Re: Metal hardness testing lab recommendation in San Jose
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Lightly swipe it with a sharp, fine single cut file. If the file bites and removes metal, it's not very hard. If the file just skids across without cutting, it's hard.
From: Scott Davis <evlist@...>
Sent: Tue, Apr 5, 2022 9:19 am
Subject: Re: [ArcaneAutos] Metal hardness testing lab recommendation in San Jose
Suspend with a string and tap with a steel rod. If it rings, it's hardened. A dull sound means it's not.
-------- Original message --------
From: "sujit roy via groups.io" <sujitroy@...>
Date: 4/5/22 08:44 (GMT-08:00)
Subject: [ArcaneAutos] Metal hardness testing lab recommendation in San Jose
There have been a lot of horror stories where the gears are not hardened and they strip. This is for a Triumph Stag. The Triumph TR7 uses a similar water pump.