<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="#954F72" style="word-wrap:break-word"> <div class="WordSection1"> End cars have 70T (33” wheels) on the ends all others are 100T (36” wheels). <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <div style="mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> From: <a href="mailto:accrs@mail.accrs.org">Alameda County Central Railroad Society</a> Sent: Sunday, January 22, 2023 1:48 PM To: <a href="mailto:accrs@mail.accrs.org">accrs@mail.accrs.org</a> Subject: Re: [Accrs] Gunderson Twin Stack History </div> <o:p> </o:p> <div> Tony, <o:p></o:p> <o:p></o:p> I have a number of different truck frames that I measure 5' 10" on the wheel base. I think that is pretty standard. The big question would be what weight, ie, 50 ton, 75 ton, 100 ton, etc were they using for the cars..<o:p></o:p> <o:p></o:p> Dean<o:p></o:p> </div> <div style="border:none;border-left:solid #AAAAAA 1.0pt;padding:0in 0in 0in 11.0pt;box-sizing: border-box"> -----Original Message----- From: <accrs@mail.accrs.org> Sent: Jan 22, 2023 8:25 AM To: ACCRS - All <accrs@mail.accrs.org> Subject: Re: [Accrs] Gunderson Twin Stack History<o:p></o:p> <o:p></o:p> <div> Notice the intermediate trucks have 5’ 10” wheelbase – who makes a correct 5’ 10” truck in HO? <img border="0" width="815" height="382" style="width:8.4916in;height:3.975in" id="Picture_x0020_4" src="cid:image001.png@01D92E87.9161F900"> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> From: <a href="mailto:tony.long@outlook.com">Tony Long</a> Sent: Sunday, January 22, 2023 8:00 AM To: <a href="mailto:accrs@mail.accrs.org">ACCRS - All</a> Subject: Gunderson Twin Stack History </div> Okay, I finally found the wheelbase dimensions I was looking for regarding this cars in a very unlikely document. It’s appears to answer my questions so will continue sketching this out. <a href="https://apps.dtic.mil/sti/pdfs/ADA176892.pdf">https://apps.dtic.mil/sti/pdfs/ADA176892.pdf</a> There is a lot of information on the history and development of double stacks. It’s worth reading section IV. DOUBLE-STACKS: PIONEER EFFORTS TO DEVELOPED NETWORK. Cheers! Tony <img border="0" width="815" height="587" style="width:8.4916in;height:6.1166in" id="Picture_x0020_3" src="cid:34afa663-76fe-4eee-8e10-cb4e8f6016bf"> <o:p></o:p> </div> </div> <o:p> </o:p> </div> </body> </html>