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Cheers for the site Struct71 but unfortunately the pin dia needs to be a specific size along with the gap between the 'arm' points of the shackle (internal distance). I did have a look around briefly before.

Cheers for this biginch, one question regarding the moment. You say that the max bending moment will be the force applied/2*1/2 distance between the bolts. What is meant by 1/2 distance between the bolts? Cheers Again

Hello All, I'm currently designing a lifting shackle to aid the recovery of a ROV, my problem is that I'd like to do some hand calculations to find the stresses in the shackle but I'm really not sure as to where to start. I know how to calculate the stresses in the fixing holes but it's the...

Cheers Greg your obviously right, there's a 61.68% difference between mass flow rates. Will

Am I right in saying that when using dimensional analysis and using a 1/4 scale pipe for an air intake on a wind tunnel model that the mass flow rate will be exactly 1/4 of the full size when the air density, viscosity and velocity do not change? Regards Will

Ok this is what I've got access to; CATIA V5 R12. Now what I need to do is change the multi point scan into surfaces, the file is currently in IGES format and I've imported it into CATIA but I really haven't got a clue as to how I go about changing the points into a surface. I've got around...

MLeow thnks alot maybe I should go to bed now as its the early hours and sorry to Greg for battering your head but thanks again. Will

It doesn't effect how I calculate it its just that the chassis should be around 2 - 2.5 times stiffer than with them fitted. Sample Calc: (mass*gravity*deflection)/angle of twist This will give you N.m/degree, now I'm not sure if this is the right calculation to do? Thanks for your patience...

Sorry I should have said that the chassis is a ladder frame style with shear plates on the top and the bottom. Will

I don't think that is right for what I need as this would give me the same torsional stiffness for the chassis when it had the shear panels on and off? Or are you saying to incorporate the angle of twist as well? Will

Hello guys and gals I'm brand new to the forum and have question, here goes; I've done a torsion test on a car chassis with one end secured and the other end attached to a device which has a bar connected perpendicular to the chassis which rests on an arced section of steel on the floor. Now...