K'NEX Dragon's Revenge Thrill Coaster - 578 Parts - Roller Coaster Toy - Ages 7 & Up

My 7 year old son and I built this together. After the first few pages of instructions, he told me "I've got this. I can do this by myself." Well, that was a somewhat optimistic assessment, but after puzzling through the assembly booklet (why are the pictures have to be so small?), we finally got it assembled and working. Once that happens, it's a perpetual motion machine and very satisfying. I agree with the reviews, that having a few extra pieces on hand would be helpful. But, apart from these few criticisms and the reason I was motivated to write this review, was the sheer joy on my boy's face when he saw the little roller coaster car make its first complete loop around the track, latch on to the chain drive for the vertical trip back up to the top and then down and around again . . . and again. Yes, I also thought that there must be a camera in the front of the little car, but for a 7 year old, the animated images on the K'nex app were as good as real. I highly recommend this. A tedious build, but very rewarding and a lot of fun.

My friends kids got this from me for Christmas. They were suuuper into it. I ended up going most of it for them. I played with knex growing up and they used to be a lot more sturdy. Now they are smaller and more breakable

Was missing 5 pieces but found ways to work around it. Took about 2.5 hours to build with my daughter. I ended up finding some things I did not like and making some changes to the original design which suited my lack of 5 pieces. It runs just fine though and provided hours of fun for an inexpensive but cool and educational toy. I will probably take it down in a few weeks and give to a friend, then I may just buy another... Addition: After a few hours of running it stopped getting through the loop. I used some mineral oil on the car wheels and its fantastic now, and much quieter than it was when new. Id recommend it whether youre getting through the loop or not

This is a pretty cool building set for our first k’nex product! I purchased this for my best friend’s son (11) and it is pretty advanced to build. It took both of us (age 37 and 50) about a total of 3 to 4 hours, with some breaks to get this thing together...my buddy is the smartest guy I know and several times we had to study the diagrams within the instruction book to understand what we were supposed do and where to connect the parts. Some of the instructions seem like you need a degree in engineering to understand...just be patient!

This is a super fun Knex set. However too complicated as an independent build for our 9 year old dragon loving daughter. The instructions aren’t all that clear, and it took my husband and I around 5 hours helping her assemble. Once it is up and running, it is entertaining! We definitely won’t be disassembling this set because it took so darn long to put together.

Love K'nex, but after my son and grandson spent a wonderful afternoon putting it together, we found that the motor was broken. We checked our batteries, and they were not the problem. I contacted the company, and they are sending me a replacement motor. Great toy, and great service from K'Nex

-Pieces are not compatible with regular Knex. -Had to spay the cart with WD-40 to get it to do a full circuit with pushing it. My son got a roller coaster Knex set from his grandmother for Christmas a year or so ago. Unfortunately it was from a second hand store and was missing some piece. This did not deter my from from building as much as he could and then breaking it down to do it again. He did this over and over for a year so I decided it was time to get him a complete set so that he could build a coaster and also hoped that he could use the pieces from this set to complete his other set. He waiting anxiously for this to come in the mail and when it came he opened it up as quick as he could at which point we discovered that the pieces in this set were tiny and not compatible with the regular Knex. I figured oh well at least he gets to build a coaster that will work. When I came home from work he had been working tirelessly on his coaster and it was now complete. We turned it on and he had pure excitement as it worked its way up the chain to the top. The coaster then proceeded down all the way to the loop at which point it did not have enough momentum to go around the loop. I figured he must had done something wrong when he built it, cause why would they engineer a set that doesn't do a full loop without exterior force. I then took it apart and rebuilt it together with him. Turned it on and again did not complete a full loop. So I then took it apart and did the alternate build. Once again the cart got stuck right before the curve that goes under the track. At this point, I had to take the cart into the garage and sprayed it with some WD-40. Finally the cart did a full circuit over and over again without requiring my son to push it. Have not rebuilt the main build to see if it does a full circuit yet but I will update in the future. Long story short. There is no advertising that the pieces are not compatible with regular Knex so if you want to add these pieces to an existing collection you are out of luck. Second you will probably need to grease up the cart to get it to actually work, do a full circuit, so pick up some WD-40 if you don't already have some.

This set is great. Its been running continuously for an hour and my son is glued to it. The shaft that holds the gear that cranks the dragons wings was deflecting, so I took some extra K'nex I had to turn it from a cantilevered shaft to having support on both sides of the gear. Made it a lot quieter. I wish K'nex made some of the giant sets they used to.

Mijn zoon van 8 jaar is met hulp van mij en zijn oudere broer uren zoet geweest met dit te bouwen. De instructies zijn helaas op bepaalde slecht te volgen. Bijv wat is de boven of onderkant van de rails? Welke precieze lengt van de onderdelen heb je op bepaalde plekken nu precies nodig? En hoe zit de tekening nu echt in elkaar. Hierdoor looping in eerste instantie verkeerd gelegd. En zo nog wat issus. Ketting was te lang. Linkje eruit gehaald, toen ging het. De kleine onderdelen op lastige plekken hebben zo nu en dan pijn aan vingers en handen opleverd. Mijn zoon is een doorzetter dus haalde dingen uit elkaar en ging dan weer verder, ook als hij zich had bezeerd. Maar had me niet verbaasd als hij ergens was afgehaakt....de baan heeft het helaas maar 2 avond gedaan. De volgende ochtend haalde het karretje de looping steeds niet. Meerdere dingen geprobeerd aan te passen, niets hielp. Zoon erg teleurgesteld na alle uren die hij erin heeft gestopt. Ook 'pakt' het karretje de rails/loopband helaas niet uit zichzelf. Het gaat te snel en dan botst hij als het ware. Soms deed hij 2 rondjes achter elkaar. De rails zijn ook wat slapjes. Daardoor komt er misschien te veel speling bij gebruik. Al met al had ik hem een leukere ervaring gegund dan dit.

孫にプレゼントし、考えながら形になるものを作ってくれました(^｡^) ありがとうございます😊

Missing parts, damaged box. Seems like it was used and returned. Waste of $100 and sucks because Santa brought this for him.

Llego en tiempo y forma, se ve completo, y ya será cuestión de volver a postear una vez que mi nena lo arme, les estaré comentando al respecto.

It is very hard to build even for us adults, we also found because you have to bend the track yourself to get it to go round that no matter what we did the cart stopped before the last part of the track. Bought it for a boy with autism and in all honesty it lasted 5 minutes it's very flimsy.