REV + SPEED CHECK | Easiest Way❗

what's up guys Bruns Nicks back and I see this question all the time especially on Reddit can I get a speed rev check what's my revs what's my ball speed I need a speed check I need a REV check I'm here to help you out I'm going to show you step by step how you can figure out your ball speed and your rev rate with using only your smartphone but before we get to all that please subscribe to my channel if you haven't already now let's calculate your revs and your ball speed all right so you want to know what your rev raate is you want to know what your ball speed is this is important for picking out bowling balls and especially when you ask questions about hey what ball should I get Bruns Nick what ball do you recommend that I throw well there's some questions I'm going to ask you how hard do you throw it what's your rev rate so first we need to figure out what your Pap is so I've already found mine and I've placed a piece of tape on that spot so you can do that by either checking it with tape but you got to get this ball started on that spot so so you always verify that after you mark it if you need to move it around a little bit you can do that so let's throw a shot it's only important is the spot off your hand so right at the point of release that's your Pap now the ball's going to flare so it's going to come off of that spot now I often ask oh hey how should I measure my Pap should I use a plastic ball should I use a Ure same ball I mean typically a lower flaring ball is fine but if you're using a high-speed camera with your phone you don't need to have that how should you set up your camera for this you know not everybody has a tripod not everybody has fancy equipment most people have an iPhone well I like to use the shoe method it works fine what you want to do is I set it up horizontally so that I can get the whole Lane in question there you can go vertically whatever as long as you get the point of the the foul line and you get all your rotation so using a shoe very easy just set up your shoe the shoe tripod by Bruns Nick so the next thing we'll need to do is put a piece of tape from the pap over the fingers this will give us a line we can look at on video and make it very easy to decipher the rotation of the ball so let's do that so you can use either masking tape or if you have white tape in your bag you can make it into a line all you need is something that is going to stand out from the ball so you'll want to use a dark ball that way the white tape will be able to show up easier on camera so we're just going to take the tape we're going to cut it in half long ways like I said it doesn't have to be pretty we just need to get that reference line on the ball so from the pap to the top of the fingers somewhere it doesn't really matter you have your reference line going from your Pap to there now we're going to record the next shot in high speed now I'm going to film on my iPhone in 120 frames per second you're going to have to pay attention to your frame rate in this example all frame rates will work but the higher frame rate you can use the easier will'll be able to count your rotations and more accurate the higher you go so I recommend if your phone has 240 frames use that 120 frames will work just as well this is going to get you a roundabout number for your RPMs so in this example I'm going to use 20 frame rate and we're going to throw a shot and calculate the RPMs we're looking at the time on our iPhone and the edit feature here so we need to look at two points here the point from where I released the ball right there now my Pap is pointed at 9:00 on a :00 okay and the time is 1805 so we need to do one revolution of the ball to see how long it takes in time for one rotation so that it's exactly at 9:00 so there's close 1822 1821 is just a little bit before 1822 is after so it's roughly .65 so. 165 TimeWise seconds to do one full Revolution so now we got to go and do some calculations so we're going to take 60 / by 165 and that's going to give us our rev rate there 363 RPMs off my hand so that's how we calculate rev [Music] rate so let's do one more example I'm going to lower the Rev rate and I'm going to film at 240 frames per second so this is going to give us the most detail frame by frame and give us the most accurate rev rate you can off your hand so let's do that all right so this is 240 frames per second and I am going to drop the Rev rate a little bit and see all right so we need to look again the point of time where it's off my hand at 9:00 1712 so 17.12 full rotation is done at uh 1729 is close 30 is too much so we're going to cut that in half so it's going to be7 5 so now we're going to come back over to calculator 60 ided by 1 7 5 342 RPMs so that's going to get your idea of how you throw with that so the next important spec is ball speed and there's a lot of confusion when it comes to ball speed when people ask me questions they say hey Nick I have a low ball speed I'm only 12 mil per hour hour but that is on the monitor so the monitors are going to give you the m per hour of your ball at the pin so the ball's already slowed down another thing that people look and maybe get wrong is they calculate the total time it takes from the ball to get off your hand all the way to the pins and they calculate the speed based off the entire distance that's okay if you want to know your average ball speed nothing wrong with that but what I'm more concerned about is your launch speed the ball B speed that's off your hands that's the most important thing so we're going to look at two different things then I'm going to show you the calculation to figure out your launch speed which is I think the most important thing so we're going to use a reference of the third Arrow the third arrow is exactly 15 ft from the foul line to the third Arrow so we're going to throw two different shots we're only going to use 120 frames per second on high speed here this is less critical to go high speed but it'll make it easier for you to get the calcul correct so let's throw two different shots two different speeds and we'll show you the calculations along the way all right first scenario I'm going to throw my normal speed somewhere around the third Arrow just so we can get an idea of what my launch speed is in the first 15 ft all right so we're going to look back at the iPhone we're going to find the calculation here we're going to find the time it takes to get off the hand and the third Arrow so we're going to note the time right there you can kind of see the shadow 3267 we're going to take the time it takes to get all the way to the third Arrow so 55 seconds it takes to get from that point to that point so 0.55 seconds so we're going to go in the calculator and so we're going to figure out the 15 ft of travel and and the time it took to travel that so 0.55 so now we got 2727 ft per second so we need to take it a step further to go into this calculation how many seconds are in an hour there's 3600 seconds in an hour so we multiply that feet per second and we multiply that 3600 seconds per hour and that's going to give us the number 998,199 and we're going to divide that number by the amount of feet in a mile cuz we're trying to calculate miles per hour so we're going to calculate 5280 cuz there's 5,280 feet in a mile and that'll give us our launch speed of 18.5 n milph pretty simple [Music] right in this last scenario I'm going to throw it hard hard and high right at the third Arrow as hard as I can we're going to see how hard I can actually throw it off my hand and we're going to get the calculation so just to see that the calculation works and it's not a fluke Let's uh let's throw one hard right at [Laughter] it yes that's going to start bowling like that from now on we're look at two points here the point from 2919 off my hand there you can see the shadow over the foul line and to the point of the third Arrow at me get it look I'm on my toes there I'm in the air 299 and we are at the third Arrow we're going to call it right there so 2964 so that's .45 seconds let's do the calculation all right so 15 divided by 045 equals 33.33 feet per second okay so we're going to multiply that by 3600 seconds in an hour that's going to give us 120,000 divided by 5,280 ft in a mile that gives us 22.72% so that's all today for how to calculate your rev rate and your ball launch speed I think those are the two critical numbers you need to know when you're talking about hey what ball should I get this is how I throw it it's good to have that information handy ball speed rev rate obviously there's a lot more that goes into it you know with your tilt axis rotation primarily I'm most concerned with your ball speed off your hand and your rev rate off your hand so if you have any questions comments please put them down below if this video helped you in any way please subscribe helps me out a lot talk to you guys soon see you in another video

Channel: BrunsNick

Views: 44,222

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Id: dU8YiC36sY8

Length: 11min 40sec (700 seconds)

Published: Wed Jan 24 2024