Rocket car

[kpknd]

I am working on something new to me, a retro design rocket car that will use 3/8" I.D. end burn motors, I did a test run on a boiler plate model and it looks promissing.

 

Will post picks and vid after compleation, hopfully the video will post better this time, it seems to be a pain sometimes.

[Sammikins]

It should be secured onto a line so it doesn't go careening off course! Kipkay tried it on YouTube using matchbox cars and Estes rocket motor.

[nater]

^^ Agreed. I did the same with Hot Wheels cars and Estes motors as a kid, it never worked as well as my 9 and 10 year old mind thought it would have.

 

Just like the CO2 powered cars you have have built in school, you will need to secure them to a line.

[Wolverine]

^^ Agreed. I did the same with Hot Wheels cars and Estes motors as a kid, it never worked as well as my 9 and 10 year old mind thought it would have.

 

Just like the CO2 powered cars you have have built in school, you will need to secure them to a line.

I also had that idea when I was a kid. Although my attempts were with pinewood derby cars... they looked like the Batmobile but rode/flew like angry wasps.

Not enough weight and traction to handle that much thrust.

Edited November 13, 2013 by Wolverine

[Varmint]

You can make some pretty good runs on a derby style car by placing eyelets on the bottom and running the line straight from one anchor post to another, with a towel or block of foam to slow the car at the end if you happen to have a sizeable thrust/weight ratio.

 

Problems I had back in my early Jetex/Estes days was line stretch, with today's braided fishing line (and the knowledge on tying braided line compatible knots) line stretch can almost be eliminated from the equation.

 

The other was wheel/axle retention, the derby cars are meant for smooth engineered tracks, not driveways or streets with cracks, pebbles, and other dangers. Best solution I found for this was to re-engineer the nail (axle) attachment by carving out a cross slot for a wooden tube filled with silicone seal to add some "give" to the axles.

 

Have fun!

 

DAS

[kpknd]

I realize there is suppoed to be a guide line to follow, but this is just for S&G's. I use a relativly low power motor so it will not go shooting accross the parking lot...like a rocket.

[Alan]

There was a guy in the '30s who put some serious rockets on the back of his bicycle - in front of the Library of Congress; as I recall he did it with a car to better success, which led to his ill-fated Washington DC trip. He was from Grand Coulee, WA, the other side of the universe in a town built by workers on the Grand Coulee Dam and sung about by old Woodie Guthrie. He had a museum until he died; his heirs sold all the old science stuff on ebay and wherever, and the building is about gone.

 

There is film of this somewhere... must look...

[SekndAmendment]

Like this?

 

 

http://www.youtube.com/watch?v=pJdrlWR-yFM