Rocket Knife -VS- Watermelon

Share this video on

What's Hot

What's New

Top Grossing

Top of the Chart


Low Elevation RC : "I've always wondered, can you actually hotglue a watermelon to something?" Uhh... Yeah, I've "always wondered" that too

Michael Dilger : Please Cut up a lipo

Karl-Emil Storm : I love your consistent uploads, hahahaha. This is so good! Greetings from Denmark!

Robert Kitchen : David I would like to see the rocket knife cutting through a DJI phantom 1, whilst hovering.

ShinyPartsUp : Found your channel shortly after discovering Flitetest. Loved you on that channel and your own channel is awesome! I love your enthusiasm. A fan from Oregon. Now, how about trying to slice some beef ribs or other bone?

Ben Carter : That energy absorption at the end needs to be more progressive. It is always going to cut through a blanket if it is cable tied to the frame. I think it could do with 2 or more frames behind each other. The first one would catch the knife and then go with it, so attached to bungees or cables that are weighted. Then that would hit a second more rigid netted frame. Slow the deceleration down like they do at Circuses or those free fall rides which have double catch nets.

Detour FPV : This is why I buy from rcexplorer. David's madness needs funding.

AeroGeek16 : Cut carbon fiber with the rocket knife!

Airborne Images : Try slicing a water balloon. The high speed should be great.

HorrifiedPilot : Cut a rocket knife with a rocket knife.

Christopher Raff : Deer: I'm going to get the hell out of here; that guy has a knife with a rocket attached to it! No way this ends well for me.

Shane Matthews : I think the reason the blanket stopped it before is because it was only mounted up top so the force of the knife made the blanket fold in on itself instead of tear straight through.

der benni : Put a gopro on the sled 😂

Daniel Tomas Jr. : Put a mattress on a cord, lead. When the rocket hits, the mattress moves but is connected to the cord. It will slow it down. The easier the better. The physics are there.

Frank deBros : 2:24 "I severely dislike standing in front of it while arming. Nothing to worry about, just a machete with a rocket." 😂 Henrick's sense of humor is perfect.

Quinten Moonen : Rocket knife vs wild deer?

foamidable : Put a camera on the sled! Very cool project.

Jack Nicholls : Slice a lipo in two.......

Karl-Emil Storm : How about mounting a hammer instead of the knife and just crush stuff. Id really want to see rocket hammer vs cinder block

williwonti : Use the rocket knife to bifurcate another rocket knife.

Ghost Ryder FPV : Hello David! May I suggest, for your next cut, a North Korean ICBM?

Márcio Senger : Cut a 6S FULLY CHARGED brand new huge LiPO

Rc Dad / Sultans of Wing : you had me at hot glue watermelon

Anas Mhz : who loves david windestal ? his such a great man

Views From Above : I've done a lot with sugar motors and seen a lot also... Please please please put more distance for safety between you and the motor.

Tyler Penny : A race quad... but replace the knife with a hammer.

John Zoidberg : Me again. This project is still so awesome! I like your videos very much and I hope to see more of them in the future :)

John Zoidberg : Try cutting another knife

g2h0 : David has always been a cut above the rest

Brandon Allen : Cut a quadcopter in half

Gustavo Hernan : You have a new sub

zzzlt : dry ice?

coab43a22f2 : 2:51

Dankoneon : Think it could split a foam board airplane down the middle?

Jamie Feldman : David, Please Please Please do spray paint cans!!!!!

ABSnyder RC : These videos are awesome David! Keep up that crazy Swede stuff! Oooo shiney!! Real nice!

DreamsCatcher101 : This should be the fate of pedophiles

Glenn Ford : ok next wacky idea, extended the track then curve it vertical and let gravity slow it down.

BLeeKiis Too : Every time I watch another episode of Rocket-Knife I think of yet more things I wanna see it take on! This time, I'd like to request a motorcycle helmet- WITH a ballistics gel head inside it... 3:) Thank you again :)

Jonesy Films : Nice David, adjoneses here, I think we all just found the solution to the North Korea threat

biker451 : What a hoot!!! Cut an iPhone and/or tablet. Maybe a stack of old phones.

Paul Aitchison : hi from Canada, David, You have far to much free time on your hands....... Love it LOL

DP ie : Isn't this a bit complicated way to cut a watermelon? I usually just lay it on a cutting board in the kitchen and use a large knife. Job done.

Marc Egli : Why the knife? The sled would probably go through the melon just as smooth.

Ehten Shane : Cut a watermelon!

SOAPSTONE BIRD : Next take the knife away and put wings on the rocket using same launching mechanism.

John Possum : How about cutting a 5# gummy bear in half?

LowLightVideos : RocketBike 🚀🚴

Hakalabakala : 100% sure it isn't copied from the backyard scientist

Mr John : coool