Slinger tennis ball machine

Nostradamus

Bionic Poster
The Proton is TOO LIGHT and the machine will jump every time a ball is shot out. If you set a program on your preferred setting after a few balls have shot out those setting will not be where you want to the ball to go, be warned. Proton needs to be heavier so the machine does not drift while launching balls out.
small changes in ball position and flight is goo thing though right ? to simulate the real match situation
 

N54TT

New User
I’m in the market to buy my first ball machine and was looking at the Slinger. I don’t have anyone to hit with these days and just wanted to get out on the court swinging the racket again. I was just about to order it when I found out my friend happened to pick up the Slinger through the kickstarter. So I had the chance to borrow it for a few weeks before buying one myself. I didn’t know much about it or ball machines in general. My first impression after the first ball shot out was....wow thats quite a bit of top spin and I only had the speed set to the middle.

A few weeks later, over 1500 balls, quite a bit of research and trying to use it as a teaching aid for my daughter....here are my thoughts. There are things you can do to manage the topspin. Ie place it on or infront of the service line, dial down the speed to reduce the topspin and adjust the launch angle. But in the end there is still quite a bit of topspin that can’t be adjusted because of the single throwing wheel. I’d rather have it shoot from the baseline with more speed and more realistic (less) topspin. The oscillator is slow, only sweeps back and forth and is an extra piece you need to carry. It’s still nice to use and would still suggest getting it If you want some sort of variability. Battery life was never an issue. Remote is light, small and worked fine. The bag itself is pretty big. But I was able to easily fit three rackets, towel and a big hydroflask in the bag. It cuts down on how many different things you need to carry/wheel from the car. All of that plus the 72 balls i kept in it adds weight to it...but it still was not difficult to lift in and out of my trunk. People complain about the canvas and zippers....but I don’t think they feel cheap and seems like it should last.
Overall I think if you’re on a budget, are okay with its short comings, want something to groove your swing or just get out to swing and get a workout, but don’t have a hitting partner...the Slinger is a great option. Initially that’s what I thought I wanted. If you’re looking for anything more than that, want more speed, variability in spin and drills...than you will probably want to look for something else.

After much thought I finally placed an order for my own machine....the Spinfire Pro2 V2 with an internal lithium battery. The price isn’t even in the same realm as the slinger and is more expensive than even the other machines I was looking at (proton,lobster, spin shot). But after actually using the Slinger I learned what was important to me. I wanted internal oscillation, random variability in vertical and horizontal shots, ability to change speed/spin and other settings with a remote and lastly a lithium battery. The two things that set the Spinfire apart from the other machines I was considering were the internal oscillation and option for a lithium battery. I know it can be controversial whether Internal vs external oscillation is better and if a lithium battery is worth the $$. But it’s a personal decision and I have my reasons. Will post a review in the Spinfire thread after I get it.
 
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LaZeR

Professional
... Battery life was never an issue. Remote is light, small and worked fine. The bag itself is pretty big. But I was able to easily fit three rackets, towel and a big hydroflask in the bag. It cuts down on how many different things you need to carry/wheel from the car. All of that plus the 72 balls i kept in it adds weight to it...but it still was not difficult to lift in and out of my trunk. People complain about the canvas and zippers....but I don’t think they feel cheap and seems like it should last. Overall I think if you’re on a budget, are okay with its short comings, want something to groove your swing or just get out to swing and get a workout, but don’t have a hitting partner... the Slinger is a great option. ...
Like the Slinger for reasons stated above - Satisfactory for Low Price, gets the job done, good workout, fit in EVERYTHING you need, one trip from car to hitting on d'courts & then back again, PLUS just leave it in the car to re-charge. However, I fit in wayyyy more than 72 balls - mebbe should reduce # balls (?).

After much thought I finally placed an order for my own machine....the Spinfire Pro2 V2 with an internal lithium battery. The price isn’t even in the same realm as the slinger and is more expensive than even the other machines I was looking at (proton,lobster, spin shot). Will post a review in the Spinfire thread after I get it.
Mind posting the total cost with the stated specs for the Spinfire Pro2 v2? And also, plz post your review here.
 
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N54TT

New User
Like the Slinger for reasons stated above - satisfactory for low price, gets the job done, good workout, fit in EVERYTHING you need, one trip from car to hitting on d'courts & then back again, PLUS just leave it in the car to re-charge. However, I fit in wayyyy more than 72 balls - mebbe should reduce # balls (?).

Mind posting the total cost with the stated specs for the Spinfire Pro2 v2? And also, plz post your review here.
Another Neat feature I didn’t mention is that it comes with a usb that you can use to charge your phone.

It can definitely hold more than 72 balls but I only bought one case of the triniti balls to test out.

You can price it out the Pro2 V2 on the Spinfire website. It will vary depending on what battery option, accessories and if you get the extended warranty. Also if you’re in NY, will have to pay sales tax. The cheapest will be 2399 plus shipping. Will post a comparison after I test it out. I’m hoping it ships out next week.
 
