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Hi ScottAC In the first instance you need to multiply the sealing area by the pressure to obtain the force trying to throw the block off and in your case the force will be acting on both ports. The force obtained from the above will have to be resisted by the bolts so this will give you some...

Hi Pedee68 I would check the shear stress on the internal thread created by the bolt torque and compare it with the allowable shear stress for the casting. I think you will find that the failure is most likely to be the shear stress on the internal thread is too high for the material

desertfox Mechanical Dec 28, 20025,549 Hi bugbus My comment about friction relates to the slippage of the girders in that how one would oversize the bolt holes without considering the friction generated with the bolts hand tightened. Also when the girders slip they will do so until the are...

Hi bugbus My comment about friction relates to the slippage of the girders in that how one would oversize the bolt holes without considering the friction generated with the bolts hand tightened. Also when the girders slip they will do so until the are stopped physically by the edge of the bolt...

Hello bugbus Like othersI don’t fully understand the reason for that the assembly sequence but I am curious about how you would ensure how all the bolts are not in contact with any of the mating steelwork (around the bolt holes) even if the bolts aren’t fully pretensioned. My other question...

Over time the modulus of elasticity of a spring will degrade due to environmental,mechanical, temperature and alternating loads, have a look at this article...

Hi noobokgbp Thanks for the illustration, okay the problems you need to sort out are:- If using an interference fit then you need to check the linear coefficient of expansion for both the threaded insert and the material the insert is mating with, because if there is any temperature rise...

Hi noobokgbp Right so your first task is to decide how to secure the insert, if by interference fit the interference should be such to prevent the insert coming loose under normal load conditions. Can you provide some drawings or sketches of the problem? Currently none of here can see the...

Hi noobokgbp So how do you intend to fix these inserts into the existing hole? Thread, force fit or ???. Depending on how you retain the insert will influence the calculations required.

Hi Firstly can I ask if you can provide a sketch or drawing of your situation and secondly you don’t say how the original tapped holes were damaged, was this due to external forces from the transmission? What grade of bolt are you using and what are the mechanical properties of this iron and how...

Hi rb1957 I did it graphically, I assumed a torque on link(A) and knowing that the force in link(C) has to be parallel to the link I calculated the force on link(C) at the intersection of the links (A)& (C). Now the force at both ends of link (C) must be opposite and equal and so from that...

Hi rb1957 Thanks for your positive comment. I had a go at solving the posters problem by finding the parallel force in the two bar link and then just using that force to obtain the torque about the longest link. My estimate for percentage torque output was around 1.28 so very similar to the...

Hi Here is a link to a similar problem to yours, the only difference is that they apply an external force to hold the mechanism in place and assuming you know the torque to the driver lever you can apply the same methodology. https://www.youtube.com/watch?v=mE80W4n-SiM “Do not worry about your...

Hi Everyone Thanks for all your help, I will rest easy😀👍. Tomfh, I have no idea when it appeared, I only noticed it today when I was leaving the house, it looked at first like someone had drawn a black line with a biro pen. “Do not worry about your problems with mathematics, I assure you mine...

Hi franhd Any chance you can provide a sketch of the configuration? “Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

Hi PhamENG Yes I will make sure I have my eye on the mortar 👍 “Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

Hi all I found it odd that the mortar around the brick appears in tact and I also wondered whether it’s been there all the time and I only just noticed. Certainly could be due humidity changes. “Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

Hi dik Thanks for your response 👍 “Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

Hi KootK Thank you for your response it’s appreciated 😀👍 “Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

Afternoon All I don’t very often ask for help however I would welcome any advice on the brickwork on my home. I have never noticed this small crack in the brickwork until today. The house is around 40years old and I have had no problems over the past years. The crack (see photo) appears to be...