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The Obsidian Files - Undercarriage - The Scotland Directive

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peterz(at)zutrasoft.com
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Posted: Fri Jan 24, 2025 5:59 am Post subject: The Obsidian Files - Undercarriage - The Scotland Directive

I guess there is always a “better mousetrap”, but always at the cost of complexity and weight.



FWIW, I find the simply, factored-down, mono mechanism design, with the bungees work absolutely fine and with minimal effort.



In fact, just like in a performance car, I very much appreciate the ability to “feel” the forces involved, to be able to assess the mechanical and aero performance of the system. Adding mechanical advantage by definition reduces the feedback feel by the same advantage gained.



FWIW

Cheers,

PeteZ



 	  Quote: 	
		   On Jan 24, 2025, at 8:38 AM, Area-51 <goldsteinindustrial(at)gmail.com> wrote:

 

 

 

 A while back during conversation with another Europan it was explained to me that a Scottish europa had a a unique "effortless" undercarriage mechanism that used an alternate 180 degree throw arm... this intrigued me... so i sat there for about a week and nutted it out and achieved a comparative result.

 

 The mechanism uses a third lever running off the existing OEM throw lever. Measurement of the mechanical forces required to action the undercarriage returned very casual numbers regarding physical operator effort required.

 

 Attached are three images showing geometry for retracted, midway, and extended. It is a very elegant solution.

 

 The extra unchanging yellow canted line marks the OEM factory extended position.

 

 During retraction the undercarriage swing arm raises approximately an inch above and then down into its parked position, and vise versa upon extension; it raises slightly first, then drops down to extension.

 

 That's all for now on this short and interesting chapter of the Obsidian Files.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=515244#515244

 

 

 

 

 Attachments: 

 

 http://forums.matronics.com//files/38b58ccd_9321_43c7_b25f_8000daa9342e_206.jpeg

 http://forums.matronics.com//files/690857c0_197a_45b2_9bbf_f093ccdccd34_156.jpeg

 http://forums.matronics.com//files/8fe5e4d9_1996_4460_86d4_31bca4463468_149.jpeg

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Area-51

Joined: 03 May 2021
Posts: 429

Posted: Fri Jan 24, 2025 6:37 am Post subject: Re: The Obsidian Files - Undercarriage - The Scotland Direc

I totally agree.



That is why a 1970's Silver Shadow will never be as exciting to drive as a 1902 American Underslung 😀

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