How does one measure his bowling speed ?

Square Leg

Joined: 09 April 2005
Location: Australia
Posts: 432

Posted: 26 July 2007 at 1:26pm

Haha, Well Pete is the research scientist here.

Listen to him.

But yes, it wouldn't matter at the end of the day. It is distance divided by time... think about it km per hour ---> km is a unit of distance, hour is a unit of time.

See you later Gilly! Thanks for the memories!

143no

Opener

Final warning for running on the pitch

Joined: 23 October 2006
Location: Australia
Posts: 2516

Posted: 24 July 2007 at 1:29pm

crap = fast, holy crap = very fast, standing on stumps = super fast.

Monkey see, Monkey do.

Sledger

Captain

Dickenson can marry my mother-in-law !

Joined: 08 August 2005
Location: South Africa
Posts: 15694

Posted: 24 July 2007 at 1:23pm

Let's finish this - for the laymen speed is the measurement of distance in a specific time - simple huh.

Hence miles per hour for a car or meters per second for a meteorite!

Mental disintegration works for me !!

bondy

Middle-Order Batsman

Joined: 10 December 2006
Location: New Zealand
Posts: 4976

Posted: 24 July 2007 at 1:07pm

Damn this science.

Good one Graham!

MP12

Middle-Order Batsman

Joined: 24 April 2006
Location: Australia
Posts: 4221

Posted: 24 July 2007 at 11:48am

Originally posted by STNOOR

no S isn't Speed, in equation i posted S = Displacement. that is total distance traveled.

They both mean the same thing. Just different words for each factor.

Edited by MP12 - 24 July 2007 at 12:05pm

MP12

Middle-Order Batsman

Joined: 24 April 2006
Location: Australia
Posts: 4221

Posted: 24 July 2007 at 11:33am

Originally posted by NZ_Fast

I was sitting here trying to work out what the S in the equation stood for, i cant believe i didn't work out it was speed. I always use V for velocity�

Different countries might use a different equation. In Australia we used this method. Maybe we're the only ones.

STNOOR

Short Leg

Joined: 03 July 2007
Location: Pakistan
Posts: 51

Posted: 24 July 2007 at 11:27am

no S isn't Speed, in equation i posted S = Displacement. that is total distance traveled.

Edited by STNOOR - 24 July 2007 at 11:35am

The Future Shoaib Akhter with the difference being that i will be a left hander and reverse swinging like Waqar Younis even in the early overs...hahaa :P.

NZ_Fast

Wicket-Keeper

Joined: 21 August 2006
Location: New Zealand
Posts: 1928

Posted: 24 July 2007 at 11:25am

I was sitting here trying to work out what the S in the equation stood for, i cant believe i didn't work out it was speed. I always use V for velocity

MP12

Middle-Order Batsman

Joined: 24 April 2006
Location: Australia
Posts: 4221

Posted: 24 July 2007 at 11:20am

Speed = Distance/Time

If you know the distance of your bowl divide it by how long it took to get to the other side.

It might work, get a tape measure and mark out where your bowl lands and get someone with a good stop watch and time it.

STNOOR

Short Leg

Joined: 03 July 2007
Location: Pakistan
Posts: 51

Posted: 24 July 2007 at 11:12am

Originally posted by cricketluva

no.. S = D/T

huh ?. I know i am not good in physics but that is certainly not the equatio Tongue

The Future Shoaib Akhter with the difference being that i will be a left hander and reverse swinging like Waqar Younis even in the early overs...hahaa :P.

cricketluva View Drop Down

Square Leg

Joined: 09 April 2005
Location: Australia
Posts: 432

Posted: 24 July 2007 at 7:46am

no.. S = D/T

See you later Gilly! Thanks for the memories!

STNOOR

Short Leg

Joined: 03 July 2007
Location: Pakistan
Posts: 51

Posted: 24 July 2007 at 6:19am

i think if we apply the formula
V = S/T
it should tell you the speed of the ball ?. I think this is the formula that speed guns work on too ??.

Edited by STNOOR - 24 July 2007 at 11:38am

The Future Shoaib Akhter with the difference being that i will be a left hander and reverse swinging like Waqar Younis even in the early overs...hahaa :P.

cricketluva View Drop Down

http://www.opticsplanet.net/speedcheck-radar.html

Square Leg

Joined: 09 April 2005
Location: Australia
Posts: 432

Posted: 19 July 2007 at 7:52am

Jeez, you guys pulled this one out of know where.

