What is the Failure Mode for Exceeding a Gas Spring’s Duty Cycle?

What is the Failure Mode for Exceeding a Gas Spring’s Duty Cycle?

What is the likely first failure mode when exceeding the "cycles per minute" rating of a gas spring progressively until failure? First hand knowledge is, as always, more valuable than speculation. I would like to find out without destroying one personally…

Submitted March 31, 2017 at 05:10PM by NextPerception
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What is the Failure Mode for Exceeding a Gas Spring’s Duty Cycle?

/r/mobilerepair is having a garage sale for new Technicians to enter the field of BLD and Rework.

/r/mobilerepair is having a garage sale for new Technicians to enter the field of BLD and Rework.

Hey everyone! Greetings from /r/mobilerepair, we are a small sub dedicated to the art of repairing mobile electronics. In an effort to help our newer technicians grow in their field. We have started a recurring "garage sale" for other technicians and.. hopefully a few EE's who would like to move out old gear and tools that are unused, or who knows, maybe even pick up some new/used gear or their own!

The sale is geared toward helping the newbies. So if you have any old test equipment or rework gear that's been collecting dust. Please come and post it in our sub! There is a thread at the top for everyone to post in.

If you're a large company that is looking to liquidate workstations.

THIS WOULD BE A FANTASTIC TIME TO KILL TWO BIRDS WITH ONE STONE. Help the next generation of techs and clear out some space in your storage.

We would love to show you around our sub and show you what we are all about. It's a fun place to be if you're into rework and repair.

Examples of items to sell are.


OScopes

Power Supplies

Signal Generators

Multimeters

Fun benchtop gear

Hot air rework stations

Soldering stations.


To keep things moving quickly and to get things sold, we are capping gear at 75% of current market value. This will allow lower budget shops and technicians to be able to afford some decent gear, without breaking the bank.

I would love to see some new faces in /r/mobilerepair!

If anyone has any questions, I will 100% be here to answer any that might be had.

If you already have a few things in mind you would like to sell! Head on over and check out the main top announcement thread to post!

Thank you for taking the time to read my post, have a great day!

Submitted March 31, 2017 at 02:08PM by thephonegod
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/r/mobilerepair is having a garage sale for new Technicians to enter the field of BLD and Rework.

Reddit Challenge: Any methods of non-electric propulsion for a race car?

Reddit Challenge: Any methods of non-electric propulsion for a race car?

Looking for guidance building a racing vehicle for an engineering competition. So, to start off, I'm in a robotics and engineering group, given the challenge of building a small vehicle to compete in a race of sorts. The objective is to create a land vehicle capable of traveling 20 feet from a set point, having it reach that point as quick as possible. At the start of the timer, I am allowed to activate one lever, pull 1 pin, or trigger the start of the vehicle through some kind of simple motion, to propel the vehicle forward. Any ideas?

Here's the specifications: – No electricity (spark plugs, motors, etc.) is allowed (to begin propulsion or continue acceleration). This rules out combustion engines and batteries. – The vehicle must fit into a cubic foot box before racing, to be eligible for competing.

Thoughts: – Combustion engines aren't on the table due to a need for a spark plug. – Steam engine may be feasible, but I cannot boil water beforehand, and an open flame may disqualify me. – Best bet seems to be harnessing masses of potential energy, such as in a mousetrap car or torsion catapult. Not sure how to do that best. Any thoughts or ideas?

All rational ideas welcome, please advise. I've done my research, and I'm asking for a little help SPECIFICALLY WITH THE METHOD OF PROPULSION/STORAGE OF ENERGY. Thanks in advance!

Submitted March 31, 2017 at 01:35PM by unclefilmore
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Reddit Challenge: Any methods of non-electric propulsion for a race car?

Starting Undergraduate Mechanical Engineering at uBC in September. What should i learn between now and then which can help me in college?

Starting Undergraduate Mechanical Engineering at uBC in September. What should i learn between now and then which can help me in college?

I did IB in highschool and took Physics and Math HL which gave me a basic in non-calc based mech and emag

Submitted March 31, 2017 at 10:52AM by Dezpool
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Starting Undergraduate Mechanical Engineering at uBC in September. What should i learn between now and then which can help me in college?

Canadian looking to Obtain PE license

Canadian looking to Obtain PE license

Hi, I'm a structural engineer living in Canada, I am registered as a P.Eng in my province. I'm interested in working in the US, and I'm wondering what the steps are for obtaining my PE license. Is it as simple as writing the PE exam? Or would I have to go through the EIT training period again, even though I've gone through that in Canada? Are there any other hoops to jump through for a Canadian?

I understand the regulations may vary by state as well.

Thanks

Submitted March 31, 2017 at 09:59AM by neon_slippers
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Canadian looking to Obtain PE license

Computer science vs technical drafting and Architectural design program

Computer science vs technical drafting and Architectural design program

For Mechanical Engineering what would be a better class to take, Computer science were we learn Java or a technical drafting and Architectural design program

Submitted March 31, 2017 at 08:42AM by sportsfan2000xx
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Computer science vs technical drafting and Architectural design program