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  #21  
Old 02-23-2023, 07:57 PM
MrTwisty MrTwisty is offline
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Join Date: Jan 2023
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Quote:
Originally Posted by Scott_650
The estimated weight for the ESAM is listed in the instructions - page 6, below the launch/flight/recovery diagram - 3.1 oz/87.8 g.

Edit.

Mine, with recovery gear, weighs 3.5 oz - I donít build particularly light and mine has a kevlar leader, triple length woven elastic shock cord.


Glad you posted that.
I had a spare ESAM so I opened the package
I did not split the nose cone / motor shroud.
But all the components weighed in at 82g.

How much does glue and paint typically weigh?

As another test tomorrow I'll take this Crossfire, weigh it down to 82g externally so the parachute deploys and try another launch.
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  #22  
Old 02-23-2023, 08:52 PM
Scott_650 Scott_650 is offline
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Quote:
Originally Posted by MrTwisty
Glad you posted that.
I had a spare ESAM so I opened the package
I did not split the nose cone / motor shroud.
But all the components weighed in at 82g.

How much does glue and paint typically weigh?


Daniel, host of The Model Rocket Show podcast and rocketry blogger did a rather extensive look at the weight of paint and glue:

http://rocketn00b.blogspot.com/2016...t-of-paint.html

With his build style the paint added nearly a 25% of the rocketís final weight.
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  #23  
Old 02-24-2023, 01:28 PM
MrTwisty MrTwisty is offline
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Well 25% is what my numbers are working out to.
I'm surprised Estes' numbers are so far off- 82 grams of parts working out to 87 grams of finished rocket seems ludicrous even if you're not filling wood grain or spirals.
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