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Author Topic: Chassis and pushrod stiffness by OD, length, method of construction  (Read 24692 times)

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Offline panic

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Chassis and pushrod stiffness by OD, length, method of construction
« on: October 02, 2008, 01:44:45 PM »
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« Last Edit: October 21, 2008, 06:32:51 PM by panic »
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Offline comp

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #1 on: October 02, 2008, 07:13:25 PM »
  lurking
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #2 on: October 16, 2008, 08:02:12 PM »
Bending resistance is in what units? Lbs, ounces, grams?
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Offline jl222

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #3 on: October 16, 2008, 11:17:53 PM »
  If you got something to say say it.

     JL222
« Last Edit: August 03, 2009, 12:17:27 AM by jl222 »
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #4 on: October 17, 2008, 12:11:13 AM »
Quote from: jl222 on October 16, 2008, 11:17:53 PM
  If you got something to say swaning say it.

     JL222
Hi jl. Not too sure what you are getting at or the meaning of "swaning".  The subject if this thread is a spread sheet created by Mr. Panic. One of the notes in cell O4 says the contents are multiplied by 100 million. I would like to know what the units are.
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Offline panic

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #5 on: October 17, 2008, 12:13:50 AM »
"Dimensionless units" to quote Blair - just for comparison, and a multiple is used to make the numbers manageable.
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #6 on: October 17, 2008, 12:31:35 AM »
Quote from: panic on October 17, 2008, 12:13:50 AM
"Dimensionless units" to quote Blair - just for comparison, and a multiple is used to make the numbers manageable.
Got it. "figure of Merritt" so to speak.  THANX.  :-)
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Offline panic

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #7 on: October 17, 2008, 09:59:06 AM »
I'm going to include selections for steel, aluminum and titanium once I'm a bit better at Excel (trying to learn software at my age is slow going).
« Last Edit: October 17, 2008, 10:13:06 AM by panic »
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Offline panic

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #8 on: October 17, 2008, 01:59:00 PM »
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« Last Edit: October 27, 2008, 12:24:17 AM by panic »
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #9 on: October 17, 2008, 03:27:39 PM »
That is a pretty sophisticated Excel sheet from someone that is supposedly "learning" the software. :wink:  Many thanks for the updated version and the work being done.

Any chance you could do one to calculate bolt strength for tensile and shear? 8-)
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Offline panic

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #10 on: October 17, 2008, 05:07:47 PM »
I'm pretty sure that's already out there.
I don't enjoy this stuff, I only made it up because I couldn't find anything except the math (I started writing car calculations by hand when Eisenhower was President). As all you MS Office people know, the "help" files are written by and for the people who wrote the program, and are almost useless to anyone else.
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #11 on: October 21, 2008, 07:45:53 PM »
Quote from: panic on October 17, 2008, 05:07:47 PM
I'm pretty sure that's already out there.(Snip . . . )
All the CAD programs have a bolt calculator feature embedded within. However, not having a robust CAD system, I was looking for something standalone.  Agree . . . I'm sure they are out there. I'll start googleing and report back here. Thanks for all your efforts to-date.  :-)
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #12 on: October 24, 2008, 04:22:21 AM »
Here are some on-line calculator programs related to bolts and fasteners.

(1) 30 Free Trial. Various prices for one year subscription or unlimited licenses available. Look for "bolted connections". Click on "products" (left side) then down load it from here then bolted connections in middle of page.
http://www.mitcalc.com

(2) Free. Look under online calculators on the left side of the page.
http://www.futek.com/boltcalc.aspx

(3) 23,585 on line calculators covering every subject you can think of. Look in the Engineering Center under mechanical Engineering. There are a few bolt fastener programs. Careful! you could spend your life here  :wink:
www.martindalecenter.com.

(4) Nice chart. Suggested starting torque values with proof and clamp loads.
http://www.portlandbolt.com/Documents/Portland-Bolt-Bolt-Torque-Chart.pdf
« Last Edit: October 24, 2008, 04:29:08 AM by saltfever »
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saltfever

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #13 on: October 24, 2008, 10:23:54 PM »
I just got an email reply from the author of the MIT software (no. 1 above). The $29 cost of the Bolted Connections program is good for unlimited time. You don't get a CD. It is a download.
« Last Edit: October 25, 2008, 04:35:38 AM by saltfever »
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Offline 64avanti

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Re: Chassis and pushrod stiffness by OD, length, method of construction
« Reply #14 on: April 18, 2009, 03:10:26 PM »
So where is the spreadsheet for this?
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