THE SS 350 PROJECT
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Replacing the Instrument Bracket

4/30/2020

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We got this new old stock instrument bracket in the mail today, wrapped in its super cool Harley Davidson 70s packaging. The NOS bracket has a little ding on the front (maybe it was a factory "irregular") but otherwise looks great with it's original paint finish. 

Our current bracket is rusted and the oval tabs look like they might break off with the force of a pinky.
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Trying to remove the instruments proved to be a learning experience in patience. Unlike the near-to-instant gratification of polishing the rust off the chrome, getting into actual bike components is a slow, careful navigation of unfamiliar engineering. Add to this, trying to gingerly remove the nearly 50 year old parts so we don't damage them in the process. This includes old rubber gaskets, trying to not break aluminum bolts, and trying to not crack any difficult to find plastic parts. 

Removal required:
  1. Removed the tach, speedo, and brake cables from the front wheel
  2. Removing clamp to release the handlebars
  3. Unscrewing the entire instrument cluster from the forks (Here we ran into a seized fork bolt nut threatening to completely undo itself with the spring exploding out of it.       
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Here, we ran into a roadblock. The four screws attaching the molded plastic shell forming the underside of the instrument cluster seemed permanently attached. Were they press fitted on to the posts? Did we need to unscrew the strange plastic sleeves which we'd never seen before? [NB. The service manual is barely helpful and we were trying to be delicate with all the parts instead of ripping them off with brute force.]
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The bracket that we thought we'd install in half an hour…LOL.
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Side Panel Stripping

4/28/2020

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The Aermacchi as it was purchased, with its rusted, brown side panels.
One of the worst eyesores on the bike was the side panels which had been completely rusted out. From what we can surmise by examining the protected screw holes, the original paint seems to have been a textured black. Thanks to its easy removal and its mostly flat surface, the side panels were also one of the first parts we endeavored to re-finish.
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The vinegar pickled the paint on our panels.
After removing most of the rust with a heavy duty stripping pad, the panels were soaked overnight in a vinegar bath, less noxious than a chemical remover. While we were expecting the vinegar to obliterate the rust, it also lifted the paint off which was actually to our benefit as we decided to have the panels powder coated in a textured black. 
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Before vinegar stripping
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After vinegar stripping
Soaking the panels in the acidic solution meant we had to work quickly to remove the last bits of stubborn paint because the panels began to quickly oxidize. They were then oiled for protection for further oxidation, packed up, and shipped out to Texas where they're in the process of being finished. 
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Perusing the Marketplace

4/22/2020

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We were not in the market to buy a bike. But thanks to the shelter-in-place mandate here in NYC, one Saturday afternoon, we found ourselves waxing poetic about the bikes we used to own, which was followed by looking online at old motorcycles on the auction block.
In 2008, I owned a 1973 Aermacchi Harley-Davidson SS350 Sprint, purchased with an attached sidecar for the purpose of getting around town with my dog. Strangely enough, we spotted one on Marketplace, and made plans to casually see it in Middle Village, Long Island the following Wednesday afternoon.
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Bandit sitting in the sidecar of my first Aermacchi, snagged from Craigslist in Connecticut, circa 2007.
Cons: The 'Macchi was kept in a shed, semi-exposed to the elements, and covered in rust. But it ran…using the kickstarter (starter not operative). The ignition was drilled out.
 
Pros: Single owner, ridden less that 1,000 miles. And, it came with all the original documentation in pristine condition.

We were on the fence… until the seller brought the price down by $500. At that point, it was an offer that we couldn't refuse!
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The service coupon book, showing the last service in 1973. It never reached the 1K for service!
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That the bike came with all its original documentation in pristine condition was a selling point.
The bike is a time capsule from the 70s. From the engineering and form factor, down to the graphics of printed paraphernalia. A unique find, for sure.

At any rate, the seller dropped it off to us in Brooklyn for another hundred bucks and we had ourselves a project!
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