Hardest parts was getting flywheel measurements. Had to call in a lot of favours
Have you got any brass-wheeled Mamods? In the book "The Hobbies Story", they state that the first Mamod flywheels used the same tooling as the Mersey flywheels (the lineshaft one)
Photobucket has blurred my photos so I'll have to re-upload them from the same hard drive...
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The Mersey has been made much thinner but the spokes are the same:
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(I'll replace the blurry ones above, but until then you can see the resemblance)