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I am looking for a shock absorber for taking a load of 60-70 kg, at 25 kmph speed. I tried to use the one attached, but that spring is rated for 200kg load. My question is, can I have the spring replaced "IN" the chamber pointed in image shockDismantled, instead of outer spring? That way my shock could be sleek. I want this to be fitted in a small bike, that goes on road. The chamber is made of aluminium alloy, while the piston part is of steel.

Geothermal Vents Water emerges from these vents at temperatures ranging from 60 °C (140 °F) up to as high as 464 °C (867 °F). Due to the high hydrostatic pressure at these depths, water may exist in either its liquid form or as a supercritical fluid at such temperatures. The critical point of (pure) water is 375 °C (707 °F) at a pressure of 218 atmospheres. The initial stages of a vent chimney begin with the deposition of the mineral anhydrite. Sulfides of copper, iron, and zinc then precipitate in the chimney gaps, making it less porous over the course of time. Vent growths on the order of 30 cm (1 ft) per day have been recorded. An April 2007 exploration of th…

.,.,.,.,.,.,.,.,.,.,ClimateChange.,.,.,.,., Below is what I have found. You can do the math Globally, crude's reserves-to-production ratio has hovered between 40-55 years. (Then the well runs dry) https://tinyurl.com/yd7cfczq https://tinyurl.com/yd7cfczqv The above is saying, all the known oil reserves will be sucked up and burned within 40-55 years. What so many people fail re realize is the there are two (2) dynamics going on here which on the surface seem unrelated which is our biggest mistake World Oil Reserves1,650,585,140,000 barrels 47 years of oil left(at current consumption levels) World Oil Statistics - World…

How do I find the power of the water dispenser pump in the evaporative cooler? The mass flow rate of the water is clear, but I'm having trouble finding the speed of the water to be pressed and the power of the pump. How should I proceed?

Our search for life on another planet needs to look for a light source that did not come from a sun. Humans produce light unlike the sun— If you can find a light source with this wavelength, you have found what we have been looking for----

Hi friends I have a question about the mechanism of the device? you can see it in attached file. I think it use the hoekens mechanism? is it right? and another thing is this What is used to adjust or slow down the movement when the mechanism is reversed? thanks for your help Hemaprep® Use & Care.mp4

Proto MFG has been satisfying its hundreds of customers since 2014 with its consumer based custom precision parts. With our skilled craftsmanship and years of expertise, Proto MFG has the means to get you exactly what you need and when you need it. We are dedicated to creating long-term partnerships with our customers by providing reliable service and dependable products. Proto MFG was established in 2014 and now has a large facility with total 4,500 sqm in Shenzhen and Dongguan. With advanced technologies and experienced engineers, the company specializes in CNC Machining Service, Urethane Casting Service, Sheet Metal Service, Custom Fasteners Service. …

Hello to all. Does anyone know this regulation? Have you got some material in this regard? Have a nice day!

Hello, I may be on the wrong show but I'm reaching a point of no return and so desperate for any advice. The machine I have has a drive belt that keeps slipping to one side, rubbing against the pivot shoulder and in time frays and breaks. There does not appear to be any adjustment to align the belt over the pivot or indeed around the pulley wheel. The belt is driven from the pivot wheel you can see in the first picture. I'm not expecting an easy answer but there must be a cure for this in some form or other. I should appreciate any advice you may have.

I started this topic to create a discussion on the mechanical properties of the “SeaEngine" attached. NOTE: If the text is small and hard to read— Hold down the [ctrl] key while rolling your mouse roller up or down. Does this work in your computer? Back to OP Tying energy sources together multiplies the energy output. Below is a short description of how this machine works. It is based on the diagram of a machine titled “SeaEngine”, see attached (1) cubic foot of displaced seawater has a lifting force of 64 pounds (USA) when held underwater. The two-dimensional JPG drawing titled “SeaEngine” is a cross-sectional view …

I am looking to use one of the equations outlined in "A pressure-sinkage model for small-diameter wheels on compactive, deformable terrain", G. Meirion-Griffith, M. Spenko, Journal of Terramechanics, Volume 50, Issue 1, February 2013, Pages 37-44. The equation I am seeking to use is the diameter and width dependent model for wheel sinkage (z0): Currently when attempting to solve this equation the resulting answer for sinkage that I get is unfeasible. Initially I am simply trying to substitute the values presented within the paper to achieve the result given. The terrain variables I initially used are for a clay/silt mix as were given in this…

How do I calculate the final temperature of a car engine from just the power spectral density (or ASD)? I imagine somehow relating the power input as energy, but what is the best way to go about this?

Sandblasting is a way of smoothing and cleaning a hard surface by forcing solid particles on the surface of work piece at high speeds by using compressed air from the air compressor. With aggressive blasting, sand moved against a surface. With shot blasting, on the other hand, small metal balls or beads are propelled or moved against a texture. The beads are often made of stainless steel, copper, aluminium or zinc. In the case, all of these metals are harder than sand, making shot blasting even more effective than its aggressive blasting equivalent.

Hey guys, a mechanical engineering app is for free for 1 week. Don't miss it :) It's only for android. Download link : https://play.google.com/store/apps/details?id=com.asistan.AsistanPro

I'm doing research about bogie train (especially machine elements and materials). Does anyone have any articles or documents about it?

Hi, I am looking for any publications or literature that woould be useful in topic: Vibration & Noise, more specific: Noise coming from Vibrations in Industry. Any suggestion would be helpful.

