Subject: [Fot] Key question

From: Philip Gott via Fot <[email-masked]>
Date: Fri, 6 Feb 2026 12:35:37 -0500

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Hi all;
I=E2=80=99m thinking of ordering a billet crankshaft.   Am wondering if anyo=
ne has had one made with a single long keyway in the nose instead of two woo=
druff keys. Are there any durability/stress riser/fatigue  or other downside=
 issues with a long single keyway? It would make assembly of the front pulle=
y onto the crank so much easier if/when it has to be done in the car (which w=
e=E2=80=99ve had to do several times).=20
Phil

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Sent from my iPhone
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_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot

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From: Anthony Parker via Fot <[email-masked]>
Date: Fri, 6 Feb 2026 18:02:13 +0000

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A car with a tractor engine???
Strange.

Not the same crank, but my GT6 cranks come with full length keyways and the=
 manufacturer didn't have any issues with this feature.

________________________________
From: Fot <[email-masked]> on behalf of Philip Gott via Fot <fo=
[email-masked]>
Sent: Friday, February 6, 2026 12:35 PM
To: Friends Of Triumph <[email-masked]>
Subject: [Fot] Key question

Hi all;
I=92m thinking of ordering a billet crankshaft.   Am wondering if anyone ha=
s had one made with a single long keyway in the nose instead of two woodruf=
f keys. Are there any durability/stress riser/fatigue  or other downside is=
sues with a long single keyway? It would make assembly of the front pulley =
onto the crank so much easier if/when it has to be done in the car (which w=
e=92ve had to do several times).
Phil

Sent from my iPhone

ail.com

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
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<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
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A car with a tractor engine???</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
Strange.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
Not the same crank, but my GT6 cranks come with full length keyways and the=
 manufacturer didn't have any issues with this feature.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div id=3D"appendonsend"></div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Fot &lt;fot-bounces@a=
utox.team.net&gt; on behalf of Philip Gott via Fot &lt;[email-masked]&g=
t;<br>
<b>Sent:</b> Friday, February 6, 2026 12:35 PM<br>
<b>To:</b> Friends Of Triumph &lt;[email-masked]&gt;<br>
<b>Subject:</b> [Fot] Key question</font>
<div>&nbsp;</div>
</div>
<div>
<div class=3D"x_BodyFragment"><font size=3D"2"><span style=3D"font-size:11p=
t">
<div class=3D"x_PlainText">Hi all;<br>
I=92m thinking of ordering a billet crankshaft.&nbsp;&nbsp; Am wondering if=
 anyone has had one made with a single long keyway in the nose instead of t=
wo woodruff keys. Are there any durability/stress riser/fatigue&nbsp; or ot=
her downside issues with a long single keyway? It
 would make assembly of the front pulley onto the crank so much easier if/w=
hen it has to be done in the car (which we=92ve had to do several times).
<br>
Phil<br>
<br>
</div>
</span></font></div>
<div><img data-outlook-trace=3D"F:1|T:1" src=3D"cid:48af74da-de92-47f3-ab2b=
[email-masked]">
</div>
<div class=3D"x_BodyFragment"><font size=3D"2"><span style=3D"font-size:11p=
t">
<div class=3D"x_PlainText"><br>
<br>
Sent from my iPhone</div>
</span></font></div>
<div class=3D"x_BodyFragment"><font size=3D"2"><span style=3D"font-size:11p=
t">
<div class=3D"x_PlainText">_______________________________________________<=
br>
[email-masked]<br>
<br>
<a href=3D"http://www.fot-racing.com">http://www.fot-racing.com</a><br>
<br>
ate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive">http://autox.team.net/ar=
chive</a>
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/fot</a><br>
[email-masked]">
http://autox.team.net/mailman/options/fot/[email-masked]</a><br>
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From: Tony Garmey via Fot <[email-masked]>
Date: Fri, 6 Feb 2026 18:06:53 +0000

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From: fubog1 via Fot <[email-masked]>
Date: Fri, 6 Feb 2026 20:58:32 +0000 (UTC)

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 I had exactly that done on the last crank that I had made.Glen finger
    On Friday, February 6, 2026 at 12:51:54 PM EST, Philip Gott via Fot <fo=
[email-masked]> wrote:  =20

 Hi all;
I=E2=80=99m thinking of ordering a billet crankshaft.=C2=A0 Am wondering if=
 anyone has had one made with a single long keyway in the nose instead of t=
wo woodruff keys. Are there any durability/stress riser/fatigue=C2=A0 or ot=
her downside issues with a long single keyway? It would make assembly of th=
e front pulley onto the crank so much easier if/when it has to be done in t=
he car (which we=E2=80=99ve had to do several times).=20
Phil

