Category Archives: How To?

Balancing Severely Out of Balance A123 Pack

The following is a recent exchange discussing some charging logic that is impacted often by time-out settings in chargers. Not a bad thing all in all. The same logic can be applied to Lipo packs as well. Hi, Dave: Here’s … Continue reading

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Scratch Building: Transfer A Drawing To Wood

We’re converting a Hobby Lobby Telemaster into a 1928 Fairchild FC-2W2 for a National Parks Service program. This aircraft was the first ever owned by NASA and later the first owned by the National Parks Service. Information link at bottom. … Continue reading

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Crash Investigation, Why did it crash?

Just as in full scale aviation, crashes are often because of a sequence of things going wrong. I received a letter recently asking my opinion on a set of circumstances. At the time of this writing there is no 100% … Continue reading

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Iowa City AeroHawks Nice Remarks

Good Morning Dave: Attached please find a flyer advertising our 10th annual swap meet scheduled for January 20th 2013. You participated in one of our first swap meets several years ago and gave us some very valuable suggestions which we … Continue reading

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Posted in How: A Successful Swap Meet, Shameless Plugs | Leave a comment

Lipo Battery Disposal

Warren Behymer asks and interesting question: I need to know how to dispose of LiPo battery that has swollen due to an overcurrent. There are two issues. 1. We want to discharge the battery in such a way as there … Continue reading

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Converting A Model From Lipo to A123 (LIFE) Cells

Chris from Michigan Asks; Hello Dave, I would like to power my Ryan with A123 cells. I have been using a 9s 4p 6000mah Lipo pack to power a Hacker C50 motor. If I understand things correctly, I believe that … Continue reading

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Posted in Battery Wisdom, Blog Entries, Convert Lipo to A123 Cell Count, Electronics Interest | Tagged , , , , , , , , , , , , , , , , , , , , , | Leave a comment

Holding A Swap Meet: Date Planning

The following advice is written with RC hobby swap meets in mind. However, the same logic and solid advice apply’s to any club event you are contemplating. Why: The largest reason for an event failing to take root and grow … Continue reading

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Checking A123 RX Packs For Recharge Point

A123 RX Packs can be tricky to deturming how much is left in the pack by checking voltage alone. Variations in connectors and length of wire can have a big impact on actual volt readings when loaded. Using an RRC1000 … Continue reading

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Posted in Battery Wisdom, Blog Entries, Electronics Interest, How: Make a Battery State of Discharge Chart | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Being a Good Test Pilot: Part 4, Trim Pre Flight – Flight Plan

Our series about becoming a solid test pilot continues….. Make sure every surface is perfectly nuetral. No slight rudder, or aileron inputs. Check the elevator for “slight up”. I would define this as the elevator being set dead nuetral then … Continue reading

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Being A Good Test Pilot: Part 3, On the Wheels

A continuing series on how to be a solid test flight, we continue…… Check the RX pack, that it’s state of charge is high. For an electric model. Verify with the owner that the pack is full. When was it … Continue reading

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