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Oct 15, 2017 5:48 am
Oct 15, 2017 5:48 am
Subject: Re: chassis painting
My 16/80 was built in the latter part of 1932 and every original bolt I've looked at so far was machined from bar stock.
In addition, the bolt heads and nuts are thicker than the modern BSF standard. The bolt heads have a flat face where they contact the part, not the washer face you typically see on modern bolts. The nuts are also only chamfered on the outer face. The chamfers are also considerably smaller compared to modern bolts and nuts. The bolt lengths seem to be tailored for each spot - I don't find the standard 1", 1.25" etc lengths, but instead lengths like 1.08" or 1.19", for example. And finally, just to make life even more difficult, the lock washers (which are the split type) are thinner than the standard modern ones. The "light" variety, which are not that easy to find, are a pretty good match.
There are also a number of BSW fasteners, and they have the prewar big heads and nuts.
I initially bought a bunch of BSF fasteners thinking I could use them as necessary, but they stand out like a sore thumb when you mix them in with the originals. So I machine up my own fasteners, using a larger size SAE grade 5 bolt as raw material. The nuts I make from 1215 free-machining steel.
I know this is a bit OCD but it definitely sharpens up the machining skills!
Barry - I haven't painted the frame yet. I've been using industrial-grade rattle cans for the bracketry and smaller components.
Alec
My 16/80 was built in the latter part of 1932 and every original bolt I've looked at so far was machined from bar stock.
In addition, the bolt heads and nuts are thicker than the modern BSF standard. The bolt heads have a flat face where they contact the part, not the washer face you typically see on modern bolts. The nuts are also only chamfered on the outer face. The chamfers are also considerably smaller compared to modern bolts and nuts. The bolt lengths seem to be tailored for each spot - I don't find the standard 1", 1.25" etc lengths, but instead lengths like 1.08" or 1.19", for example. And finally, just to make life even more difficult, the lock washers (which are the split type) are thinner than the standard modern ones. The "light" variety, which are not that easy to find, are a pretty good match.
There are also a number of BSW fasteners, and they have the prewar big heads and nuts.
I initially bought a bunch of BSF fasteners thinking I could use them as necessary, but they stand out like a sore thumb when you mix them in with the originals. So I machine up my own fasteners, using a larger size SAE grade 5 bolt as raw material. The nuts I make from 1215 free-machining steel.
I know this is a bit OCD but it definitely sharpens up the machining skills!
Barry - I haven't painted the frame yet. I've been using industrial-grade rattle cans for the bracketry and smaller components.
Alec