Author Topic: large journal crank  (Read 318 times)

Offline nimrod650

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large journal crank
« on: 09.01. 2016 18:46 »
what is  the difference between large and small journal cranks are there any numbers to tell thanks

Online KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
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Re: large journal crank
« Reply #1 on: 09.01. 2016 19:42 »
The journal size of the big ends are significantly different (of course!). The small journal crank also has wider big end journals.

I am not sure if part or casting numbers are on the cranks but the flywheels look different as well, being bolted on differently etc.
New Zealand

1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

1949 C11 rigid, but why!!! (cos it was cheap)

1937 B21, project missing parts, mission impossible?

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife