 4.5 second run from green light to finish line (Only)  20000, 30000, 40000 50000+?
Answer 1800... yes 1800 What's the maths to show that?

Help hints" Distance and  RPM

Top fuel dragsters are the fastest sanctioned category of drag racers, with the fastest competitors reaching speeds of 330 miles per hour (530 km/h) and finishing the 1,000 foot (300 m) runs in 3.7 seconds, or the full quarter mile (402 m) in 4.4 seconds.

Because of the speeds, this class almost exclusively races to only the 1,000 foot (300 m) distance, and not the traditional 1/4 mile (1,320 foot / 402 m). The rule was changed in 2008 by the National Hot Rod Association following the fatal crash of Funny Car driver Scott Kalitta during qualifying at the SuperNationals, held at Old Bridge Township Raceway Park in Englishtown, NJ. The shortening of the distance was used in the FIA at some tracks, and for 2012 is now the standard Top Fuel distance. The Australian National Drag Racing Association is the only internationally recognized sanctioning body that races at 1,320 foot for the majority of races in Top Fuel.

Measuring the power output of a top fuel engine directly is not always feasible. Certain models use a torque sensor incorporated as part of the RacePak data system. Dynamometers that can measure the output of a Top Fuel engine exist; however, the main limitation is that a Top Fuel engine cannot be run at its maximum power output for more than 10 seconds without overheating or possibly destroying itself explosively. The engine power output can also be calculated based upon the car's weight and its performance. The calculated Power output of these engines is most likely somewhere between 8500 and 10,000 horsepower[citation needed] (approximately 6000-7500 kilowatts), which is about twice as powerful as the engines installed on modern Diesel locomotives, and approaches the power output of the largest aviation turboprop engines, with a torque output of approximately 6000 lbf·ft (8135 N·m) and a brake mean effective pressure of 80–100 bar (8.0-10 MPa)
« Last Edit: May 22, 2014, 07:53:06 pm by Tim754 »
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Offline HVA61

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Re: MOTO MATHS: We can work it out ...
« Reply #12 on: May 22, 2014, 07:52:05 pm »
632.528ml
Autos are the way forward , see you round like a robot
Take the short cut, go Cross Country
The shortest distance between two points is Cross Country
CCM's and HL's bark like mad dogs

HeavenVMX

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Re: MOTO MATHS: We can work it out ...
« Reply #13 on: May 22, 2014, 07:54:18 pm »
No. ONE:
   In November, 1970, a Yamaha RT1 Enduro is cruising highway at 5,700 RPM, and sits on 95 kph.

Question:  How far does it travel (in metres) per single revolution of the crankshaft?
0.2777777778 meters traveled per crank revolution
That would be metre not meter. Just sayin'  :P :P :P ;D ;D ;D

The unit is very important  :D
« Last Edit: May 22, 2014, 07:58:11 pm by HeavenVMX »

Offline Mick D

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Re: MOTO MATHS: We can work it out ...
« Reply #14 on: May 22, 2014, 07:58:24 pm »
1st grade maths,,,,is there a piont to this,,,,do we win something ?? or is this just suckin up valuable drinking time??

Me thinks I will go and load the two bikes I just sold,, yeap you heard right!!
Sold one last week as well,yeap never thought it would happen ::)

And something more productive than a quiz without free beers ::) would be
 to go and make room for me new Maico, oooh yeah baby, come to Papa 8) ;D
"light weight, and it works great"  :)