Yeh, you can by a speed ball, which does tell you how fast your delivery was -but you can't hit it with a bat obviously.

Otherwise get a speed gun.

See you later Gilly! Thanks for the memories!

W.G.

Wicket-Keeper

Joined: 04 January 2007
Location: United Kingdom
Posts: 1833

Posted: 18 July 2007 at 4:38pm

Originally posted by brambarr

Hi,

Did you ever get an answer on this - I work for Radio Five Live and we've got the Darren Gough cricket phone in tomorrow night from 8pm - would you want to ask Darren your questions?

Let me know

Mobile is 07809 597 753 or email garth.brameld@bbc.c.o.uk

All the best

Garth.

Has he learned to speak English yet - if not, no point as we will not understand him.

When you win the toss - bat.
If you are in doubt, think about it - then bat. If you have very big doubts, consult a colleague - then bat.

Sledger

Captain

Dickenson can marry my mother-in-law !

Joined: 08 August 2005
Location: South Africa
Posts: 15694

Posted: 18 July 2007 at 2:46pm

Ask him who's a better fast bowler than himself , I'd expect a short, sharp reply!

Mental disintegration works for me !!

brambarr

12th Man

Joined: 16 July 2007
Location: United Kingdom
Posts: 12

Posted: 18 July 2007 at 1:43pm

Hi,

Did you ever get an answer on this - I work for Radio Five Live and we've got the Darren Gough cricket phone in tomorrow night from 8pm - would you want to ask Darren your questions?

Let me know

Mobile is 07809 597 753 or email garth.brameld@bbc.c.o.uk

All the best

Garth.

Goughy

12th Man

Joined: 18 June 2007
Posts: 7

Posted: 09 July 2007 at 1:59am

This is the one I would recommend.

However, I dont quite get the fetish many people have for finding out speed or quoting speed. Most speeds people quote are inaccurate and many seem to be fixated on numbers.

Id guess that 90% of people playing below FC that quote speeds of themselves or their friends are wrong either because its complete guess work or poor equipment.

PS from my experience the speed ball is a waste of time. Whilst I am a quick bowler, the fact Ive had it regularly clocking over 90mph of 3 steps shows it isn't accurate.

STNOOR

Short Leg

Joined: 03 July 2007
Location: Pakistan
Posts: 51

Posted: 03 July 2007 at 5:17pm

I had been searching the net for articles on seam bowling lately and found an interesting article which shows you an easy way of measuring your speed. I know it might not be as accurate as they show on TV but a way of finding the speed nonetheless Smile

. I will just paste the particular section containing the method.

Originally posted by From that article

so how fast do you actually bowl? Naturally, the best thing possible to use would be a radar gun - however they're not generally widely available to clubs and schools - but there is a simple way that needs just a stopwatch and a calculator (or maths geek) to provide approximate results. Start the stopwatch when the ball is released, and then stop it again when either the batsman hits (or misses) it, then divide 45 (or 72) by your answer to get your answer in miles per hour (or kilometres). For example, a delivery timed at 1 second has travelled at about 45mph (72kph). To break the magical 100mph (160kph) barrier, the clock must register at 0.45 seconds. Once you get used to working the timer, you will get surprisingly consistent results. I've found that standing at the back of the net, either directly behind or just to the side, gets the best results.

PS: wow nice user titles! Big%20smile

...I am the 12th man huh ? lol and who's that...that mean i am not even in the team now Tongue

Edited by STNOOR - 03 July 2007 at 5:20pm

The Future Shoaib Akhter with the difference being that i will be a left hander and reverse swinging like Waqar Younis even in the early overs...hahaa :P.

TheJaffa

Short Leg

Joined: 17 June 2007
Location: United Kingdom
Posts: 86

Posted: 02 July 2007 at 1:31pm

Originally posted by Roscoe

That would explain a lot. It would also suggest that the length of the delivery must have a significant impact on the accuracy of the reading. Doppler radars only detect the component of the target's velocity going toward the antenna, and a bouncer would come out of the bowler's hand at quite a large downward angle compared to other balls, making the reading not properly representative of how fast the ball is going, if you know what I mean.

To make it more technical, the speed gun only measures the horizontal vector of the velocity. It does not measure the vertical vector.

