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A Handy Little Scale

Getting accurate weights of individual parts is important when choosing a motor for a rocket and for modeling and simulating a rocket in Rocksim or OpenRocket. For larger rockets, especially, it is sometimes difficult to weigh parts on a flat scale. So, here’s something else I bought from Amazon.com and “re-purposed” for rocketry use. It’s a “Digital Hanging Scale” that’s commonly used for weighing fish. It’s small, a little larger and heavier than a deck of playing cards, and cost less than $20. I’ve found it handy for weighing parts of larger rockets and it’s small enough to carry to a launch just in case you need to weigh something onsite.

 

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PayloadBay.com’s Online Rocketry Tools

I received an email a couple of days ago reporting a problem with one of the Online Rocketry Tools at PayloadBay.com. It turns out that all of the tools were broken due to an error in restoring a backup of the web site.

I’ve fixed the problem and the tools are now working again.

In the future, I plan to move to tools to RocketReviews.com. At RocketReviews.com the tools will receive more exposure and will be easier for me to maintain and enhance. But, for now, you can access the following tools at PayloadBay.com:

Centering Ring / Motor Mount Tool

The Centering Ring / Motor Mount Tool prints a template for a centering ring or motor mount. The template can be printed actual size. The parameters you enter to define the ring match those used by Balsa Machining Service which makes this tool useful for ‘visualizing’ a center ring or motor mount before ordering it

Continue reading PayloadBay.com’s Online Rocketry Tools …

Print Flight Cards at Home

A new feature of RocketReviews.com is an online tool for printing Flight Cards at home. The Flight Cards tool generates a PDF file which you can download and print before a launch. To save time at the launch, you can enter your name and other information that so that the cards are pre-filled with the supplied information. Visit http://www.rocketreviews.com/print-flight-cards.html to try out the new Flight Card tool.