- Jan 19, 2020
- 2,032
- 16,948
- Funster No
- 68,164
- MH
- Downsized to Bongo!
- Exp
- Since 2012
This Beam Engine is made from stuff dimensioned in 64ths! It is a right PITA...It was ordered on the Stuart’s web site via Brideport Foundry/ Plastows.
With the address on the plans being Gurnsey I feel sure it’s a genuine Stuart set of castings. This possibly means they are just old drawings. They are very British drawings in imperial and some odd sizes.
The crank is 9/32“not 1/4“ diameter. In a logical world it would make sense to use nominal sizes. Saying that most of the screws are 7BA.
The old British thread system must baffle. modern metric engineers. BSF, UNF, Cycle Threads, Whitworth, BSP and others that won’t come to mind.
When I came out of the army I had to learn using metric spanner’s. The AA took all the imperial spanners out of our tool boxes but my Sargent said they are being skipped so take what you need. I still think imperial as taught.