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There are many methods for numerical integration. Most of these are of historical interest and only marginal practical value, because a very few stand far above the others. These are Gauss and Lobatto Quadrature. Gauss does not require the end points, while Lobatto does. Sometimes this makes a big difference. If you must integrate about a singular end point (like mc²=integral(mvdv/sqrt(1-v²/c²),v=0..c) use Gauss because v never gets to c. Of course, this particular integral has an analytical solution, but you can see how v=c results in a divide by zero. Some things reported in the literature are simply not true; for example, 5x5-point Gauss is nowhere near as accurate as …

Hi all! I'm researching (in my university) problems that engineers face in their daily work with different documents (standards, specifications, datasheets, reports, drawings etc.) What are your daily routines you want to get rid of? What is time-consuming or inconvenient while working with documents? Where do the most mistakes usually happen? I will be very grateful for your sharing!

Can a diesel engine get severely damaged because of back pressure from fire water system? The engine drives fire water pump and the check valve was found passing. Is there any relation between possible engine piston+crank shaft damage and back pressure from fire water system?

I have a work mate who wont let the whole concept go of how a damn ratcheting screw driver works, Can someone on here please explain in laymans terms how a ratcheting screw driver works It is a collared Trojan screw driver... THE ENDLESS BUT HOW? is making me want to head butt someone lol

The machine uses the combined lifting force of a number of balloons tied together creating a combined lifting force. In this example there are 30 balloons, 15 moving up and 15 on the way down. The lowest balloon is injected with 40,000 cubic feet of air compressed down to 2,666 cubic feet. As the balloon rises it expands displacing more water creating more lifting force. The combined lifting force of the 15 balloons on the right side creates a combined lifting force of 118,428 pounds. The air in the balloons on the left side is released at the top and empty balloons move down to be refilled with air at the bottom to continue the cycle. The term “ball…

Lot of amazing animations of different machanisms can be found from YouTube channel https://www.youtube.com/user/thang010146/videos

I would love to build my own Startracker as most are quite expensive and i think it would be a fun project. What troubles me most at the time is what driving mechanism i should use as it needs to be very precise. For everyone who doesn't know what a Startracker is or more specifically what i need a quick explanation. The earth rotates 360° every 24 hours (obvioulsy) and if you want to take long exposures of the nightsky you would have counteract this rotation. So basically i need something that turns once every 24 hours. But it has to be very precise while doing so or at least for the used exposure time, my goal would be 30 seconds everything above that wo…

I am trying to build an AGV robot with a load capacity of 250kg. I have selected the motors and the caster wheels and now I am working on the suspension mechanism. I want to build a rocker arm mechanism (see attached image) and I have a problem selecting the proper joint of this mechanism. I think that bearings ( ball or roller bearings) are not suitable for this because of their size and that the mechanism is not rotating, it moves only 5 degrees which is not good for the bearings lubrifications. Does anyone know what is the best joint type to use ? Thank you in advance.

Hello, I 've tried a lot of different formulations and settings when trying to output a request file from and ADAMS model, but none of them managed to keep a completely steady output step. What I mean is that even thought I request an output about every 9e-5 seconds (10240 Hz sampling frequency), at some steps, the output time in the request file is larger, about 1e-4 seconds. Is there a way to guarantee an exact output step? Thanks in advance!

Hi,I’m a student doing an engineering project trying to improve student concentration at a home environment. If you are a high school student or college student, I would really appreciate if you could complete the survey found here: https://forms.gle/ddqXpujqaZEivpWP9 Thanks!

SUMMARY: I had a pier fabricated for my telescope but the final product is not rigid. A small amount of force or a bump will cause excessive movement of the telescope - think "upside-down pendulum". This is BAD FOR ASTROPHOTOGRAPHY ☹️. I need to find a way to make the pier more rigid. I realize that I can start over with a redesign, and it may come to that, but I want to see if I can save the existing pier as I already invested in its fabrication. DETAILS: The pier consists of a 1/4" steel plate, 10" diameter, bolted to a concrete pad. A 3" by 34" square steel tube is welded to the base plate and the mount head is welded to the tube. The mount head con…

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Attn Conference extended till 14th Oct 21 Guidelines & Rules for open ended conference Write one statement or few lines related to (any) Manufacturing & Production technology which may include process introduction application Cost benefit analysis pros and cons Diagrammatic representation latest trends And.....no limits Collective (joint) effort from all participants should be such that, none of the topic remain untouched. Your creative and innovative approach will lead to an interesting presentation in just few sentences. Do not repeat which has been already posted before your post …

Is it possible to generate 14,450kwh from 600 solar panels rated at 375 watts? Any help would be greatly appreciated

Heat treatment is a process whereby a metal or an alloy is heated to a desired temperature and kept there for some time until the desired phase and structure is obtained, after which it is cooled down at a determined rate.

Hi everyone, Need expert opinions/help in frame designing. I am a mech graduate with some experience in 2 wheelar automobile R&D. I am going to design an ATV frame from scratch that will be used for Baja contest. If you have any files/info related to baja or in any manner will be useful for frame design, kindly send me at er.surajb@yahoo.in or reply to this post. Thank you, Suraj

Good Evening all, I will be starting my third year at university next week and have already confirmed a dissertation idea I am slightly lost in the best procedure. So the project will be designing an Oil Pump for a Motorsport Transmission, although many other Motorsport Transmissions use oil pumps there is no technical information apart from pictures and exploded diagrams. My plan was to design the gearbox in solidworks and try multiple pump designs in GNU Octave however, I am un-sure on how to analyse oil pumps and the conditions they need to meet. Any help would be hugely appreciated. Louis

Required items 1. Vineer 2. Resin 3. Face 4. Film Process - vineer glued with resin and it is set according to the size required and the number of layers depending upon the thickness. After it the load will be pressed in hot press . When the time limit completed the hot press open and the load will be drag out . After it the ply is cutted in the final size.