Subject: [Shop-talk] Looking for design engineering expertise

From: Steve via Shop-talk <[email-masked]>
Date: Mon, 23 Dec 2019 16:30:18 -0800

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Here=E2=80=99s why I=E2=80=99m confused!

I=E2=80=99m trying to reverse engineer and then create a few copies=20
of a partially complete OVERRIDING ROLLER CLUTCH (one-way)
that we have available, in-house (see photos at bottom of post)=20

I need to re-create the missing spring cover sleeves and springs=20
that follow the rollers.  If you=E2=80=99ve got any experience with=20
OVERRIDING ROLLER CLUTCHES, you=E2=80=99ll know what I mean.

I=E2=80=99m hoping that there=E2=80=99s a simple value range that I can =
pick from and=20
maybe even find some already available spring covers and even springs=20
that can be adapted.=20

If you=E2=80=99re interested in what this fits, it=E2=80=99s for a =
specific Gray & Davis (Boston MA)=20
manufactured starter.  The original OVERRIDING ROLLER CLUTCH assembly =
was=20
a sub-assembly for G&D and supplied by Miesel Press, a Boston machine =
tool=20
manufacturer.  This starter was optionally available on Overland =
automobiles in 1914. =20

Any suggestions?=20

Below is the actual 6 roller version (maybe inserted in the 1950s??) in =
place of the=20
original 3 roller version.  We=E2=80=99re working with the 6 roller =
design, as it=E2=80=99s interchangeable=20
with an original 3 roller version.  As can be seen, we=E2=80=99re =
missing the springs and spring=20
cups that follow the rollers, keeping them ready to lock the rotor to =
the shaft rotation.

Center rotor (w/ square drive) is 15mm thick

Max diameter of rotor is 68mm

Rollers are 15mm x 8mm dia. (or 5/16=E2=80=9D dia.) ambiguous=20

Square drive is 20 x 20mm=20

Outer (containment) race machined into sprocket casting=20

Steve Hammatt
Mount Vernon WA USA
360-661-6060
[email-masked]

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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>Here=E2=80=99s=20
why I=E2=80=99m confused!</DIV>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>&nbsp;</DIV>
<DIV><IMG=20
src=3D"https://media.springernature.com/lw785/springer-static/image/prt%3=
A978-0-387-92897-5%2F15/MediaObjects/978-0-387-92897-5_15_Part_Fig3-985_H=
TML.gif"=20
width=3D154 height=3D141></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>I=E2=80=99m trying to reverse engineer and then create a few copies =
</DIV>
<DIV>of a partially complete OVERRIDING ROLLER CLUTCH (one-way)</DIV>
<DIV>that we have available, in-house (see photos at bottom of post) =
</DIV>
<DIV>&nbsp;</DIV>
<DIV>I need to re-create the missing spring cover sleeves and springs =
</DIV>
<DIV>that follow the rollers.&nbsp; If you=E2=80=99ve got any experience =
with </DIV>
<DIV>OVERRIDING ROLLER CLUTCHES, you=E2=80=99ll know what I mean.</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV><IMG alt=3D"Related image"=20
src=3D"https://thumbs.gfycat.com/GrimyHonestFlickertailsquirrel-mobile.jp=
g"=20
width=3D640 height=3D368></DIV>
<DIV>&nbsp;</DIV>
<DIV>I=E2=80=99m hoping that there=E2=80=99s a simple value range that I =
can pick from and=20
</DIV>
<DIV>maybe even find some already available spring covers and even =
springs=20
</DIV>
<DIV>that can be adapted. </DIV>
<DIV><IMG alt=3D"Image result for overriding roller clutch"=20
src=3D"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAT4AAACeCAMAAACcjZZY=
wPc9mmUehoi1wAAAABJRU5ErkJggg=3D=3D"></DIV>
<DIV>&nbsp;</DIV>
<DIV>If you=E2=80=99re interested in what this fits, it=E2=80=99s for a =
specific Gray &amp;=20
Davis (Boston MA) </DIV>
<DIV>manufactured starter.&nbsp; The original OVERRIDING ROLLER CLUTCH =
assembly=20
was </DIV>
<DIV>a sub-assembly for G&amp;D and supplied by Miesel Press, a Boston =
machine=20
tool </DIV>
<DIV>manufacturer.&nbsp; This starter was optionally available on =
Overland=20
automobiles in 1914.&nbsp; </DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">&nbsp;</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">Any=20
suggestions? </DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">&nbsp;</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">Below is=20
the actual 6 roller version (maybe inserted in the 1950s??) in place of =
the=20
</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">original 3=20
roller version.&nbsp; We=E2=80=99re working with the 6 roller design, as =
it=E2=80=99s=20
interchangeable </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">with an=20
original 3 roller version.&nbsp; As can be seen, we=E2=80=99re missing =
the springs and=20
spring </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">cups that=20
follow the rollers, keeping them ready to lock the rotor to the shaft=20
rotation.</DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">&nbsp;</DIV>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt" align=3Dleft><SPAN=20
style=3D"mso-no-proof: yes"><SPAN style=3D"mso-no-proof: yes"><IMG=20
title=3Dclip_image002=20
style=3D"BORDER-TOP: 0px; BORDER-RIGHT: 0px; BACKGROUND-IMAGE: none; =
BORDER-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; BORDER-LEFT: =
0px; DISPLAY: inline; PADDING-RIGHT: 0px"=20
border=3D0 alt=3Dclip_image002=20
src=3D"cid:6217F7708ED248A4B722C016DC331965@DESKTOPTOA1F5G" width=3D193=20
height=3D257></SPAN><IMG title=3Dclip_image004=20
style=3D"BORDER-TOP: 0px; BORDER-RIGHT: 0px; BACKGROUND-IMAGE: none; =
BORDER-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; BORDER-LEFT: =
0px; DISPLAY: inline; PADDING-RIGHT: 0px"=20
border=3D0 alt=3Dclip_image004=20
src=3D"cid:3E82D46AB3A84F9CAD4661AC28CA2755@DESKTOPTOA1F5G" width=3D194=20
height=3D258></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT=20
style=3D"FONT-SIZE: 11pt"></FONT>&nbsp;</P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT=20
style=3D"FONT-SIZE: 11pt">Center rotor (w/ square drive) is 15mm =
thick</FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT =
style=3D"FONT-SIZE: 11pt">Max=20
diameter of rotor is 68mm</FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT=20
style=3D"FONT-SIZE: 11pt">Rollers are 15mm x 8mm dia. (or 5/16=E2=80=9D =
dia.) ambiguous=20
</FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT=20
style=3D"FONT-SIZE: 11pt">Square drive is 20 x 20mm </FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT=20
style=3D"FONT-SIZE: 11pt">Outer (containment) race machined into =
sprocket casting=20
</FONT></P>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">&nbsp;</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">Steve=20
Hammatt</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">Mount=20
Vernon WA USA</DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">360-661-6060</DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000"><A>[email-masked]</A></DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000"><BR><BR>&nbsp;</DIV></DIV></DIV></DIV></DIV></DIV></BODY></HTML>=

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