That works. I needed to test an altimeter and talked to Jim Amos ( Missileworks) about it. I used a 2" diameter viewtainer with one end closed, dropped the altimeter into it, and drew the air out with my mouth. Worked like a charm.
I do basically the same thing with a Foodsaver Marinating container and my Foodsaver.
What altitude can you get with that set up? I don't have Food Saver brand. Mine is a Nesco vs-02.
I've been doing the shop vac with tiny hose adapter, hooked up to the AV bay technique, but would like something easier & "see thru". Thanks!
If you don't mind laying out the $25, the Adept VCK2 is very nice.
Worked with my Estes Altimeter.
Could not get this to work with my JollyLogic AltimeterTwo, which I think has more sophisticated launch detection.
I always use a 1 quart mason jar...
I drilled a hole in the lid for a plastic tube,,
hot glued the tube in place..
Works great...
Teddy
Test volume | 500 | cc | ||||
Syringe volume | 60 | cc | ||||
Syringe volume | System Volume | Pressure | Altitude | AGL | ||
0 | 500 | cc | 1.00000 | atm | 0 | ' |
10 | 510 | cc | 0.98039 | atm | 547 | ' |
20 | 520 | cc | 0.96154 | atm | 1081 | ' |
30 | 530 | cc | 0.94340 | atm | 1603 | ' |
40 | 540 | cc | 0.92593 | atm | 2115 | ' |
50 | 550 | cc | 0.90909 | atm | 2614 | ' |
60 | 560 | cc | 0.89286 | atm | 3103 | ' |
iirc its like 10k'. I use christmas bulbs to simulate ematchs and stick everything inside the container.
https://www.nesco.com/files/pdf/vs02_careuse_trilingual_web.pdf is your manual. It says you have a vacuum port so you could use these vacuum canisters https://www.nesco.com/products/Kitc...s/Vacuum-Canisters-for-VS-02R-Model-Set-of-3/ for testing your altimeters.What altitude can you get with that set up? I don't have Food Saver brand. Mine is a Nesco vs-02.
I've been doing the shop vac with tiny hose adapter, hooked up to the AV bay technique, but would like something easier & "see thru". Thanks!
Plastic cup, nitrile glove stretched over the top. Pull up on glove. Slowly release.
Later!
--Coop
https://www.nesco.com/files/pdf/vs02_careuse_trilingual_web.pdf is your manual. It says you have a vacuum port so you could use these vacuum canisters https://www.nesco.com/products/Kitc...s/Vacuum-Canisters-for-VS-02R-Model-Set-of-3/ for testing your altimeters.
It might be easier than using a bag and pull a better vacuum (get to higher simulated altitudes).
Bob
I tried this today, worked great. I could only get about 220 feet out of it but that should suffice for testing. Any sane altimeter will fire the main shortly after drogue if the flight never got as high as the main trigger.
Usually I test my altimeters in the air!
Enter your email address to join: