[Fot] TR4 crankshaft steel type

[Steve Yott]

Great question and I bet we get a bunch of funny replies!!!  As far as I
know it is a steel forging but the type would be unknown to me.  I have had
a number of cranks nitride over the years and not one facility has asked
this question...

Steve Yott

PS. I believe the web at the rear main is made of tin.......!!

-----Original Message-----
From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of John Styduhar
Sent: Wednesday, July 30, 2014 8:28 AM
To: Triumph 'Friends of Triumph
Subject: [Fot] TR4 crankshaft steel type

What type of steel is the TR4 crankshaft made from? I need to provide this
information to the nitriding facility.  Thanks
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