SEOH Water Rocket Starter Set Deluxe Single

This product is a great idea, but the implementation is so very awful that my 6 year old daughter suggested some decent engineering changes (stronger plastic, a fixed launch stem, tying in the launch release)1. The launch platform is of the thinnest, cheapest, most breakable plastic I've seen in some time. It's that kind of plastic that has no give and turns white, then breaks, even with the smallest amount of stress.2. The nut that holds the rocket vertical keeps becoming loose. We tightened it with a wrench and it isn't strong enough to even hold a 1 liter bottle, half full of water, though it is supposed to be capable oh holding double that.3. The hook that connects to the launch release broke after the second launch.4. The spar for the launch platform was broken upon arrival.5. The ground spike can barely tolerate being pushed into the ground with your hand, let alone a light mallet. You can almost see through the plastic in some spots.6 The fins are a very non-durable foam-core material and crack after just 2-3 launches in a soft lawn.I haven't been this disappointed in a product's quality in quite some time. Highly suggested to avoid it, even with an adult using it. It just doesn't hold up, even for 30 minutes of use.This could all be corrected by:1. Making the plastic twice as thick in all places. This might raise the cost by $1.2. Making the plastic a more durable PVC-like type. This might raise the cost by $2.3. Having some teeth on the launch stem, so that it doesn't just fall over with a water-filled bottle on top. This costs nothing other than design.4. Making the ground spike out of metal. A cheap sprinkler system "tie" would do, and costs 15¢ at Home Depot.5. Making the fins out of a more flexible material, such as neoprene. This costs $1 at Michael's Crafts.

This is a great and versatile kit. After gluing together the fins with hot glue, we installed them on a 2L soda bottle, filled with water, pumped it up and off it went! It was great!! We took the fins off and installed on other bottles and they all flew great. I would recommend that you have a hand tire pump that has a pressure gauge so you know how much air you are getting in there.

horrible. I gave this to my nephew for Christmas and I built it with him doing exactly as instructions state with the 'approved bottle' and on the first flight it came down and two fins broke!!!!! you think these three little Styrofoam fins are cheap enough that they can give you more than just one set? - NO!!!! they do not!!!!! so he was very upset at Christmas morning. I am throwing it in the garbage now!When it went up it was pretty cool. But came down horribly. Came down fins first which tells me that the nose should be slightly heavier. Or should have some sort of chute or something to keep nose down on return path to earth.Like I said I followed all directions and was perfect. I used the 2 liter bottle that was on their approved list. Maybe I would suggest using the 1 liter for those who are still willing to buy this. I do see that a company here on Amazon makes plastic fins and chute for this. So maybe try the 1 liter bottles that they recommend. Do not use 2 liter bottle!!

My boys (ages 6 and 4) really enjoyed making and launching this rocket. Unfortunately it only lasted three launches before the launch pad rocket retainer thingy broke. I would only recommend this if your number one goal is seeing your kids excited to build something AND you are prepared to fix broken plastic and foam fins.TIPS1.5L Smart Water bottle5 minute epoxy for fixing broken plasticCut fins a little shorter. Reduces susceptibility to breakage and doesn't not noticeably affect flight.

As others have noted, the design and implementation on this rocket could use some improvement. The good part is that the bottle nozzle and holder on the launch pad work well. The following parts broke for us - all quite quickly:- fins, every single one simply from impact with the grass on landing. I used hot glue to repair and they are now holding well- swivel hook that attaches launch rope to base - way too weak for this application, I just tied it on and left it.- launcher base leg that connects with stake. This interface doesn't work and I cracked off the leg twice trying to get the stake free. My fix, I lean over and hold it down while my child launches it. This works best on a warm day, as I get a bit of a bath out of it :-)All in all, it's way too cheaply made for the $38 they ask for it, but a bit of ingenuity and glue get it back working again. After all, this is a STEM toy, right? Learning to engineer by doing, yes? (Still, fix this please, Quest. You make some great products, but this Chinese rocket isn't among them.)

The GoodThis is one of the best water bottle launching systems out there. It launches the bottles very high and is a simple, effective system.THe badThe plastic nozzles you screw onto the bottom of the bottle are made of very cheap plastic and will crack if you screw them on too tight. Luckily you can order more on amazon.The launcher lasted for a long time until I let one of my kids pull the string. They pulled it at a poor angle and the entire top busted off. I was able to jimmy rig it so it still works. Just be careful about the angle you pull the string or you will break it.

We had 10 kids ready to shoot off their bottle rockets they had decorated. Two kids were able to shoot theirs off, and then it broke! Seriously?! I would NOT recommend buying, look at something else and different brand.

OMG we had SO much fun with this kit!! You cannot believe how far up this baby goes! The kids and adults alike will LOVE it! Fun & safe too--our 4 year old was launching it, too!