spacemn_spiff

iTrader: (3)

Why cant the brake pedal be designed to collapse like a steering column? I think it has been done before.

That claim based on the material Steel not being able to yield under certain loading conditions without damaging human leg is incorrect, technically it certainly is possible.

Looks like I touched a nerve there. If someone is making engineering claims without any engineering background, terminology is very important because without that everything is gibberish and out of context.

I am not trying to show off my degrees here, I am just trying to correct what I felt was incorrect, and going by the histories of some posters making claims that have no technical merit, I feel the need to correct it.

undercat

do you even pay attention to the words you read or do you just like to listen to yourself? and do you even understand how both of those collapse?

we were talking about the pedal and ARM not collapsing. if you noticed i said that it is the braking system that yields not the arm.

"The collapsible pedal system works by decoupling the solid linkage between the brake booster and the pedal box, via an ingenious system of actuators that disconnect the brake booster push rod when a deformation threshold is breached by the firewall.

The solid link between the firewall and the brake pedal - and thus the driver's leg - is then removed, helping to lessen the potential for lower leg injuries common in this type of crash." http://autoweb.drive.com.au/cms/A_55...wsarticle.html

that's how a collapsible pedal works. the ARM does not yield

Do you have degrees in industrial/imaginary engineering? Because I wouldn't trust you to design a toaster talking like that. What magical loading conditions are going to snap the brake pedal in half before you break your legs? Why don't you draw up some free body diagrams on this then come back and teach us all.

I understood what Kolia was trying to convey without all the terminology. The difference is that he has common sense while you use big words without an understanding of simple concepts to try to make people believe you know half of what you type. And before you try to spout of whatever degrees you have, I have BS and MS in mechanical engineering with an emphisis on Engineering Mechanics and did my thesis on Material Testing. So please stop trying to bs me with your obviously not-so-thought-out comments. Thanks and come again.

spacemn_spiff

iTrader: (3)

I will not resort to showing off my degrees and I am not here to prove my background's worth on this forum, my employer and my industry rewards me for what I do and I consider that the proof of my education's worth.

I was commenting on your comment about how difficult it would be to yield steel, in case you didnt notice. Again I think it can be done.

And I think that is one way to do it, there could be more ways of doing it.


This comment says alot. It takes more than just the FBD, it usually assumed in a FBD that the bodies are rigid, which they are not. I would take into account the load path and load sharing and how to manipulate that using mechanical advantage to achieve in this case, preventing the brake pedal from human injury.

Kolia

iTrader: (2)

Undercat, don’t bother too much about spacemn_spiff’s comments. He’s been masturbating to his degree for as long as I’ve been member of this forum. He only tries to discredit anybody posting anything remotely technical, never actually bringing anything of value to the table, and never committing himself.

Luckily, others are more inclined towards constructive discussions where everybody learns something.

spacemn_spiff

iTrader: (3)

Works both ways doesnt it.

3five0_GT

Check this site out.

http://gs.tolan-hoechst.com/tirecalc.htm

Kolia

iTrader: (2)

Hey that's a nice calculator!

Thanks

Kolia

iTrader: (2)

Here's the topic I just started about that.

https://my350z.com/forum/autocross-road/190500-running-staggered-r-tires-on-stock-suspension.html