There is all ways soaking it with citric acid in the manner you have chosen. If there is the slightest bit of unseen rust under the paint work full immersion in a bath will find it and therefore lift the paint, plus it is quicker than molasses and doesn't have the same scent. Despite having used ...

Any engine re builder can check for bent rods and crank and crack test same. I always get a crack test on an engine rebuild. The only time I've had cases tested they torqued them together and measured for bearing housing out of roundness with a inside micrometer. It was out of round so it was line ...

Not that I can find. A 10g spoke should be 40 tpi. If the thread gauge says 32 tpi a unc 32tpi no.6 may do. As you stated there is no metric equivalent that would work. I would probably try, if the threads were too rough a 32tpi thread file or if they are just crudded a touch of fine valve grinding ...

3.2 mm equates to 10g spokes which were fairly standard on the front wheels of british bikes. Anything pre-69 will use them.

In the vehicles I have worked on it has always been course thread into the alloy. It appears to be due to the depth of thread contact ie difference between major and minor dia. of the thread pattern and the tapping limitations of the older alloys. Finer threads just seem to weld themselves solid. If ...