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Bomber crank refurb

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Spitfire:
Those videos kept me amused (and amazed) for quite some time, what fantastic work and he does sound so casual about it all.

Cheers

Dennis

K2-K6:
Think he has some help with setting up the crankshaft alignment by employing miniature engineers.

https://youtu.be/uTSLUaTjvqw

 ;D

K2-K6:
Apologies for thread drift Ash

https://youtu.be/81UjjSH2iFw

What an amazing process.

AshimotoK0:
I think the 1st production CB750 cranks in 1969 were ground using a Swiss made machine.

AshimotoK0:
Yes amazing machine Nigel. I designed the closed loop water flushing valve system for this company.. which all started in the UK Coalville) . Amazing CNC machines which can spark erode (EDM)  tiny holes to amazing depths and tolerances.

https://www.winbrogroup.com/wam/edmdrilling/

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