Builder Tip #52 from HomebuiltHELP 
Using a Diode with your Battery Contactor
Some have it - and others don't!
Why use a Diode with your battery/starter contactor?

That little electronic capsule (a diode) is sometimes found attached to the terminals of contactors and solenoids on experimental and certified aircraft. Why is it there and what does it do? Should you add one if the contactor on your homebuilt aircraft doesn't come with one? Where do you attach the wires and where to buy one?

These and other questions are discussed in our latest tip video. (last week's tip presented the basics of battery and starter contactors)

Above: A diode (note band near end)
    Diode connected to contactor
There could be a Float Kit in your Future

Of course winter has arrived, but this is the perfect way to pass the time - start building your metal float kit from Zenair! HomebuiltHELP has a detailed step by step demonstration DVD set that shows how this kit goes together -- you can decide for just a small investment in these DVDs if this kit is the right path for your project!

Zenair floats are installed and operated on all types and brands of homebuilt aircraft. If the price tag of a factory built version of these floats is heavy for your budget - consider the kit version and really save. Our DVDs make it perfectly clear what tools, time and effort is needed to build your own!

    Constructing  Bulkheads
Amphibious Floats built in our DVD video
Watch a previous Tip?
  Don't forget that past Tip of the Week articles and videos are listed on the Archive Listing page on our website.  You can check back there for future reference and review of these tips.You can also reach that page from a link on the top, right side of our home page.  
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HomebuiltHelp's Engine installation videos make the daunting task of an engine installation a LOT easier! Watch someone else do it first! This is part of your engine evaluation process. Featuring:
Rotax,   ULPower,   Jabiru,   Viking, Continental

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