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N54TT

New User
Like the Slinger for reasons stated above - satisfactory for low price, gets the job done, good workout, fit in EVERYTHING you need, one trip from car to hitting on d'courts & then back again, PLUS just leave it in the car to re-charge.
Sorry I must have skipped over this. HOW do you leave it in the car to recharge the battery? Although the slinger battery isn’t external, there’s only 4 screws and is relatively easy to remove. Do you remove the battery every time you charge it?
 

LaZeR

Professional
Sorry I must have skipped over this. HOW do you leave it in the car to recharge the battery? Although the slinger battery isn’t external, there’s only 4 screws and is relatively easy to remove. Do you remove the battery every time you charge it?
Think the last point & question might be moot in this case - do that ONLY if/when the battery might need to be replaced.

As for recharging, my garage has electric outlets. Just leave everything in the car, unzip the re-charging compartment, connect the charger, get an extension cord, & plug it in.

Don't have many reasons to NOT leave everything in the car 24-7-365, other than to clean/vacuum out the bag, ball feeder, etc, or when going on a road trip, but then again sometimes I take it with me to other cities just in case I can get some tennis practice in coz my gf sux at tennis so why the hell not?! (Orlando & especially Atlanta has amazing tennis scenes & every1 I came across wants to buy a Slinger after seeing it in action). I even always keep the charger & extension cord in the car, & also basketball, but try to remember to always remove tennis racquets, and keep em in the house, or hotel room, etc.
 
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N54TT

New User
Think the last point & question is moot in this case - do that ONLY if/when the battery might need to be replaced.

As for recharging, my garage has electric outlets. Just leave everything in the car, unzip the re-charging compartment, connect the charger, get an extension cord, & plug it in.

Don't have many reasons to NOT leave everything in the car 24-7-365, other than to clean/vacuum out the bag, ball feeder, etc, or when going on a road trip, but then again sometimes I take it with me to other cities just in case I can get some tennis practice in coz my gf sux at tennis so why the hell not?! (Orlando & especially Atlanta has amazing tennis scenes & every1 I came across wants to buy a Slinger after seeing it in action). I even always keep the charger & extension cord in the car, & also basketball, but try to remember to always remove tennis racquets, and keep em in the house, or hotel room, etc.
I wasn’t trying to make a point and know it should only really be removed if it needs replacement:). I just wanted to clarify so that others reading, who might not know much about the Slinger, don’t think it has an external battery...that you can just take inside to charge and leave the bag in the trunk.
 

N54TT

New User
Took the Slinger out for the last time yesterday. My Spinfire should get here Friday and will drop the Slinger back off at my friends on Saturday. I didn’t use it much myself yesterday. More so as a teaching aid for my younger daughter. It really drove home how the Slinger isn’t the best for beginners. Even at slower speeds there is still a decent amount of topspin and the ball still kicks. Not being able to adjust spin is a huge downside with regards to using it with beginners. Even if you dial down the speed to have as minimal topspin as possible....it shoots so slow and you really have to play with location of the machine and launch angle.
 

2nd-srv-ace

New User
Took the Slinger out for the last time yesterday. My Spinfire should get here Friday and will drop the Slinger back off at my friends on Saturday. I didn’t use it much myself yesterday. More so as a teaching aid for my younger daughter. It really drove home how the Slinger isn’t the best for beginners. Even at slower speeds there is still a decent amount of topspin and the ball still kicks. Not being able to adjust spin is a huge downside with regards to using it with beginners. Even if you dial down the speed to have as minimal topspin as possible....it shoots so slow and you really have to play with location of the machine and launch angle.
Agree. I am no beginner and it took me a few sessions to get used to the topspin. It's been about three months since I started using it and I am really liking it.
 

JEDI MASTER

Semi-Pro
Agree. I am no beginner and it took me a few sessions to get used to the topspin. It's been about three months since I started using it and I am really liking it.
been playing off and on for the last 40yrs.. more so in the last 10yrs....

when i had my machine..never got used to it.... only took me 2hrs to sell it...

the only feature I like is the Ball Boy Mode... :-D
 

2nd-srv-ace

New User
been playing off and on for the last 40yrs.. more so in the last 10yrs....

when i had my machine..never got used to it.... only took me 2hrs to sell it...

the only feature I like is the Ball Boy Mode... :-D
Ball boy is the only feature I have not used. I just grab a few of the balls I have hit then serve them after all the balls have been thrown from the machine; rinse and repeat
 

N54TT

New User
My Spinfire Pro 2 V2 came in the other day and got to do a quick test. Here‘s my initial impressions vs the Slinger.

Build wise. The machine part of the Slinger is all plastic. My friends machine already had a broken battery tray And he didn’t really use it that much. Spinfire‘s external body is plastic, but the frame on the inside and everything else is all metal. Spinfire is not much heavier than the slinger(loaded with balls, rackets, water etc). Not sure about the Slinger, but Spinfire warns you to not lay it on its side. The Slinger will only fit in the trunk of my model 3 if I lay it on its side. Since I couldn’t lay the spinfire on its side, I was worried it wouldn’t fit in the trunk. But it actually fits pretty easily and sits perfectly in the lower compartment of the trunk.

