Mountain Biking at night (or early morning) is a true blast.. Using headlamps has been the only real choice short of spending some coin on a true bike light (some of these puppies cost >$500!!).
While the lack of light never stopped us from riding, the glory of having a MEAN bike light was calling me out.
The main problem I found with all the bike lights out there to build was the battery and housing.
- Recharge battery packs cost some money and having another charger in the house was something I didn't want.
- Housing is always an issue with DIY projects. I think 95% of my dads circuit boards lived in little blue hobby boxes. Sure they worked but didn't look so hot. I didn't want my new bike light sitting in a big ball of black tape.
The solution was to use the housing I found from the instructable: BIKE LIGHT 500 Lumen "Mt.Bike" for under 10 bucks by Veggiecycle
This gave me a pretty good looking and durable housing but what about the batteries? The answer was already sitting in my charger!
1 18v Ryobi Battery Packhttp://www.oneplustools.com/http://www.ryobitools.com/index.php
I had already bitten off on the 18v series. My collection consists of the drill, saw, dust-buster, chainsaw (yup) and light.
This light is the one that we'll be using to create our 18v monster.
QUESTION - Why not just use the light that came with it? My friend tried this and it turns out that while the 18v light does give off OK lighting (and lasts awhile) it doesn't even come close to what we are building here. When you're doing you'll see what I mean.WARNING
- please please
be aware that the bulb we are using here is a 12v NOT an 18v which means we are pushing (beyond) the limits of this bulb. This is a risk from a heat+safety standpoint. You can reduce the volts using various methods (one that I'm exploring right now) but in this project we push the 18v straight to the bulb.