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ISO 8601 was published on 06/05/88 and most recently amended on 12/01/04.

From the IRF1404Z data sheet:

Calculated continuous current based on maximum allowable junction temperature. Bond wire current limit is 120A. Note that current limitations arising from heating of the device leads may occur with some lead mounting arrangements.

You need to design the PCB so that the heat from the legs can be properly dissipated, or they won’t live up to the rated current.

Also, traces on a PCB are much thinner than those legs. A trace with the same cross-sectional area would be impractically wide.

Not really. With that bulb, all the light is focused forward, not to the side. The light will never hit the reflector, it is only focused by the lens in the LED housing, and that isn’t enough.

From looking at the LED bulb, I can tell you that it will not work very well in that flashlight.

The reflector of the flashlight is built so light coming from a very small source (like the filament of an incandescent bulb) is directed forward in a focused beam. With the led bulb, light is coming from 10 different spots, none of them being in the focus point of the reflector. The result will be a spread out beam that won’t be bright over longer distances.

The only type of LED bulb that could work is something like this car replacement bulb that keeps the light source to a relatively small spot. But I don’t think those are available in the size you need.

3

It isn’t that hard, But it might be a bit overwhelming if you haven’t done something like it before. I would recommend setting aside a couple of evenings for the job and taking your time. Start by stripping everything down, the build your bike back up slowly with the new parts.

It might be easier to pay your LBS for the job, but if you do it yourself, you are going to be well equipped to handle most issues and do any maintenance that may arise in the future.

Also, you can always bring the bike in to your LBS for the final setup and adjustment.

Here are some things you might want to keep in mind/check:

• if you are replacing brake/shift levers, you will need to rewrap the bar tape. It might be possible to reuse the old tape, but it might get destroyed in the process. (In my opinion, just get new bar tape. It’s not that expensive and directly impacts the (literal) feel of the bike
• different types of bottom brackets need different tools. Check that you have the correct one before taking everything apart.

Incandescent oven bulbs will probably not be replaced, simply because there is no reason for it. The “wasted” energy from an incandescent bulb is expelled as heat, and extra heat in an oven is not a problem. You can describe the bulb in an oven as a tiny heater that just happens to give off a bit of light.