Re: Forged steel crankshaft vs cast
Croftons had the military engine with steel crank and strapped mains. That was critical to reduce crankshaft flex. I listened to one of those turn 12,000 rpm. But as you said, Barry. Sustaining that would mean a short life.
From: Crosley-Gang@groups.io [mailto:Crosley-Gang@groups.io] On Behalf Of Barry Smedley
Sent: Friday, May 26, 2017 1:20 PM
Subject: Re: [Crosley-Gang] Forged steel crankshaft vs cast
I knew of some TQ Midgets that were turning 10 grand but I think they had a short life.
A properly setup stock engine with a good crank can do 7500rpm. Valves start to float at about 7800. A properly setup engine for racing can do a lot more.
• “This message contains CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s) named above. Any review, disclosure, distribution, copying or use of the information by others is strictly prohibited. If you have received this message in error, please advise the sender by immediate reply and delete the original message." (English) • "Ce message contient des informations confidentielles destinées uniquement à l'usage du(des) destinataire(s) nommé(s) ci-dessus. Toute consultation, distribution, copie et utilisation du contenu de ce message est strictement prohibée. Si vous avez reçu ce message par erreur, SVP avisez l'expéditeur par réponse immédiate et effacez le message original." (French)