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Molto Verboso
bare metal cafe racer
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Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
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Location: Aotearoa (New Zealand)
UTC quote
Failed my warrant of fitness because the Siem headlamp was pointing too high. The guy asked me, “are you planning to shoot possums?” I checked it and it was only 3deg up (not really treetops…) I knew it was out - the guy who did my first certification turned a blind eye. When back to the same place but got a different guy. Needed to make it functional anyway…

So did some maths (soh car toa) and figured I needed to shift the bottom of the headlamp back 10-12mm to drop the angle ~6deg. Meant to be 3-3.5deg down for a “symmetrical” beam.

Prized the Siem apart…
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Molto Verboso
bare metal cafe racer
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Posts: 1379
Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
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Posts: 1379
Location: Aotearoa (New Zealand)
UTC quote
Cut a wedge of 1.5mm rubber to tilt the front - it sits on the tabs.
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Molto Verboso
bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
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UTC quote
And made a wire ‘clip’ that holds the lamp in tightly at the bottom. The top is held in by the original tabs.
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Molto Verboso
bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
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Posts: 1379
Location: Aotearoa (New Zealand)
UTC quote
One of the headset threads for the headlamp was stripped. So found a plain M4 nut…
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Molto Verboso
bare metal cafe racer
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Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
UTC quote
It would sit far too proud in the headset to fit the headlamp back on - so dremelled the headset to about 1mm to sink it as far as poss. Roughed it up, cleaned both surfaces with isoP, then stuck the nut in with JB weld…
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Molto Verboso
bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
UTC quote
Came out pretty well…
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Molto Verboso
bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
 
Molto Verboso
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bare metal cafe racer
Joined: UTC
Posts: 1379
Location: Aotearoa (New Zealand)
UTC quote
And definitely pointing down now. Actually might be too far down - but can adjust it by trimming the wedge. Will lift it at the testing station if I need.
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Molto Verboso
Vespa
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Posts: 1758
Location: California
 
Molto Verboso
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Vespa
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Posts: 1758
Location: California
UTC quote
wow great illumination of the instruments!
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