Thanks for the info.
I was just curious why the hinge would be designed this way. I guess this is a way of making sure the bottom of the door seals when it is closed, and does not drag or wear as it is being opened.
Hi everyone,
I have a question about the door hinges on a large walk-in freezer used to store product for the frozen section of a large Grocery store.
I noticed that when opening the freezer door, the entire door moves up about 3/4 to 1 inch or so. The hinges are designed with a helix /...
Thanks for the link unclesyd.
At the link below, which I got from the wiki page you provided, it shows a gear-balance that behaves like the Roberval balance.
http://www.lhup.edu/~dsimanek/museum/roberval.htm
...are prevented from rotating due to their pinned connection to the ends of the upper an lower horizontal beams, the two pivotal horizontal beams *block* or prevent the transmission of torque from one loading platform to the other.
The ends of the upper and lower horizontal members are...
Thanks for all the feedback guys, all clear now.
I think handleman cut right to the chase. The weight platforms stay horizontal and are moving linearly not arcing, so torque is not a factor & there is no effective moment arm for balance purposes. If the platforms had an arcing motion it would...
Thanks for your replies as well Ivymike and Compositepro, I did not see them before posting my reply to Ron. The opera browser has this annoying glitch where you have to reload the page before you can see the updates to the page. If you come back and forget to reload, you don't see the updates.
Hi Ron, thanks for your reply.
Your explanation seems similar to one of the notions I had, it seemed to be a situation where the weight forces were acting more linearly, as if the moment or torque forces of the weights were not coming into play as far as balance is concerned, as they would on...
I ran across this thing called the "lever paradox" on page 19 of the book "1800 Mechanical Movements" by Gardner D. Hiscox. I think the same lever mechanism is shown in Gardner's other books on mechanical movements, some of which can be downloaded free via google's book search function.
I...
Thanks for the bolt stress calculator link rmw.
There is just one thing on the calculator I'm not quite sure of. I have data for nut factor (k), but regarding the "bolt torque factor" (q), is that generally left at the default 0.5 setting for most calculations ?
Thanks
John
Thanks for the bolt-science link Desertfox, that was an interesting little article. A guy from the GM power-train fastener lab is one of the best sources of info on the subject I can think of.
John
...exhaust system clamps than the rear axle they were used on."
I know what you mean, some brake pads on smaller vehicles look like toys, they don't *look* like they could reliably stop the vehicle, but they do stop. The front end parts and control arms of some of the new full size pickups I...
...to tell unless you actually scribe location marks on everything.
I guess the bottom line is that any good bolted joint design will take *all* of the variables into consideration and then apply a generous safety factor. It also seems to me that a good design will take a few reuses into...
Hi everyone,
I would like to ask some questions and start a discussion related to U-bolts used to clamp leaf spring stacks on the suspensions of vehicles such as small to full size pickups, jeeps, and larger work trucks.
Generally, most after-market U-bolt manufacturers recommend to never...
I stumbled across this GM produced auto-differential video tutorial online, and I thought it was kind of interesting. It's a "Jam Handy" production, who I think produced other videos of this type.
http://www.youtube.com/watch?v=K4JhruinbWc
Aside from my general interest in seeing something...
Thanks for the additional feedback Todd,
The files are about 9 MB and it does happen to more than one file. I think it must be some setting I am missing, or possibly something to do with layers and/or layer settings.
I also have the feeling that when adding or subtracting from solids, if I had...
...make sure that when I open the drawing again, the color of the model is just as I last saved it.
Back in AutoCAD 14, all I had to do was go to *object properties*, then select the solid model and change the color. The whole process only took a few seconds and it was permanent, i.e., the...
...the design process.
Sometimes, a part is even more than one color, one surface may be blue, another surface may be red, etc.. It seems AutoCAD is *remembering* all the colors that I tried or used throughout the design process and is somehow getting confused as to which color was the last...