Use of the machine: Slinger is the first machine I’ve ever hit on and Spinfire now the second. It‘s highlighted how much of a disadvantage the single throwing wheel is on the Slinger. Being able to now control spin is HUGE. Im able to set it up perfectly for both my daughter (beginner) and myself...without any compromises. The Slinger is also just slower, which was expected being the differences in advertised top speed. Again something that I thought wasn’t as big a deal, until I hit on the Spinfire. Being able to fully control and change all settings from the remote is really nice. The rotation of the Spinfire is much faster. Random horizontal mode is great....ESPECIALLY with the internal rotation. The internal rotation is a great feature and I’m glad I went with the Spinfire over some of the other machines I was looking at. The feed is much more consistent on the Spinfire, even until the last ball. The feeder on the slinger would often get hung up, and I would be standing there waiting for another ball to come. The slinger also never really empties all the balls. More often then not there was always a ball left over...sometimes a few....not the case with the Spinfire so far.

The Spinfire has opened my eyes on what I was missing out on and how much of an impact the disadvantages of the Slinger really was for me. I still think the Slinger is a good budget machine but does come with quite a bit of disadvantages. Not something I was willing to put up with...even considering the low price.
 
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LaZeR

Professional
My Spinfire Pro 2 V2 came in the other day and got to do a quick test. Here‘s my initial impressions vs the Slinger.
Can you post: a) your total price for the Spinfire + shipping + tax, and b) Spinfire VERSUS loading everything you need into the Slinger Bag affording only one trip from car to courts & back?
 
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CosmosMpower

Hall of Fame
Think the last point & question might be moot in this case - do that ONLY if/when the battery might need to be replaced.

As for recharging, my garage has electric outlets. Just leave everything in the car, unzip the re-charging compartment, connect the charger, get an extension cord, & plug it in.

Don't have many reasons to NOT leave everything in the car 24-7-365, other than to clean/vacuum out the bag, ball feeder, etc, or when going on a road trip, but then again sometimes I take it with me to other cities just in case I can get some tennis practice in coz my gf sux at tennis so why the hell not?! (Orlando & especially Atlanta has amazing tennis scenes & every1 I came across wants to buy a Slinger after seeing it in action). I even always keep the charger & extension cord in the car, & also basketball, but try to remember to always remove tennis racquets, and keep em in the house, or hotel room, etc.
Until the made in china electronics short out and catch your car and garage on fire.
 

texastova

New User
I did use the Spinfire Pro V2 from my neighbor in Austin Texas for about two months and the machine is just ok. I got my Proton and quite happy with it.

Jonah Harley, HydrogenSports and Proton inventor, has degrees from Stanford, UC Berkeley and CalTech. He has over 50 granted patents, and also the inventor of the Apple Pencil. That seals the deal for me with the Proton.
 

N54TT

New User
Can you post: a) your total price for the Spinfire + shipping + tax, and b) Spinfire VERSUS loading everything you need into the Slinger Bag affording only one trip from car to courts & back?
A) Spinfire costs significantly more. No doubt about it. It starts at 2399 plus shipping and tax if you live in NY. Total cost will change depending on what options you get and where you live. Just price it out on their webpage to get an accurate cost for your specific case.
B) Not much difference in car to courts and back. With Slinger I had 3 items to carry/wheel. Slinger, external oscillator, hopper(even with the balls in the bag still need the hopper to pick up the balls). You could use the included ball tube.. but I found it quicker to use a hopper. With Spinfire still had 3 items to carry/wheel. Spinfire in one hand, tennis bag over shoulder and hopper in the other hand. The courts I play at has the parking lot right next to the courts..so it’s not a huge deal if I ever had to make more than one trip.


I did use the Spinfire Pro V2 from my neighbor in Austin Texas for about two months and the machine is just ok. I got my Proton and quite happy with it.

Jonah Harley, HydrogenSports and Proton inventor, has degrees from Stanford, UC Berkeley and CalTech. He has over 50 granted patents, and also the inventor of the Apple Pencil. That seals the deal for me with the Proton.
Proton was at the top of my list too. Especially for the price compared to the Spinfire. But 1) I wanted internal oscillation. 2) I’m all apple, use my phone for everything including my car lol and like how you could program different drills. But I don’t want to carry and use my phone on the courts....to change settings etc. I can’t even tell the Slinger or Spinfire remote is in my pocket. Being able to program specific drills wasn’t even at the top of my priorities. I really just wanted random variation...which brings me back to the internal oscillator. 3) Wasn’t happy with the warranty 4) skeptical on how robust the front elevator peg and oscillator mechanism is...which brings me back to #3.
All that being said...if something like the proton had internal oscillation I might have gotten it instead lol.
 
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