Month: October 2016

Bi-Weekly CAREERS Mega-Thread [Oct 31 2016]

natewestervelt, Leave a comment

Bi-Weekly CAREERS Mega-Thread [Oct 31 2016]

Welcome to /r/engineering's bi-weekly career mega-thread! Here, employers and prospective employees can post about job offerings/wanted ads! Network with your fellow engineers in this thread, and see what kinds of jobs are available! If you are an employer, leave a comment here and be ready to answer any clarifying questions prospective employees might have. If you are looking for a job, give a description of your background and expertise and what kind of work you are willing to do. Please sort this thread by NEW to find postings that have gone unanswered.

Please check out /r/ForHire for more!

Submitted October 31, 2016 at 06:05AM by AutoModerator
via reddit http://ift.tt/2e4FmKc

Bi-Weekly CAREERS Mega-Thread [Oct 31 2016]

Variable Frequency drive (VFDs)

natewestervelt, Leave a comment

Variable Frequency drive (VFDs)

Just wondering if anyone has experience with centrifugal pumps using VFDs. Company wants to try 1p->3p VFD to control 1p and 3p pumps from a 1p source.

Ive used a VFD briefly in school but never got to check the long term effects. Im hearing a bit about VFDs being bad for the pump lifespan, heating, and efficiency loss (converting1p->3p).

Is there a better way to limit an oversized pump output (cant be sized down) aside without wasting so much power? Comments?

Thank you in advance!

Submitted October 31, 2016 at 04:16AM by raptorial
via reddit http://ift.tt/2eTeVIY

Variable Frequency drive (VFDs)

help finding part for leaning kickbike

natewestervelt, Leave a comment

help finding part for leaning kickbike

High school engineering student here. As a recent project, I'm trying to create an electric three-wheeled kickbike that has two leaning wheels in front as well as the ability to steer said wheels left and right. I have worked out a design in which the leaning and steering will be controlled by a single spindle that can lean/rotate to control both systems. The only problem is that I cannot locate a part to connect the spindle to the leaning/steering mechanisms. In order for it to work in my design I need a part that allows the spindle to rotate but also tilt around 15-30 degrees left and right. I was initially thinking pillow blocks, but they wouldn't allow the tilting. Any ideas?

Submitted October 31, 2016 at 12:29AM by raybradbruh
via reddit http://ift.tt/2f3l6eD

help finding part for leaning kickbike

Air Emissions Control Technology HELP

natewestervelt, Leave a comment

Air Emissions Control Technology HELP

I'm taking part in a design competition and in my schooling we don't have air pollution classes. I have a stack that is exhausting at 4000 scfm with Chromium Compounds or Nickel Compounds. I'm trying to find control technologies that will pass standards. I know wet scrubbers with mesh pad eliminators work. I need to get cost estimates for them and am having no luck. Any help is appreciated!

Submitted October 31, 2016 at 01:23AM by JAHammermeister
via reddit http://ift.tt/2eL3UvS

Air Emissions Control Technology HELP

Student struggling with some courses… any advice?

natewestervelt, Leave a comment

Student struggling with some courses… any advice?

I'm at my second year into a bachelor's in mechanical engineering. Getting pretty good grades so far… except in maths. I've passed 1 (basic derivatives and integrals) out of the 4 required courses and had to abandon 2 of them so far because I simply could not bring myself to understand it all. This really troubles me because I can't see myself going into an other field and it seems like quite a big hill to go over. Does anyone who has been in a similar situation have any tips or advice on finishing those damn courses?

Submitted October 31, 2016 at 01:28AM by vedo1117
via reddit http://ift.tt/2f3gJjm

Student struggling with some courses… any advice?

Consumer product design guides

natewestervelt, Leave a comment

Consumer product design guides

Hey all,

Trying to get up to speed on consumer product design. I'm starting to notice that consumer products have a lot of particular design elements that get recycled that I'm not familiar with coming from machine design. Are there any resources to get started?

Submitted October 30, 2016 at 08:42PM by lukepighetti
via reddit http://ift.tt/2fleYlb

Consumer product design guides

Young Electrical engineers, how did you get employment? (UK)

natewestervelt, Leave a comment

Young Electrical engineers, how did you get employment? (UK)

I've tried:

Indeed Applying through email Letters (even to the directors home address) – stalkish but it got me 2 interviews. Calling up through yellow pages Applying for apprenticeships Searching for internships (rare and none in my area) Saying I'd work for free Searching for volunteer work (there are never any in engineering)

What is the normal route of getting into the industry? I don't have a degree in EE, only a HNC, but I've tried my ass off to get this job, have never been given the chance, and when asking older engineers or teachers, they say you need to apply for jobs like I haven't been doing it, assume I don't know that.

What is the normal way that works?

Found the mistake I was making was applying for Electrical Engineer roles as I didn't see the Electrical Technician roles on indeed, not experienced enough or had the degree (only a HNC) so they wouldn't give me a chance.

Electricians would never give me a chance regardless of what I do, I think most older electricians don't like or care if young people are given a chance so don't really want to do that.

Seriously, I would pay anyone on here 5% – 10% of my salary for a year if they got me a placement, is anyone here in south england that I can make connections with?

Submitted October 30, 2016 at 08:58PM by Budgie10
via reddit http://ift.tt/2f3IZCl

Young Electrical engineers, how did you get employment? (UK)

X-post: Any experience 3D printing plastic clasps/clamps that deform around a tube?

natewestervelt, Leave a comment

X-post: Any experience 3D printing plastic clasps/clamps that deform around a tube?

Hi everyone! I'm going to be printing a deformable clamp/clasp that will be a semi-circle that wraps around shower head pipe. Does anyone have a good rule of thumb for how complete the semi-circle should be to find the balance between the plastic not breaking, but still having sufficient holding power on the tube? Also, any insight into optimal clasp thickness? I made a quick sketch of a cross-section showing what I'm talking about. Cross-hatched area is the 3D printed clasp. http://ift.tt/2f3JwUy

Standard shower head pipe is 1/2" NPT if that helps.

Any experience or feedback is appreciated!

Submitted October 30, 2016 at 09:00PM by carrotcake9
via reddit http://ift.tt/2flfZcL

X-post: Any experience 3D printing plastic clasps/clamps that deform around a tube?