different type cranks ?
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
different type cranks ?
Hi
What is a " Nodular crank " ?
The translation from US to German or french in the dictionary does not make any sense.
I know what a cast or forged steel crank is, but this ??
Thanks. Gunther
What is a " Nodular crank " ?
The translation from US to German or french in the dictionary does not make any sense.
I know what a cast or forged steel crank is, but this ??
Thanks. Gunther
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Supposed to be a little stronger that ordinary cast but not as strong as forged, Scat 9000 are nodular cranks and pretty good for the money 
Race Director
Joined: Nov 1999
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From: Foxfield CO 1970 Convertible
Nodular cast iron, also known as spheroid graphite iron, is that the graphite is present in ball-like form instead of flakes as in ordinary gray cast iron. This results in a casting of high strength and appreciable ductility. Its toughness is intermediate between that of cast iron and steel. It is more economical to make than steel because it can be cast in molds by the millions.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
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From: Las Vegas - Just stop perpetuating myths please.
Yea
Originally Posted by Z-man
Nodular cast iron, also known as spheroid graphite iron, is that the graphite is present in ball-like form instead of flakes as in ordinary gray cast iron. This results in a casting of high strength and appreciable ductility. Its toughness is intermediate between that of cast iron and steel. It is more economical to make than steel because it can be cast in molds by the millions.
I recall something like 7,000 rpm will need a forged crank but the nodgular live just fine below that rpm. And the nodgular will twist a bit to survive with less balance used. cardo0
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
the graphite is present in ball-like form instead of flakes
Ahh, now the translation starts to meke sense as it translates nodular to something like " many knots ".
Thanks a lot.
Gunther
the graphite is present in ball-like form instead of flakes
Ahh, now the translation starts to meke sense as it translates nodular to something like " many knots ".
Thanks a lot.
Gunther