Sent from my iPhone_______________________________________________
[email-masked]

m

 =20
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<html><head></head><body><div class=3D"ydp9435fae2yahoo-style-wrap" style=
=3D"font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div></div>
        <div dir=3D"ltr" data-setdir=3D"false">I had exactly that done on t=
he last crank that I had made.</div><div dir=3D"ltr" data-setdir=3D"false">=
Glen finger</div><div><br></div>
       =20
        </div><div id=3D"ydp87080c4yahoo_quoted_0413515320" class=3D"ydp870=
80c4yahoo_quoted"><div class=3D"ydp87080c4yahoo-style-wrap" style=3D"font-f=
amily:Arial, Helvetica, sans-serif;font-size:16px;">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div class=3D"ydp87080c4quoted-text-header">
                        On Friday, February 6, 2026 at 12:51:54 PM EST, Phi=
lip Gott via Fot &lt;[email-masked]&gt; wrote:
                    </div>
                </div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"ydp87080c4inline_repl=
y_quote_container" data-split-quote-node=3D"true">
                <div><br></div><div><br></div>
                <div><div dir=3D"ltr">Hi all;<br></div><div dir=3D"ltr">I=
=E2=80=99m thinking of ordering a billet crankshaft.&nbsp;  Am wondering if=
 anyone has had one made with a single long keyway in the nose instead of t=
wo woodruff keys. Are there any durability/stress riser/fatigue&nbsp; or ot=
her downside issues with a long single keyway? It would make assembly of th=
e front pulley onto the crank so much easier if/when it has to be done in t=
he car (which we=E2=80=99ve had to do several times). <br></div><div dir=3D=
"ltr">Phil<br></div><div dir=3D"ltr"><br></div><br><br>Sent from my iPhone_=
______________________________________________<br><a href=3D"mailto:fot@aut=
ox.team.net" rel=3D"nofollow" target=3D"_blank">[email-masked]</a><br><=
br><a href=3D"http://www.fot-racing.com" rel=3D"nofollow" target=3D"_blank"=
>http://www.fot-racing.com</a><br><br>Donate: <a href=3D"http://www.team.ne=
t/donate.html" rel=3D"nofollow" target=3D"_blank">http://www.team.net/donat=
e.html</a><br>Archive: <a href=3D"http://autox.team.net/archive" rel=3D"nof=
ollow" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http:=
//www.team.net/pipermail/fot" rel=3D"nofollow" target=3D"_blank">http://www=
.team.net/pipermail/fot</a><br>Unsubscribe/Manage: <a href=3D"http://autox.=
team.net/mailman/options/fot/[email-masked]" rel=3D"nofollow" target=3D"_bl=
ank">http://autox.team.net/mailman/options/fot/[email-masked]</a><br><br><b=
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From: Joe Boruch via Fot <[email-masked]>
Date: Sat, 7 Feb 2026 00:28:32 +0000 (UTC)

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 Phil, Miatas use a single long woodruff key that is tapered at one end. =
=C2=A0Just need to make sure that when assembling that the taper is on the =
inside and facing the crank to match the taper in the keyway. =C2=A0Some en=
gine builders have gotten this wrong with not so good results. =C2=A0Attach=
ed is a pic of the Miata omne. =C2=A0JoeB

    On Friday, February 6, 2026 at 12:55:20 PM EST, Philip Gott via Fot <fo=

o.com

 =20
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<html><head></head><body><div class=3D"ydpf6675dcayahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
        <div dir=3D"ltr" data-setdir=3D"false">Phil, Miatas use a single lo=
ng woodruff key that is tapered at one end. &nbsp;Just need to make sure th=
at when assembling that the taper is on the inside and facing the crank to =
match the taper in the keyway. &nbsp;Some engine builders have gotten this =
wrong with not so good results. &nbsp;Attached is a pic of the Miata omne. =
&nbsp;JoeB</div><div dir=3D"ltr" data-setdir=3D"false"><span></span><img ti=
tle=3D"Inline image" alt=3D"Inline image" src=3D"cid:af5b6ac4-89cf-d423-5c8=
[email-masked]" class=3D"yahoo-inline-image" draggable=3D"false" =
style=3D"max-width: 640px; width: 100%;" data-id=3D"&lt;af5b6ac4-89cf-d423-=
[email-masked]&gt;"><br></div><div><br></div>
       =20
        </div><div id=3D"ydpf481c1bbyahoo_quoted_0467000590" class=3D"ydpf4=
81c1bbyahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                        On Friday, February 6, 2026 at 12:55:20 PM EST, Phi=
lip Gott via Fot &lt;[email-masked]&gt; wrote:
                    </div>
                    <div><br></div>
                    <div><br></div>
               =20
               =20
                <div><div dir=3D"ltr">Hi all;<br></div><div dir=3D"ltr">I=
=E2=80=99m thinking of ordering a billet crankshaft.&nbsp;  Am wondering if=
 anyone has had one made with a single long keyway in the nose instead of t=
wo woodruff keys. Are there any durability/stress riser/fatigue&nbsp; or ot=
her downside issues with a long single keyway? It would make assembly of th=
e front pulley onto the crank so much easier if/when it has to be done in t=
he car (which we=E2=80=99ve had to do several times). <br></div><div dir=3D=
"ltr">Phil<br></div><div dir=3D"ltr"><br></div><br><br>Sent from my iPhone_=
______________________________________________<br><a href=3D"mailto:fot@aut=
ox.team.net" rel=3D"nofollow" target=3D"_blank">[email-masked]</a><br><=
br><a href=3D"http://www.fot-racing.com" rel=3D"nofollow" target=3D"_blank"=
t/donate.html" rel=3D"nofollow" target=3D"_blank">http://www.team.net/donat=
e.html</a><br>Archive: <a href=3D"http://autox.team.net/archive" rel=3D"nof=
ollow" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http:=
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r><br><br></div>
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