10-11-2018, 12:48 AM
(This post was last modified: 10-11-2018, 04:02 AM by Bob Culver.)
The broken crank photo from Ruairidh seems to illustrate grossly negligent grinding of the crankpins! Some years ago I read a book on the development of the BMC B engine (A50, A60 MGA etc) Increasing the radius from .060 to .090 had a huge beneficial effect on fatigue life. Jowetts discovered the same, although their need was more desperate! Reconditoners have undone nearly all
At 7000 rpm forces are 4 times 3500. A 10% increase has a huge effect on fatigue. Cracks progress in laps instead of decades and the appearance is different..
At 7000 rpm forces are 4 times 3500. A 10% increase has a huge effect on fatigue. Cracks progress in laps instead of decades and the appearance is different..