The actutal speed = square root of [(horizontal vector)^2 + (vertical vector)^2]

In the past the average speeds were calculated. In this both vectors are taken in to account, but the speed given is the average speed of the delivery.

Avg. speed can be easily measured by measuring the time taken for a ball to reach the batsman. the number of frames of a camera will give it easily.

If you know the air resistance and the degree it slows down the ball by differentiation you could find the initial speed of the ball.

(This is for people who know what I have posted)

Calling people as arrogant, is only to show your own!

spin wizard View Drop Down

Opening Bowler

The world�s next great spinner

Joined: 21 January 2006
Location: Saint Vincent
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Posted: 02 July 2007 at 12:36am

Oh gosh, leave out the science. LOL

In troubled times, being philosophical helps a great deal, it helps you to remain sane and not do any further damage.

Roscoe

Extra Cover

Joined: 09 January 2006
Location: Australia
Posts: 501

Posted: 02 July 2007 at 12:29am

Originally posted by spin wizard

All I know is that the speeds that are showed up on the TV, is from when the ball is release and not when it reaches the batsman.

That would explain a lot. It would also suggest that the length of the delivery must have a significant impact on the accuracy of the reading. Doppler radars only detect the component of the target's velocity going toward the antenna, and a bouncer would come out of the bowler's hand at quite a large downward angle compared to other balls, making the reading not properly representative of how fast the ball is going, if you know what I mean.

It's a long way to the shop, if you want a sausage roll.

spin wizard View Drop Down

Opening Bowler

The world�s next great spinner

Joined: 21 January 2006
Location: Saint Vincent
Posts: 9453

Posted: 01 July 2007 at 11:23pm

All I know is that the speeds that are showed up on the TV, is from when the ball is release and not when it reaches the batsman. And you'll be surprise that a 90 MPH delivery slows down a lot off the pitch!

In troubled times, being philosophical helps a great deal, it helps you to remain sane and not do any further damage.

dshar

12th Man

Joined: 01 July 2007
Posts: 1

Posted: 01 July 2007 at 10:36pm

How do you actually use a speed gun? Is the speed officially measured from the front where the batsman is? At what angle?

saadadvanced7 View Drop Down

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Posts: 3938

Posted: 13 December 2005 at 1:05pm

Originally posted by zubeee

i will go with the speed gun.there are many problems and factors to be considered while getting an accurate speed.i know that speed gun isn't 100% accurate but lets not forget that it is considered as one of the standard speed measuring equipment.so whatever speed you get on the speed gun, will in-fact be your bowling speed.on the other hand if you buy this speedometer ball it�can give you a totally different result which may please you but�maynot�be as significant�when it comes to�professional cricket�.so basically you are left with a cheap toy ball�in the end.(i checked with google�but the only ball i found with a speedometer was a base ball, which has a different circumference,weight,air resistance etc. i cant trust something which isn't on the net, please send me a link or a website where i can find such a�ball).

I agree with you. It's better to buy the more expensive speed gun and get accuracy rather than buying the cheap ball which is probably not as accurate as the speed gun.

Regulation without integration leads to suicide.

Guests

Starter

Posted: 13 December 2005 at 11:09am

Originally posted by Sledger

The speed gun works using The Doppler Effect - go to any search engine to see exactly what that is.

Doppler effect... hum interesting, i thought they used it only to locate things like ships and airplanes through radars.

its just a law,so dosent really matter where they apply it. ha ha so stupid of me

Edited by zubeee

Guests

Starter

Posted: 13 December 2005 at 10:59am

i will go with the speed gun.there are many problems and factors to be considered while getting an accurate speed.i know that speed gun isn't 100% accurate but lets not forget that it is considered as one of the standard speed measuring equipment.so whatever speed you get on the speed gun, will in-fact be your bowling speed.on the other hand if you buy this speedometer ball it can give you a totally different result which may please you but maynot be as significant when it comes to professional cricket .so basically you are left with a cheap toy ball in the end.(i checked with google but the only ball i found with a speedometer was a base ball, which has a different circumference,weight,air resistance etc. i cant trust something which isn't on the net, please send me a link or a website where i can find such a ball).

saadadvanced7 View Drop Down

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Posted: 09 December 2005 at 10:21pm

Really?... I didn't know about this. $40 is quite cheap compared to the price of the speed gun.

Regulation without integration leads to suicide.

safran