Landracing Forum

Introductions => Formulas => Topic started by: panic on October 02, 2008, 01:44:45 PM

Title: Chassis and pushrod stiffness by OD, length, method of construction
Post by: panic on October 02, 2008, 01:44:45 PM: .
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: comp on October 02, 2008, 07:13:25 PM: lurking
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever on October 16, 2008, 08:02:12 PM: Bending resistance is in what units? Lbs, ounces, grams?
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: jl222 on October 16, 2008, 11:17:53 PM: If you got something to say say it.

JL222
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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.
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: 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.
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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. :-)
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: panic 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).
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: panic on October 17, 2008, 01:59:00 PM: .
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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-)
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: panic 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.
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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. :-)
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever 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.
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: 64avanti on April 18, 2009, 03:10:26 PM: So where is the spreadsheet for this?
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: saltfever on April 20, 2009, 02:03:37 AM: It was written by Mr.Panic. See the first post. However, he has subsequently removed almost all of his valuable content that he shared with us. He got tired of the constant remarks from the few that "just don't get it"! :cry:
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: Stainless1 on April 20, 2009, 09:37:54 AM: Send him a PM, maybe he will share it with you....
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: SPARKY on April 20, 2009, 01:14:54 PM: There might be a legitimate debate as to just who got it!!!
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: jpizza5711 on August 02, 2009, 07:10:00 PM: i am new to this form of racing and would like some help and info i am a many years drag racer who can no longer find bracket racing any fun.I like what i see in this land racing and want to do it so that being said what i have is a 1992 fiebird with a 462 engine the car weights 2950 with my ass in it it now has a 5spd and a nine in. ford rear ,it makes 645 in drag race form with a 950 quick fuel carb. now what i would like to know what will it take to go over 200mph not break records but to go 200.
thank you all for any help
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: interested bystander on August 02, 2009, 10:34:52 PM: Betcha with all the required safety equipment and the 'bird dropped low (and lower in front than the rear) and the right gear,tires, etc two would be well within reach with your power.

Any advice beyond this, Dynoroom?
Title: Re: Chassis and pushrod stiffness by OD, length, method of construction
Post by: landsendlynda on March 27, 2010, 01:56:08 AM: Quote from: ranjith on March 27, 2010, 01:24:56 AM
As far as experienced Formula SAE teams go, QUT’s version are only puppies - having been founded in 2003 after much heated discussion and enthusiastic planning, the team’s first car was constructed in time for the 2004 Formula SAE-Australasia competition. Since then, the team has built just 4 more machines, each a logical and progressive evolution of the last.

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Lynda